Pub Date : 2009-06-11DOI: 10.1109/RAST.2009.5158286
I. Can Dikmen, A. Arisoy, H. Temeltas
This study includes altitude stabilization, hovering control any desired position and attitude control of quadrotor. Classically PD controller derived and applied to this system. Inverse dynamic control, feedback linearization control and sliding mode control methods have used to derive as nonlinear controllers. Linear and nonlinear control techniques applied to attitude control of this vehicle. Derived control methods have been performed using computer simulations and compared the results according to this study objective.
{"title":"Attitude control of a quadrotor","authors":"I. Can Dikmen, A. Arisoy, H. Temeltas","doi":"10.1109/RAST.2009.5158286","DOIUrl":"https://doi.org/10.1109/RAST.2009.5158286","url":null,"abstract":"This study includes altitude stabilization, hovering control any desired position and attitude control of quadrotor. Classically PD controller derived and applied to this system. Inverse dynamic control, feedback linearization control and sliding mode control methods have used to derive as nonlinear controllers. Linear and nonlinear control techniques applied to attitude control of this vehicle. Derived control methods have been performed using computer simulations and compared the results according to this study objective.","PeriodicalId":412236,"journal":{"name":"2009 4th International Conference on Recent Advances in Space Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132514582","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 : 2009-06-11DOI: 10.1109/RAST.2009.5158202
I. Akar, Kaan Kalkan, D. Maktav, Yasemin Ozdemir
The various human activities are one of the main affecting factors on natural disasters. Human effects not suitable for land use potential can cause both physical and moral damages. Yeniçiftlik stream basin, located within the boundaries of Beykoz, a suburb of Istanbul in Turkey, has been selected as the study area. It covers an area of 3.66 km2 of the Yeniçiftlik River within the boundaries of the Beykoz district. Nowadays, there are many methods for flood researches. Not only new satellite technologies but also improvements of GIS provide important advantages in the researches of natural disasters. In this study, the effects of land use features on flood occurrence have been determined by using GIS and remote sensing. Pixel-based classification method has been used for analyzing land use features. IKONOS pan-sharpened satellite imagery has been used for current land use. Processes of flood analyze were performed by means of HEC-GeoRAS (ArcGIS 9.3) and HEC-RAS 4.0 (Hydrologic Engineering Centers River Analysis System) hydraulic software. In this study, geometric data composes the basis of the model. These data are rivers, river coasts, stream ways, cross sections and land use. The geometric data of the study area are produced with HEC-GeoRAS and all other data were gathered here before they were transferred to the HEC-RAS. After the input of the geometric data stream, data related to the basin where the modeling will be done were input. Hydraulic and hydrologic modeling for the flood risk studies, flood flow rates of 10, 50 and 100 years were calculated using maximum flood flow rates of 30 years, and flood risk maps were obtained making hydraulic modeling according to the data obtained.
{"title":"Determination of land use effects on flood risk by using integration of GIS and remote sensing","authors":"I. Akar, Kaan Kalkan, D. Maktav, Yasemin Ozdemir","doi":"10.1109/RAST.2009.5158202","DOIUrl":"https://doi.org/10.1109/RAST.2009.5158202","url":null,"abstract":"The various human activities are one of the main affecting factors on natural disasters. Human effects not suitable for land use potential can cause both physical and moral damages. Yeniçiftlik stream basin, located within the boundaries of Beykoz, a suburb of Istanbul in Turkey, has been selected as the study area. It covers an area of 3.66 km2 of the Yeniçiftlik River within the boundaries of the Beykoz district. Nowadays, there are many methods for flood researches. Not only new satellite technologies but also improvements of GIS provide important advantages in the researches of natural disasters. In this study, the effects of land use features on flood occurrence have been determined by using GIS and remote sensing. Pixel-based classification method has been used for analyzing land use features. IKONOS pan-sharpened satellite imagery has been used for current land use. Processes of flood analyze were performed by means of HEC-GeoRAS (ArcGIS 9.3) and HEC-RAS 4.0 (Hydrologic Engineering Centers River Analysis System) hydraulic software. In this study, geometric data composes the basis of the model. These data are rivers, river coasts, stream ways, cross sections and land use. The geometric data of the study area are produced with HEC-GeoRAS and all other data were gathered here before they were transferred to the HEC-RAS. After the input of the geometric data stream, data related to the basin where the modeling will be done were input. Hydraulic and hydrologic modeling for the flood risk studies, flood flow rates of 10, 50 and 100 years were calculated using maximum flood flow rates of 30 years, and flood risk maps were obtained making hydraulic modeling according to the data obtained.","PeriodicalId":412236,"journal":{"name":"2009 4th International Conference on Recent Advances in Space Technologies","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126842014","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 : 2009-06-11DOI: 10.1109/RAST.2009.5158222
Yasin Karatas, F. Ince
Of the three or four major areas of use of satellites, Earth observation is probably the most attractive one for non-space-faring countries, in their aspirations to step into the space age. The expressed purpose to make use of space technologies for the benefit of the country covers both acquiring regional terrain data needed for development, and starting to build the infrastructure for further space efforts. Although building of remote sensing spacecraft may require a lower level of technology and a lower cost than communication or navigation satellites, the technical barriers and economic feasibility have still been too high for most developing countries to start a program of building observation satellites. Thus remote sensing still has been largely the realm of a few countries which have also dominated the commercial market for Earth imagery.
