The document presents a hybrid approach for detecting and recognizing text in images. It consists of three main steps:
1) Image partition using k-means clustering to segment text regions based on color information.
2) Character grouping to detect text characters within each text string based on character size differences and distance between characters.
3) Text recognition of detected characters using a neural network.
The proposed method was evaluated on a street view text dataset, achieving a precision of 0.83, recall of 0.93, and f-measure of 0.25 for text recognition. The approach efficiently and accurately detects and recognizes text with low false positives.
With so much of our lives computerized, it is vitally important that machines and humans can understand one another and pass information back and forth. Mostly computers have things their way we have to & talk to them through relatively crude devices such as keyboards and mice so they can figure out what we want them to do. However, when it comes to processing more human kinds of information, like an old-fashioned printed book or a letter scribbled with a fountain pen, computers have to work much harder. That is where optical character recognition (OCR) comes in. Here we process the image, where we apply various pre-processing techniques like desk wing, binarization etc. and algorithms like Tesseract to recognize the characters and give us the final document. T.Gnana Prakash | K. Anusha"Text Extraction from Image using Python" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-6 , October 2017, URL: http://www.ijtsrd.com/papers/ijtsrd2501.pdf http://www.ijtsrd.com/computer-science/simulation/2501/text-extraction-from-image-using-python/tgnana-prakash
Text detection and recognition from natural sceneshemanthmcqueen
Text characters in natural scenes and surroundings provide us with valuable information about the place and even provide us with some legal/important information. Hence it’s very important for us to detect such text and recognise them which helps a lot. But , it’s not really easy to recognize those text information because of the diverse backgrounds and fonts used for the text. In this paper, a method is proposed to extract the text information from the surroundings. First, a character descriptor is designed with existing standard detectors and descriptors. Then, character structure is modeled at each character class by designing stroke configuration maps.In natural scenes , the text part is generally found on nearby sign boards and other objects. The extraction of such text is difficult because of noisy backgrounds and diverse fonts and text sizes. But many applications have been proven to be efficient in extraction of text from surroundings. For this , the method of text extraction is divided into two processes;
Text detection
Text recognition
With so much of our lives computerized, it is vitally important that machines and humans can understand one another and pass information back and forth. Mostly computers have things their way we have to & talk to them through relatively crude devices such as keyboards and mice so they can figure out what we want them to do. However, when it comes to processing more human kinds of information, like an old-fashioned printed book or a letter scribbled with a fountain pen, computers have to work much harder. That is where optical character recognition (OCR) comes in. Here we process the image, where we apply various pre-processing techniques like desk wing, binarization etc. and algorithms like Tesseract to recognize the characters and give us the final document. T.Gnana Prakash | K. Anusha"Text Extraction from Image using Python" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-6 , October 2017, URL: http://www.ijtsrd.com/papers/ijtsrd2501.pdf http://www.ijtsrd.com/computer-science/simulation/2501/text-extraction-from-image-using-python/tgnana-prakash
Text detection and recognition from natural sceneshemanthmcqueen
Text characters in natural scenes and surroundings provide us with valuable information about the place and even provide us with some legal/important information. Hence it’s very important for us to detect such text and recognise them which helps a lot. But , it’s not really easy to recognize those text information because of the diverse backgrounds and fonts used for the text. In this paper, a method is proposed to extract the text information from the surroundings. First, a character descriptor is designed with existing standard detectors and descriptors. Then, character structure is modeled at each character class by designing stroke configuration maps.In natural scenes , the text part is generally found on nearby sign boards and other objects. The extraction of such text is difficult because of noisy backgrounds and diverse fonts and text sizes. But many applications have been proven to be efficient in extraction of text from surroundings. For this , the method of text extraction is divided into two processes;
Text detection
Text recognition
An implementation of novel genetic based clustering algorithm for color image...TELKOMNIKA JOURNAL
The color image segmentation is one of most crucial application in image processing. It can apply to medical image segmentation for a brain tumor and skin cancer detection or color object detection on CCTV traffic video image segmentation and also for face recognition, fingerprint recognition etc. The color image segmentation has faced the problem of multidimensionality. The color image is considered in five-dimensional problems, three dimensions in color (RGB) and two dimensions in geometry (luminosity layer and chromaticity layer). In this paper the, L*a*b color space conversion has been used to reduce the one dimensional and geometrically it converts in the array hence the further one dimension has been reduced. The a*b space is clustered using genetic algorithm process, which minimizes the overall distance of the cluster, which is randomly placed at the start of the segmentation process. The segmentation results of this method give clear segments based on the different color and it can be applied to any application.
