Abstract Liver Cancer is one of the most difficult cancer to cure and the number of deaths that it causes generally increasing. The signs and the symptoms of the liver cancer are not known, till the cancer is in its advanced stage. So, early detection is the main problem. If it is detected earlier then it can be helpful for the Medical treatment to limit the danger, but it is a challenging task due to the Cancer cell structure. Interpretation of Medical image is often difficult and time consuming, even for the experienced Physicians. Most traditional medical diagnosis systems founded needs huge quantity of training data and takes long processing time. Focused on the solution to these problems, a Medical Diagnosis System based on Hidden Markov Model (HMM) is presented. This paperdescribes a computer aided diagnosis system for liver cancer that detects the liver tumor at an early stage from the chest CT images. This automation process reduces the time complexity and increases the diagnosis confidence. Keywords—HMM, Segmentation, Feature Extraction.
The International Journal of Engineering and Science (The IJES)theijes
This document summarizes a research paper on developing a computer-aided diagnosis system for early detection of liver cancer from CT chest images. The proposed system involves extracting features from segmented liver regions of CT images using techniques like noise removal, segmentation, and morphological operations. Features are then extracted and can be classified using Hidden Markov Models to identify liver cancer cells at an early stage and improve diagnosis. The authors suggest future work to refine cancer cell classification and reduce time complexity for improved diagnosis confidence.
IRJET-Bone Tumor Detection from MRI Images using Machine Learning: A ReviewIRJET Journal
1. The document proposes a method for detecting bone tumors using machine learning algorithms applied to MRI images.
2. The method involves preprocessing images using denoising filters, segmenting images using k-means clustering and fuzzy c-means, extracting features using machine learning algorithms, identifying tumors by calculating mean pixel intensity of segmented regions, and detecting tumors by identifying the largest connected component.
3. The goal is to develop a robust system for accurately detecting bone tumors like enchondroma in MRI images by addressing noise and obtaining the exact tumor location.
Liver extraction using histogram and morphologyeSAT Journals
Abstract
Liver is the largest glandular organ important for survival in human body. Computed tomography is generally used to image liver
due to its precision. This paper presents a method to extract liver from computed tomography (CT) abdomen images in axial
orientation. A traditional segmentation method based on histogram and morphology is proposed herein. Histogram is used to
analyze the intensity distribution, morphological operations are used to disconnect liver from the neighboring organs and greatest
connected pixels are extracted. The experimental results of the proposed method when applied to CT abdomen images with
contrast are presented and the effectiveness is discussed in accordance to the manual tracing obtained from the radiologist. Dice
similarity co-efficient amounts to 94% in the proposed method.
Keywords: Segmentation, Extraction, Histogram, Morphology, Connected Component, CT Liver
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
A theoretical study on partially automated method for (prostate) cancer pinpo...eSAT Journals
Abstract A Partially Automated method for (Prostate) Cancer pinpoint using Multi-parametric magnetic resonance imaging has been proposed in this paper, which can be used in guiding surgery. A Random Walker (RW) algorithm has been analyzed with seed initialization to perform (Prostate) cancer pinpoint using Magnetic Resonance Imaging (MRI). Segmentation can be done by using Random Walker (RW) algorithm which has to be considered to be a fastest method. Random Walker (RW) method can be used with multi-parametric magnetic resonance imaging (MRI) and then by using Support Vector Machine (SVM) method, we can determine the seed points in a partially automated manner. By using this method, more weights to the image can be assigned in order to produce improved segmentation process. The proposed method can also give high specificity rate without reducing the sensitivity which is better than earlier methods and fisher sign test can be also used to find the statistical differences. Index terms:Support Vector Machine, Random Walker, Magnetic Prediction, Magnetic Resonance.
DETECTING BRAIN TUMOUR FROM MRI IMAGE USING MATLAB GUI PROGRAMMEIJCSES Journal
Engineers have been actively developing tools to detect tumors and to process medical images. Medical image segmentation is a powerful tool that is often used to detect tumors. Many scientists and researchers are working to develop and add more features to this tool. This project is about detecting Brain tumors from MRI images using an interface of GUI in Matlab. Using the GUI, this program can use various combinations of segmentation, filters, and other image processing algorithms to achieve the best results.
We start with filtering the image using Prewitt horizontal edge-emphasizing filter. The next step for detecting tumor is "watershed pixels." The most important part of this project is that all the Matlab programs work with GUI “Matlab guide”. This allows us to use various combinations of filters, and other
image processing techniques to arrive at the best result that can help us detect brain tumors in their early stages.
Brain tumor classification using artificial neural network on mri imageseSAT Journals
Abstract
In this paper, an attempt has been made to summarize the multi-resolution transformation and the different classifiers useful to
analyze the brain tumor using MRI. X-ray, MRI, Ultrasound etc. are different techniques used to scan brain tumor images.
Radiologist prefers MRI to get detail information about tumor to help him diagnoses. In this paper we have used MRI of brain
tumor for analysis. We have used Digital image processing tool for detection of the tumor. The identification, detection and
classification of brain tumor have been done by extracting features from MRI with the help of wavelet transformation. The MRI of
brain tumor is classified into two categories normal and abnormal brain. In this work Digital image processing has been used as
a tool for getting clear and exact details about tumor in earlier stages. This helps the physicians and practitioners for diagnoses.
Key word – Brain tumor, Wavelet transform, segmentation.
The International Journal of Engineering and Science (The IJES)theijes
This document summarizes a research paper on developing a computer-aided diagnosis system for early detection of liver cancer from CT chest images. The proposed system involves extracting features from segmented liver regions of CT images using techniques like noise removal, segmentation, and morphological operations. Features are then extracted and can be classified using Hidden Markov Models to identify liver cancer cells at an early stage and improve diagnosis. The authors suggest future work to refine cancer cell classification and reduce time complexity for improved diagnosis confidence.
IRJET-Bone Tumor Detection from MRI Images using Machine Learning: A ReviewIRJET Journal
1. The document proposes a method for detecting bone tumors using machine learning algorithms applied to MRI images.
2. The method involves preprocessing images using denoising filters, segmenting images using k-means clustering and fuzzy c-means, extracting features using machine learning algorithms, identifying tumors by calculating mean pixel intensity of segmented regions, and detecting tumors by identifying the largest connected component.
3. The goal is to develop a robust system for accurately detecting bone tumors like enchondroma in MRI images by addressing noise and obtaining the exact tumor location.
Liver extraction using histogram and morphologyeSAT Journals
Abstract
Liver is the largest glandular organ important for survival in human body. Computed tomography is generally used to image liver
due to its precision. This paper presents a method to extract liver from computed tomography (CT) abdomen images in axial
orientation. A traditional segmentation method based on histogram and morphology is proposed herein. Histogram is used to
analyze the intensity distribution, morphological operations are used to disconnect liver from the neighboring organs and greatest
connected pixels are extracted. The experimental results of the proposed method when applied to CT abdomen images with
contrast are presented and the effectiveness is discussed in accordance to the manual tracing obtained from the radiologist. Dice
similarity co-efficient amounts to 94% in the proposed method.
Keywords: Segmentation, Extraction, Histogram, Morphology, Connected Component, CT Liver
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
A theoretical study on partially automated method for (prostate) cancer pinpo...eSAT Journals
Abstract A Partially Automated method for (Prostate) Cancer pinpoint using Multi-parametric magnetic resonance imaging has been proposed in this paper, which can be used in guiding surgery. A Random Walker (RW) algorithm has been analyzed with seed initialization to perform (Prostate) cancer pinpoint using Magnetic Resonance Imaging (MRI). Segmentation can be done by using Random Walker (RW) algorithm which has to be considered to be a fastest method. Random Walker (RW) method can be used with multi-parametric magnetic resonance imaging (MRI) and then by using Support Vector Machine (SVM) method, we can determine the seed points in a partially automated manner. By using this method, more weights to the image can be assigned in order to produce improved segmentation process. The proposed method can also give high specificity rate without reducing the sensitivity which is better than earlier methods and fisher sign test can be also used to find the statistical differences. Index terms:Support Vector Machine, Random Walker, Magnetic Prediction, Magnetic Resonance.
DETECTING BRAIN TUMOUR FROM MRI IMAGE USING MATLAB GUI PROGRAMMEIJCSES Journal
Engineers have been actively developing tools to detect tumors and to process medical images. Medical image segmentation is a powerful tool that is often used to detect tumors. Many scientists and researchers are working to develop and add more features to this tool. This project is about detecting Brain tumors from MRI images using an interface of GUI in Matlab. Using the GUI, this program can use various combinations of segmentation, filters, and other image processing algorithms to achieve the best results.
We start with filtering the image using Prewitt horizontal edge-emphasizing filter. The next step for detecting tumor is "watershed pixels." The most important part of this project is that all the Matlab programs work with GUI “Matlab guide”. This allows us to use various combinations of filters, and other
image processing techniques to arrive at the best result that can help us detect brain tumors in their early stages.
Brain tumor classification using artificial neural network on mri imageseSAT Journals
Abstract
In this paper, an attempt has been made to summarize the multi-resolution transformation and the different classifiers useful to
analyze the brain tumor using MRI. X-ray, MRI, Ultrasound etc. are different techniques used to scan brain tumor images.
Radiologist prefers MRI to get detail information about tumor to help him diagnoses. In this paper we have used MRI of brain
tumor for analysis. We have used Digital image processing tool for detection of the tumor. The identification, detection and
classification of brain tumor have been done by extracting features from MRI with the help of wavelet transformation. The MRI of
brain tumor is classified into two categories normal and abnormal brain. In this work Digital image processing has been used as
a tool for getting clear and exact details about tumor in earlier stages. This helps the physicians and practitioners for diagnoses.
