The study was carried out using the UAV for analyzing the characteristics of debris in order to present the methodology to estimate the quantitative amount of debris caught in small river facilities. A total of six small rivers that maintained the form of a natural river were selected for collecting UAV images, and the grouping of each target in the image was carried out using the object-based classification method, and based on the object-based classification result of the UAV images, the land cover classification for the status of factors causing the generation of debris for six target sections was carried out by applying the screen digitizing method. In addition, in order to verify the accuracy of the classification result, the error matrix was performed, securing the reliability of the result. The accuracy analysis result showed that for all six target sections, the overall accuracy was 93.95% and the Kappa coefficient was 0.93, showing an excellent result.
An Automated Approach of Shoreline Detection Applied to Digital Videos using ...Dwi Putra Asana
Abstract: This study aims to detect a shoreline location and its changes automatically in the temporal resolution.
This approach is implemented on the coastal video monitoring system applications. The proposed method applied
data mining by using two main systems-a training system using classification and shoreline detection systems with
Self-Organizing Map (SOM) and K-Nearest Neighbor (K-NN) algorithms. The training system performs feature
texture extraction using agray-level co-occurrence matrix and the results are stored to classification process. The
detection system has five processing stages: contrast stretching preprocessing and morphological contrast
enhancement, SOM clustering, morphological operations, feature extraction and K-NN classification and detection
shoreline. Preprocessing was used to improve the video image contrast and reliability. SOM algorithm in
segmenting objects in the onshore video images. Morphological operations were applied to eliminate noise on the
objects that were not needed in the spatial domain. The segmentation results of video frames classified by K-NN.
The aim is to provide the class labels on each region segmentation results, namely, sea label, land label and sky
label. The determination of the shoreline is done by scanning the neighboring pixels from the edge of land class
label after binary image transformation. The shoreline change detection was performed by comparing the position of
existing shoreline and shoreline position in the reference video frame. A Receiver Operating Characteristic (ROC)
curve was used to evaluate the performance of shoreline detection systems. The results showed that the combination
of SOM and K-NN was able to detect shoreline and its changes accurately
Urban Land Cover Change Detection Analysis and Modelling Spatio-Temporal Grow...Bayes Ahmed
This is my final Mater thesis presentation. The thesis defense was held on March' 07, 2011 at 15:30 in the seminar room of Universitat Jaume I (UJI), Castellón, Spain.
Airborne gravity anomaly over Delta State in the Niger delta basin of Nigeria has been interpreted to obtain the structural trends/types and depth to basement in the state. The residual gravity anomaly obtained from a second order polynomial operation on the observed field data was enhanced by a first order filtering operation based on the regional geology. This was converted to a gridded data and analyzed qualitatively to reveal NS and EW trending subsurface structures. Inverse and forward modeling using Oasis Montaj software were applied to selected portions using geological models of sphere and dyke to reveal syncline and anticline structures at depths of between 2005 m to 7372 m, with density contrast of between 1.12 gcm-3 and 2.70 gcm-3. The Euler deconvolution operation with a structural index of one, reveal depths between 124.2 to 16,000 m. The results show that the maximum depth to basement in the area occurs in the northern part of the state with maximum depth of 16,000 m.
An Automated Approach of Shoreline Detection Applied to Digital Videos using ...Dwi Putra Asana
Abstract: This study aims to detect a shoreline location and its changes automatically in the temporal resolution.
This approach is implemented on the coastal video monitoring system applications. The proposed method applied
data mining by using two main systems-a training system using classification and shoreline detection systems with
Self-Organizing Map (SOM) and K-Nearest Neighbor (K-NN) algorithms. The training system performs feature
texture extraction using agray-level co-occurrence matrix and the results are stored to classification process. The
detection system has five processing stages: contrast stretching preprocessing and morphological contrast
enhancement, SOM clustering, morphological operations, feature extraction and K-NN classification and detection
shoreline. Preprocessing was used to improve the video image contrast and reliability. SOM algorithm in
segmenting objects in the onshore video images. Morphological operations were applied to eliminate noise on the
objects that were not needed in the spatial domain. The segmentation results of video frames classified by K-NN.
The aim is to provide the class labels on each region segmentation results, namely, sea label, land label and sky
label. The determination of the shoreline is done by scanning the neighboring pixels from the edge of land class
label after binary image transformation. The shoreline change detection was performed by comparing the position of
existing shoreline and shoreline position in the reference video frame. A Receiver Operating Characteristic (ROC)
curve was used to evaluate the performance of shoreline detection systems. The results showed that the combination
of SOM and K-NN was able to detect shoreline and its changes accurately
Urban Land Cover Change Detection Analysis and Modelling Spatio-Temporal Grow...Bayes Ahmed
This is my final Mater thesis presentation. The thesis defense was held on March' 07, 2011 at 15:30 in the seminar room of Universitat Jaume I (UJI), Castellón, Spain.
Airborne gravity anomaly over Delta State in the Niger delta basin of Nigeria has been interpreted to obtain the structural trends/types and depth to basement in the state. The residual gravity anomaly obtained from a second order polynomial operation on the observed field data was enhanced by a first order filtering operation based on the regional geology. This was converted to a gridded data and analyzed qualitatively to reveal NS and EW trending subsurface structures. Inverse and forward modeling using Oasis Montaj software were applied to selected portions using geological models of sphere and dyke to reveal syncline and anticline structures at depths of between 2005 m to 7372 m, with density contrast of between 1.12 gcm-3 and 2.70 gcm-3. The Euler deconvolution operation with a structural index of one, reveal depths between 124.2 to 16,000 m. The results show that the maximum depth to basement in the area occurs in the northern part of the state with maximum depth of 16,000 m.
Application of Remote Sensing Techniques for Change Detection in Land Use/ La...iosrjce
IOSR Journal of Applied Geology and Geophysics (IOSR-JAGG) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of Applied Geology and Geophysics. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Applied Geology and Geophysics. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Land Use and Land Cover change monitoring of Surajpur Wetland, Uttar Pradesh:...Arnab Saha
Abstract:
Wetlands are extremely important areas throughout the world for wildlife protection, recreation, sediment control and flood prevention. Wetlands are important bird’s habitats and birds use them for feeding, roosting, nesting and rearing their young. In Surajpur Wetland are mainly used for agriculture, fisheries, reclamation for harboring and irrigation purposes. In this paper an attempt is made to study the changes in land use and land cover in Surajpur wetland area over 11 years’ period (2003-2014). LULC is an important component in understanding the interactions of the human activities with the environment and thus it is necessary to be able to simulate changes. The land cover mapping of study area was attempted using remotely sensed images of Landsat and Google Earth imagery. The study area was classified into five categories on the basis of field study, geographical conditions, and remote sensing data. LULC changes have been detected by image processing method in EDRAS imagine 2014 and ArcGIS 10.3. The eleven years’ time period of 2003-2014 shows the major type of land use change. Vegetation area that occupied about around 60 per cent of the Surajpur wetland area in 2003 has decreased to 34.25 percent in 2014. Wetland is increased 8.17 percent and Urban area, Fallow land and Water body also have experienced change. Finally, through the work it is recommended that the wetlands need detail mapping through the use of advance remote sensing techniques like microwave and LIDAR for restoration and management of wetland.
Keywords: LULC, ArcGIS, Surajpur, ERDAS, Remote Sensing
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.
Change detection analysis in land use / land cover of Pune city using remotel...Nitin Mundhe
Lecture delivered in the National Conference entitled “Monitoring Degraded Lands” jointly organized by Agasti Arts, Commerce and Dadasaheb Rupwate Science
College, Akole and Maharashtra Bhugolshastra Parishad Pune to be held on 4 to 6 February 2014.
