发布求助
文献互助 智能选刊 最新文献

IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)最新文献

筛选
英文 中文
Region-based remote-sensing image compression in the wavelet domain 基于区域的小波域遥感图像压缩
IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.775029
M. Ancis, M. Murroni, D. Giusto, M. Petrou
{"title":"Region-based remote-sensing image compression in the wavelet domain","authors":"M. Ancis, M. Murroni, D. Giusto, M. Petrou","doi":"10.1109/IGARSS.1999.775029","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.775029","url":null,"abstract":"This paper argues that texture regions in remotely sensed images of the Earth are often of no interest to projects for example, concerned with agricultural applications. These regions require a large number of bits to be encoded. It is proposed that they can be identified using a generic algorithm that identifies the boundaries of textured regions irrespective of their class, and removed from the encoding process. The rest of the regions which may be of interest to the specific application, may be encoded using 1D wavelet transform applied to the string of pixels created by raster scanning the region. This approach can help remove the bottleneck of image down-loading from micro-satellites in low Earth orbits, because these satellites can obtain hundreds of images in an orbit but they can only download a few of them during each pass over the tracking station. The proposed approach can be fully implemented for on-board image preprocessing before the down-loading, for cases that urban and forest regions (textured regions) in the images are of no interest.","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"197 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131877768","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}
引用次数: 5
An assessment of ASAR for crop determination in Europe using ERS-2 and Radarsat data 欧洲利用ERS-2和Radarsat数据进行ASAR作物测定的评估
IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.774488
P. Burgess-Allen, P. Bird
{"title":"An assessment of ASAR for crop determination in Europe using ERS-2 and Radarsat data","authors":"P. Burgess-Allen, P. Bird","doi":"10.1109/IGARSS.1999.774488","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.774488","url":null,"abstract":"This paper presents work from the contract 'ASAR and Radarsat Benefits for Crop and Area Determination in Europe (ARCADE)' undertaken by the National Remote Sensing Centre Limited (NRSC). The customer for the project was the Space Department, DERA Farnborough. The objective of this work was to quantify the potential benefits that the dual polarisation and steerable beam of ASAR instrument on board ENVISAT may bring to crop identification. A combination of ERS-2 and Radarsat data covering a site near Great Driffield in North Yorkshire, UK was used. Specifically, the results act as a first assessment of the improvement that ASAR's alternating polarisation capability and variable incidence angle will give over ERS-2. The work is based on seven data acquisition campaigns where ERS-2 and Radarsat data were gathered at seven specific intervals in the season. Ground surveys were timed to coincide with these acquisitions when broad descriptive parameters relating to the local crops and their environment were collected. All satellite data sets were radiometrically and geometrically corrected, and some comments on calibration are presented. Combinations of images were analysed and compared to assess the effects of polarisation and incidence angle on crop discrimination.","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115347426","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}
引用次数: 3
Dependence of the variation coefficient of nautical radar image sequences on the grazing and azimuth angle and consequences for the calibration 航海雷达图像序列的变异系数与掠掠角和方位角的关系及其标定结果
IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.774646
H. Hatten, J. Seemann, F. Ziemer
{"title":"Dependence of the variation coefficient of nautical radar image sequences on the grazing and azimuth angle and consequences for the calibration","authors":"H. Hatten, J. Seemann, F. Ziemer","doi":"10.1109/IGARSS.1999.774646","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.774646","url":null,"abstract":"With the Wave Monitoring System (WaMoS) based on a nautical radar as sensor the significant wave height is determined. For the calibration of the radar image spectra an algorithm with empirically deduced parameters is used. The algorithm is based on the determination of the signal to noise ratio, where the signal belongs to the long wave modulation and the noise is induced by speckle. This method has been developed for synthetic aperture radar at moderate incidence angles and has been extended for use at grazing incidence. The dominant backscatter mechanism depends on the incidence angle which is linked to the grazing angle. It has to be proved if the different backscatter mechanisms have an influence on the calibration of systems working under grazing incidence.","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115508181","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}
引用次数: 1
Optical sensing and image processing to detect a life raft 光学传感和图像处理检测救生筏
IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.773535
K. Yamamoto, K. Yamada, N. Kiriya, H. Matsukura
{"title":"Optical sensing and image processing to detect a life raft","authors":"K. Yamamoto, K. Yamada, N. Kiriya, H. Matsukura","doi":"10.1109/IGARSS.1999.773535","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.773535","url":null,"abstract":"A system for maritime surveillance is presented. The system employs a high resolution IR camera and a color video camera to detect a very small object like a life raft. Several image processing techniques are presented to reduce noise in the data, identify targets and display them in an enhanced manner. Typical images obtained by the flight experiment are shown to demonstrate the validity of a series of procedures including these techniques. An example to enhance the visibility of the display is also presented.","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115672430","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}
引用次数: 7
A study on wind climatology over Gadanki, India using a lower atmospheric wind profiler 用低层大气风廓线仪研究印度Gadanki上空的风气候学
IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.773596
K. K. Reddy, T. Kozu, Y. Ohno, B. Suman, V. K. Anandan, A. Jain, P. Rao