Key word – Brain tumor, Wavelet transform, segmentation.
This document presents a methodology for classifying appendicitis based on ultrasound images using image processing techniques in MATLAB. The methodology involves capturing ultrasound images, preprocessing using median filtering, enhancing with adaptive histogram equalization, segmenting using histogram thresholding, detecting edges with Canny edge detection, and measuring the appendix diameter using Euclidean distance. Canny edge detection was found to be most suitable for defining the region of interest around the appendix. The diameter measurement can help diagnose appendicitis and determine severity.
Performance analysis of automated brain tumor detection from MR imaging and CT scan using basic image processing techniques based on various hard and soft computing has been performed in our work. Moreover, we applied six traditional classifiers to detect brain tumor in the images. Then we applied CNN for brain tumor detection to include deep learning method in our work. We compared the result of the traditional one having the best accuracy (SVM) with the result of CNN. Furthermore, our work presents a generic method of tumor detection and extraction of its various features.
This document presents a proposed method for automatic brain tumor tissue detection in T1-weighted MR images. The method uses a four-step process: segmentation, morphological operations, feature extraction, and classification. In the training section, MRI images are preprocessed and features are extracted using gray-level co-occurrence matrix (GLCM). The features are then used to train a classifier to detect and classify tumors as normal, abnormal, benign, or malignant. In the testing section, input MRI images also undergo preprocessing, feature extraction with GLCM, and then the trained classifier detects, segments, and classifies any tumor tissues found in the images. The goal is to automatically localize and diagnose brain tumor masses in MRI scans.
Neutrosophic sets and fuzzy c means clustering for improving ct liver image s...Aboul Ella Hassanien
The document proposes a hybrid method using neutrosophic sets and fuzzy c-means clustering to improve liver segmentation in CT images. It transforms the image into neutrosophic domains of truth, indeterminacy, and falsity. Thresholds are adapted using fuzzy c-means to binarize the domains. Experimental results on 30 abdominal CT images found 88% accuracy by Jaccard index and 94% by Dice coefficient, outperforming other methods. The approach effectively handles noise and uncertainty to produce clear liver boundaries.
Brain tumor detection and localization in magnetic resonance imagingijitcs
A tumor also known as neoplasm is a growth in the abnormal tissue which can be differentiated from the
surrounding tissue by its structure. A tumor may lead to cancer, which is a major leading cause of death and
responsible for around 13% of all deaths world-wide. Cancer incidence rate is growing at an alarming rate
in the world. Great knowledge and experience on radiology are required for accurate tumor detection in
medical imaging. Automation of tumor detection is required because there might be a shortage of skilled
radiologists at a time of great need. We propose an automatic brain tumor detectionand localization
framework that can detect and localize brain tumor in magnetic resonance imaging. The proposed brain
tumor detection and localization framework comprises five steps: image acquisition, pre-processing, edge
detection, modified histogram clustering and morphological operations. After morphological operations,
tumors appear as pure white color on pure black backgrounds. We used 50 neuroimages to optimize our
system and 100 out-of-sample neuroimages to test our system. The proposed tumor detection and localization
system was found to be able to accurately detect and localize brain tumor in magnetic resonance imaging.
The preliminary results demonstrate how a simple machine learning classifier with a set of simple
image-based features can result in high classification accuracy. The preliminary results also demonstrate the
efficacy and efficiency of our five-step brain tumor detection and localization approach and motivate us to
extend this framework to detect and localize a variety of other types of tumors in other types of medical
imagery.
MEDICAL IMAGES AUTHENTICATION THROUGH WATERMARKING PRESERVING ROIhiij
Telemedicine is a well-known application where enormous amount of medical data need to be securely
transferred over the public network and manipulate effectively. Medical image watermarking is an
appropriate method used for enhancing security and authentication of medical data, which is crucial and
used for further diagnosis and reference. This project focuses on the study of medical image
watermarking methods for protecting and authenticating medical data. Additionally, it covers algorithm
for application of water marking technique on Region of Non Interest (RONI) of the medical image
preserving Region of Interest (ROI). The medical images can be transferred securely by embedding
watermarks in RONI allowing verification of the legitimate changes at the receiving end without affecting
ROI. Segmentation plays an important role in medical image processing for separating the ROI from
medical image. The proposed system separate the ROI from medical image by GUI based approach,
which works for all types of medical images. The experimental results show the satisfactory performance
of the system to authenticate the medical images preserving ROI.
Automatic detection of optic disc and blood vessels from retinal images using...eSAT Journals
Abstract Diabetic retinopathy is the common cause of blindness. This paper presents the mathematical morphology method to detect and eliminate the optic disc (OD) and the blood vessels. Detection of optic disc and the blood vessels are the necessary steps in the detection of diabetic retinopathy because the blood vessels and the optic disc are the normal features of the retinal image. And also, the optic disc and the exudates are the brightest portion of the image. Detection of optic disc and the blood vessels can help the ophthalmologists to detect the diseases earlier and faster. Optic disc and the blood vessels are detected and eliminated by using mathematical morphology methods such as closing, filling, morphological reconstruction and Otsu algorithm. The objective of this paper is to detect the normal features of the image. By using the result, the ophthalmologists can detect the diseases easily. Keywords: Blood vessels, Diabetic retinopathy, mathematical morphology, Otsu algorithm, optic disc (OD)
Feature Extraction and Analysis on Xinjiang High Morbidity of Kazak Esophagea...CSCJournals
Image feature extraction technology has been widely applied in image data mining, pattern recognition and classification. Esophageal cancer is a common digestive malignant tumor, China is one of the world's highest incidence and mortality rates of esophageal cancer among the countries, Xinjiang Uygur Autonomous Region is a high incidence area of esophageal cancer, and the kazak is the esophageal cancer high-risk groups. In this paper, we selected 60 advanced esophageal X-ray barium images, half of them are constricted esophagus and the rest are ulcerous esophagus. Firstly, image preprocessing approaches were used to preprocess images. Secondly, extracting the gray-scale histogram features and the GLCM features of the images, then composing the two features into comprehensive feature. Finally, using Bayes discriminant analysis to verify the classification ability of the comprehensive feature. The classification accuracy for constricted esophagus was 86.7%, for ulcerous esophagus was 93.3%.
IRJET- Brain Tumor Detection using Image Processing, ML & NLPIRJET Journal
This document presents a system for detecting brain tumors using image processing, machine learning, and natural language processing. The system applies preprocessing, filtering, and segmentation techniques to MRI images to extract features of the tumor such as shape, size, texture, and contrast. Machine learning algorithms are then used to classify tumors and detect their location. The system aims to make tumor detection more efficient and accurate compared to manual detection. It evaluates performance based on metrics like accuracy, sensitivity, specificity, and dice coefficient. The authors conclude the proposed approach can help timely and precise tumor detection and localization.
Segmentation of cysts in kidney and 3 d volume calculation from ct images ijcga
This paper proposes a segmentation method and a three-dimensional (3-D) volume calculation method of
cysts in kidney from a number of computer tomography (CT) slice images. The input CT slice images
contain both sides of kidneys. There are two segmentation steps used in the proposed method: kidney
segmentation and cyst segmentation. For kidney segmentation, kidney regions are segmented from CT slice
images by using a graph-cut method that is applied to the middle slice of input CT slice images. Then, the
same method is used for the remaining CT slice images. In cyst segmentation, cyst regions are segmented
from the kidney regions by using fuzzy C-means clustering and level-set methods that can reduce noise of
non-cyst regions. For 3-D volume calculation, cyst volume calculation and 3-D volume visualization are
used. In cyst volume calculation, the area of cyst in each CT slice image equals to the number of pixels in
the cyst regions multiplied by spatial density of CT slice images, and then the volume of cysts is calculated
by multiplying the cyst area and thickness (interval) of CT slice images. In 3-D volume visualization, a 3-D
visualization technique is used to show the distribution of cysts in kidneys by using the result of cyst volume
calculation. The total 3-D volume is the sum of the calculated cyst volume in each CT slice image.
Experimental results show a good performance of 3-D volume calculation. The proposed cyst segmentation
and 3-D volume calculation methods can provide practical supports to surgery options and medical
practice to medical students
Segmentation of cysts in kidney and 3 d volume calculation from ct imagesbioejjournal
Statistics based optimization, Plackett–Burman design (PBD) and response surface methodology
(RSM) were employed to screen and optimize the media components for the production of
clavulanic acid from Streptomyces clavuligerus MTCC 1142, using solid state fermentation. jackfruit
seed powder was used as both the solid support and carbon source for the growth of Streptomyces
clavuligerus MTCC 1142. Based on the positive influence of the Pareto chart obtained from PBD on
clavulanic acid production, five media components – yeast extract, beef extract, sucrose, malt extract
and ferric chloride were screened. Central composite design (CCD) was employed using these five
media components- yeast extract 2.5%, beef extract 0.5%, sucrose 2.5%, malt extract 0.25% and ferric
chloride nutritional factors at three levels, for further optimization, and the second order polynomial
equation was derived, based on the experimental data. Response surface methodology showed that
the concentrations of yeast extract 2.5%, beef extract 0.5%, sucrose 2.5%, malt extract 0.25% and ferric
chloride 2.5% were the optimal levels for maximal clavulanic acid production (19.37 mg /gds) which were validated through experiments.