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.
Since the recent development of UAVs(Unmanned Aerial Vehicles) and digital sensors technology has enabled the acquisition of high-resolution image data, it is considered that the image data of riverside can be analysed. Therefore, this study analyses the applicability of remote sensing techniques through image analysis in river systems and habitats. The target stream in this study was the Cheongmi stream and the applicability of the river environmental evaluation technique was analysed through image analysis. The satellite images used for the analysis of river topography and environments were compared with the aerial images taken by a micro UAV), and the river environmental evaluation was carried out with the field research at the same time. The data acquisition range and application limit by river environmental evaluation technique proposed previously were evaluated, and as a result, it was found that it was possible to draw various evaluation parameters using a drone that could take an image at a low altitude in comparison to satellite images.
Application of Remote Sensing Techniques for Change Detection in Land Use/ La...iosrjce
IOSR Journal of Applied Geology and Geophysics (IOSR-JAGG) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of Applied Geology and Geophysics. The journal welcomes publications of high quality papers on theoretical developments and practical applications in Applied Geology and Geophysics. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Land Use and Land Cover change monitoring of Surajpur Wetland, Uttar Pradesh:...Arnab Saha
Abstract:
Wetlands are extremely important areas throughout the world for wildlife protection, recreation, sediment control and flood prevention. Wetlands are important bird’s habitats and birds use them for feeding, roosting, nesting and rearing their young. In Surajpur Wetland are mainly used for agriculture, fisheries, reclamation for harboring and irrigation purposes. In this paper an attempt is made to study the changes in land use and land cover in Surajpur wetland area over 11 years’ period (2003-2014). LULC is an important component in understanding the interactions of the human activities with the environment and thus it is necessary to be able to simulate changes. The land cover mapping of study area was attempted using remotely sensed images of Landsat and Google Earth imagery. The study area was classified into five categories on the basis of field study, geographical conditions, and remote sensing data. LULC changes have been detected by image processing method in EDRAS imagine 2014 and ArcGIS 10.3. The eleven years’ time period of 2003-2014 shows the major type of land use change. Vegetation area that occupied about around 60 per cent of the Surajpur wetland area in 2003 has decreased to 34.25 percent in 2014. Wetland is increased 8.17 percent and Urban area, Fallow land and Water body also have experienced change. Finally, through the work it is recommended that the wetlands need detail mapping through the use of advance remote sensing techniques like microwave and LIDAR for restoration and management of wetland.
Keywords: LULC, ArcGIS, Surajpur, ERDAS, Remote Sensing
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.
Change detection analysis in land use / land cover of Pune city using remotel...Nitin Mundhe
Lecture delivered in the National Conference entitled “Monitoring Degraded Lands” jointly organized by Agasti Arts, Commerce and Dadasaheb Rupwate Science
College, Akole and Maharashtra Bhugolshastra Parishad Pune to be held on 4 to 6 February 2014.
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.
Since the recent development of UAVs(Unmanned Aerial Vehicles) and digital sensors technology has enabled the acquisition of high-resolution image data, it is considered that the image data of riverside can be analysed. Therefore, this study analyses the applicability of remote sensing techniques through image analysis in river systems and habitats. The target stream in this study was the Cheongmi stream and the applicability of the river environmental evaluation technique was analysed through image analysis. The satellite images used for the analysis of river topography and environments were compared with the aerial images taken by a micro UAV), and the river environmental evaluation was carried out with the field research at the same time. The data acquisition range and application limit by river environmental evaluation technique proposed previously were evaluated, and as a result, it was found that it was possible to draw various evaluation parameters using a drone that could take an image at a low altitude in comparison to satellite images.
Low resource deep learning to detect waste intensity in the river flowjournalBEEI
Waste has become a significant problem in Indonesia, especially in the capital city of Jakarta due to many disasters caused by it. The one cause of flooding is the blockage of river flow by waste. The monitoring of litter is essential to find out the waste intensity in the river. The research was formed which aims to produce an application that can detect, track, and calculate river waste using YOLO v3 algorithm. This research was done in order to simplify the process of monitoring waste in the river and can calculate waste using video. This research uses 340 images directly from photos and videos, captured by researchers-detection of waste processed frame by frame by changing video into several structures. From the acquired result from the experiment, it's proven that YOLO v3 can be used for detection and counting waste recorded on video. The result of this research is an application that can detect waste and it is able to detect said objects with 98.74% of confidence from case video.
study and analysis of hy si data in 400 to 500IJAEMSJORNAL
The ability to extract information about world and present it in way that our visual perception can comprehend is ultimate goal of imaging science in remote sensing .Hyperspectral imaging system is most powerful tool in the field of remote sensing also called as imaging spectroscopy, It is new technique used by researcher to detect terrestrial, vegetation and mineral. This paper reports analysis of hyperspectral images. Firstly the hyperspectral image analyzed by using supervised classification of Amravati region from Maharashtra province of India. The report reveals spectral analysis of Amravati region. We acquired satellite imagery to perform the classification using maximum like hood classifier. Analysis is performing in ERDAS to determine the spectral reflectance against the no of band. The analytical outcome of paper is representing the soil, water, vegetation index of the region.
Performances evaluation of surface water areas extraction techniques using l...Abdelazim Negm
This presentation was presented at:
9th International Conference Interdisciplinarity in Engineering, INTER-ENG 2015, 8-9 October 2015, Tirgu-Mures, Romania
The complete paper will be published in Procedia Technology Journal soon.
Using Remote Sensing Techniques For Monitoring Ecological Changes In Lakes: C...IJERA Editor
The ability to use remote sensing in studying lake ecology lies in the capability of satellite sensors to measure
the spectral reflectance of constituents in water bodies. This reflectance can be used to determine the
concentration of the constituents of the water column through mathematical relationships. This work identified a
simple linear equation for estimating suspended matter in Lake Naivasha with reflectance in Landsat7 ETM+
image. A R² = 0.94, n = 6 for suspended matter was obtained. Archive of Landsat imagery was used to
produce maps of suspended matter concentrations in the lake. The suspended matter concentrations at five
different locations in the lake over 30 year’s period were then estimated. It was therefore concluded that the
ecological changes Lake Naivasha is experiencing is the result of the high water abstraction and the effect of
climate change.
Using Remote Sensing Techniques For Monitoring Ecological Changes In Lakes: C...IJERA Editor
The ability to use remote sensing in studying lake ecology lies in the capability of satellite sensors to measure
the spectral reflectance of constituents in water bodies. This reflectance can be used to determine the
concentration of the constituents of the water column through mathematical relationships. This work identified a
simple linear equation for estimating suspended matter in Lake Naivasha with reflectance in Landsat7 ETM+
image. A R² = 0.94, n = 6 for suspended matter was obtained. Archive of Landsat imagery was used to
produce maps of suspended matter concentrations in the lake. The suspended matter concentrations at five
different locations in the lake over 30 year’s period were then estimated. It was therefore concluded that the
ecological changes Lake Naivasha is experiencing is the result of the high water abstraction and the effect of
climate change.
Land Use/Land Cover Mapping Of Allahabad City by Using Remote Sensing & GIS IJMER
The present study was carried out to produce and evaluate the land use/land cover maps by on
screen visual interpretation. The studies of land cover of Allahabad city (study area) consist of 87517.47 ha
out of which 5500.35 ha is build up land (Urban / Rural) Area. In this respect, the Build up land (Urban /
Rural) area scorers 6.28% of the total area. It has also been found that about 17155.001ha (19.60 %) of
area is covered by current fallow land. The double/triple crop land of 30178.44ha (34.84%). The area
covered by gullied / ravines is 1539.20 ha (1.75 %) and that of the kharif crop land is 2828.00 ha (3.23 %).
