Pub Date : 2014-05-14DOI: 10.1109/ECTICON.2014.6839863
P. Aree, Somboon Lhaksup
Self-excited induction generators (SEIG) are mostly exploited in isolated areas to generate electrical energy. Analyzing of a stand-alone SEIG dynamic performance is largely limited application of the SEIG to static load. This paper presents dynamic simulation of small SEIG feeding induction motor (IM) load. Mathematical models of SEIG, IM, and wind turbine are clearly implemented into Matlab/Simulink environment. The study results reveal that a great dip in SEIG voltage occurs when the IM load is suddenly connected to the SEIG since the excitation capacitor cannot provide sufficient reactive power support. By applying an additional paralleled-motor capacitor, the SEIG voltage dip can be alleviated and a faster acceleration of the IM load can be obtained.
{"title":"Dynamic simulation of self-excited induction generator feeding motor load using Matlab/Simulink","authors":"P. Aree, Somboon Lhaksup","doi":"10.1109/ECTICON.2014.6839863","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839863","url":null,"abstract":"Self-excited induction generators (SEIG) are mostly exploited in isolated areas to generate electrical energy. Analyzing of a stand-alone SEIG dynamic performance is largely limited application of the SEIG to static load. This paper presents dynamic simulation of small SEIG feeding induction motor (IM) load. Mathematical models of SEIG, IM, and wind turbine are clearly implemented into Matlab/Simulink environment. The study results reveal that a great dip in SEIG voltage occurs when the IM load is suddenly connected to the SEIG since the excitation capacitor cannot provide sufficient reactive power support. By applying an additional paralleled-motor capacitor, the SEIG voltage dip can be alleviated and a faster acceleration of the IM load can be obtained.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125894388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-14DOI: 10.1109/ECTICON.2014.6839896
W. Sarikha, P. Krachodnok, R. Wongsan
This paper presents the study of new technique for exciting the 4×4 rectangular microstrip patches antenna (MSA) array by using a single patch, which is surrounded with metallic plate. The objective of this research is to explore the new technique for exciting any microstrip array instead of the conventional phasing line that have energy loss and narrow bandwidth occurred inside it. From many literatures, we found that the single patch of rectangular MSA can directly excite to them and reradiated to the free-space. However, if this patch is surrounded by metallic plate on the same layer, its gain can be increased more than using only single patch excited it. The exciting patch with surrounded metallic plate has been designed by using general PCB, which has the dielectric constant, equals to 2.2. While the 4×4 MSA array is designed by using FR4-PCB with dielectric constant equals to 4.4. The substrate thicknesses of both types of PCB are 1.6 mm. From the simulated results by using the licensed Computer Simulation Technology (CST) software, we found that the gain of antenna can be raised up from 11.68 dB (without metallic surrounded plate) to 13.42 dB at 10 GHz operating frequency. However, the required radiation patterns of MSA array antenna can be adjusted by using the general theoretical technique.
{"title":"Exciting technique for MSA array by using single patch with surrounded metallic plate","authors":"W. Sarikha, P. Krachodnok, R. Wongsan","doi":"10.1109/ECTICON.2014.6839896","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839896","url":null,"abstract":"This paper presents the study of new technique for exciting the 4×4 rectangular microstrip patches antenna (MSA) array by using a single patch, which is surrounded with metallic plate. The objective of this research is to explore the new technique for exciting any microstrip array instead of the conventional phasing line that have energy loss and narrow bandwidth occurred inside it. From many literatures, we found that the single patch of rectangular MSA can directly excite to them and reradiated to the free-space. However, if this patch is surrounded by metallic plate on the same layer, its gain can be increased more than using only single patch excited it. The exciting patch with surrounded metallic plate has been designed by using general PCB, which has the dielectric constant, equals to 2.2. While the 4×4 MSA array is designed by using FR4-PCB with dielectric constant equals to 4.4. The substrate thicknesses of both types of PCB are 1.6 mm. From the simulated results by using the licensed Computer Simulation Technology (CST) software, we found that the gain of antenna can be raised up from 11.68 dB (without metallic surrounded plate) to 13.42 dB at 10 GHz operating frequency. However, the required radiation patterns of MSA array antenna can be adjusted by using the general theoretical technique.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127205181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-14DOI: 10.1109/ECTICON.2014.6839727
T. Seesaard, Sasiprapa Seaon, C. Khunarak, P. Lorwongtragool, T. Kerdcharoen
Thread-based gas sensor based on poly (styrenecomaleic acid) partial isobutyl/methyl mixed ester and multi-walled carbon nanotube (PSE/MWCNT) nanocomposite for NH3 detection has been designed and created from two simple processes; crochet and immersion (dip) coating processes. This new dimension of fabric-based gas sensors fabrication is suitable for integrating directly into the flexible substrates to be applied as wearable gas detection instruments such as gas-protective clothing, gas safety shoes and gas masks. Soft materials which do not irritate the wearer have been used for this sensor. This work opens a new perspective that overcomes the well-known limitation for creating a fabric-based gas sensor such as the complexity of the production process, high cost and high power consumption in operating. Thus it leads to an innovative integration between science and smart art. As a result, we can make a cheap wireless gas detector based on Xbee communication technology, with low power consumption. This sensor was tested for its selectivity and sensitivity performance toward several volatile compounds, namely ammonia, pyridine, acetic acid, ethanol and acetone. The results revealed that this sensor has higher sensitivity and specificity to NH3 than other gases. It is possible to monitor NH3 until it reaches a concentration of 5 ppm and also has the ability to recover as well.