Image to Text Converter PPT. PPT contains step by step algorithms/methods to which we can convert images in to text , specially contains algorithms for images which contains human handwritting, can convert writting in to text, img to text.
Texture features based text extraction from images using DWT and K-means clus...Divya Gera
Text extraction from different kind of images document, caption and scene text images. Discret wavelet transform was used to exract horizontal, vertical and diagonal features and k-means clustering was used to cluster the features into text and background cluster. For simple images k = 2 worked i.e. text and backgroud cluster while for complex images k=3 was used i.e. text cluster, complex background ad simple background.
SCENE TEXT RECOGNITION IN MOBILE APPLICATION BY CHARACTER DESCRIPTOR AND STRU...Cheriyan K M
In text detection, our
previously proposed algorithms are applied to obtain text regions
from scene image. First, we design a discriminative character
descriptor by combining several state-of-the-art feature detectors
and descriptors. Second, we model character structure at each
character class by designing stroke configuration maps.
Text-Image Separation in Document Images using Boundary/Perimeter DetectionIDES Editor
Document analysis plays an important role in office
automation, especially in intelligent signal processing. The
proposed system consists of two modules: block segmentation
and block identification. In this approach, first a document is
segmented into several non-overlapping blocks by utilizing a
novel recursive segmentation technique, and then extracts
the features embedded in each segmented block are extracted.
Two kinds of features, connected components and image
boundary/perimeter features are extracted. Document with
text inside image pose limitations in earlier reported literature.
This is taken care of by applying additional pass of the Run
Length Smearing on the extracted image that contains text.
Proposed scheme is independent of type and language of the
document.
Text detection and recognition in scene images or natural images has applications in computer
vision systems like registration number plate detection, automatic traffic sign detection, image retrieval
and help for visually impaired people. Scene text, however, has complicated background, blur image,
partly occluded text, variations in font-styles, image noise and ranging illumination. Hence scene text
recognition could be a difficult computer vision problem. In this paper connected component method
is used to extract the text from background. In this work, horizontal and vertical projection profiles,
geometric properties of text, image binirization and gap filling method are used to extract the text from
scene images. Then histogram based threshold is applied to separate text background of the images.
Finally text is extracted from images.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Handwritten and Machine Printed Text Separation in Document Images using the ...Konstantinos Zagoris
In a number of types of documents, ranging from forms to archive documents and books with annotations, machine printed and handwritten text may be present in the same document image, giving rise to significant issues within a digitisation and recognition pipeline. It is therefore necessary to separate the two types of text before applying different recognition methodologies to each. In this paper, a new approach is proposed which strives towards identifying and separating handwritten from machine printed text using the Bag of Visual Words paradigm (BoVW). Initially, blocks of interest are detected in the document image. For each block, a descriptor is calculated based on the BoVW. The final characterization of the blocks as Handwritten,Machine Printed or Noise is made by a Support Vector Machine classifier. The promising performance of the proposed approach is shown by using a consistent evaluation methodology which couples meaningful measures along with a new dataset.
Content Based Image Retrieval (CBIR) is one of the
most active in the current research field of multimedia retrieval.
It retrieves the images from the large databases based on images
feature like color, texture and shape. In this paper, Image
retrieval based on multi feature fusion is achieved by color and
texture features as well as the similarity measures are
investigated. The work of color feature extraction is obtained by
using Quadratic Distance and texture features by using Pyramid
Structure Wavelet Transforms and Gray level co-occurrence
matrix. We are comparing all these methods for best image
retrieval
A Texture Based Methodology for Text Region Extraction from Low Resolution Na...CSCJournals
Automated systems for understanding display boards are finding many applications useful in guiding tourists, assisting visually challenged and also in providing location aware information. Such systems require an automated method to detect and extract text prior to further image analysis. In this paper, a methodology to detect and extract text regions from low resolution natural scene images is presented. The proposed work is texture based and uses DCT based high pass filter to remove constant background. The texture features are then obtained on every 50x50 block of the processed image and potential text blocks are identified using newly defined discriminant functions. Further, the detected text blocks are merged and refined to extract text regions. The proposed method is robust and achieves a detection rate of 96.6% on a variety of 100 low resolution natural scene images each of size 240x320.
Research Inventy : International Journal of Engineering and Scienceresearchinventy
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
Optical Character Recognition from Text ImageEditor IJCATR
Optical Character Recognition (OCR) is a system that provides a full alphanumeric recognition of printed or handwritten
characters by simply scanning the text image. OCR system interprets the printed or handwritten characters image and converts it into
corresponding editable text document. The text image is divided into regions by isolating each line, then individual characters with
spaces. After character extraction, the texture and topological features like corner points, features of different regions, ratio of
character area and convex area of all characters of text image are calculated. Previously features of each uppercase and lowercase
letter, digit, and symbols are stored as a template. Based on the texture and topological features, the system recognizes the exact
character using feature matching between the extracted character and the template of all characters as a measure of similarity.