The area covered by other wasteland is 2551.05ha (2.91%). Table 4.1 shows the area distribution of the
various land use and land cover of Allahabad city.
International Journal of Engineering Inventions (IJEI) provides a multidisciplinary passage for researchers, managers, professionals, practitioners and students around the globe to publish high quality, peer-reviewed articles on all theoretical and empirical aspects of Engineering and Science.
The peer-reviewed International Journal of Engineering Inventions (IJEI) is started with a mission to encourage contribution to research in Science and Technology. Encourage and motivate researchers in challenging areas of Sciences and Technology.
Safety is the primary and most important reason for monitoring the deformations of engineering structures. It could also help in improving our knowledge of the mechanical behaviour of engineering structures. Engineering structures are subject to deformation due to factors such as changes of ground water level, traffic load changes, tidal and tectonic phenomena. The Ikpoba River Bridge in Benin City whose traffic load has increased was monitored using GPS technology. The bridge was investigated as a result of carrying more load than usual due to the expansion of the road and dredging activities that had taken place in the river in 2008. One reference station and six monitoring points were involved in the monitoring of the bridge. The regularity of the survey was thirty days, and six observation epochs were used. Each monitoring point was occupied for about thirty minutes during the observation. The observation data were processed with compass software. The processed coordinates were adjusted with least squares adjustment technique. The standard deviation of unit weight for the weighted observations (σo) was computed for each observation epoch and was less than 1cm. The observation epochs were compared consecutively by finding the difference between successive observation results. The maximum differences in coordinates of the successive epochs were all less than 1mm. It was seen from the results that the bridge
was stable and did not undergo any displacement/movement within the period of study. It is recommended that the results of the six monitored points on the bridge should be further analyzed using other appropriate model of adjustment technique.
Comparing canopy density measurement from UAV and hemispherical photography: ...IJECEIAES
UAV and hemispherical photography are common methods used in canopy density measurement. These two methods have opposite viewing angles where hemispherical photography measures canopy density upwardly, while UAV captures images downwardly. This study aims to analyze and compare both methods to be used as the input data for canopy density estimation when linked with a lower spatial resolution of remote sensing data i.e. Landsat image. We correlated the field data of canopy density with vegetation indices (NDVI, MSAVI, and AFRI) from Landsat-8. The canopy density values measured from UAV and hemispherical photography displayed a strong relationship with 0.706 coefficient of correlation. Further results showed that both measurements can be used in canopy density estimation using satellite imagery based on their high correlations with Landsat-based vegetation indices. The highest correlation from downward and upward measurement appeared when linked with NDVI with a correlation of 0.962 and 0.652, respectively. Downward measurement using UAV exhibited a higher relationship compared to hemispherical photography. The strong correlation between UAV data and Landsat data is because both are captured from the vertical direction, and 30 m pixel of Landsat is a downscaled image of the aerial photograph. Moreover, field data collection can be easily conducted by deploying drone to cover inaccessible sample plots.
A Novel Approach for Ship Recognition using Shape and Texture ijait
Maritime security includes reliable identification of ship entering and leaving a nation’s territorial waters. Sea target detection from remote sensing imagery is very important, with a wide array of applications in areas such as fishery management, vessel traffic services, and naval warfare. Automated systems that could identify a ship could complement existing electronic signal identification methods. A new classification approach using shape and texture is introduced for Ship detection. Texture information can improve classification performance. This approach uses both shape and texture features. Feature extraction is done by Hu’s moment invariants with several classification algorithms. This paper presents an overview of
automatic ship recognition methods with a view towards embedded implementation on optical smart cameras. Therefore this approach may attain a good classification rate.
THEOS (Thailand Earth Observation System)
THEOS is an Earth observation mission of Thailand, under development at EADS Astrium SAS, Toulouse, France. In July 2004, EADS Astrium SAS signed a contract for delivery of THEOS with GISTDA (Geo-Informatics and Space Technology Development Agency) of Bangkok, Thailand. GISTDA is Thailand's leading national organization (i.e., space agency) in the field of space activities and applications. The Thai Ministry of Science and Technology is funding the program.
The THEOS cooperative agreement includes the production and launch of one optical imaging satellite, as well as the development of the ground segment necessary to operate and control the satellite directly from Thailand. The contract also specifies on-the-job training of Thai engineers as part of the EADS Astrium development team. Also as part of the THEOS program, GISTDA earned the right to receive data from the SPOT-2, 4 and 5 spacecraft of CNES in Thailand, which have many features similar to those of THEOS. The prime objective of THEOS is to provide Thailand with an affordable access to space (i.e., a state-of-the-art Earth observation satellite for the near future), and to spawn through this program's operational experience the country's own capability and infrastructure an indigenous potential for the development of future space missions.
The science objectives call for the provision of:
1) Panchromatic (2 m) and multispectral (15 m) imagery from THEOS observations, and
2) The generation of geo-referenced image products and image processing capabilities for applications in the fields of cartography, land use, agricultural monitoring, forestry management, coastal zone monitoring and flood risk management.
The Thai government has also expressed its intention to offer THEOS data to the disaster mitigation efforts under the International Charter.
Water-Body Area Extraction From High Resolution Satellite Images-An Introduct...CSCJournals
Water resources play an important role in region planning, natural disaster, industrial and agricultural production and so on. Surveying of water-bodies and delineate its features properly is very first step for any planning, especially for places like India, where the land-cover is dominated by water-bodies. Recording images, such as from satellite, sometimes does not reflect the distinguished characteristics of water with non-water features, e.g. shadows of super structures. Image of water body is confused easily with the shadow of skyscraper, since calm water surface induces mirror reflection when it gives birth to echo wave. Over the past decade, a significant amount of research been conducted to extract the water body information from multi-resolution satellite image. The objective of this paper is to review methodologies applied for water body extraction using satellite remote sensing. First, studies on water body detection are treated. Methodological issues related to the use of these methods were summarized. Results from empirical studies, applying water-body extraction techniques are collected and discussed. Important issues for future research are also identified and discussed.
Structure failure often occurs in the structure of wall. This failure can adversely affect the comfort level of the structure. Knowing the behavior of structure resulting from the load is important, as it can help to predict the strength of the structure and comfort of the structure being worked on. One way to find out and predict the strength and comfort of the structure as a result of the load received is experimental test and simulation. The simulation VecTor2 used to predict the shear force, crack, and displacement of reinforced concrete wall when applied the load. This simulation considered the effect of bond stress-slip effect of behavior reinforced concrete. Bonds stress-slip gives a great influence on the strength and hysteretic response of the reinforced concrete wall. That is why this study considers the influence of bond stress-slip on reinforced concrete wall. All the result of simulation VecTor2 using bond stress-slip effect would be compared with the result of the experimental test to see the accuracy of the simulation test.
The concept of sustainable construction is increasingly affecting the development of the construction market.The specificity of construction as an economic activity and ofthe construction product (goods and services) determine the existence of a complex vertical chain of links, involving different actors, who tend to work in the short term and are limited to the rational use of knowledge and experience in practice. Moreover, it is characterized by a low level of inter-company relationshipsresulting in a fragmentation of responsibilityand complicates and hinders the realization of projects and sites,which meet the requirements of sustainable construction. Sustainable construction requires a holistic approach and substantial changes in the organization of construction activity, both at the market and firm level, under the active role of the state. The aim of the study is: 1) analysis of problems in the vertical chain of connections in the construction market, 2)an analysis of the possibilities for creating stable long-term relationships and a joint approach of clients, contractors and subcontractors, which can provide economic, social and environmental efficiency of the construction.