{"title":"A novel creation of thread-based ammonia gas sensors for wearable wireless security system","authors":"T. Seesaard, Sasiprapa Seaon, C. Khunarak, P. Lorwongtragool, T. Kerdcharoen","doi":"10.1109/ECTICON.2014.6839727","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839727","url":null,"abstract":"Thread-based gas sensor based on poly (styrenecomaleic acid) partial isobutyl/methyl mixed ester and multi-walled carbon nanotube (PSE/MWCNT) nanocomposite for NH3 detection has been designed and created from two simple processes; crochet and immersion (dip) coating processes. This new dimension of fabric-based gas sensors fabrication is suitable for integrating directly into the flexible substrates to be applied as wearable gas detection instruments such as gas-protective clothing, gas safety shoes and gas masks. Soft materials which do not irritate the wearer have been used for this sensor. This work opens a new perspective that overcomes the well-known limitation for creating a fabric-based gas sensor such as the complexity of the production process, high cost and high power consumption in operating. Thus it leads to an innovative integration between science and smart art. As a result, we can make a cheap wireless gas detector based on Xbee communication technology, with low power consumption. This sensor was tested for its selectivity and sensitivity performance toward several volatile compounds, namely ammonia, pyridine, acetic acid, ethanol and acetone. The results revealed that this sensor has higher sensitivity and specificity to NH3 than other gases. It is possible to monitor NH3 until it reaches a concentration of 5 ppm and also has the ability to recover as well.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122701791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-14DOI: 10.1109/ECTICON.2014.6839726
Pongchira Kaewkaosai, K. Hongesombut, C. Mitsantisuk
This article proposes a robust controller design of hydro-thermal power system considering of the thermal power plant area connected to the hydro power plant area. The automation generation control of an interconnected hydro-thermal power system with a small Energy Capacitor System (ECS) augmented to both area has been investigated. The controller is used in order to control the frequency robustly and to improve the power system stability due to the uncertainties in load change and energy capacitors in the system. The power from the load changes are introduced into the system and treated it as the uncertainty during the design process. The H-infinity loop-shaping design procedure (H-infinity LSDP) is adopted as the control design procedure in this study. The results reveal that H-infinity LSDP can achieve higher performance and more robustness compared with PID controller.
{"title":"Robust hydro-thermal power system controller considering Energy Capacitor System","authors":"Pongchira Kaewkaosai, K. Hongesombut, C. Mitsantisuk","doi":"10.1109/ECTICON.2014.6839726","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839726","url":null,"abstract":"This article proposes a robust controller design of hydro-thermal power system considering of the thermal power plant area connected to the hydro power plant area. The automation generation control of an interconnected hydro-thermal power system with a small Energy Capacitor System (ECS) augmented to both area has been investigated. The controller is used in order to control the frequency robustly and to improve the power system stability due to the uncertainties in load change and energy capacitors in the system. The power from the load changes are introduced into the system and treated it as the uncertainty during the design process. The H-infinity loop-shaping design procedure (H-infinity LSDP) is adopted as the control design procedure in this study. The results reveal that H-infinity LSDP can achieve higher performance and more robustness compared with PID controller.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122591510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-14DOI: 10.1109/ECTICON.2014.6839847
A. Chaichana, M. Kumngern, W. Jaikla
An analog second order current-mode filter is described in this paper. The proposed filter uses only a single active building block, namely current following cascaded transconductance amplifier with two grounded capacitors which is attractive for monolithic chip implementation. The circuit has four inputs and single output currents. Five standard functions, namely low-pass, high-pass, band-pass, band-reject and all-pass functions, are given. The natural pole frequency and quality factor can be tuned electronically via the input bias current. The inverting-type input current signal is not required for realization of all-pass function. High output impedance is achieved which is convenient to cascade in current-mode circuit. The PSPICE simulation results are depicted. The given results agree well with the theoretical anticipation.