An implementation of novel genetic based clustering algorithm for color image...TELKOMNIKA JOURNAL
The color image segmentation is one of most crucial application in image processing. It can apply to medical image segmentation for a brain tumor and skin cancer detection or color object detection on CCTV traffic video image segmentation and also for face recognition, fingerprint recognition etc. The color image segmentation has faced the problem of multidimensionality. The color image is considered in five-dimensional problems, three dimensions in color (RGB) and two dimensions in geometry (luminosity layer and chromaticity layer). In this paper the, L*a*b color space conversion has been used to reduce the one dimensional and geometrically it converts in the array hence the further one dimension has been reduced. The a*b space is clustered using genetic algorithm process, which minimizes the overall distance of the cluster, which is randomly placed at the start of the segmentation process. The segmentation results of this method give clear segments based on the different color and it can be applied to any application.
Image to Text Converter PPT. PPT contains step by step algorithms/methods to which we can convert images in to text , specially contains algorithms for images which contains human handwritting, can convert writting in to text, img to text.
Texture features based text extraction from images using DWT and K-means clus...Divya Gera
Text extraction from different kind of images document, caption and scene text images. Discret wavelet transform was used to exract horizontal, vertical and diagonal features and k-means clustering was used to cluster the features into text and background cluster. For simple images k = 2 worked i.e. text and backgroud cluster while for complex images k=3 was used i.e. text cluster, complex background ad simple background.
SCENE TEXT RECOGNITION IN MOBILE APPLICATION BY CHARACTER DESCRIPTOR AND STRU...Cheriyan K M
In text detection, our
previously proposed algorithms are applied to obtain text regions
from scene image. First, we design a discriminative character
descriptor by combining several state-of-the-art feature detectors
and descriptors. Second, we model character structure at each
character class by designing stroke configuration maps.
Text-Image Separation in Document Images using Boundary/Perimeter DetectionIDES Editor
Document analysis plays an important role in office
automation, especially in intelligent signal processing. The
proposed system consists of two modules: block segmentation
and block identification. In this approach, first a document is
segmented into several non-overlapping blocks by utilizing a
novel recursive segmentation technique, and then extracts
the features embedded in each segmented block are extracted.
Two kinds of features, connected components and image
boundary/perimeter features are extracted. Document with
text inside image pose limitations in earlier reported literature.
This is taken care of by applying additional pass of the Run
Length Smearing on the extracted image that contains text.
Proposed scheme is independent of type and language of the
document.
Text detection and recognition in scene images or natural images has applications in computer
vision systems like registration number plate detection, automatic traffic sign detection, image retrieval
and help for visually impaired people. Scene text, however, has complicated background, blur image,
partly occluded text, variations in font-styles, image noise and ranging illumination. Hence scene text
recognition could be a difficult computer vision problem. In this paper connected component method
is used to extract the text from background. In this work, horizontal and vertical projection profiles,
geometric properties of text, image binirization and gap filling method are used to extract the text from
scene images. Then histogram based threshold is applied to separate text background of the images.
Finally text is extracted from images.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Handwritten and Machine Printed Text Separation in Document Images using the ...Konstantinos Zagoris
In a number of types of documents, ranging from forms to archive documents and books with annotations, machine printed and handwritten text may be present in the same document image, giving rise to significant issues within a digitisation and recognition pipeline. It is therefore necessary to separate the two types of text before applying different recognition methodologies to each. In this paper, a new approach is proposed which strives towards identifying and separating handwritten from machine printed text using the Bag of Visual Words paradigm (BoVW). Initially, blocks of interest are detected in the document image. For each block, a descriptor is calculated based on the BoVW. The final characterization of the blocks as Handwritten,Machine Printed or Noise is made by a Support Vector Machine classifier. The promising performance of the proposed approach is shown by using a consistent evaluation methodology which couples meaningful measures along with a new dataset.
Content Based Image Retrieval (CBIR) is one of the
most active in the current research field of multimedia retrieval.