Industrial engineering is founded on the idea that there is always a better way. This mantra rings true in everything an industrial engineer does, from lean manufacturing to six sigma, to quality control and ergonomics. This paper demonstrates the uniqueness of this discipline, the impact its techniques has in sectors outside of manufacturing, and the positive effects it has on businesses.
Multilevel Inverters are getting popular and have become more attractive to researchers in the recent times for high power applications due to their better power quality and higher efficiency as compared to two level inverters. This research work presents a detailed comparative analysis of various multicarrier sinusoidal PWM schemes such as In Phase Disposition, Phase Opposition Disposition and Alternate Phase Opposite Disposition implemented on five level conventional and modified cascaded h-bridge inverters in MATLAB/SIMULINK software. Conventional five level topology uses eight switches and suffers from increased switching complexity while modified five level topology uses only five switches and is recommended to reduce switching complexity and switching losses. It also ensures less number of components, reduced size and overall cost of the system. The effect of modulation index (Ma) on the output harmonic contents in various PWM techniques is also analyzed.
Objective: Cervical cancer (CC) is one of the leading causes of cancer-related deaths among women worldwide.Human papillomavirus (HPV) is the most important element in this disease.The aim of this study is to prepare TiO2/ZnO nanocomposite (NC), titanium dioxide (TiO2) and zinc oxide (ZnO)nanoparticles (NPs) to determine the anticancer activity on human CC cell line (HeLa) and healthy mouse fibroblast cell line (L-929). Materials&Methods: ZnO, TiO2 NPs and NC were prepared by a solution combustion synthesis method. The samples were characterized by ultraviolet–visible spectroscopy. Stability analysis was performed with zeta potential. The synthesized NC and NPs were permormed to the HeLa and L-929 cell lines and anticancer activity of these NC and NPs were determined by using MTT method. The HeLa and L-929 cells were treated with different concentrations of these NC and NPs (0,5-100 μg/ml) for 24, 48 and 72 hours. The spectrophotometric readings at 570 nm were recorded and analysed with Graphpad Prism7. Results: NC and NPs were successfully synthesized. The effects of these NC and NPs on the HeLa and L-929 cells were compared with the control group and IC50 values were determined for 24, 48 and 72 hours. Then we compared the effects of these molecules on the L-929 cell line with the HeLa cell line and founded more active is on HeLa cells. Conclusion:There are many drugs used in CC treatment. However, undesirable toxicity and drug resistance of these drugs negatively affect treatment.We have synthesized NC and NPs in order to formulate basis of a new drug in this study and have identified anti-cancer activity.As a result, we found that NC and NPs anti-cancer activity was higher in HeLa cells than in L-929.
Graphene is a material that attracts attention in technical textile applications as in many other areas due to its outstanding features. In this study, it was aimed to investigate the performance properties of graphene coated fabrics. Pre-treated polyester fabrics were coated with nano-graphene powders at different concentration rates (50, 100 and 200 g/kg) by knife-over-roll technique. According to test results, generally, the graphene coating had a positive effect on the performance properties of polyester fabrics.
This study was focused on the effects of Sugarcane Bagasse Ash (SCBA) additive on process parameters and compost quality of Co-composting of filter cake and bagasse. Filter cake and bagasse were mixed and sugar cane bagasse ash (SCBA) from a heating power plant of sugar mill. Three compost mixes (M) were obtained: MA with 0%, MB with 10% and MC with 20 wt % of fuel ash. These three different mixes were composted in an experimental composter as three parallel experiments for 3 weeks each. The physical, chemical and biological parameters were monitoring during composting. Significantly, ash additives decreased the total organic carbon; measured by mineralization the breaking down of the organic matter was more rapid in the MC than in the MA, as well as increased the pH during composting. Interesting, the pH decreased was most important in MA and attend 5 for the first week of composting, and then it gradually increased to pH around 8 at the end of the process. The results indicated that ash inhibits the pH drop due to production of organic acids during composting. The acidity of the material was reported as affects the process during the initial phase of rising temperature and quality of the final product. The temperature reached up to 50-55oC during thermophilic phase, the greater temperature was obtained for MC. At the end of composting, the electrical conductivity increased in the MC, especially in MC, but don’t exceed limit (4 mS/cm) for prevent phytotoxicity of the compost. The SCBA additive was likely to speed up the composting process of bagasse with filter cake from 44 days to 33 days.
The work presents report on production and analysis of bioresin from epoxidized mango kernel oil (EMKO). The bioresin (acrylated epoxidized mango kernel oil) or AEMKO was produced from epoxidized mango kernel oil via acrylation chemical reaction route. The FTIR spectrum analysis of epoxidized mango kernel oil (EMKO) and acrylated epoxidized mango kernel oil (AEMKO) produced gave the degree of acrylation (DOA) as 46%. The Viscosity of AEMKO (resin) was determined at room temperature (25 °C) to be 387cP while the density at 25oC was 1.2 g/cm3. The glass transition temperature (Tg) of the bioresin was determined to be 95oC. Production cost analysis of the bioresin was done and found to be N8, 804.35 per litre. The high cost was due to high costs of the chemicals, labour and overhead charges involved at my local level. At commercial level, those components of the costs would definitely reduce to the level compatible with synthetic (polyester) resin (N2, 500 per litre) currently sold by some markers in Nigeria. However, the overall results of the work demonstrated that bioresin can be successfully synthesized from mango kernel oil with properties compatible with ASTM standards. The commercial production of the bioresin will go a long way in mitigating some of the challenges associated with total use of fossil fuel currently use for production of bulk of synthetic resins for composite manufacturing activities.
The window functions used for digital filter design are used to eliminate oscillations in
the FIR (Finite Impulse Response) filter design. In this work, the use of Particle Swarm Optimization
(PSO) algorithm is proposed in the design of cosh window function, in which has widely used in the
literature and has useful spectral parameters. The cosh window is a window function derived from the
Kaiser window. It is more advantageous than the Kaiser window because there is no power series
expansion in the time domain representation. The designed window function shows better ripple ratio
characteristics than other window functions commonly used in the literature. The results obtained
were presented in tables and figures and successful results were obtained
The aim of the study was to investigate the relationship between 2D gray scale pixels and 3D gray scale pixels of image reconstructions in computed tomography (CT). The 3D space image reconstruction from data projection was a challenging and difficult research problem. The image was normally reconstructed from the 2D data from CT data projection. In this descriptive study, a synthetics 3D Shepp-Logan phantom was used to simulate the actual data projection from a CT scanner. Real-time data projection of a human abdomen was also included in this study. Additionally, the Graphical User Interface (GUI) for the application was designed using Matlab Graphical User Interface Development Environment (GUIDE). The application was able to reconstruct 2D and 3D images in their respective spaces successfully.The image reconstruction for CT in 3D space was analyzedalong with 2D space in order to show their relationships and shared properties for the purpose of constructing these images.