{"title":"The place of small satellites in fulfilling the Earth observation requirements of a developing country","authors":"Yasin Karatas, F. Ince","doi":"10.1109/RAST.2009.5158222","DOIUrl":"https://doi.org/10.1109/RAST.2009.5158222","url":null,"abstract":"Of the three or four major areas of use of satellites, Earth observation is probably the most attractive one for non-space-faring countries, in their aspirations to step into the space age. The expressed purpose to make use of space technologies for the benefit of the country covers both acquiring regional terrain data needed for development, and starting to build the infrastructure for further space efforts. Although building of remote sensing spacecraft may require a lower level of technology and a lower cost than communication or navigation satellites, the technical barriers and economic feasibility have still been too high for most developing countries to start a program of building observation satellites. Thus remote sensing still has been largely the realm of a few countries which have also dominated the commercial market for Earth imagery.","PeriodicalId":412236,"journal":{"name":"2009 4th International Conference on Recent Advances in Space Technologies","volume":"38 15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114073869","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 : 2009-06-11DOI: 10.1109/RAST.2009.5158251
P. Garner, D. Cooke, A. Haslehurst
This paper describes the development of a highly capable Payload Downlink Chain (PDC) for use on the Surrey Satellite Technology Limited 300kg (SSTL-300) platform which has been designed to support small, low cost science and Earth Observation (EO) satellite missions operating in Low Earth Orbit (LEO). The driver behind the development of the PDC was the NigeriaSAT-2 [1] mission commissioned in 2006 by the Nigerian National Space Research and Development Agency (NASDRA), which is due for launch in 2009. NigeriaSAT-2 is a high performance EO mission designed for a seven-and-a-half year lifetime to achieve 2.5m imagery in a panchromatic waveband along with 5m and 32m imagery in four multi-spectral channels. The spacecraft will deliver high data throughput on an agile platform, whilst still maintaining high levels of pointing accuracy. All of this will be included in a 300Kg satellite. The key requirements for the mission were to maximize the data capacity, whilst maintaining a very modest total system cost and minimizing the technical risks throughout the development phase. The majority of the spacecraft constituent parts, including the structure, the optical instruments and the PDC have all been developed by Surrey Satellite Technology Limited (SSTL) to satisfy the mission, so that the cost and schedule can be carefully controlled and be reliably repeated for future missions. Early design focused on making the system suitable for commercial operations, and consequently it was necessary to develop ways of maximizing the downlink data throughput without significantly affecting the mission cost. As a result of these requirements, an understanding of the necessary capability of the PDC was derived and then the requirement specification for each element of the PDC could be generated.