It retrieves the images from the large databases based on images
feature like color, texture and shape. In this paper, Image
retrieval based on multi feature fusion is achieved by color and
texture features as well as the similarity measures are
investigated. The work of color feature extraction is obtained by
using Quadratic Distance and texture features by using Pyramid
Structure Wavelet Transforms and Gray level co-occurrence
matrix. We are comparing all these methods for best image
retrieval
A Texture Based Methodology for Text Region Extraction from Low Resolution Na...CSCJournals
Automated systems for understanding display boards are finding many applications useful in guiding tourists, assisting visually challenged and also in providing location aware information. Such systems require an automated method to detect and extract text prior to further image analysis. In this paper, a methodology to detect and extract text regions from low resolution natural scene images is presented. The proposed work is texture based and uses DCT based high pass filter to remove constant background. The texture features are then obtained on every 50x50 block of the processed image and potential text blocks are identified using newly defined discriminant functions. Further, the detected text blocks are merged and refined to extract text regions. The proposed method is robust and achieves a detection rate of 96.6% on a variety of 100 low resolution natural scene images each of size 240x320.
Research Inventy : International Journal of Engineering and Scienceresearchinventy
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
Optical Character Recognition from Text ImageEditor IJCATR
Optical Character Recognition (OCR) is a system that provides a full alphanumeric recognition of printed or handwritten
characters by simply scanning the text image. OCR system interprets the printed or handwritten characters image and converts it into
corresponding editable text document. The text image is divided into regions by isolating each line, then individual characters with
spaces. After character extraction, the texture and topological features like corner points, features of different regions, ratio of
character area and convex area of all characters of text image are calculated. Previously features of each uppercase and lowercase
letter, digit, and symbols are stored as a template. Based on the texture and topological features, the system recognizes the exact
character using feature matching between the extracted character and the template of all characters as a measure of similarity.
A Survey On Thresholding Operators of Text Extraction In VideosCSCJournals
ideo indexing is an important problem that has interested by the communities of visual information in image processing. The detection and extraction of scene and caption text from unconstrained, general purpose video is an important research problem in the context of content-based retrieval and summarization. In this paper, the technique presented is for detection text from frames video. Finding the textual contents in images is a challenging and promising research area in information technology. Consequently, text detection and recognition in multimedia had become one of the most important fields in computer vision due to its valuable uses in a variety of recent technical applications. The work in this paper consists using morphological operations for extract text appearing in the video frames. The proposed scheme well as preprocessing to differentiate among where it as the high similarity between text and background information. Experimental results show that the resultant image is the image with only text. The evaluated criteria are applied with the image result and one obtained bay different operator.
A Survey On Thresholding Operators of Text Extraction In VideosCSCJournals
Video indexing is an important problem that has interested by the communities of visual information in image processing. The detection and extraction of scene and caption text from unconstrained, general purpose video is an important research problem in the context of content-based retrieval and summarization. In this paper, the technique presented is for detection text from frames video. Finding the textual contents in images is a challenging and promising research area in information technology. Consequently, text detection and recognition in multimedia had become one of the most important fields in computer vision due to its valuable uses in a variety of recent technical applications. The work in this paper consists using morphological operations for extract text appearing in the video frames. The proposed scheme well as preprocessing to differentiate among where it as the high similarity between text and background information. Experimental results show that the resultant image is the image with only text. The evaluated criteria are applied with the image result and one obtained bay different operator.
Query Image Searching With Integrated Textual and Visual Relevance Feedback f...IJERA Editor
There are many researchers who have studied the relevance feedback in the literature of content based image
retrieval (CBIR) community, but none of CBIR search engines support it because of scalability, effectiveness
and efficiency issues. In this, we had implemented an integrated relevance feedback for retrieving of web
images. Here, we had concentrated on integration of both textual features (TF) and visual features (VF) based
relevance feedback (RF), simultaneously we also tested them individually. The TFRF employs and effective
search result clustering (SRC) algorithm to get salient phrases. Then a new user interface (UI) is proposed to
support RF. Experimental results show that the proposed algorithm is scalable, effective and accurated
Scene text recognition in mobile applications by character descriptor and str...eSAT Journals
Abstract
Camera-based scene images usually have complex background filled with non-text objects in multiple shapes and colors. The existing system is sensitive to font scale changes and background interference. The main focusof this system is on two character recognition methods. In text detection, previously proposed algorithms are used to search for regions of text strings. Proposed system uses character descriptor which is effective to extract representative and discriminative text features for both recognition schemes. The local features descriptor HOG is compatible with all above key point detectors. Our method of scene text recognition from detected text regions is compatible with the application of mobile devices. Proposedsystem accurately extracts text from natural scene image in presence of background interference.The demo system gives us details of algorithm design and performance improvements of scene text extraction. It is ableto detect text region of text strings from cluttered and recognize characters in the text regions.