In this work the antimicrobial activity and the economic viability analysis of the essential oil extracted from the hybrid formed by the seeds species of the Murupi (Capsicum chinense), Criollos de Morellos (Capsicum annuum) and Finger of the young (Capsicum baccatum ). The essential oil of the pepper was obtained by the steam drag process and for this extraction, the Soxhlet method was used. For the determination of the antimicrobial activity of the oil the disc diffusion method was used for the strains of Bacillus cereus, Staphylococcus aureus and Escherichia coli. The results point out the resistance of the tested strains to the essential oil of the respective pepper and, in terms of financial and economic aspects, this was not feasible on a small scale. It is suggested that other microorganisms be tested and, later, that studies be carried out with the purpose of characterizing the studied oil chemically for proper application in the agroindustry.
Eliminating Gibbs phenomenon, which occurs during design of Finite Impulse Response (FIR) digital filter and which is undesirable, is very important in order to provide expected performance from digital filter. Window functions have been developed to eliminate these oscillations and to improve the performance of the filter in this regard. In this work, an application was developed for designing window function using LABVIEW which is a graphical programming environment produced by National Instruments. LABVIEW offers a powerful programming environment away from complexity. In this work, the performances of cosh and exponential window functions, which are designed by using the possibilities of LABVIEW in programming, are examined and the situations that will occur under various conditions are compared.
Better efficiency of the air transport system of a country at the national level, especially in terms of its
capacity to generate value for passenger flow and cargo transport, effectively depends on the identification of
the demand generation potential of each hub for this type of service. This requires the mapping of the passenger
flow and volume of cargo transport of each region served by the system and the number of connections. The
main goal of this study was to identify important factors that account for the great variability (demand) of
regional hubsof the airport modal system in operation in the State of São Paulo, the most populated and
industrialized in the Southeast region in Brazil. For this purpose, datasets for each airport related to passengers
or cargo flow were obtained from time series data in the period ranging from January 01, 2008 to December
31, 2014. Different data analysis approaches could imply in better mapping of the flow of the air modal system
from the evaluation of some factors related to operations/volume. Therefore, different statistical models - such
as multiple linear regression with normal errors and new stochastic volatility (SV) models - are introduced in
this study, to provide a better view of the operation system in the four main regional hubs, within a large group
of 32 airports reported in the dataset.
Linear attenuation coefficient (휇) is a measure of the ability of a medium to diffuse and absorb radiation. In the interaction of radiation with matter, the linear absorption coefficient plays an important role because during the passage of radiation through a medium, its absorption depends on the wavelength of the radiation and the thickness and nature of the medium. Experiments to determine linear absorption coefficient for Lead, Copper and Aluminum were carried out in air. The result showed that linear absorption Coefficient for Lead is 0.545cm – 1, Copper is 0.139cm-1 and Aluminum is 0.271cm-1 using gamma-rays. The results agree with standard values.
This study presents results of Activity Concentrations, Absorbed dose rate and the Annual Effective dose rates of naturally occurring radionuclides (40K, 232Th and 226Ra) absorbed in 8 soil samples collected from different areas within the Ajiwei mining sites in Niger State, North Central Nigeria. A laboratory γ-ray spectrometry NaI (Tl) at the Centre for Energy Research and Training (CERT), Ahmadu Bello University Zaria, was used to carry out the analysis of the soil samples. The values of Activity Concentration for 40K ranged from 421.6174 ± 7.9316 to 768.7403 ± 7.9315; for 226Ra it ranged from 20.6257 ± 2.0858 to 44.0324 ± 5.0985 and for 232Th the ranged is from 23.7172 ± 1.3683 to 62.7137 ± 4.1049 Bq.Kg-1. While the Absorbed Dose for 40K ranged from 17.5814 ± 0.3307 to 32.0565 ± 0.3307 ŋGy.h-1, for 226Ra the range is from 9.5291 ± 0.9636 to 20.3430 ± 2.3555 ŋGy.h-1 and for 232Th range from 14.3252 ± 0.4414 to 37.8791 ± 2.4794 ŋGy.h-1. The total average Absorbed Dose rate of the 8 soil samples collected is 63.7877 ŋGy.h-1 and the estimated Annual Effective Dose for the sampled areas range from 0.0636- 0.1028mSvy-1 (i.e 64 – 103 μSv.y-1), with an average Annual Effective Dose of 0.0782 mSv.y-1 (i.e. 78.2 μSv.y-1). These results show’s that the radiation exposure level reaching members of the public in the study areas is lower than the recommended limit value of 1 mSv.y-1 (UNSCEAR, 2000). Also the mean Radium Equivalents obtained ranged from 107.3259 BqKg-1 (AJ1) to 179.4064 BqKg-1 (AJ4). These results show that the recommended Radium Equivalent Concentration is ≤ 370 BqKg-1 which is the requirement for soil materials to be used for dwellings, this implies that the soil from this site is suitable use for residential buildings. The mean External Hazard Index ( Hext ) ranged from 0.1229 Bqkg-1 (AJ3) to 0.4226 Bqkg-1 (AJ7).. While the maximum allowed value of (Hext = 1) corresponds to the upper limit of Raeq (370 BqKg-1) in order to limit the external gamma radiation dose from the soil materials to 1.5 mGy y-1. That is, this Index should be equal to or less than unity (Hext ≤ = 1). Furthermore, the mean Internal Hazard Index (Hext) ranged from 0.3456 Bqkg-1 (AJ1) to 0.6453 Bqkg-1 (AJ2) .Finally, the mean value of the Excess Alpha Radiation (Iα) ranged from 0.1031 Bq.Kg-1 (AJ1) to 0.2202 Bq.Kg-1 (AJ3. All these values for Iα are below the maximum permissible value of Iα= 1 which corresponds to 200 Bq.Kg-1. It can therefore be said that no radiological hazard is envisaged to dwellers of the study areas and the miners working on those sites area.
Pick and place task is one among the most important tasks in industrial field handled by “Selective
Compliance Assembly Robot Arm” (SCARA). Repeatability with high-speed movement in horizontal plane is
remarkable feature of this type of manipulator. The challenge of design SCARA is the difficulty of achieving
stability of high-speed movement with long length of links. Shorter links arm can move more stable. This
condition made the links should be considered restrict then followed by restriction of operation area
(workspace). In this research, authors demonstrated on expanding SCARA robot’s workspace in horizontal area
via linear sliding actuator that embedded to base link of the robot arm. With one additional prismatic joint the
previous robot manipulator with 3 degree of freedom (3-DOF), 2 revolute joints and 1 prismatic joint is become
4-DOF PRRP manipulator. This designation increased workspace of robot from 0.5698m2 performed by the
previous arm (without linear actuator) to 1.1281m2 by the propose arm (with linear actuator). The increasing
rate was about 97.97% of workspace with the same links length. The result of experimentation also indicated
that the operation time spent to reach object position was also reduced.
The paper contains several technical solutions of air and moisture permeability in textile
layers and theirs combinations. It is useful collection of the author’s knowledge from several last years.
Discussed are also various marketing declarations of miraculous characteristics of individual used materials.
Examples show not only own technical solution, but also the good description of ongoing processes, using the
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Physical and chemical properties of host environment to concrete structures have serious impact on
the performance and durability of constructed concrete facilities. This paper presents a 7-month study that
simulated the influence of soil contamination due to organic abattoir waste and indiscriminate disposal of spent
hydrocarbon on strength and durability of embedded concrete. Concrete mix, 1:1.5:3 was designed for all cube
and beam specimens with water-cement ratio of 0.5 and the compressive and flexural strengths of the specimen
were measured from age 28 days up to 196 days in the host environment. It was found that both host
environments attack the physical and strength of concrete in compression and flexure. However, hydrocarbon
had much greater adverse effect on the load-carrying capacity of concrete structures and hence make
constructed facilities less serviceable and vulnerable to premature failure.