A Survey on Segmentation Techniques Used For Brain Tumor DetectionEditor IJMTER
In recent years Brain tumor is one of the most commonly found causes for death among
children and adults. Early detection of tumor is a must in order to reduce the death rate. For tumor
detection various image techniques can be used. In this paper we mainly concentrate on the images
obtained from MRI scans. In MRI images, the tumor may appear clearly, but for further treatment
the physician need to be a qualified and well experienced person. In order to help the radiologist in
detection computer-aided diagnosis was developed. The generation of a CAD system consists of
several processes and among them segmentation is considered to the most important process. Image
Segmentation is a process of partitioning an image into multiple segments. The main objective of
segmentation is to represent the image into a simplified form so as to increase the efficiency and
accuracy of the system. Therefore the segmentation of brain tumor can be considered as an important
role in the medical image process. Hence in this paper we concentrate on the recently used
segmentation techniques for the detection of tumor using MRI images.
IRJET - Detection of Brain Tumor from MRI Images using MATLABIRJET Journal
This document presents a method for detecting brain tumors in MRI images using MATLAB. It involves pre-processing the MRI images to reduce noise and enhance contrast. Thresholding and watershed segmentation are then used to segment the images and isolate the tumor region. Morphological operations like erosion and dilation are applied post-segmentation to extract the tumor boundaries. The algorithm is tested on sample MRI images and is able to accurately detect tumors in all cases. The automated method provides faster and more consistent tumor detection compared to manual segmentation and reduces processing time.
Multiple Analysis of Brain Tumor Detection Based on FCMIRJET Journal
The document proposes a system to detect brain tumors in MRI images using multiple steps including pre-processing, segmentation using fuzzy c-means clustering, and feature extraction using fuzzy rules. It discusses how pre-processing improves tumor detection, fuzzy c-means segmentation identifies tumor regions and size, and prior approaches have limitations. The proposed system aims to better detect and identify brain tumors in MRI images as compared to other algorithms.
Batch Normalized Convolution Neural Network for Liver Segmentationsipij
With the huge innovative improvement in all lifestyles, it has been important to build up the clinical fields, remembering the finding for which treatment is done; where the fruitful treatment relies upon the
preoperative. Models for the preoperative, for example, planning to understand the complex internal structure of the liver and precisely localize the liver surface and its tumors; there are various algorithms proposed to do the automatic liver segmentation. In this paper, we propose a Batch Normalization After All - Convolutional Neural Network (BATA-Convnet) model to segment the liver CT images using Deep
Learning Technique. The proposed liver segmentation model consists of four main steps: pre-processing, training the BATA-Convnet, liver segmentation, and the postprocessing step to maximize the result
efficiency. Medical Image Computing and Computer Assisted Intervention (MICCAI) dataset and 3DImage Reconstruction for Comparison of Algorithm Database (3D-IRCAD) were used in the experimentation and the average results using MICCAI are 0.91% for Dice, 13.44% for VOE, 0.23% for RVD, 0.29mm for ASD, 1.35mm for RMSSD and 0.36mm for MaxASD. The average results using 3DIRCAD dataset are 0.84% for Dice, 13.24% for VOE, 0.16% for RVD, 0.32mm for ASD, 1.17mm for
RMSSD and 0.33mm for MaxASD.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Terrain generation finds many applications such as
in CGI movies, animations and video games. This
paper describes a new and simple-to-implement terra
in generator called the Uplift Model. It is based o
n
the theory of crustal deformations by uplifts in Ge
ology. When a number of uplifts are made on the Ear
th’s
surface, the final net effect is an average of the
influence of each uplift at each point on the terra
in. The
result of applying this model from Nature is a very
realistic looking effect in the generated terrains
. The
model uses 6 parameters which allow for a great var
iety in landscape types produced. Comparisons are
made with other existing terrain generation algorit
hms. Averaging causes erosion of the surface wherea
s
fractal surfaces tend to be very jagged and more su
ited to alien worlds.
Comparative analysis of edge based and region based active contour using leve...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Comparative analysis of edge based and region based active contour using leve...eSAT Journals
This document compares edge-based and region-based active contour segmentation methods using level sets on CT images of liver cancer. Edge-based methods use gradient information to stop contours at edges, while region-based methods use average intensity inside and outside contours. The document applies both methods to 10 CT images and evaluates them quantitatively using correlation, variation of information, global consistency error, and Rand index. Results show edge-based segmentation with distance regularized level sets performs better than region-based at locating cancer regions in images with indistinct edges.
This document presents a methodology for classifying appendicitis based on ultrasound images using image processing techniques in MATLAB. The methodology involves capturing ultrasound images, preprocessing using median filtering, enhancing with adaptive histogram equalization, segmenting using histogram thresholding, detecting edges with Canny edge detection, and measuring the appendix diameter using Euclidean distance. Canny edge detection was found to be most suitable for defining the region of interest around the appendix. The diameter measurement can help diagnose appendicitis and determine severity.
Performance analysis of automated brain tumor detection from MR imaging and CT scan using basic image processing techniques based on various hard and soft computing has been performed in our work. Moreover, we applied six traditional classifiers to detect brain tumor in the images. Then we applied CNN for brain tumor detection to include deep learning method in our work. We compared the result of the traditional one having the best accuracy (SVM) with the result of CNN. Furthermore, our work presents a generic method of tumor detection and extraction of its various features.
This document presents a proposed method for automatic brain tumor tissue detection in T1-weighted MR images. The method uses a four-step process: segmentation, morphological operations, feature extraction, and classification. In the training section, MRI images are preprocessed and features are extracted using gray-level co-occurrence matrix (GLCM). The features are then used to train a classifier to detect and classify tumors as normal, abnormal, benign, or malignant. In the testing section, input MRI images also undergo preprocessing, feature extraction with GLCM, and then the trained classifier detects, segments, and classifies any tumor tissues found in the images. The goal is to automatically localize and diagnose brain tumor masses in MRI scans.
Neutrosophic sets and fuzzy c means clustering for improving ct liver image s...Aboul Ella Hassanien
The document proposes a hybrid method using neutrosophic sets and fuzzy c-means clustering to improve liver segmentation in CT images. It transforms the image into neutrosophic domains of truth, indeterminacy, and falsity. Thresholds are adapted using fuzzy c-means to binarize the domains. Experimental results on 30 abdominal CT images found 88% accuracy by Jaccard index and 94% by Dice coefficient, outperforming other methods. The approach effectively handles noise and uncertainty to produce clear liver boundaries.
Brain tumor detection and localization in magnetic resonance imagingijitcs
A tumor also known as neoplasm is a growth in the abnormal tissue which can be differentiated from the
surrounding tissue by its structure. A tumor may lead to cancer, which is a major leading cause of death and
responsible for around 13% of all deaths world-wide. Cancer incidence rate is growing at an alarming rate
in the world. Great knowledge and experience on radiology are required for accurate tumor detection in
medical imaging. Automation of tumor detection is required because there might be a shortage of skilled
radiologists at a time of great need. We propose an automatic brain tumor detectionand localization
framework that can detect and localize brain tumor in magnetic resonance imaging. The proposed brain
tumor detection and localization framework comprises five steps: image acquisition, pre-processing, edge
detection, modified histogram clustering and morphological operations. After morphological operations,
tumors appear as pure white color on pure black backgrounds. We used 50 neuroimages to optimize our
system and 100 out-of-sample neuroimages to test our system. The proposed tumor detection and localization
system was found to be able to accurately detect and localize brain tumor in magnetic resonance imaging.
The preliminary results demonstrate how a simple machine learning classifier with a set of simple
image-based features can result in high classification accuracy. The preliminary results also demonstrate the
efficacy and efficiency of our five-step brain tumor detection and localization approach and motivate us to
extend this framework to detect and localize a variety of other types of tumors in other types of medical
imagery.
MEDICAL IMAGES AUTHENTICATION THROUGH WATERMARKING PRESERVING ROIhiij
Telemedicine is a well-known application where enormous amount of medical data need to be securely
transferred over the public network and manipulate effectively. Medical image watermarking is an
appropriate method used for enhancing security and authentication of medical data, which is crucial and
used for further diagnosis and reference. This project focuses on the study of medical image
watermarking methods for protecting and authenticating medical data. Additionally, it covers algorithm
for application of water marking technique on Region of Non Interest (RONI) of the medical image
preserving Region of Interest (ROI). The medical images can be transferred securely by embedding
watermarks in RONI allowing verification of the legitimate changes at the receiving end without affecting
ROI. Segmentation plays an important role in medical image processing for separating the ROI from
medical image. The proposed system separate the ROI from medical image by GUI based approach,
which works for all types of medical images. The experimental results show the satisfactory performance
of the system to authenticate the medical images preserving ROI.
Automatic detection of optic disc and blood vessels from retinal images using...eSAT Journals
Abstract Diabetic retinopathy is the common cause of blindness. This paper presents the mathematical morphology method to detect and eliminate the optic disc (OD) and the blood vessels. Detection of optic disc and the blood vessels are the necessary steps in the detection of diabetic retinopathy because the blood vessels and the optic disc are the normal features of the retinal image. And also, the optic disc and the exudates are the brightest portion of the image. Detection of optic disc and the blood vessels can help the ophthalmologists to detect the diseases earlier and faster. Optic disc and the blood vessels are detected and eliminated by using mathematical morphology methods such as closing, filling, morphological reconstruction and Otsu algorithm. The objective of this paper is to detect the normal features of the image. By using the result, the ophthalmologists can detect the diseases easily. Keywords: Blood vessels, Diabetic retinopathy, mathematical morphology, Otsu algorithm, optic disc (OD)
Feature Extraction and Analysis on Xinjiang High Morbidity of Kazak Esophagea...CSCJournals
Image feature extraction technology has been widely applied in image data mining, pattern recognition and classification. Esophageal cancer is a common digestive malignant tumor, China is one of the world's highest incidence and mortality rates of esophageal cancer among the countries, Xinjiang Uygur Autonomous Region is a high incidence area of esophageal cancer, and the kazak is the esophageal cancer high-risk groups. In this paper, we selected 60 advanced esophageal X-ray barium images, half of them are constricted esophagus and the rest are ulcerous esophagus. Firstly, image preprocessing approaches were used to preprocess images. Secondly, extracting the gray-scale histogram features and the GLCM features of the images, then composing the two features into comprehensive feature. Finally, using Bayes discriminant analysis to verify the classification ability of the comprehensive feature. The classification accuracy for constricted esophagus was 86.7%, for ulcerous esophagus was 93.3%.