Keywords: Scene text detection, scene text recognition, character descriptor, stroke configuration, text understanding, text retrieval.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Anatomical Survey Based Feature Vector for Text Pattern DetectionIJEACS
The vital objective of artificial intelligence is to discover and understand the human competences, one of which is the capability to distinguish several text objects within one or more images exhibited on any canvas including prints, videos or electronic displays. Multimedia data has increased rapidly in past years. Textual information present in multimedia contains important information about the image/video content. However it needs to technologically verify the commonly used human intelligence of detecting and differentiating the text within an image, for computers. Hence in this paper feature set based on anatomical study of human text detection system is proposed.
A Review of Optical Character Recognition System for Recognition of Printed Textiosrjce
IOSR Journal of Computer Engineering (IOSR-JCE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of computer engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in computer technology. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
International Journal of Engineering Research and DevelopmentIJERD Editor
Electrical, Electronics and Computer Engineering,
Information Engineering and Technology,
Mechanical, Industrial and Manufacturing Engineering,
Automation and Mechatronics Engineering,
Material and Chemical Engineering,
Civil and Architecture Engineering,
Biotechnology and Bio Engineering,
Environmental Engineering,
Petroleum and Mining Engineering,
Marine and Agriculture engineering,
Aerospace Engineering.
A comparative study on content based image retrieval methodsIJLT EMAS
Content-based image retrieval (CBIR) is a method of
finding images from a huge image database according to persons’
interests. Content-based here means that the search involves
analysis the actual content present in the image. As database of
images is growing daybyday, researchers/scholars are searching
for better techniques for retrieval of images maintaining good
efficiency. This paper presents the visual features and various
ways for image retrieval from the huge image database.
Image Segmentation from RGBD Images by 3D Point Cloud Attributes and High-Lev...CSCJournals
In this paper, an approach is developed for segmenting an image into major surfaces and potential objects using RGBD images and 3D point cloud data retrieved from a Kinect sensor. In the proposed segmentation algorithm, depth and RGB data are mapped together. Color, texture, XYZ world coordinates, and normal-, surface-, and graph-based segmentation index features are then generated for each pixel point. These attributes are used to cluster similar points together and segment the image. The inclusion of new depth-related features provided improved segmentation performance over RGB-only algorithms by resolving illumination and occlusion problems that cannot be handled using graph-based segmentation algorithms, as well as accurately identifying pixels associated with the main structure components of rooms (walls, ceilings, floors). Since each segment is a potential object or structure, the output of this algorithm is intended to be used for object recognition. The algorithm has been tested on commercial building images and results show the usability of the algorithm in real time applications.
Reconstructing the Path of the Object based on Time and Date OCR in Surveilla...ijtsrd
The inclusion of time based queries in video indexing application is enables by the recognition of time and date stamps in CCTV video. In this paper, we propose the system for reconstructing the path of the object in surveillance cameras based on time and date optical character recognition system. Since there is no boundary in region for time and date, Discrete Cosine Transform DCT method is applied in order to locate the region area. After the region for time and date is located, it is segmented and then features for the symbols of the time and date are extracted. Back propagation neural network is used for recognition of the features and then stores the result in the database. By using the resulted database, the system reconstructs the path for the object based on time. The proposed system will be implemented in MATLAB. Pyae Phyo Thu | Mie Mie Tin | Ei Phyu Win | Cho Thet Mon "Reconstructing the Path of the Object based on Time and Date OCR in Surveillance System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-5 , August 2019, URL: https://www.ijtsrd.com/papers/ijtsrd27981.pdfPaper URL: https://www.ijtsrd.com/home-science/education/27981/reconstructing-the-path-of-the-object-based-on-time-and-date-ocr-in-surveillance-system/pyae-phyo-thu
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Connector Corner: Automate dynamic content and events by pushing a button
C04741319
1. IOSR Journal of Engineering (IOSRJEN) www.iosrjen.org
ISSN (e): 2250-3021, ISSN (p): 2278-8719
Vol. 04, Issue 07 (July. 2014), ||V4|| PP 19-20
International organization of Scientific Research 13 |
P a g e
A Hybrid Approach To Detect And Recognize Text In Images
1
Miss.Poonam B. Kadam, 2
Prof. Latika R. Desai
1
(Dept of Computer Engineering, 2
(Dept of Computer Engineering
Abstract: - Text detection and recognition in images is a research area which attempts to develop a computer
system with the ability to automatically read text from images or videos. This problem is challenging due to the
complex background and large variations of these components features like color, size, shape, orientation or
texture. Here new proposed framework is explored which can automatically detect and recognize aligned text
from urban scene images e.g.shop name,landmark,street.The proposed framework evaluated on new generated
dataset.It consist of a three main step 1) image partition perform to segment text based on color information.2)
character grouping to detect text character in every text string depend on character size differences, distance
between neighboring characters.3) the detected text recognition using neural network. This proposed method
efficiently and accurately detects and recognizes the text with a low false positive.