Visualization of cartographic systems in mobile devices is a challenge due to the its own
limitations to show all the relevant information that the user needs on the screen. Within this paper we review
current state-of- the-art technological solutions to face this problem and we classify them in a novel typology. In
addition, it is shown an example case of a developed system for a logistic company specialized in dangerous
goods. The system is able to calculate optimal routes and communicate the drivers the best path in order to
achieve a great management of the company resources
The generation of digital content has undergone a great increase in recent years due to the
development of new technologies that allow the creation of content quickly and easily. A further step in this
evolution is the generation of contents by automatic systems without human intervention. Thus, for decadesit has
been developing models for the Natural Language Generation (NLG) that allow the transformation of content to
the form of narratives. At present, there are several systems that enable the generation in text format. In this
paper we present the Narrative system, which allows the generation of text narratives from different sources,
and which are indistinguishable for user from those made by a human being.
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Study on the LandCover Classification using UAV Imagery
1. International Journal of Modern Research in Engineering and Technology (IJMRET)
www.ijmret.org Volume 3 Issue 11 ǁ November 2018.
w w w . i j m r e t . o r g I S S N : 2 4 5 6 - 5 6 2 8 Page 15
Study on the LandCover Classification using UAV Imagery
Kang JoonGu1
, Kim JongTae2
*, Yeo HongKoo1
1
(Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building
Technology, Republic of Korea)
2
(Nature & Technology Inc., Republic of Korea)
ABSTRACT : The study was carried out using the UAV for analyzing the characteristics of debris in order to
present the methodology to estimate the quantitative amount of debris caught in small river facilities. A total of
six small rivers that maintained the form of a natural river were selected for collecting UAV images, and the
grouping of each target in the image was carried out using the object-based classification method, and based on
the object-based classification result of the UAV images, the land cover classification for the status of factors
causing the generation of debris for six target sections was carried out by applying the screen digitizing method.
In addition, in order to verify the accuracy of the classification result, the error matrix was performed, securing
the reliability of the result. The accuracy analysis result showed that for all six target sections, the overall
accuracy was 93.95% and the Kappa coefficient was 0.93, showing an excellent result.
KEYWORDS : Debris, land cover classification, river,screen digitizing method,UAV imagery
I. INTRODUCTION
A low-resolution satellite image can be
obtained repeatedly on a short cycle, but for a
space with a relatively small area such as a small
river, such an image has low spatial resolution so
that it is not suitable for monitoring purposes. On
the other hand, a high-resolution satellite image
enables periodic monitoring, but due to the
limitations imposed by costs and time periods, it is
not suitable for monitoring a small river. In
addition, a satellite image using a manned aircraft
can be applicable in the right place, but it is too
costly.
As a measure to solve and supplement this type
of problem, monitoring using UAV (unmanned
aerial vehicle) is emphasized as an excellent
countermeasure, and studies regarding remote
sensing of a river using a drone are being carried
out actively both at home and abroad among
various application fields [1-4].
Especially, the technology using the UAV has
features that enables regular monitoring to be
carried out in the case of a disaster and
environmental elements (grass, tree, etc.) that may
become debris can be classified in a narrow basin
such as small river basin. In addition, the remote
sensing method using a hyperspectral image
whereby a unique wavelength range can be
detected has also been launched [5-6] and studies
regarding the investigation and analysis of tidal
current using a drone are also being carried out [7-
8].
However, river monitoring and field application
cases remain at the level of basic research, and
almost no analysis of causes for debris in a small
river using a drone has been carried out.
Therefore, image collection was carried out for
six river basins using the UAV and proper object
classification for each image was carried out by
adjusting the scale, shape and compactness. Based
on the object-based classification result of the UAV
images, the land cover classification for the status
of factors causing the generation of debris was
carried out by applying the screen digitizing
method.
II. RESEARCH METHOD
2.1 Characteristics of UAV
The UAV used for carrying out the analysis of
causes and characteristics for the occurrence of
debris using the land cover classification was DJI
’ s Inspire 1.0 that featured 22 m/s for the
maximum speed, 18 minutes for the flying time and
2 km for the flying distance and it was equipped
with the Sony EXMOR 1/2.3 image sensor. Table 1
shows the characteristics of UAV.
2. w w w . i j m r e t . o r g I S S N : 2 4 5 6 - 5 6 2 8 Page 16
International Journal of Modern Research in Engineering and Technology (IJMRET)
www.ijmret.org Volume 3 Issue 11 ǁ November 2018.
Table 1.Characteristics of Dji Inspire 1
Weight 2.935kg
Maximum flying
speed
22m/s
Flying time 18min
Operating
temperature
- 10 ∼ 40℃
Flying distance 2000m
Image sensor Sony EXMOR 1/2.3, Pixels 12.4M
Image size 4000 x 3000
Video format
UHD: 4096x2160p 24/25,
3840x2160p 24/25/30
FHD: 1920x1080p
24/25/30/48/50/60
HD: 1280x720p 24/25/30/48/50/60
2.2 Image collection plan and method
The image collection using the UAV was
carried out in a similar fashion with the aerial
image production procedure. The image collection
procedures were carried out in the order of prior
planning, data collection, calibration of sensor,
setting of filming path, image correction and image
matching. A total of six areas targeting small rivers
that maintain the form of a natural river were
selected as the target areas of study. The field
survey targeting the selected six areas
(Bonggokcheon(1), Bonggokcheon(2),
Pyeongchoncheon, Seogokcheon, Amgolcheon,
Deoksancheon) was carried out, and the study was
conducted using the land cover classification in
order to analyze elements that may become debris
affecting facilities in small rivers.
At first, the grouping of each target in the
image was carried out using the object-based
classification method, and the land cover
classification was carried out for the status of
factors causing the generation of debris on the
target sections using the screen digitizing method.
Moreover, in order to verify the accuracy of the
classification result, the error matrix was
performed, securing the reliability of the result.
III. CONTENTS OF STUDY
3.1 Classification of images using
the object-based classification method
Six rivers were classified into four
sections using the UAV images and the object
classification suitable for each image was
undertaken by adjusting the scale, shape and
compactness. Fig. 1 shows the UAV images for the
six basins, and Fig. 2 shows the object-based
classification result of the representative sections
among the six basins.
(a) Bonggokcheon(1)
(b) Bonggokcheon(2)
(c) Pyeongchoncheon
(d) Seogokcheon
(e) Amgolcheon
3. w w w . i j m r e t . o r g I S S N : 2 4 5 6 - 5 6 2 8 Page 17
International Journal of Modern Research in Engineering and Technology (IJMRET)
www.ijmret.org Volume 3 Issue 11 ǁ November 2018.
(f) Deoksancheon
Figure.1 UAV images for six basins
(a) Bonggokcheon(1)-1
(b) Bonggokcheon(2)-1
(c) Pyeongchoncheon-1
(d) Seogokcheon-1
(e) Amgolcheon-1
(f) Deoksancheon-1
Figure.2 Object-based classification of UAV
images for six basins
3.2 Status of factors causing the
generation of debris in target basins
Based on the object-based classification result
of the UAV images, the land cover classification
for the status of factors causing the generation of
debris for six target sections was carried out by
applying the screen digitizing method (Fig. 3). The
land cover classification result of Bonggokcheon(1)
showed 85% for grass and 11% for waters and, the
ratio of debris was in the order of structure, gravel,
sand and others. The land cover classification result
of Bonggokcheon(2) showed 73% for grass and
19% for waters, and the ratio of debris was in the
order of structure, gravel, sand and others. The land
cover classification result of Pyeongchoncheon
showed 61% for grass and 24% for waters, and the
ratio of debris was in the order of structure, sand,
gravel and others.