{"title":"Electronically tunable versatile current-mode MISO universal filter including minimum component count circuits","authors":"A. Chaichana, M. Kumngern, W. Jaikla","doi":"10.1109/ECTICON.2014.6839847","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839847","url":null,"abstract":"An analog second order current-mode filter is described in this paper. The proposed filter uses only a single active building block, namely current following cascaded transconductance amplifier with two grounded capacitors which is attractive for monolithic chip implementation. The circuit has four inputs and single output currents. Five standard functions, namely low-pass, high-pass, band-pass, band-reject and all-pass functions, are given. The natural pole frequency and quality factor can be tuned electronically via the input bias current. The inverting-type input current signal is not required for realization of all-pass function. High output impedance is achieved which is convenient to cascade in current-mode circuit. The PSPICE simulation results are depicted. The given results agree well with the theoretical anticipation.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126445669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-14DOI: 10.1109/ECTICON.2014.6839842
Nikorn Hen-Ngam, J. Mahattanakul
In this paper, a new expression for oscillating amplitude of CMOS LC differential oscillator is derived. Contrary to the conventional expression which was derived by assuming that the current from sourced coupled pair flowing though LC tank is a square wave, the proposed expression is derived by assuming that such current is a clipped sinusoidal, which is more in line with the real situation. By comparing to the simulation results, it was found that the new expression of oscillating amplitude is more accurate than the widely used conventional expression.
{"title":"A new expression for oscillating amplitude of CMOS LC differential oscillator","authors":"Nikorn Hen-Ngam, J. Mahattanakul","doi":"10.1109/ECTICON.2014.6839842","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839842","url":null,"abstract":"In this paper, a new expression for oscillating amplitude of CMOS LC differential oscillator is derived. Contrary to the conventional expression which was derived by assuming that the current from sourced coupled pair flowing though LC tank is a square wave, the proposed expression is derived by assuming that such current is a clipped sinusoidal, which is more in line with the real situation. By comparing to the simulation results, it was found that the new expression of oscillating amplitude is more accurate than the widely used conventional expression.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127752499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-14DOI: 10.1109/ECTICON.2014.6839705
K. Puntsri
This work presents the combining of two methods, which are discrete Fourier transform spread (DFT-spread) and 2×2 space time block codes (STBC), to improve the system performance for polarization division multiplexing (PDM) coherent optical orthogonal frequency division multiplexing (CO-OFDM) communication systems. The system performances are generally measured by the unit of bit error rate (BER). For 64-QAM, the communication length of 850 km can be achieved at the forward error control (FEC) limit.
{"title":"On the 2×2 DFT-spread space-time block code CO-OFDM for PDM optical communications","authors":"K. Puntsri","doi":"10.1109/ECTICON.2014.6839705","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839705","url":null,"abstract":"This work presents the combining of two methods, which are discrete Fourier transform spread (DFT-spread) and 2×2 space time block codes (STBC), to improve the system performance for polarization division multiplexing (PDM) coherent optical orthogonal frequency division multiplexing (CO-OFDM) communication systems. The system performances are generally measured by the unit of bit error rate (BER). For 64-QAM, the communication length of 850 km can be achieved at the forward error control (FEC) limit.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117239024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-14DOI: 10.1109/ECTICON.2014.6839778
Chalermpol Saiprasert, Supawat Supakwong, Wassanun Sangjun, S. Thajchayapong
Drivers error is one of the key factor that contributes to road traffic accidents, often in the form of distracted driving which is when drivers are engaged in a secondary task other than driving. Other than the traditional calling and texting, the multi-capabilities of modern smartphones nowadays enable us to realise a wide range of tasks such as emailing, surfing the net and social networking. However, these activities can be considered road hazards if performed while driving. The main objective of this paper is to conduct a study of the impact of smartphone usage on the driver behaviour on urban road segments using real world data. In total, three activities are deployed for participants to undertake. These are conversing on the phone in handheld and handsfree modes and using instant messaging application. Findings from this study revealed that all of the three activities involving smartphone usage require drivers to compensate their driving in order to maintain the safety level at the “feel safe” zone. The phone activity that involves instant messaging has shown to require the highest attention level from a driver, and consequently the compensation level is at the highest. Taking all aspects into considerations, a figure of merit in terms of the compensation level was proposed, which can be used as an indicator to characterise the driving performance for each distracted phone activities.