Keywords: - Text detection, preprocessing, segmentation, character recognition.
I. INTRODUCTION
Many facilities are involved in human reading and similarly, there has been a large amount of research
on computational methods for text recognition. The problem of developing a model for reading is broad,
surrounding many facets of information. Also there are many typefaces, and they may be encountered at
different legible sizes. Text is frequently printed on a surface and viewers generally doesn't want that the surface
be fronto-parallel to their eyes in order to read it. Additionally, changing lighting conditions and designers use
many colors for background and text. All of these factors leads to make the robust reading problem very
challenging. Text understanding system consist of four stages: text detection, text localization, text extraction,
text recognition. These stages are used interchangeably. Text detection consists of determination of the
occurrence of text in images. Text localization is the process of determining the location of text. In text
extraction stage the text components in images are segmented from background. After, the extracted text images
can be converted into plain text using OCR technology. Through Text detection and recognition in images is
coupling of text-based searching technologies and optical character recognition (OCR).Text in images or video
is a powerful source of information. Caption embedded with news videos provide information about name of
related location, people, date and time, purpose. Caption provide an summary or abstract of the image.
II. LITERATURE REVIEW
There have been a different methods dealing with text detection and recognition in images [4, 17].
Comprehensive surveys can be found in [8].Some approaches to text detection classified into three categories:
texture-based methods, region based methods and hybrid methods. Texture-based methods [3,16] involves
texture properties of text such as style, orientation and the construction of gray-level co-occurrence matrix.
These methods are computation demanding as all locations and scales are exhaustively scanned. Moreover,
these algorithms mostly concentrate to detect horizontal texts. Region based methods [7,18] use the properties of
the color or gray scale or alignment in a text region or their differences in properties of the background. First
extract candidate text regions through segmentation or clustering and then remove non-text regions.
The third category, hybrid methods [9]is a fusion of region-based and texture-based methods. Different
document or web, e-mail images, in which text characters are normalized and proper resolutions, natural scene
images, embed text can be in size, shapes and orientations into complex background. It is impossible to
recognize text in images directly through OCR software because of complex background. Thus, we need to
detect image regions containing text and their corresponding orientations. This is compatible with the detection
procedure described text extraction algorithms survey[4,6].
Yi Method work in two stages for text detection first, the connected component in image partition based on
gradient and color feature, then through text line grouping and adjacent character grouping [1]done which gives
set of candidate or text line in image obtained. Then, Haar features are extracted from gradient maps and stroke
by the block patterns presented in [2].
2. A Hybrid Approach To Detect And Recognize Text In Images
International organization of Scientific Research 14 | P a g e
III. SYSTEM DESIGN
Fig 1. System Architecture
The proposed framework used to detect and recognize scheme efficient in urban scene context. This is
an unified framework for text detection and recognition. The framework consist of three stages 1) image
partition perform to segment text based on color information.2) character grouping to detect text characters in
same text string depend on character size differences, distance between neighboring characters.3) the text
recognition using neural network of detected text. After study of previous methods we found that combination
color based partition and adjacent character grouping achieves better results in text detection. Therefore here by
using effective color segmentation approach for text detection which help to get accurate result for recognition.
Brief description of our proposed work.
3.1 Module I: Preprocessing
First, preprocessing and segmentation of input urban scene image, involves removing low frequency
background noise, removing reflections, it is used for efficient extraction of text region information, a text
region detector is designed to estimate the text confidence and the corresponding scale, based on which text
candidate components are segmented and analyzed accurately. This stage significantly increase the reliability of
an optical inspection. Here new hybrid color image segmentation approach is used. In most of images, color
uniformity acts as stronger indicator to distinguish text characters of text string from background. Here k-means
algorithm used.
K-Means Algorithm
The whole process of clustering is depicted in Figure 11. Given a set of observations (x1, x2,..., xn),
where each observation is a d-dimensional real vector, k-means clustering aims to partition the n observations
into k sets (k ≤ n) S = S1, S2,..., Sk so as to minimize the within-cluster sum of squares (WCSS):
where µi is the mean of points in Si.
The initial step is choosing k cluster centroid positions, sometimes called as seeds randomly from the image, the
clusters are named as m1,m2,……,mk. Then, the algorithmruns iteratively, which mainly consists of two steps.
Assignment step:
Assign each observation to the cluster whose mean yields the least within cluster sum of squares (WCSS). Since
the sum of squares is the squared Euclidean distance, this is intuitively the nearest mean:
(1)
(2)
3. A Hybrid Approach To Detect And Recognize Text In Images
International organization of Scientific Research 15 | P a g e
where each xp is assigned to exactly one St , even if it could be is assigned to two or more of them.