IRJET- Brain Tumor Detection using Image Processing, ML & NLPIRJET Journal
This document presents a system for detecting brain tumors using image processing, machine learning, and natural language processing. The system applies preprocessing, filtering, and segmentation techniques to MRI images to extract features of the tumor such as shape, size, texture, and contrast. Machine learning algorithms are then used to classify tumors and detect their location. The system aims to make tumor detection more efficient and accurate compared to manual detection. It evaluates performance based on metrics like accuracy, sensitivity, specificity, and dice coefficient. The authors conclude the proposed approach can help timely and precise tumor detection and localization.
Segmentation of cysts in kidney and 3 d volume calculation from ct images ijcga
This paper proposes a segmentation method and a three-dimensional (3-D) volume calculation method of
cysts in kidney from a number of computer tomography (CT) slice images. The input CT slice images
contain both sides of kidneys. There are two segmentation steps used in the proposed method: kidney
segmentation and cyst segmentation. For kidney segmentation, kidney regions are segmented from CT slice
images by using a graph-cut method that is applied to the middle slice of input CT slice images. Then, the
same method is used for the remaining CT slice images. In cyst segmentation, cyst regions are segmented
from the kidney regions by using fuzzy C-means clustering and level-set methods that can reduce noise of
non-cyst regions. For 3-D volume calculation, cyst volume calculation and 3-D volume visualization are
used. In cyst volume calculation, the area of cyst in each CT slice image equals to the number of pixels in
the cyst regions multiplied by spatial density of CT slice images, and then the volume of cysts is calculated
by multiplying the cyst area and thickness (interval) of CT slice images. In 3-D volume visualization, a 3-D
visualization technique is used to show the distribution of cysts in kidneys by using the result of cyst volume
calculation. The total 3-D volume is the sum of the calculated cyst volume in each CT slice image.
Experimental results show a good performance of 3-D volume calculation. The proposed cyst segmentation
and 3-D volume calculation methods can provide practical supports to surgery options and medical
practice to medical students
Segmentation of cysts in kidney and 3 d volume calculation from ct imagesbioejjournal
Statistics based optimization, Plackett–Burman design (PBD) and response surface methodology
(RSM) were employed to screen and optimize the media components for the production of
clavulanic acid from Streptomyces clavuligerus MTCC 1142, using solid state fermentation. jackfruit
seed powder was used as both the solid support and carbon source for the growth of Streptomyces
clavuligerus MTCC 1142. Based on the positive influence of the Pareto chart obtained from PBD on
clavulanic acid production, five media components – yeast extract, beef extract, sucrose, malt extract
and ferric chloride were screened. Central composite design (CCD) was employed using these five
media components- yeast extract 2.5%, beef extract 0.5%, sucrose 2.5%, malt extract 0.25% and ferric
chloride nutritional factors at three levels, for further optimization, and the second order polynomial
equation was derived, based on the experimental data. Response surface methodology showed that
the concentrations of yeast extract 2.5%, beef extract 0.5%, sucrose 2.5%, malt extract 0.25% and ferric
chloride 2.5% were the optimal levels for maximal clavulanic acid production (19.37 mg /gds) which were validated through experiments.
A Survey on Segmentation Techniques Used For Brain Tumor DetectionEditor IJMTER
In recent years Brain tumor is one of the most commonly found causes for death among
children and adults. Early detection of tumor is a must in order to reduce the death rate. For tumor
detection various image techniques can be used. In this paper we mainly concentrate on the images
obtained from MRI scans. In MRI images, the tumor may appear clearly, but for further treatment
the physician need to be a qualified and well experienced person. In order to help the radiologist in
detection computer-aided diagnosis was developed. The generation of a CAD system consists of
several processes and among them segmentation is considered to the most important process. Image
Segmentation is a process of partitioning an image into multiple segments. The main objective of
segmentation is to represent the image into a simplified form so as to increase the efficiency and
accuracy of the system. Therefore the segmentation of brain tumor can be considered as an important
role in the medical image process. Hence in this paper we concentrate on the recently used
segmentation techniques for the detection of tumor using MRI images.
IRJET - Detection of Brain Tumor from MRI Images using MATLABIRJET Journal
This document presents a method for detecting brain tumors in MRI images using MATLAB. It involves pre-processing the MRI images to reduce noise and enhance contrast. Thresholding and watershed segmentation are then used to segment the images and isolate the tumor region. Morphological operations like erosion and dilation are applied post-segmentation to extract the tumor boundaries. The algorithm is tested on sample MRI images and is able to accurately detect tumors in all cases. The automated method provides faster and more consistent tumor detection compared to manual segmentation and reduces processing time.
Multiple Analysis of Brain Tumor Detection Based on FCMIRJET Journal
The document proposes a system to detect brain tumors in MRI images using multiple steps including pre-processing, segmentation using fuzzy c-means clustering, and feature extraction using fuzzy rules. It discusses how pre-processing improves tumor detection, fuzzy c-means segmentation identifies tumor regions and size, and prior approaches have limitations. The proposed system aims to better detect and identify brain tumors in MRI images as compared to other algorithms.
Batch Normalized Convolution Neural Network for Liver Segmentationsipij
With the huge innovative improvement in all lifestyles, it has been important to build up the clinical fields, remembering the finding for which treatment is done; where the fruitful treatment relies upon the
preoperative. Models for the preoperative, for example, planning to understand the complex internal structure of the liver and precisely localize the liver surface and its tumors; there are various algorithms proposed to do the automatic liver segmentation. In this paper, we propose a Batch Normalization After All - Convolutional Neural Network (BATA-Convnet) model to segment the liver CT images using Deep
Learning Technique. The proposed liver segmentation model consists of four main steps: pre-processing, training the BATA-Convnet, liver segmentation, and the postprocessing step to maximize the result
efficiency. Medical Image Computing and Computer Assisted Intervention (MICCAI) dataset and 3DImage Reconstruction for Comparison of Algorithm Database (3D-IRCAD) were used in the experimentation and the average results using MICCAI are 0.91% for Dice, 13.44% for VOE, 0.23% for RVD, 0.29mm for ASD, 1.35mm for RMSSD and 0.36mm for MaxASD. The average results using 3DIRCAD dataset are 0.84% for Dice, 13.24% for VOE, 0.16% for RVD, 0.32mm for ASD, 1.17mm for
RMSSD and 0.33mm for MaxASD.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Terrain generation finds many applications such as
in CGI movies, animations and video games. This
paper describes a new and simple-to-implement terra
in generator called the Uplift Model. It is based o
n
the theory of crustal deformations by uplifts in Ge
ology. When a number of uplifts are made on the Ear
th’s
surface, the final net effect is an average of the
influence of each uplift at each point on the terra
in. The
result of applying this model from Nature is a very
realistic looking effect in the generated terrains
. The
model uses 6 parameters which allow for a great var
iety in landscape types produced. Comparisons are
made with other existing terrain generation algorit
hms. Averaging causes erosion of the surface wherea
s
fractal surfaces tend to be very jagged and more su
ited to alien worlds.
Comparative analysis of edge based and region based active contour using leve...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Comparative analysis of edge based and region based active contour using leve...eSAT Journals
This document compares edge-based and region-based active contour segmentation methods using level sets on CT images of liver cancer. Edge-based methods use gradient information to stop contours at edges, while region-based methods use average intensity inside and outside contours. The document applies both methods to 10 CT images and evaluates them quantitatively using correlation, variation of information, global consistency error, and Rand index. Results show edge-based segmentation with distance regularized level sets performs better than region-based at locating cancer regions in images with indistinct edges.
Liver segmentation using marker controlled watershed transform IJECEIAES
The largest organ in the body is the liver and primarily helps in metabolism and detoxification. Liver segmentation is a crucial step in liver cancer detection in computer vision-based biomedical image analysis. Liver segmentation is a critical task and results in under-segmentation and over-segmentation due to the complex structure of abdominal computed tomography (CT) images, noise, and textural variations over the image. This paper presents liver segmentation in abdominal CT images using marker-based watershed transforms. In the pre-processing stage, a modified double stage gaussian filter (MDSGF) is used to enhance the contrast, and preserve the edge and texture information of liver CT images. Further, marker controlled watershed transform is utilized for the segmentation of liver images from the abdominal CT images. Liver segmentation using suggested MDSGF and marker-based watershed transform help to diminish the under-segmentation and over-segmentation of the liver object. The performance of the proposed system is evaluated on the LiTS dataset based on Dice score (DS), relative volume difference (RVD), volumetric overlapping error (VOE), and Jaccard index (JI). The proposed method gives (Dice score of 0.959, RVD of 0.09, VOE of 0.089, and JI of 0.921).