{"title":"Development of a scalable Payload Downlink Chain for highly agile earth observation missions in Low Earth Orbit","authors":"P. Garner, D. Cooke, A. Haslehurst","doi":"10.1109/RAST.2009.5158251","DOIUrl":"https://doi.org/10.1109/RAST.2009.5158251","url":null,"abstract":"This paper describes the development of a highly capable Payload Downlink Chain (PDC) for use on the Surrey Satellite Technology Limited 300kg (SSTL-300) platform which has been designed to support small, low cost science and Earth Observation (EO) satellite missions operating in Low Earth Orbit (LEO). The driver behind the development of the PDC was the NigeriaSAT-2 [1] mission commissioned in 2006 by the Nigerian National Space Research and Development Agency (NASDRA), which is due for launch in 2009. NigeriaSAT-2 is a high performance EO mission designed for a seven-and-a-half year lifetime to achieve 2.5m imagery in a panchromatic waveband along with 5m and 32m imagery in four multi-spectral channels. The spacecraft will deliver high data throughput on an agile platform, whilst still maintaining high levels of pointing accuracy. All of this will be included in a 300Kg satellite. The key requirements for the mission were to maximize the data capacity, whilst maintaining a very modest total system cost and minimizing the technical risks throughout the development phase. The majority of the spacecraft constituent parts, including the structure, the optical instruments and the PDC have all been developed by Surrey Satellite Technology Limited (SSTL) to satisfy the mission, so that the cost and schedule can be carefully controlled and be reliably repeated for future missions. Early design focused on making the system suitable for commercial operations, and consequently it was necessary to develop ways of maximizing the downlink data throughput without significantly affecting the mission cost. As a result of these requirements, an understanding of the necessary capability of the PDC was derived and then the requirement specification for each element of the PDC could be generated.","PeriodicalId":412236,"journal":{"name":"2009 4th International Conference on Recent Advances in Space Technologies","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133453424","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 : 2009-06-11DOI: 10.1109/RAST.2009.5158277
R. Qahwaji, T. Colak
The Halloween storm, which occurred late October early November 2003, caused serious problems including damaging 28 satellites, knocking two out of commission, diverting airplane routes and causing power failures. In this paper, we tested our fully Automated Solar Activity Prediction (ASAP) tool with the solar data corresponding to this period. The prediction capability of the tool is evaluated using various performance measures. With this study we are aiming to answer if solar flares during Halloween storm could have been predicted using ASAP and if ASAP can be used for the prediction of such extreme events in the future.
{"title":"Prediction of halloween storm with automated solar activity prediction tool (ASAP)","authors":"R. Qahwaji, T. Colak","doi":"10.1109/RAST.2009.5158277","DOIUrl":"https://doi.org/10.1109/RAST.2009.5158277","url":null,"abstract":"The Halloween storm, which occurred late October early November 2003, caused serious problems including damaging 28 satellites, knocking two out of commission, diverting airplane routes and causing power failures. In this paper, we tested our fully Automated Solar Activity Prediction (ASAP) tool with the solar data corresponding to this period. The prediction capability of the tool is evaluated using various performance measures. With this study we are aiming to answer if solar flares during Halloween storm could have been predicted using ASAP and if ASAP can be used for the prediction of such extreme events in the future.","PeriodicalId":412236,"journal":{"name":"2009 4th International Conference on Recent Advances in Space Technologies","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134000073","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 : 2009-06-11DOI: 10.1109/RAST.2009.5158252
N. Katayama, K. Baba, T. Yoshimura, M. Yamashita
We propose the use insects for space foods. Since space agriculture will farm many different plant species, some of species require to be pollinated by the help of insects, which have been co-evolved with entomophilous flowering plants. Among major plant species defined for space agriculture, soybean is essential for providing proteins for our diet,. Soybean is an entomophilous species together with other farming plants. We also consider planting forest to harvest excess oxygen and wooden materials for interior of space cabin. Inedible leaves of wooden plants, such as mulberry can feed insect larvae. Converting inedible biomass including excretory waste to edible substance is another proposal for space agriculture. Based on these consideration, we have assessed silkworm pupa, fly and bee larva, locust, termite for their use in space diet. From nutritional view point to design space diet, menu shall be in a good balance of nutritional factors, such as the energy requirement, the composition between carbohydrates and lipids, protein intake and amino acids composition, minerals and vitamins. Taking meal is not just to fill nutritional requirements, but should be delicious for providing the joy of life. Cultural background of foods is quite important at making space diet acceptable for international space crew. Insect eating is a good subject for either space foods, and terrestrial problem of foods crisis that we may face in near future. Development of space agriculture might be a good test bed for the sustainable foods web at limited resource even on the mother planet, Earth.