Update step:
Calculate the new means as the centroids of the observations in the new clusters:
In second step, calculate the new means as centroid of the clusters. The iteration done until assignments no
longer change, which is a convergence to a local optimum. The k-means clustering is that we must specify the
number of clusters in advance.
After the color quantization, the image is divided into different clusters, and we treat the connected
components with the same cluster labels as a region. Each region is represented by its average color
components. The output of the stage is the image partitioned into thousands of tiny regions quantized by a small
number of colors.
3.2. Module II: Segmentation
The first step in a process of character recognition is a detection of a text area. After detecting the image text
area segment it using horizontal projection. After text is segmented then characters are extracted from horizontal
segments. Extracted characters are normalized by checking light related parameters like brightness etc. Then,
recognized using by NN algorithm.
Edge Detection
Let us define input image as a rectangular area with horizontal and vertical edges. The high density of
vertical and horizontal edges on a small area is in different cases caused by contrast characters, but not in every
case. This process can cause sometimes detect a wrong area that does not correspond to actual text in image.
Because of this, we detect several candidates using this algorithm, and then select the best one by a further
heuristic analysis. The input image edge can detected vertically and horizontally.
Here segmentation using a horizontal projection is done. After cropping text area is deskewed, segment it by
detecting spaces in its horizontal projection The adaptive thresholding is used to separate dark foreground from
light background with non-uniform illumination before segmentation. After the thresholding horizontal
projection perform f (x,y) to find horizontal boundaries between segmented characters. These boundaries
correspond to peaks in the graph of the horizontal projection.
3.3. Module III: Character Recognition
After pre-processing and segmentation step feature set is extracted this is further used for training and
recognition step. Feature extraction stage where features of the characters that are crucial for classifying them at
recognition stage are extracted.
After this Neural network used as learning mechanism .In this comparison of input character pattern with stored
character training set and find their matching probability. In the used method, various characters are taught to
the network in a supervised manner. A labeled input character also have several variant patterns of the same
character are taught to the network under the same label. Using it the network learns various possible variations
of a single pattern and becomes adaptive in nature. This process also know as Character Matching which
compare the segments against characters in a database, it check matching score of each database template to
input character segment.
IV. RESULT
We evaluated proposed method on the most challenging street scene text dataset ,namely SVT (street
view, landmarks, boards).The images in used dataset similar to traditional OCR setting which not contain low
contrast or low resolution images. The motivation of this approach is to detect significant and accurate text in
image and recognize it. The combination of color and texture based segmentation and after that using neural
network for highly accurate character recognition. In recognition, the classifiers are evaluated with several
metrics like accuracy refers to the percentage of the testing samples which were correctly recognized. Accuracy
refers to the percentage of the characters of the testing samples which were correctly recognized. We have tested
many random sample urban scene images which are collected as test set. We show performance of our method
in GUI mention below.
(3)
4. A Hybrid Approach To Detect And Recognize Text In Images
International organization of Scientific Research 16 | P a g e
4.1. Dataset and Evaluation
We used the street view text(SVT)images used for robust word recognition in our system. Our street
view text dataset contain images taken from Google. We have tested 100 sample images. Most of the images are
from urban signage. Our work focus on detecting words and recognizing respectively.
In our experiment color based segmentation and neural network are performed to partion and
recognition of detected text. After testing 100 sample referred images from outdoor (street) indoor(mall and
office).Our dataset the resulting precision, recall and f-measure are 0.83,0.93,0.25 respectively. Based on
definition of precision and recall are: Precision (P) is the proportion of the predicted positive cases(tp) that were
correct,as calculated using the equation:
precision=|tp| / |tp + fp|
The recall or true positive rate (tp) is the proportion of positive:
recall= |tp| / |tp + fn|
where false positive(fp) and false negative(fn).The f measures is combination of the precision and recall
f = 2.precision.recall / (precision + recall)
Sample Input Image from street scene text dataset.
Step-I Preprocessing and Segmentation
As shown in Figure we get cropped words separately after color segmentation. The Figure 2.shows different
color segments in image depending that we get partitioned image for text detection.
Fig 2.After Preprocessing and Segmentation
Step-II Recognition
All adjacent character groups i.e cropped words are recognized accurately as shown in Figure .Also we can
separately recognize each word as shown in Figure3,4.