A Review of Super Resolution and Tumor Detection Techniques in Medical Imagingijtsrd
Images with high resolution are desirable in many applications such as medical imaging, video surveillance, astronomy etc. In medical imaging, images are obtained for medical investigative purposes and for providing information about the anatomy, the physiologic and metabolic activities of the volume below the skin. Medical imaging is an important diagnosis instrument to determine the presence of certain diseases. Therefore increasing the image resolution should significantly improve the diagnosis ability for corrective treatment. Brain tumor detection is used for identifying the tumor present in the Brain. MRI images help the doctors for identifying the Brain tumor size and shape of the tumor. The purpose of this report to provide a survey of research related super resolution and tumor detection methods. Fathimath Safana C. K | Sherin Mary Kuriakose ""A Review of Super Resolution and Tumor Detection Techniques in Medical Imaging"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23525.pdf
Paper URL: https://www.ijtsrd.com/engineering/electronics-and-communication-engineering/23525/a-review-of-super-resolution-and-tumor-detection-techniques-in-medical-imaging/fathimath-safana-c-k
IRJET- Review Paper on a Review on Lung Cancer Detection using Digital Image ...IRJET Journal
This document reviews techniques for detecting lung cancer from digital chest images. It discusses how digital image processing techniques like preprocessing, segmentation, feature extraction and neural networks can be used to analyze CT scan images and detect lung cancers. Preprocessing steps include grayscale conversion, normalization, noise reduction and binary conversion. Segmentation methods like thresholding are used to isolate the lungs. Features like size and shape are extracted and analyzed by neural networks to classify lesions and detect cancers. The paper suggests this automated detection system could help address limitations of manual radiologist review like missed cancers.
An approach for cross-modality guided quality enhancement of liver imageIJECEIAES
This paper proposes a novel approach for enhancing the contrast of CT liver images using MRI liver images as a guide. The approach has three steps: 1) transforming the CT and MRI images to the same range, 2) adjusting the CT histogram to match the MRI histogram, and 3) applying adaptive histogram equalization to the CT image using two sigmoid functions. Experimental results show that the proposed approach improves image quality metrics like contrast and brightness preservation compared to traditional techniques. Both subjective and objective assessments indicate the approach enhances image contrast while preserving mean brightness and details.
Reinforcing optimization enabled interactive approach for liver tumor extrac...IJECEIAES
This document presents a method for liver tumor extraction from computed tomography (CT) images using an optimization-based approach. It first preprocesses the CT images using median filtering to reduce noise. It then segments the images using a fuzzy c-means clustering algorithm. To improve segmentation accuracy, it incorporates a grey wolf optimization metaheuristic to determine the optimal clustering threshold. Experimental results on both public and simulated datasets show the method can extract liver tumors while minimizing user input, outperforming other state-of-the-art segmentation algorithms.
PERFORMANCE EVALUATION OF TUMOR DETECTION TECHNIQUES ijcsa
Automatic segmentation of tumor plays a vital role in diagnosis and surgical planning. This paper deals
with techniques which providing solution for detecting hepatic tumor in Computed Tomography (CT)
images. The main aim of this work is to analyze performance of tumor detection techniques like Knowledge
Based Constraints, Graph Cut Method and Gradient Vector Flow active contour. These three techniques
are computed using sensitivity, specificity and accuracy. From the evaluated result, knowledge based
constraints method is better than other graph cut method and gradient vector flow active contour.
PERFORMANCE EVALUATION OF TUMOR DETECTION TECHNIQUES ijcsa
Automatic segmentation of tumor plays a vital role in diagnosis and surgical planning. This paper deals
with techniques which providing solution for detecting hepatic tumor in Computed Tomography (CT)
images. The main aim of this work is to analyze performance of tumor detection techniques like Knowledge
Based Constraints, Graph Cut Method and Gradient Vector Flow active contour. These three techniquesare computed using sensitivity, specificity and accuracy. From the evaluated result, knowledge based constraints method is better than other graph cut method and gradient vector flow active contour.
Image segmentation is still an active reason of research, a relevant research area
in computer vision and hundreds of image segmentation techniques have been proposed by
the researchers. All proposed techniques have their own usability and accuracy. In this paper
we are going present a review of some best lung nodule existing detection and segmentation
techniques. Finally, we conclude by focusing one of the best methods that may have high
level accuracy and can be used in detection of lung very small nodules accurately.
BRAIN TUMOR DETECTION USING CNN & ML TECHNIQUESIRJET Journal
1) The document proposes two methods for detecting brain tumors using MRI images - one using traditional machine learning classifiers after segmentation with FCM and feature extraction, and one using a convolutional neural network.
2) For the first method, MRI images undergo preprocessing like skull stripping and noise removal before segmentation with Fuzzy C-Means clustering and morphological operations. Features are then extracted and classified with models like KNN, logistic regression, random forest.
3) For the second method, a 5-layer CNN is used to directly classify tumor images. The CNN includes convolutional, max pooling, flatten, and dense layers to reduce parameters and detect tumors with 92.42% accuracy.
Tumor Detection from Brain MRI Image using Neural Network Approach: A ReviewIRJET Journal
This document reviews using neural networks to detect tumors in brain MRIs. It discusses how MRI is commonly used to diagnose soft tissue issues and analyze conditions like trauma and strokes. The paper proposes a methodology for brain tumor detection that includes image acquisition, pre-processing, enhancement, thresholding, and morphological operations using MATLAB. A neural network approach is also presented. The conclusions state that neural networks can help detect, classify, segment, and visualize brain tumors in MRI images with ease and accuracy.
Bone Cancer Detection using AlexNet and VGG16IRJET Journal
The document presents a methodology for detecting bone cancer using deep learning models AlexNet and VGG16. CT scan images are preprocessed using smoothing, averaging and Canny edge detection filters. Features are extracted from the images and classified using AlexNet and VGG16 convolutional neural networks. The results show that VGG16 achieves higher accuracy compared to AlexNet in classifying images as non-cancerous (99.995% vs 88.34%) and stage 1 cancer (99.998% vs 72.28%). Both models achieve 100% accuracy in classifying stage 2 cancer images. VGG16 performs better than AlexNet for bone cancer detection and classification.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IRJET- Image Processing based Lung Tumor Detection System for CT ImagesIRJET Journal
This document presents a method for detecting lung tumors in CT scan images using image processing techniques. The proposed method involves preprocessing images using median filtering for noise removal and contrast adjustment for enhancement. The lungs are then segmented from the images using mathematical morphology. Geometric and textural features are extracted from the segmented region of interest and used as input for an SVM classifier to detect lung cancer. The methodology was tested on a dataset from The Cancer Imaging Archive and was able to successfully detect lung tumors in CT images.
An Enhanced ILD Diagnosis Method using DWTIOSR Journals
1. The document describes an enhanced method for diagnosing Interstitial Lung Disease (ILD) using Discrete Wavelet Transform (DWT).
2. The method involves acquiring CT lung images, enhancing edges using DWT, segmenting the lung region, segmenting blood vessels, extracting texture features from vessels, and classifying images as normal or ILD using Fuzzy Support Vector Machines (FSVM).
3. Wavelet edge enhancement improves segmentation of vessels. Feature extraction using co-occurrence matrices and discriminant analysis reduces dimensions before FSVM classification. The method achieves accurate ILD diagnosis compared to existing approaches.
Brain tumor detection and segmentation using watershed segmentation and morph...eSAT Journals
This document describes a method for detecting and segmenting brain tumors from MRI images using watershed segmentation and morphological operations. The method involves preprocessing the MRI image, removing the skull via thresholding, segmenting the brain tissue using marker-controlled watershed segmentation, detecting the tumor region using erosion-based morphological operations, calculating the tumor area, and determining the tumor location. The method was implemented in MATLAB and experimental results demonstrated that it could accurately extract and detect tumor regions from brain MRI images.
Similar to Computer aided diagnosis for liver cancer using statistical model (20)
Mechanical properties of hybrid fiber reinforced concrete for pavementseSAT Journals
Abstract
The effect of addition of mono fibers and hybrid fibers on the mechanical properties of concrete mixture is studied in the present
investigation. Steel fibers of 1% and polypropylene fibers 0.036% were added individually to the concrete mixture as mono fibers and
then they were added together to form a hybrid fiber reinforced concrete. Mechanical properties such as compressive, split tensile and
flexural strength were determined. The results show that hybrid fibers improve the compressive strength marginally as compared to
mono fibers. Whereas, hybridization improves split tensile strength and flexural strength noticeably.
Keywords:-Hybridization, mono fibers, steel fiber, polypropylene fiber, Improvement in mechanical properties.
Material management in construction – a case studyeSAT Journals
Abstract
The objective of the present study is to understand about all the problems occurring in the company because of improper application
of material management. In construction project operation, often there is a project cost variance in terms of the material, equipments,
manpower, subcontractor, overhead cost, and general condition. Material is the main component in construction projects. Therefore,
if the material management is not properly managed it will create a project cost variance. Project cost can be controlled by taking
corrective actions towards the cost variance. Therefore a methodology is used to diagnose and evaluate the procurement process
involved in material management and launch a continuous improvement was developed and applied. A thorough study was carried
out along with study of cases, surveys and interviews to professionals involved in this area. As a result, a methodology for diagnosis
and improvement was proposed and tested in selected projects. The results obtained show that the main problem of procurement is
related to schedule delays and lack of specified quality for the project. To prevent this situation it is often necessary to dedicate
important resources like money, personnel, time, etc. To monitor and control the process. A great potential for improvement was
detected if state of the art technologies such as, electronic mail, electronic data interchange (EDI), and analysis were applied to the
procurement process. These helped to eliminate the root causes for many types of problems that were detected.