{"title":"Insects for space agriculture and sustainable foods web on Earth","authors":"N. Katayama, K. Baba, T. Yoshimura, M. Yamashita","doi":"10.1109/RAST.2009.5158252","DOIUrl":"https://doi.org/10.1109/RAST.2009.5158252","url":null,"abstract":"We propose the use insects for space foods. Since space agriculture will farm many different plant species, some of species require to be pollinated by the help of insects, which have been co-evolved with entomophilous flowering plants. Among major plant species defined for space agriculture, soybean is essential for providing proteins for our diet,. Soybean is an entomophilous species together with other farming plants. We also consider planting forest to harvest excess oxygen and wooden materials for interior of space cabin. Inedible leaves of wooden plants, such as mulberry can feed insect larvae. Converting inedible biomass including excretory waste to edible substance is another proposal for space agriculture. Based on these consideration, we have assessed silkworm pupa, fly and bee larva, locust, termite for their use in space diet. From nutritional view point to design space diet, menu shall be in a good balance of nutritional factors, such as the energy requirement, the composition between carbohydrates and lipids, protein intake and amino acids composition, minerals and vitamins. Taking meal is not just to fill nutritional requirements, but should be delicious for providing the joy of life. Cultural background of foods is quite important at making space diet acceptable for international space crew. Insect eating is a good subject for either space foods, and terrestrial problem of foods crisis that we may face in near future. Development of space agriculture might be a good test bed for the sustainable foods web at limited resource even on the mother planet, Earth.","PeriodicalId":412236,"journal":{"name":"2009 4th International Conference on Recent Advances in Space Technologies","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133867378","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 : 2009-06-11DOI: 10.1109/RAST.2009.5158299
Teodor-Viorel Chelaru, M. Stoia‐Djeska, M. Cernat, E. Popa, Valentin Butoiescu
The paper purpose is to dignify some aspects regarding the calculus model and technical solutions for surveillance system based on self-supporting gyroplane used to local observations and scientific equipment carrying. The calculus methodology consists in numerical simulation of different gyroplane evolution. The gyroplane model which will be presented has six DOF and autonomous control system. The analyzed results will be the flight parameters and performances. The discussions will be focused around the technical possibility to realize this innovative gyroplane using air jet control for the movement around the center of mass, including the compensation for the torque of the rotor
{"title":"Mathematical model and technical solution for surveillance system based on self-supporting gyroplane","authors":"Teodor-Viorel Chelaru, M. Stoia‐Djeska, M. Cernat, E. Popa, Valentin Butoiescu","doi":"10.1109/RAST.2009.5158299","DOIUrl":"https://doi.org/10.1109/RAST.2009.5158299","url":null,"abstract":"The paper purpose is to dignify some aspects regarding the calculus model and technical solutions for surveillance system based on self-supporting gyroplane used to local observations and scientific equipment carrying. The calculus methodology consists in numerical simulation of different gyroplane evolution. The gyroplane model which will be presented has six DOF and autonomous control system. The analyzed results will be the flight parameters and performances. The discussions will be focused around the technical possibility to realize this innovative gyroplane using air jet control for the movement around the center of mass, including the compensation for the torque of the rotor","PeriodicalId":412236,"journal":{"name":"2009 4th International Conference on Recent Advances in Space Technologies","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115327386","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 : 2009-06-11DOI: 10.1109/RAST.2009.5158276
K. Tomita-Yokotani, S. Anilir, N. Katayama, H. Hashimoto, M. Yamashita
Space agriculture regenerates food, oxygen and water from metabolic waste. Since materials recycle is driven by limited resources available on extraterrestrial bodies, it can be an extreme model of terrestrial agriculture facing the growth limit at yet increasing population. Choice of food materials to meet nutritional requirements and foods cultural acceptability for space agriculture is the basis of its design. From Asian background, we selected rice, soybean, sweet potato, and green-yellow vegetables. In order to supplement fatty acids and certain vitamins, animal origin foods are required in diet. Among many candidate animals to breed, insects are of great interest since they have a number of advantages over mammals. We propose several insect species, such as the silkworm (Bombyx mori), the drugstore beetle (Stegobium paniceum), and the termite, (Macrotermes subhyalinus). These insects do not compete with crop production, but convert inedible biomass or waste into an edible form. Tri-culture of rice, water fern (Azolla), and loach fish (Misgurnus anguillicaudatus) in rice paddies is another proposal for space, and sustainable agriculture on Earth. In addition, we discuss symbiosis and biological interaction, allelopathy.
{"title":"Space agriculture for habitation on mars and sustainable civilization on earth","authors":"K. Tomita-Yokotani, S. Anilir, N. Katayama, H. Hashimoto, M. Yamashita","doi":"10.1109/RAST.2009.5158276","DOIUrl":"https://doi.org/10.1109/RAST.2009.5158276","url":null,"abstract":"Space agriculture regenerates food, oxygen and water from metabolic waste. Since materials recycle is driven by limited resources available on extraterrestrial bodies, it can be an extreme model of terrestrial agriculture facing the growth limit at yet increasing population. Choice of food materials to meet nutritional requirements and foods cultural acceptability for space agriculture is the basis of its design. From Asian background, we selected rice, soybean, sweet potato, and green-yellow vegetables. In order to supplement fatty acids and certain vitamins, animal origin foods are required in diet. Among many candidate animals to breed, insects are of great interest since they have a number of advantages over mammals. We propose several insect species, such as the silkworm (Bombyx mori), the drugstore beetle (Stegobium paniceum), and the termite, (Macrotermes subhyalinus). These insects do not compete with crop production, but convert inedible biomass or waste into an edible form. Tri-culture of rice, water fern (Azolla), and loach fish (Misgurnus anguillicaudatus) in rice paddies is another proposal for space, and sustainable agriculture on Earth. In addition, we discuss symbiosis and biological interaction, allelopathy.","PeriodicalId":412236,"journal":{"name":"2009 4th International Conference on Recent Advances in Space Technologies","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114653001","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 : 2009-06-11DOI: 10.1109/RAST.2009.5158300
H. Kayal
To support the European space situational awareness program a nano satellite constellation consisting of two satellites has been studied in the frame of a team design project. The very first study results shows that such a system can be a valuable contribution to the SSA program using a optical sensor system in orbit at a very low cost compared to larger satellites. The main advantage of such a system is independence from weather conditions and a large field of view, which promises a larger number of detections in shorter time compared to large aperture sized telescopes.