5. A Hybrid Approach To Detect And Recognize Text In Images
International organization of Scientific Research 17 | P a g e
Fig 3. Character Recognition
Fig 4. Separately Recognition of subimage
6. A Hybrid Approach To Detect And Recognize Text In Images
International organization of Scientific Research 18 | P a g e
4.2. Result Table
Table 1. Sample Images with Result Table
V. CONCLUSION
This is unified approach on learning based methods for text detection from image having complex
background and normalized text recognition. We have proposed the detection model eliminates the need for
layout rules by learning spatial context parameters. Also, eliminate the peephole view of the sliding window
approach and unify the entire process under a probabilistic model. Finally, robust reader needs rough text
detection windows and completes both word and character segmentation in a recognition-driven process. To
deal with the problems involved in training a computer to read from detection, to segmentation and recognition.
To read text information embedded in those images, we propose a new framework which is more concentrating
on how to give detected text having less false positive input to OCR give efficient and accurate recognized text.
Here we choose texture color based image segmentation method for text detection and fast, accurate recognition
perform using neural network framework.
VI. FUTURE ENHANCEMENT
There are different challenges occurs in text extraction from image because of size,style, orientation,
shadow which makes recognition difficult. To improve the efficiency and transplant these algorithms into a
system prepared for way finding of visually impaired people, keyword search engine application.
REFERENCES
[1] C. Yi and Y. Tian,Text string detection from natural scenes by structure-based partition and grouping,
vol. 19, no. 12,2011.
[2] Chen and A. L. Yuille,Detecting and reading text in natural scenes in Proc. IEEE Conf. Comput. Vis.
Pattern Recognit., 2004, pp. 366.
[3] N. Zhong,B. Epshtein, E. Ofek, and Y. Wexler, Detecting text in nature scenes with stroke width
transform, in Proc.IEEE Conf. Comput. Vis. Pattern Recognit., 2010, pp. 2963.
[4] K. C. Jung, K. I. Kim, and A. K. Jain,Text information extraction in images and video: A survey, Pattern
Recognit., vol. 5, pp. 977.May 2004.
[5] Datong Chen, Jean-Marc Odobez,Herve Bourlard,Text detection and recognition in images and video
frames Pattern Recognition, vol.37 ,2004,pp 595.
[6] Asif Shahab, Faisal Shafait, Andreas Dengel,ICDAR 2011 Robust Reading Competition Challenge 2:
Reading Text in Scene Images, Int. Jour.on Document Analysis and Recognition,2011.
7. A Hybrid Approach To Detect And Recognize Text In Images
International organization of Scientific Research 19 | P a g e
[7] Yassin M. Y. Hasan and Lina J. Karam,Morphological Text Extraction from Images, IEEE Transactions
on Image Processing, 9 (11) (2000) 1978-1983.
[8] Y. Pan, X. Hou, and C. Liu, A hybrid approach to detect and localize texts in natural scene images, IEEE
Trans. on Image Processing, vol. 20, no. 3, pp.800, Mar. 2011.
[9] K. I. Kim, K. Jung, and J. H. Kim.Texture based approach for text detection in images using support
vector machines and continuously adaptive mean shift algorithm. IEEE Trans. PAMI, 2003.
[10] L. Neumann and J. Matas.A method for text localization and recognition in real-world images. In Proc. of
ACCV, 2010.
[11] Chucai Yi ,Yingli Tain Localizing text in scene images by boundary clustering,stroke segmentation,and
string fragment classi_cation IEEE trans.on Image processing Vol 21 No.9 Sep 2012.
[12] Anand Mishra, Karteek Alahari,C.V.JawaharTop down and Bottom Up cues for text recognition IEEE
conference of Image processing,2012.
[13] R.Minetto, N.Thome,M.cord,Text detection and Recognition in Urban Scene IEEE 2011.
[14] Ning-Yu An ,Chi-Man PunColor image segmentation using adaptive color quantization and
multiresolution texture characterization. Springer-Verlag London Limited 25 May 2012.
[15] Fakhraddin Mamedov, Jamal Fathi Abu Hasna.Character Recognition Using Neural Networks, Near East
University, North Cyprus, Turkey via Mersin-10, KKT C2005.
[16] R. Jiang, F. Qi, L. Xu, and G.Wu, A learning-based method to detect and segment text from scene
images, J. Zhejiang Univ., vol. 8, pp.568-574, Apr. 2007.
[17] Pranob, K Charles, V.Harish,A Review on the Various Techniques used for Optical Character
Recognition, Vol. 2, Issue 1,Jan-Feb 2012.
[18] Neural Network Approach To Mathematical Expression Recognition System, IJERT Dec 2012.
[19] Anil.K.Jain TextFeature extraction methods for character recognition-A Survey, Pattern Recognition, vol.
29, no. 4, pp. 641-662, 2006.