Managing drought short term strategies in semi arid regions a case studyeSAT Journals
Abstract
Drought management needs multidisciplinary action. Interdisciplinary efforts among the experts in various fields of the droughts
prone areas are helpful to achieve tangible and permanent solution for this recurring problem. The Gulbarga district having the total
area around 16, 240 sq.km, and accounts 8.45 per cent of the Karnataka state area. The district has been situated with latitude 17º 19'
60" North and longitude of 76 º 49' 60" east. The district is situated entirely on the Deccan plateau positioned at a height of 300 to
750 m above MSL. Sub-tropical, semi-arid type is one among the drought prone districts of Karnataka State. The drought
management is very important for a district like Gulbarga. In this paper various short term strategies are discussed to mitigate the
drought condition in the district.
Keywords: Drought, South-West monsoon, Semi-Arid, Rainfall, Strategies etc.
Life cycle cost analysis of overlay for an urban road in bangaloreeSAT Journals
Abstract
Pavements are subjected to severe condition of stresses and weathering effects from the day they are constructed and opened to traffic
mainly due to its fatigue behavior and environmental effects. Therefore, pavement rehabilitation is one of the most important
components of entire road systems. This paper highlights the design of concrete pavement with added mono fibers like polypropylene,
steel and hybrid fibres for a widened portion of existing concrete pavement and various overlay alternatives for an existing
bituminous pavement in an urban road in Bangalore. Along with this, Life cycle cost analyses at these sections are done by Net
Present Value (NPV) method to identify the most feasible option. The results show that though the initial cost of construction of
concrete overlay is high, over a period of time it prove to be better than the bituminous overlay considering the whole life cycle cost.
The economic analysis also indicates that, out of the three fibre options, hybrid reinforced concrete would be economical without
compromising the performance of the pavement.
Keywords: - Fatigue, Life cycle cost analysis, Net Present Value method, Overlay, Rehabilitation
Laboratory studies of dense bituminous mixes ii with reclaimed asphalt materialseSAT Journals
Abstract
The issue of growing demand on our nation’s roadways over that past couple of decades, decreasing budgetary funds, and the need to
provide a safe, efficient, and cost effective roadway system has led to a dramatic increase in the need to rehabilitate our existing
pavements and the issue of building sustainable road infrastructure in India. With these emergency of the mentioned needs and this
are today’s burning issue and has become the purpose of the study.
In the present study, the samples of existing bituminous layer materials were collected from NH-48(Devahalli to Hassan) site.The
mixtures were designed by Marshall Method as per Asphalt institute (MS-II) at 20% and 30% Reclaimed Asphalt Pavement (RAP).
RAP material was blended with virgin aggregate such that all specimens tested for the, Dense Bituminous Macadam-II (DBM-II)
gradation as per Ministry of Roads, Transport, and Highways (MoRT&H) and cost analysis were carried out to know the economics.
Laboratory results and analysis showed the use of recycled materials showed significant variability in Marshall Stability, and the
variability increased with the increase in RAP content. The saving can be realized from utilization of recycled materials as per the
methodology, the reduction in the total cost is 19%, 30%, comparing with the virgin mixes.
Keywords: Reclaimed Asphalt Pavement, Marshall Stability, MS-II, Dense Bituminous Macadam-II
Laboratory investigation of expansive soil stabilized with natural inorganic ...eSAT Journals
This document summarizes a study on stabilizing expansive black cotton soil with the natural inorganic stabilizer RBI-81. Laboratory tests were conducted to evaluate the effect of RBI-81 on the soil's engineering properties. The tests showed that with 2% RBI-81 and 28 days of curing, the unconfined compressive strength increased by around 250% and the CBR value improved by approximately 400% compared to the untreated soil. Overall, the study found that RBI-81 effectively improved the strength properties of the black cotton soil and its suitability as a soil stabilizer was supported.
Influence of reinforcement on the behavior of hollow concrete block masonry p...eSAT Journals
Abstract
Reinforced masonry was developed to exploit the strength potential of masonry and to solve its lack of tensile strength. Experimental
and analytical studies have been carried out to investigate the effect of reinforcement on the behavior of hollow concrete block
masonry prisms under compression and to predict ultimate failure compressive strength. In the numerical program, three dimensional
non-linear finite elements (FE) model based on the micro-modeling approach is developed for both unreinforced and reinforced
masonry prisms using ANSYS (14.5). The proposed FE model uses multi-linear stress-strain relationships to model the non-linear
behavior of hollow concrete block, mortar, and grout. Willam-Warnke’s five parameter failure theory has been adopted to model the
failure of masonry materials. The comparison of the numerical and experimental results indicates that the FE models can successfully
capture the highly nonlinear behavior of the physical specimens and accurately predict their strength and failure mechanisms.
Keywords: Structural masonry, Hollow concrete block prism, grout, Compression failure, Finite element method,
Numerical modeling.
Influence of compaction energy on soil stabilized with chemical stabilizereSAT Journals
This document summarizes a study on the influence of compaction energy on soil stabilized with a chemical stabilizer. Laboratory tests were conducted on locally available loamy soil treated with a patented polymer liquid stabilizer and compacted at four different energy levels. The study found that increasing the compaction effort increased the density of both untreated and treated soil, but the rate of increase was lower for stabilized soil. Treating the soil with the stabilizer improved its unconfined compressive strength and resilient modulus, and reduced accumulated plastic strain, with these properties further improved by higher compaction efforts. The stabilized soil exhibited strength and performance benefits compared to the untreated soil.
Geographical information system (gis) for water resources managementeSAT Journals
This document describes a hydrological framework developed in the form of a Hydrologic Information System (HIS) to meet the information needs of various government departments related to water management in a state. The HIS consists of a hydrological database coupled with tools for collecting and analyzing spatial and non-spatial water resources data. It also incorporates a hydrological model to indirectly assess water balance components over space and time. A web-based GIS portal was created to allow users to access and visualize the hydrological data, as well as outputs from the SWAT hydrological model. The framework is intended to facilitate integrated water resources planning and management across different administrative levels.
Forest type mapping of bidar forest division, karnataka using geoinformatics ...eSAT Journals
Abstract
The study demonstrate the potentiality of satellite remote sensing technique for the generation of baseline information on forest types
including tree plantation details in Bidar forest division, Karnataka covering an area of 5814.60Sq.Kms. The Total Area of Bidar
forest division is 5814Sq.Kms analysis of the satellite data in the study area reveals that about 84% of the total area is Covered by
crop land, 1.778% of the area is covered by dry deciduous forest, 1.38 % of mixed plantation, which is very threatening to the
environmental stability of the forest, future plantation site has been mapped. With the use of latest Geo-informatics technology proper
and exact condition of the trees can be observed and necessary precautions can be taken for future plantation works in an appropriate
manner
Keywords:-RS, GIS, GPS, Forest Type, Tree Plantation
Factors influencing compressive strength of geopolymer concreteeSAT Journals
Abstract
To study effects of several factors on the properties of fly ash based geopolymer concrete on the compressive strength and also the
cost comparison with the normal concrete. The test variables were molarities of sodium hydroxide(NaOH) 8M,14M and 16M, ratio of
NaOH to sodium silicate (Na2SiO3) 1, 1.5, 2 and 2.5, alkaline liquid to fly ash ratio 0.35 and 0.40 and replacement of water in
Na2SiO3 solution by 10%, 20% and 30% were used in the present study. The test results indicated that the highest compressive
strength 54 MPa was observed for 16M of NaOH, ratio of NaOH to Na2SiO3 2.5 and alkaline liquid to fly ash ratio of 0.35. Lowest
compressive strength of 27 MPa was observed for 8M of NaOH, ratio of NaOH to Na2SiO3 is 1 and alkaline liquid to fly ash ratio of
0.40. Alkaline liquid to fly ash ratio of 0.35, water replacement of 10% and 30% for 8 and 16 molarity of NaOH and has resulted in
compressive strength of 36 MPa and 20 MPa respectively. Superplasticiser dosage of 2 % by weight of fly ash has given higher
strength in all cases.
Keywords: compressive strength, alkaline liquid, fly ash
Experimental investigation on circular hollow steel columns in filled with li...eSAT Journals
Abstract
Composite Circular hollow Steel tubes with and without GFRP infill for three different grades of Light weight concrete are tested for
ultimate load capacity and axial shortening , under Cyclic loading. Steel tubes are compared for different lengths, cross sections and
thickness. Specimens were tested separately after adopting Taguchi’s L9 (Latin Squares) Orthogonal array in order to save the initial
experimental cost on number of specimens and experimental duration. Analysis was carried out using ANN (Artificial Neural
Network) technique with the assistance of Mini Tab- a statistical soft tool. Comparison for predicted, experimental & ANN output is
obtained from linear regression plots. From this research study, it can be concluded that *Cross sectional area of steel tube has most
significant effect on ultimate load carrying capacity, *as length of steel tube increased- load carrying capacity decreased & *ANN
modeling predicted acceptable results. Thus ANN tool can be utilized for predicting ultimate load carrying capacity for composite
columns.
Keywords: Light weight concrete, GFRP, Artificial Neural Network, Linear Regression, Back propagation, orthogonal
Array, Latin Squares
Experimental behavior of circular hsscfrc filled steel tubular columns under ...eSAT Journals
This document summarizes an experimental study that tested circular concrete-filled steel tube columns with varying parameters. 45 specimens were tested with different fiber percentages (0-2%), tube diameter-to-wall-thickness ratios (D/t from 15-25), and length-to-diameter (L/d) ratios (from 2.97-7.04). The results found that columns filled with fiber-reinforced concrete exhibited higher stiffness, equal ductility, and enhanced energy absorption compared to those filled with plain concrete. The load carrying capacity increased with fiber content up to 1.5% but not at 2.0%. The analytical predictions of failure load closely matched the experimental values.