{"title":"A nano satellite constellation for detection of objects in earth orbit","authors":"H. Kayal","doi":"10.1109/RAST.2009.5158300","DOIUrl":"https://doi.org/10.1109/RAST.2009.5158300","url":null,"abstract":"To support the European space situational awareness program a nano satellite constellation consisting of two satellites has been studied in the frame of a team design project. The very first study results shows that such a system can be a valuable contribution to the SSA program using a optical sensor system in orbit at a very low cost compared to larger satellites. The main advantage of such a system is independence from weather conditions and a large field of view, which promises a larger number of detections in shorter time compared to large aperture sized telescopes.","PeriodicalId":412236,"journal":{"name":"2009 4th International Conference on Recent Advances in Space Technologies","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115810277","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 : 2009-06-11DOI: 10.1109/RAST.2009.5158228
O. Aytekin, ilkay Ulusoy, Esra Zeynep Abacioglu, Erhan Gokcay
Information retrieval from high resolution remotely sensed images is a challenging issue due to the inherent complexity and the curse of dimensionality of data under study. This paper presents an approach for building detection in high resolution remotely sensed images incorporating structural information of spatial data into spectral information. The proposed approach moves along eliminating irrelevant areas in a hierarchical manner. As a first step, pan-sharpened image is obtained from multi-spectral and panchromatic bands of Quickbird image. Vegetation and shadow regions are masked out by using Normalized Difference Vegetation Index (NDVI) and ratio of hue to intensity in YIQ model, respectively. Then, panchromatic band is filtered by mean shift filtering for smoothing structures while preserving the discontinuities near boundaries. Next, differential morphological profile (DMP) is calculated for each pixel and a relative measure of structure size is recorded as the first maximum value of DMP which generates a labeled image representing connected components according to sizes of structures. However, there appear some connected components which are irrelevant to buildings in shape. To eliminate those connected components, their skeletons are obtained via thinning to get a relative length measure along with measuring areas of connected components. These measures are compared to a threshold individually, which provides a cue for a candidate building structure.
{"title":"Building detection in high resolution remotely sensed images based on morphological operators","authors":"O. Aytekin, ilkay Ulusoy, Esra Zeynep Abacioglu, Erhan Gokcay","doi":"10.1109/RAST.2009.5158228","DOIUrl":"https://doi.org/10.1109/RAST.2009.5158228","url":null,"abstract":"Information retrieval from high resolution remotely sensed images is a challenging issue due to the inherent complexity and the curse of dimensionality of data under study. This paper presents an approach for building detection in high resolution remotely sensed images incorporating structural information of spatial data into spectral information. The proposed approach moves along eliminating irrelevant areas in a hierarchical manner. As a first step, pan-sharpened image is obtained from multi-spectral and panchromatic bands of Quickbird image. Vegetation and shadow regions are masked out by using Normalized Difference Vegetation Index (NDVI) and ratio of hue to intensity in YIQ model, respectively. Then, panchromatic band is filtered by mean shift filtering for smoothing structures while preserving the discontinuities near boundaries. Next, differential morphological profile (DMP) is calculated for each pixel and a relative measure of structure size is recorded as the first maximum value of DMP which generates a labeled image representing connected components according to sizes of structures. However, there appear some connected components which are irrelevant to buildings in shape. To eliminate those connected components, their skeletons are obtained via thinning to get a relative length measure along with measuring areas of connected components. These measures are compared to a threshold individually, which provides a cue for a candidate building structure.","PeriodicalId":412236,"journal":{"name":"2009 4th International Conference on Recent Advances in Space Technologies","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116204968","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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