The land cover classification result of
Seogokcheon showed 48% for waters, 19% for
sand and 12% for structure, and the ratio of debris
was in the order of grass, gravel and others. The
land cover classification result of Amgolcheon
showed 49% for waters, 22% for grass and 21% for
structure, and the ratio of debris was in the order of
tree, sand, gravel and others, and the land cover
classification result of Deoksancheon showed 39%
for waters, 26% for grass and 14% for sand, and
the ratio of debris was in the order of structure,
gravel, tree and others (Tables 2 ~7).
(a) Land cover classification map of Bonggokcheon(1)
(b) Land cover classification map of Bonggokcheon(2)
4. w w w . i j m r e t . o r g I S S N : 2 4 5 6 - 5 6 2 8 Page 18
International Journal of Modern Research in Engineering and Technology (IJMRET)
www.ijmret.org Volume 3 Issue 11 ǁ November 2018.
(c) Land cover classification map of Pyeongchoncheon
(d) Land cover classification map of Seogokcheon
(e) Land cover classification map of Amgolcheon
(f) Land cover classification map of Deoksancheon
Figure 3. Land cover classification map of target
areas of study
Table 2. Land cover classification result of
Bonggokcheon(1) using UAVimages
Legend of land cover Area (m2
) Ratio (%)
Tree 0.00 0.00
Grass 3,346.45 85.43
Waters 452.92 11.56
Structure 105.53 2.69
River bed (gravel) 7.24 0.19
River bed (sand) 1.38 0.04
Others 3.54 0.09
Total 3,917.07 100.00
Table 3. Land cover classification result of
Bonggokcheon(2) using UAVimages
Legend of land cover Area (m2
) Ratio (%)
Tree 0.00 0.00
Grass 730,12 73.15
Waters 197.67 19.81
Structure 61.30 6.14
River bed (gravel) 4.85 0.49
River bed (sand) 2.73 0.27
Others 1.43 0.14
Total 998.09 100.00
Table 4. Land cover classification result of
Pyeongchoncheon using UAVimages
Legend of land cover Area (m2
) Ratio (%)
Tree 0.00 0.00
Grass 471.87 61.82
Waters 187.22 24.53
Structure 88.15 11.55
River bed (gravel) 7.64 1.00
River bed (sand) 8.08 1.06
Others 0.36 0.04
Total 763.32 100.00
5. w w w . i j m r e t . o r g I S S N : 2 4 5 6 - 5 6 2 8 Page 19
International Journal of Modern Research in Engineering and Technology (IJMRET)
www.ijmret.org Volume 3 Issue 11 ǁ November 2018.
Table 5. Land cover classification result of
Seogokcheon using UAVimages
Legend of land cover Area (m2
) Ratio (%)
Tree 0.00 0.00
Grass 106.49 10.65
Waters 482.68 48.26
Structure 129.75 12.97
River bed (gravel) 63.65 6.36
River bed (sand) 190.31 19.03
Others 27.30 2.73
Total 1,000.18 100.00
Table 6. Land cover classification result of
Amgolcheon using UAVimages
Legend of land cover Area (m2
) Ratio (%)
Tree 45.66 3.06
Grass 329.31 22.11
Waters 734.97 49.35
Structure 319.40 21.45
River bed (gravel) 19.07 1.28
River bed (sand) 39.73 2.67
Others 1.18 0.08
Total 1,489.32 100.00
Table 7. Land cover classification result of
Deoksancheon using UAVimages
Legend of land cover Area (m2
) Ratio (%)
Tree 31.35 1.69
Grass 485.35 26.13
Waters 736.67 39.67
Structure 184.63 9.94
River bed (gravel) 142.89 7.70
River bed (sand) 270.2 14.55
Others 5.89 0.32
Total 1,856.98 100.00
3.3Verification of accuracy of land
cover classification result
For the land cover map prepared using an
image, the accuracy of the classification result
according to the intended purpose should be
verified in order to obtain an objective value. The
accuracy was verified by comparing the image
classification result and the field investigation data
according to the object-based and screen digitizing
method, and the overall accuracy, producer ’ s
accuracy and user’s accuracy were calculated and
the accuracy was evaluated with Kappa coefficient
through the normalization process. In order to
obtain reference data, 60 positions for each section
were selected randomly through the expert’s field
investigation and the visual reading result and the
verification was carried out. The overall accuracy
is obtained by dividing the number of pixels
classified accurately by the number of pixels for
the whole test area, and the accuracy is displayed
only using the accurately classified result, so a
highly approximate result is provided. For the
supplementation, the Kappa coefficient was
calculated additionally, and the Kappa coefficient
calculates the accuracy by considering the
accurately classified result as well as classification
errors, so it becomes the standard to display greater
objective accuracy than the overall accuracy. Table
8 shows the score card for the Kappa coefficient.
Table 8. Kappa coefficient
Kappa Quality Kappa Quality
<0 Worst 0.4~0.6 Good
0~0.2 Poor 0.6~0.8 Very good
0.2~0.4 Reasonable 0.8< Excellent
The accuracy analysis result for the target areas
showed that in the case of Bonggokcheon(1), the
overall accuracy (OA) was 98.33% and the Kappa
coefficient was 0.98 (Excellent) as the accuracy
analysis result, showing an excellent result. In the
case of Bonggokcheon(2), the overall accuracy
(OA) was 90% and the Kappa coefficient was 0.88
(Excellent) as the accuracy analysis result, showing
an excellent result. In the case of
Pyeongchoncheon, the overall accuracy (OA) was
93.33% and the Kappa coefficient was 0.92
(Excellent) as the accuracy analysis result, showing
an excellent result. In the case of Seogokcheon, the
6. w w w . i j m r e t . o r g I S S N : 2 4 5 6 - 5 6 2 8 Page 20
International Journal of Modern Research in Engineering and Technology (IJMRET)
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overall accuracy (OA) was 95% and the Kappa
coefficient was 0.94 (Excellent) as the accuracy
analysis result, showing an excellent result.
In the case of Amgolcheon, the overall accuracy
(OA) was 91.43% and the Kappa coefficient was
0.90 (Excellent) as the accuracy analysis result,
showing an excellent result. In the case of
Deoksancheon, the overall accuracy (OA) was
95.71% and the Kappa coefficient was 0.95
(Excellent) as the accuracy analysis result, showing
an excellent result (Tables 9 ~14). For all six target
sections, the overall accuracy was 93.95% and the
Kappa coefficient was 0.93 (Excellent), showing an
excellent result (Table 15).