Evaluation of punching shear in flat slabseSAT Journals
Abstract
Flat-slab construction has been widely used in construction today because of many advantages that it offers. The basic philosophy in
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at the slab column junction which is critical. An attempt has been made to generate generalized design sheets which accounts both
punching shear due to gravity loads and unbalanced moments for cases (a) interior column; (b) edge column (bending perpendicular
to shorter edge); (c) edge column (bending parallel to shorter edge); (d) corner column. These design sheets are prepared as per
codal provisions of IS 456-2000. These design sheets will be helpful in calculating the shear reinforcement to be provided at the
critical section which is ignored in many design offices. Apart from its usefulness in evaluating punching shear and the necessary
shear reinforcement, the design sheets developed will enable the designer to fix the depth of flat slab during the initial phase of the
design.
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Evaluation of performance of intake tower dam for recent earthquake in indiaeSAT Journals
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Intake towers are typically tall, hollow, reinforced concrete structures and form entrance to reservoir outlet works. A parametric
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by Goyal and Chopra accounting interaction effects of added hydrodynamic mass of surrounding and inside water in intake tower of
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This document evaluates the operational efficiency of an urban road network in Tiruchirappalli, India using travel time reliability measures. Traffic volume and travel times were collected using video data from 8-10 AM on various roads. Average travel times, 95th percentile travel times, and buffer time indexes were calculated to assess reliability. Non-motorized vehicles were found to most impact reliability on one road. A relationship between buffer time index and traffic volume was developed. Finally, a travel time model was created and validated based on length, speed, and volume.
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The development of watershed aims at productive utilization of all the available natural resources in the entire area extending from
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Amanikere watershed geographically lies between 110 38’ and 110 52’ N latitude and 760 30’ and 760 50’ E longitude with an area of
415.68 Sq. km. The thematic layers such as land use/land cover and soil maps were derived from remotely sensed data and overlayed
through ArcGIS software to assign the curve number on polygon wise. The daily rainfall data of six rain gauge stations in and around
the watershed (2001-2011) was used to estimate the daily runoff from the watershed using Soil Conservation Service - Curve Number
(SCS-CN) method. The runoff estimated from the SCS-CN model was then used to know the variation of runoff potential with different
land use/land cover and with different soil conditions.
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Estimation of morphometric parameters and runoff using rs & gis techniqueseSAT Journals
This document summarizes a study that used remote sensing and GIS techniques to estimate morphometric parameters and runoff for the Yagachi catchment area in India over a 10-year period. Morphometric analysis was conducted to understand the hydrological response at the micro-watershed level. Daily runoff was estimated using the SCS curve number model. The results showed a positive correlation between rainfall and runoff. Land use/land cover changes between 2001-2010 were found to impact estimated runoff amounts. Remote sensing approaches provided an effective means to model runoff for this large, ungauged area.
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Abstract The nonlinear Static procedure also well known as pushover analysis is method where in monotonically increasing loads are applied to the structure till the structure is unable to resist any further load. It is a popular tool for seismic performance evaluation of existing and new structures. In literature lot of research has been carried out on conventional pushover analysis and after knowing deficiency efforts have been made to improve it. But actual test results to verify the analytically obtained pushover results are rarely available. It has been found that some amount of variation is always expected to exist in seismic demand prediction of pushover analysis. Initial study is carried out by considering user defined hinge properties and default hinge length. Attempt is being made to assess the variation of pushover analysis results by considering user defined hinge properties and various hinge length formulations available in literature and results compared with experimentally obtained results based on test carried out on a G+2 storied RCC framed structure. For the present study two geometric models viz bare frame and rigid frame model is considered and it is found that the results of pushover analysis are very sensitive to geometric model and hinge length adopted. Keywords: Pushover analysis, Base shear, Displacement, hinge length, moment curvature analysis
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asphalt pavements is one of the effective and proven rehabilitation processes. For the laboratory investigations reclaimed asphalt
pavement (RAP) from NH-4 and crumb rubber modified binder (CRMB-55) was used. Foundry waste was used as a replacement to
conventional filler. Laboratory tests were conducted on asphalt concrete mixes with 30, 40, 50, and 60 percent replacement with RAP.
These test results were compared with conventional mixes and asphalt concrete mixes with complete binder extracted RAP
aggregates. Mix design was carried out by Marshall Method. The Marshall Tests indicated highest stability values for asphalt
concrete (AC) mixes with 60% RAP. The optimum binder content (OBC) decreased with increased in RAP in AC mixes. The Indirect
Tensile Strength (ITS) for AC mixes with RAP also was found to be higher when compared to conventional AC mixes at 300C.
Keywords: Reclaimed asphalt pavement, Foundry waste, Recycling, Marshall Stability, Indirect tensile strength.
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Computer aided diagnosis for liver cancer using statistical model
1. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
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Volume: 02 Issue: 12 | Dec-2013, Available @ http://www.ijret.org 84
COMPUTER AIDED DIAGNOSIS FOR LIVER CANCER USING
STATISTICAL MODEL
Vincey Jeba Malar.V1
, Saravana Kumar. E2
1
M.E, 2
M.E (PhD), Professor, Department of CSE, Adhiyamaan college of Engineering, Hosur, India
vinjen04@gmail.com, saraninfo@gmail.com
Abstract
Liver Cancer is one of the most difficult cancer to cure and the number of deaths that it causes generally increasing. The signs and the
symptoms of the liver cancer are not known, till the cancer is in its advanced stage. So, early detection is the main problem. If it is
detected earlier then it can be helpful for the Medical treatment to limit the danger, but it is a challenging task due to the Cancer cell
structure. Interpretation of Medical image is often difficult and time consuming, even for the experienced Physicians. Most
traditional medical diagnosis systems founded needs huge quantity of training data and takes long processing time. Focused on
the solution to these problems, a Medical Diagnosis System based on Hidden Markov Model (HMM) is presented. This paperdescribes
a computer aided diagnosis system for liver cancer that detects the liver tumor at an early stage from the chest CT images. This
automation process reduces the time complexity and increases the diagnosis confidence.
Keywords—HMM, Segmentation, Feature Extraction.
-----------------------------------------------------------------------***----------------------------------------------------------------------
1. INTRODUCTION
Liver cancer, also known as hepatic cancer is a cancer which
starts in the liver, and not from another organ which
eventually migrates to the liver. In other words, there may be
cancers which start from somewhere else and end up in the
liver - those are not (primary) liver cancers. Cancers that
originate in the liver are known as primary liver cancers.
Liver cancer consists of malignant hepatic tumors (growths) in
or on the liver. The most common type of liver cancer is
hepatocellular carcinoma (or hepatoma or HCC), and it tends
to affect males more than females. According to the National
Health Service (NHS), UK [3], approximately 1,500 people in
the United Kingdom die from HCC each year. The World
Health Organization (WHO) [4]says that liver cancer as a
cause of death is reported at less than 30 cases per 100,000
people worldwide, with rates in parts of Africa and Eastern
Asia being particularly high. Experts say that common causes
of HCC are regular high alcohol consumption, having
unprotected sex and injecting drugs with shared needles[1],
[2].
Signs and symptoms of liver cancer tend not to be felt or
noticed until the cancer is well advanced. Hepatocellular
carcinoma (HCC) signs and symptoms may include Jaundice ,
Abdominal pain, Unexplained weight loss, Hepatomegaly ,
Fatigue, Nausea, Emesis (vomiting), Back pain, General
itching, Fever.
Liver cancer, if not diagnosed early is much more difficult to
get rid of. The only way to know whether you have liver
cancer early on is through screening, because you will have no
symptoms. High risk people include those with hepatitis C and
B, patients with alcohol-related cirrhosis, other alcohol
abusers, and those that have cirrhosis as a result of
Hemochromatosis. Diagnostic tests may include Blood test,
Imaging scans(either an MRI or CT scan) and Biopsy(a small
sample of tumor tissue is removed and analyzed).
Unfortunately, because symptoms do not appear until the liver
cancer is well advanced, currently only a small percentage of
patients with HCC can be cured; according to the National
Health Service (January 2010) only about 5%.
Some of the CAD system uses Support Vector Machine
(SVM), Fuzzy Logic, and Artificial Neural
Network(ANN)algorithm. Their disadvantages are time
consumption and needed a lot of data for training. Focused on
the solution to the above problem, Hidden Markov Model
(HMM) is presented for getting more advantage.
2. PROPOSED METHOD
2.1 CT Scan
A computerized axial tomography scan (CT scan or CAT
scan) is an x-ray procedure that combines many x-ray images
with the aid of a computer to generate cross-sectional views
and three-dimensional images of the internal organs and
structures of the body. A CT scan is used to define normal and
2. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
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Volume: 02 Issue: 12 | Dec-2013, Available @ http://www.ijret.org 85
abnormal structures in the body and/or assist in procedures by
helping to accurately guide the placement of instruments or
treatments.It is a medical imaging method that employs
tomography[11]. Tomography is the process of generating a
two-dimensional image of a slice or section through a 3-
dimensional object (a tomogram) (Figure 1).
Fig-1: Block Diagram of Automatic Liver Cancer Detection
CT scans of the abdomen are extremely helpful in defining
body organ anatomy, including visualizing the liver,
gallbladder, pancreas, spleen, aorta, kidneys, uterus,
andovaries.