{"title":"Effects of smartphone usage on driver safety level performance in urban road conditions","authors":"Chalermpol Saiprasert, Supawat Supakwong, Wassanun Sangjun, S. Thajchayapong","doi":"10.1109/ECTICON.2014.6839778","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839778","url":null,"abstract":"Drivers error is one of the key factor that contributes to road traffic accidents, often in the form of distracted driving which is when drivers are engaged in a secondary task other than driving. Other than the traditional calling and texting, the multi-capabilities of modern smartphones nowadays enable us to realise a wide range of tasks such as emailing, surfing the net and social networking. However, these activities can be considered road hazards if performed while driving. The main objective of this paper is to conduct a study of the impact of smartphone usage on the driver behaviour on urban road segments using real world data. In total, three activities are deployed for participants to undertake. These are conversing on the phone in handheld and handsfree modes and using instant messaging application. Findings from this study revealed that all of the three activities involving smartphone usage require drivers to compensate their driving in order to maintain the safety level at the “feel safe” zone. The phone activity that involves instant messaging has shown to require the highest attention level from a driver, and consequently the compensation level is at the highest. Taking all aspects into considerations, a figure of merit in terms of the compensation level was proposed, which can be used as an indicator to characterise the driving performance for each distracted phone activities.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116209549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-14DOI: 10.1109/ECTICON.2014.6839828
B. Dolwithayakul, Subordin Chooprom, Sunisa Sripuak, Pasita Boonnasa, Boonma Pengchuan
One of the major issues of multiple-campus university is the distance between campuses which makes the collaboration between campuses inefficient. Each time the conference is occur, the most budget are spent on the transportation, time, and paperwork. In this study, we redesign the electronic conference system for multiple-campus universities. We chose our university (Silpakorn University) as a case study. Moreover, we also make a good use of tablet personal computers and laptops with touchscreen input (a.k.a. Ultrabooks) to enhance the conference experience. The new minimal and simple user interface design make a larger number of directors decided to use this system 275% than the previously developed system. They're also satisfy with the simplicity design (Average score 4.50) and enhance the conference efficiency of the director (Average score 4.43). The newly developed system also makes the conference to “paperless conference” and significantly reduces the transportation and paperwork cost on each conference by approximately USD 188.96 or USD 4724.05 per year.
{"title":"The development of electronic conference system for multiple-campus universities","authors":"B. Dolwithayakul, Subordin Chooprom, Sunisa Sripuak, Pasita Boonnasa, Boonma Pengchuan","doi":"10.1109/ECTICON.2014.6839828","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839828","url":null,"abstract":"One of the major issues of multiple-campus university is the distance between campuses which makes the collaboration between campuses inefficient. Each time the conference is occur, the most budget are spent on the transportation, time, and paperwork. In this study, we redesign the electronic conference system for multiple-campus universities. We chose our university (Silpakorn University) as a case study. Moreover, we also make a good use of tablet personal computers and laptops with touchscreen input (a.k.a. Ultrabooks) to enhance the conference experience. The new minimal and simple user interface design make a larger number of directors decided to use this system 275% than the previously developed system. They're also satisfy with the simplicity design (Average score 4.50) and enhance the conference efficiency of the director (Average score 4.43). The newly developed system also makes the conference to “paperless conference” and significantly reduces the transportation and paperwork cost on each conference by approximately USD 188.96 or USD 4724.05 per year.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114812942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-14DOI: 10.1109/ECTICON.2014.6839854
Ponlapak Phuhinkong, T. Kasetkasem, I. Kumazawa, P. Rakwatin, T. Chanwimaluang
In this paper, we proposed an unsupervised algorithm to identify the flooded areas from synthetic aperture radar (SAR) images based on texture information derived from the gray-level co-occurrence matrices (GLCM) texture analysis. Here, five GLCM features, namely, energy, contrast, homogeneity, correlation and entropy, are extracted from a SAR image. These features are input to an image segmentation algorithm using a level set method to identify flooded and dry areas. Experiments were conducted on the RADARSAT-2 images of severely flooded areas near Chaopraya rivers, Thailand, in 2011, for which contemporaneous ground data exists for validation. Our results demonstrate that the proposed algorithm is able to successfully segment various flood regions and achieve improvement over existing published unsupervised algorithms.
{"title":"Unsupervised segmentation of synthetic aperture radar inundation imagery using the level set method","authors":"Ponlapak Phuhinkong, T. Kasetkasem, I. Kumazawa, P. Rakwatin, T. Chanwimaluang","doi":"10.1109/ECTICON.2014.6839854","DOIUrl":"https://doi.org/10.1109/ECTICON.2014.6839854","url":null,"abstract":"In this paper, we proposed an unsupervised algorithm to identify the flooded areas from synthetic aperture radar (SAR) images based on texture information derived from the gray-level co-occurrence matrices (GLCM) texture analysis. Here, five GLCM features, namely, energy, contrast, homogeneity, correlation and entropy, are extracted from a SAR image. These features are input to an image segmentation algorithm using a level set method to identify flooded and dry areas. Experiments were conducted on the RADARSAT-2 images of severely flooded areas near Chaopraya rivers, Thailand, in 2011, for which contemporaneous ground data exists for validation. Our results demonstrate that the proposed algorithm is able to successfully segment various flood regions and achieve improvement over existing published unsupervised algorithms.","PeriodicalId":347166,"journal":{"name":"2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125610339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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