Table 9. Accuracy analysis of Bonggokcheon(1)
(Error matrix)
Landcover
classificationdata
Referencedata(fieldinvestigationandvisualreading)
Riverbed
(gravel)
River
bed
(sand)
Others Facility Grass Tree Waters Total
User’s
accuracy
(%)
Landcover
classification
Riverbed
(gravel)
10 - - - - - - 10 100.0
Riverbed
(sand)
- 10 - - - - - 10 100.0
Others - - 9 1 - - - 10 90.0
Facility - - - 10 - - - 10 100.0
Grass - - - - 10 - - 10 100.0
Tree - - - - - - - - -
Waters - - - - - - 10 10 100.0
Total 10 10 9 11 10 - 10 60 -
User’s
accuracy
(%)
100.0 100.0 100.0 90.9 100.0 - 100.0 - -
Overallaccuracy(%) 98.33
Kappacoefficient 0.98(Excellent)
Table 10. Accuracy analysis of Bonggokcheon(2)
(Error matrix)
Landcover
classificationdata
Referencedata(fieldinvestigationandvisualreading)
Riverbed
(gravel)
River
bed
(sand)
Others Facility Grass Tree Waters Total
User’s
accuracy
(%)
Landcover
classification
Riverbed
(gravel)
10 - - - - - - 10 100.0
Riverbed
(sand)
- 6 - - 4 - - 10 60.0
Others - - 8 - 2 - - 10 80.0
Facility Facility - - 10 - - - 10 100.0
Grass - - - - 10 - - 10 100.0
Tree - - - - - - - - -
Waters - - - - - - 10 10 100.0
Total 10 6 8 10 16 - 10 60 -
User’s
accuracy
(%)
100.0 100.0 100.0 100.0 62.5 - 100.0 - -
Overallaccuracy(%) 90.00
Kappacoefficient 0.88(Excellent)
Table 11. Accuracy analysis of
Pyeongchoncheon (Error matrix)
Landcover
classificationdata
Referencedata(fieldinvestigationandvisualreading)
Riverbed
(gravel)
River
bed
(sand)
Others Facility Grass Tree Waters Total
User’s
accuracy
(%)
Landcover
classification
Riverbed
(gravel)
10 - - - - - - 10 100.0
Riverbed
(sand)
- 8 - - 2 - - 10 80.0
Others - - 8 1 1 - - 10 80.0
Facility - - - 10 - - - 10 100.0
Grass - - - - 10 - - 10 100.0
Tree - - - - - - - - -
Waters - - - - - - 10 10 100.0
Total 10 8 8 11 13 - 10 60 -
User’s
accuracy
(%)
100.0 100.0 100.0 90.9 76.9 - 100.0 - -
Overallaccuracy(%) 93.33
Kappacoefficient 0.92(Excellent)
Table 12. Accuracy analysis of Seogokcheon
(Error matrix)
Landcover
classificationdata
Referencedata(fieldinvestigationandvisualreading)
Riverbed
(gravel)
River
bed
(sand)
Others Facility Grass Tree Waters Total
User’s
accuracy
(%)
Landcover
classification
Riverbed
(gravel)
7 1 - 1 1 - - 10 70.0
Riverbed
(sand)
- 10 - - - - - 10 100.0
Others - - 10 - - - - 10 100.0
Facility - - - 10 - - - 10 100.0
Grass - - - - 10 - - 10 100.0
Tree - - - - - - - - -
Waters - - - - - - 10 10 100.0
Total 7 11 10 11 11 - 10 60 -
User’s
accuracy
(%)
100.0 90.9 100.0 90.9 90.9 - 100.0 - -
Overallaccuracy(%) 95.00
Kappacoefficient 0.94(Excellent)
Table 13. Accuracy analysis of Amgolcheon
(Error matrix)
Landcover
classificationdata
Referencedata(fieldinvestigationandvisualreading)
River
bed
(gravel)
River
bed
(sand)
Others Facility Grass Tree Waters Total
User’s
accuracy
(%)
Landcover
classification
Riverbed
(gravel)
9 1 - - - - - 10 90.0
Riverbed
(sand)
1 8 - - 1 - - 10 80.0
Others 1 - 8 - 1 - - 10 80.0
Facility - - - 10 - - - 10 100.0
Grass - 1 - - 9 - - 10 90.0
Tree - - - - - 10 - 10 100.0
Waters - - - - - - 10 10 100.0
Total 11 10 8 10 11 10 10 70 -
User’s
accuracy
(%)
81.8 80.0 100.0 100.0 81.8 100.0 100.0 - -
Overallaccuracy(%) 91.43
Kappacoefficient 0.90(Excellent)
Table 14. Accuracy analysis of Deoksancheon
7. w w w . i j m r e t . o r g I S S N : 2 4 5 6 - 5 6 2 8 Page 21
International Journal of Modern Research in Engineering and Technology (IJMRET)
www.ijmret.org Volume 3 Issue 11 ǁ November 2018.
(Error matrix)
Landcover
classificationdata
Referencedata(fieldinvestigationandvisualreading)
River
bed
(gravel)
River
bed
(sand)
Others Facility Grass Tree Waters Total
User’s
accuracy
(%)
Landcover
classification
Riverbed
(gravel)
9 1 - - - - - 10 90.0
Riverbed
(sand)
- 10 - - - - - 10 100.0
Others - - 9 - 1 - - 10 90.0
Facility - - - 10 - - - 10 100.0
Grass - - - 1 9 - - 10 90.0
Tree - - - - - 10 - 10 100.0
Waters - - - - - - 10 10 100.0
Total 9 11 9 11 10 10 10 70 -
User’s
accuracy
(%)
100.0 90.9 100.0 90.9 90.0 100.0 100.0 - -
Overallaccuracy(%) 95.71
Kappacoefficient 0.95(Excellent)
Table 15. Accuracy analysis of all target areas
(Error matrix)
Landcover
classificationdata
Referencedata(fieldinvestigationandvisualreading)
River
bed
(gravel)
River
bed
(sand)
Others Facility Grass Tree Waters Total
User’s
accuracy
(%)
Landcover
classification
Riverbed
(gravel)
55 3 - 1 1 - - 60 91.7
Riverbed
(sand)
1 52 - - 7 - - 60 86.7
Others 1 - 52 2 5 - - 60 86.7
Facility - - - 60 - - - 60 100.0
Grass - 1 - 1 58 - - 60 96.7
Tree - - - - - 20 - 20 100.0
Waters - - - - - - 60 60 100.0
Total 57 56 52 64 71 20 60 380 -
User’s
accuracy
(%)
96.5 92.9 100.0 93.8 81.7 100.0 100.0 - -
Overallaccuracy(%) 93.95
Kappacoefficient 0.93(Excellent)
IV. CONCLUSION
The study was carried out using the UAV for
analyzing the characteristics of debris in order to
present the methodologyto estimate the quantitative
amount of debris caught in small river facilities. At
first, the control line for compensating the scale of
UAV image was installed, and the images were
taken from various directions in order to calculate
the accumulated amount of debris. A total of six
small rivers that maintained the form of a natural
river were selected for collecting UAV images, and
the grouping of each target in the image was
carried out using the object-based classification
method, and the land cover classification was
carried out for the status of factors causing the
generation of debris on the target sections using the
screen digitizing method. In addition, in order to
verify the accuracy of the classification result, the
error matrix was performed, securing the reliability
of the result. The accuracy analysis result showed
that for all six target sections, the overall accuracy
was 93.95% and the Kappa coefficient was 0.93
(Excellent), showing an excellent result.
V. Acknowledgements
This research was supported by a
grant(16AWMP-B121100-01) from the Water
Management Research Program funded by
Ministry of Land, Infrastructure and Transport of
Korean government.
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International Journal of Modern Research in Engineering and Technology (IJMRET)
www.ijmret.org Volume 3 Issue 11 ǁ November 2018.
Author Profile:
1. Kang JoonGu, Research Fellow, Department of Land, Water and Environment Research, Korea
Institute of Civil Engineering and Building Technology, Republic of Korea
2. Kim Jong Tae, Research Director, Nature & Technology Inc., Republic of Korea
3. Yeo HongKoo, Research Fellow, Department of Land, Water and Environment Research, Korea
Institute of Civil Engineering and Building Technology, Republic of Korea
Corresponding author:
Dr. Kim, Jong-Tae, email: jtkim@hi-nnt.com; Tel: (+82) 54 655 1816