CT scans in this area are used to verify the presence or
absence of tumors, infection, abnormal anatomy, or changes of
the body from trauma. The Original chest CT image is shown
(Figure 2).
Fig-2: Chest CT image
The CT image is Sufficient for analysis for this proposed
method. Moreover MRI Scan is very costly and the tissues
can‟t able to view clearly. But the CT is not so costly but also
the tissues can be clearly visible in CT scan.
2.2 Segmentation
After the primary noise removal, the segmentation has to be
carried out. The goal of the segmentation is to simplify and/or
change the representation of an image into something that is
more meaningful and easier to analyze. Image segmentation is
typically used to locate objects and boundaries (lines, curves,
etc.) in images.
The segmentation of medical images of soft tissues into
regions is a difficult problem because of the large variety of
their characteristics[8]. All connected components in the
eroded image are labeled and number of connected
components is computed. The labeled components are
segmented depending on region of interest.
Here the region growing techniques is used (Figure 3). This
technique is enough for segmented the lung region. Moreover
it will take less time. Here from a seed it starts growing. It will
compare their neighbor-hood values and grows up.
Fig-3:Segmented CT image using Region Growing
The segmentation process will result in separating the liver
tissue from the rest of the image and only the liver tissues
under examination are considered as the candidate region for
detecting tumor in liver portion.
2.3 Noise Removal
The most important technique for removal of blur in images
due to linear motion and also due to vibrations. Normally an
image is considered as the collection of information and the
occurrence of noises in the image causes degradation in the
quality of the images. So the information associated with an
image tends to loss or damage. It should be important to
restore the image from noises for acquiring maximum
information from images.
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Volume: 02 Issue: 12 | Dec-2013, Available @ http://www.ijret.org 86
Since CT images contain more Gaussian noise, a Gaussian
filter is used for noise removal. Gaussian filters are a class of
linear smoothing filters[10]. The weights are chosen according
to the shape of Gaussian function. The Gaussian smoothing
filter is a very good filter to remove noise drawn from a
normal distribution.
2.4 Morphological Operation
Inorder to smooth the liver boundaries and to retain the
original liver shape, the morphological operations have to be
carried out. The most basic morphological operations are
dilation and erosion. Dilation means adding new pixels to the
boundaries of an object in an image. Erosion means removing
pixels from the boundaries of an object in an image.
The number of pixels added or removed from the object in an
image depends on the size and the shape of the structural
elements used to process the image.
2.5Feature Extraction
When the input data to an algorithm is too large to be
processed and it is suspected to be notoriously redundant
(much data, but not much information) then the input data will
be transformed into a reduced representation set of features
(also named features vector). Transforming the input data into
the set of features is called feature extraction.
If the features extracted are carefully chosen it is expected that
the features set will extract the relevant information from the
input data in order to perform the desired task using this
reduced representation instead of the full size input[5],[12].
Feature extraction involves simplifying the amount of
resources required to describe a large set of data accurately.
Analysis with a large number of variables generally requires a
large amount of memory and computation power.
Fig-4: Feature Extraction
Feature extraction is a general term for methods of
constructing combinations of the variables to get around these
problems while still describing the data with sufficient
accuracy.
2.6. Classification
Classification analyzes the numerical properties of various
image features and organizes data into categories[6].The
classification algorithm employs two phases of processing
namely training and testing.
In the initial training phase, characteristic properties of typical
image features are isolated and based on these, training class is
created. In the subsequent testing phase, these feature-space
partitions are used to classify image features. The
classification algorithm used in this proposed method is
Hidden Markov Model(HMM)[7].
Hidden Markov Model(HMM)
A random sequence has the Markov property if its distribution
is determined solely by its current state. Any random process
having this property is called a Markov random process. For
observable state sequences (state is known from data), this
leads to a Markov chain model. For non-observable states, this
leads to a Hidden Markov Model (HMM).
A hidden Markov model (HMM) is a statistical Markov model
in which the system being modeled is assumed to be a Markov
process with unobserved (hidden) states.
An HMM can be considered as the simplest dynamic Bayesian
network. HMMs are composed of states, which are traversed
according to transition probabilities. The sequence data is
viewed as a series of observations emitted by the states, where
an emission distribution over observations is associated with
each state[13]. Formally, an HMM is characterized by three
stochastic matrices, called the initial, transition and
observation matrices.
The transition matrix, A, is a square matrix that holds the
probabilities of transitioning from each state to any other. The
probability of transitioning from state i to state j is denoted by
aij. The initial distribution vector, π, is a column vector that
stores the probabilities of starting in each state at the
beginning of the sequence. πidenotes the probability of
starting in state i.
Finally, the observation matrix, B, defines the probabilities of
observing each base pair for every state. The probability of
observing observation k in state j is denoted by bj(k).
In a regular Markov model, the state is directly visible to the
observer, and therefore the state transition probabilities are the
only parameters. In a hidden Markov model, the state is not
directly visible, but output, dependent on the state, is visible.
Each state has a probability distribution over the possible
output tokens. Therefore the sequence of tokens generated by
an HMM gives some information about the sequence of
states[9],[14].
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Volume: 02 Issue: 12 | Dec-2013, Available @ http://www.ijret.org 87
Note that the adjective „hidden‟ refers to the state sequence
through which the model passes, not to the parameters of the
model; even if the model parameters are known exactly, the
model is still hidden (Figure 13).
Fig-5: Structure of Hidden Markov model
Most selected Training algorithm used is the Baum- Welch re-
estimation Formulas. The Hidden Markov Model is a finite set
of states, each of which is associated with a (generally
multidimensional) probability distribution. So according to the
training of HMM with regarding the features it will reports the
accrue out more effectively[9].
An artificial neural network is a structure which will attempt
to find a relationship i.e. a function between the inputs, and
the provided output(s), in order that when the net be provided
with unseen inputs, and according with the recorded internal
data (named “weights”), will try to find a correct answer for
the new inputs.
The main difference could be this: In order to use a Markov
chain, the process must depend only in its last state. For use a
neural network, you need a lot of past data.
The Baum-Welch algorithm can be used to train an HMM to
model a set of sequence data. The algorithm starts with an
initial model and iteratively updates it until convergence. The
algorithm is guaranteed to converge to an HMM that locally
maximizes the likelihood (the probability of the training data
given the model).
Since the Baum-Welch algorithm is a local iterative method,
the resulting HMM and the number of required iterations
depend heavily on the initial model. Of the many ways to
generate an initial model, some techniques consider the
training data while others do not.
The multiple observation training sequences are concatenated
together to form one observation sequence forinput into the
Baum-Welch algorithm. All equations involved in the Baum-
Welch process were obtained from Rabiner‟s tutorial on
HMMs In a nutshell, the re-estimated HMM parameters πi, aij
and bj(k) are found using the following equations,
Ōi = Expected frequency (number of times) in state Ni at time
1
aij =
expected number of transition from state I to state ij
expected number of transition from state Ni
bj(k)=
expected number of transition in state i and observing symbol k
exp ected number of times in state i
Fig.-6: Liver Tumor Detection and Classification(1)
Fig-7: Liver Tumor Detection and Classification(2)
The comparison table(Table 1), bar graph(Chart 1), line
graph(Chart 2)for HMM with other methods are shown below.
Table-1: Comparison table for HMM with other methods
Method Detection
Rate
Data Used
Back
propagation
method
89% 67 cases
Artificial neural
networks
90% 11 cases
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Volume: 02 Issue: 12 | Dec-2013, Available @ http://www.ijret.org 88
Lin 72% 29 Cases
Yamamoto 88% 7 Cases
Armato 72% 17 Cases
Hara 77% 8 cases
HMM 96.5% 100cases
Chart-1: Bar graph for HMM detection rate with other
methods
Chart-2: Line graph for HMM detection rate with other
methods
CONCLUSIONS
In this paper, a novel method of segmenting the CT images
been discussed. This research work carried out by taking 2-D
CT images. The proposed work was carried out in 5 phases. In
first phase, image acquisition of liver features and the second
phase is related to the segmentation of ROI features of liver
which can be determined using segmentation algorithm such
as region growing approach. Third phase is removal of the
noise. Fourth phase is feature extraction, it extract the
corresponding liver nodule. Finally, the extracted liver nodules
are classified. In this paper we analyses the result for 2-D
images (Figure 6 & 7). So early detection of Liver Cancer
cells can be highly possible and it reduces the risk as well.
This Bio-imaging method will enhance the proper
radiotherapy treatment for Liver Cancer patients.
FUTURE SCOPE
By this process time complexity is reduced and diagnosis
confidence is increased. A clear identification of liver Cancer
whether it present or not by the CT images by using hidden
Markov model. This process reduces the time complexity and
increases the diagnosis confidence. The collected data contain
noise, the noises are removed. And then segmentation of the
liver images and after that the image is separated. According
to the features of the defected part we can conclude the cancer
is present or not and the patient is in which stage. For
calculation the output image is trained by using the HMM
model and the diagnosis is made from the output.
Our current investigation is to further obtaining a clear
identification of Liver Cancer for 4-D CT image. And also we
believe that combining CT screening with biomarker tests may
help us to detect more liver cancers at earlier stage while
reducing the number of biopsies or operations performed for
non-cancerous abnormalities.
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Back propagation…
Hopfield artificial…
Lin
Yamamoto
Armato
Hara
Our CAD system
Detection Rate
0%
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Detection Rate
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Volume: 02 Issue: 12 | Dec-2013, Available @ http://www.ijret.org 89
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