{"title":"A study on wind climatology over Gadanki, India using a lower atmospheric wind profiler","authors":"K. K. Reddy, T. Kozu, Y. Ohno, B. Suman, V. K. Anandan, A. Jain, P. Rao","doi":"10.1109/IGARSS.1999.773596","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.773596","url":null,"abstract":"Over the last three decades, ground-based remote profiling has found increasing applications in atmospheric studies where its high vertical and temporal resolution and extended vertical coverage give clear understanding of atmospheric processes in the troposphere. Due to their capabilities, the development of wind profilers is increasing, and many networks are under study, construction or in operation for research purposes and meteorological prediction. The LAWP (lower atmosphere wind profiler) data can be used for several applications. One such application of LAWP is the observation of long term variation of the wind field, as well as the occurrence of specific events, statistics of waves, turbulence characteristics, etc. In this paper the authors briefly describe the Gadanki LAWP, present examples of wind profiles obtained using 150-metre height resolution and briefly discuss the diurnal variation of winds over the tropical India.","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115715713","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}
引用次数: 1
Ocean oil pollution mapping with ERS synthetic aperture radar imagery 基于ERS合成孔径雷达图像的海洋石油污染制图
IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.773450
Jingxuan Lu, H. Lim, Soo Chin Liew, M. Bao, L. Kwoh
{"title":"Ocean oil pollution mapping with ERS synthetic aperture radar imagery","authors":"Jingxuan Lu, H. Lim, Soo Chin Liew, M. Bao, L. Kwoh","doi":"10.1109/IGARSS.1999.773450","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.773450","url":null,"abstract":"Over six thousand of ERS-1/2 SAR images has been used to map the spatial distribution of ocean oil pollution in the Southeast Asian waters. The relative frequency of oil spills is characterised by a normalised oil spill index representing the average number of oil slicks detected in an ERS scene. Most oil spills are found along the major international shipping routes as well as in those areas with intensive large-scale oil exploitation activities. This work can be taken as the first step of an overall future ocean oil spill monitoring campaigns. Compilation of a global ocean oil pollution map is suggested.","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115756465","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}
引用次数: 30
POLSAR data compensation for terrain azimuth slope variation POLSAR数据补偿地形方位角坡度变化
IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.771535
J. Lee, D. Schuler, T. Ainsworth, W. Boerner
{"title":"POLSAR data compensation for terrain azimuth slope variation","authors":"J. Lee, D. Schuler, T. Ainsworth, W. Boerner","doi":"10.1109/IGARSS.1999.771535","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.771535","url":null,"abstract":"This paper addresses the problem of polarimetric SAR data correction for slope induced radar cross section variations in the azimuth direction. Most radiometric slope corrections remove slope effects in the range direction to account for local incidence angle variation. Two approaches to compensate azimuth slope effects are proposed. In the first approach, the DEM, obtained from interferometric SAR or other means is used to estimate the orientation angle, and in the second approach, the orientation angle is derived from Cloude's and Huynen's decompositions, and the peak-shift in polarization signature. Comparison on the accuracy of estimating the orientation angle with that derived from the DEM is given. NASA/JPL AIRSAR data is used for illustration.","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115911780","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}
引用次数: 6
In-situ measurements of short wave modulation due to bottom topography 海底地形短波调制的原位测量
IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.772052
S. Stolte, S. Stolte
{"title":"In-situ measurements of short wave modulation due to bottom topography","authors":"S. Stolte, S. Stolte","doi":"10.1109/IGARSS.1999.772052","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.772052","url":null,"abstract":"Radar images often show features of bottom topography although radar waves do not penetrate the water. This imaging process is caused by bottom induced current variations which modulate the short waves and hence the radar backscatter intensity. Principally it is possible to deduce a transfer function from radar images to bottom topography. In the frame of the C-STAR project of the European Commission (Coastal Sediment Transport Assessment using SAR imagery) a field experiment had been performed to study the short wave modulation due to bottom topography. A special buoy system drifted across the study area off the Dutch coast measuring waves, wind and bottom profiles. The results clearly show correlations of short wave modulation and water depths.","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114464212","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}
引用次数: 1
Spectral and angular ground-based radar backscatter measurements of Greenland snow facies 格陵兰岛雪相的光谱和角度地基雷达后向散射测量
IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.774530
F. Baumgartner, K. Jezek, R. Forster, S. Gogineni, I. Zabel
{"title":"Spectral and angular ground-based radar backscatter measurements of Greenland snow facies","authors":"F. Baumgartner, K. Jezek, R. Forster, S. Gogineni, I. Zabel","doi":"10.1109/IGARSS.1999.774530","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.774530","url":null,"abstract":"Snow facies, or melt zones, on the Greenland Ice Sheet are correlated with brightness patterns on spaceborne radar imagery. To better relate radar scattering signatures to individual zones, the authors investigate the relationship between radar scattering and firn physical properties. They operated surface-based radar systems at five different sites on the Greenland Ice Sheet. In the dry snow zone the angular variation of the backscattering coefficient indicates that at high incidence angles the return energy is dominated by volume scattering. They also observe a systematically higher backscattering coefficient when the physical temperature is low and all the other parameters are identical. In the wet snow zone the backscatter coefficient is temporally dependant as the temperature variations affect the moisture content and modifies the spectral backscattered energy. The snow and ice surface roughnesses determine the angular response. In the percolation zone, the backscatter coefficient is independent of the frequency and the angular response is also controlled by the ice structures (surface roughness, lenses, and pipes).","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114888689","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}
引用次数: 11
Singularity analysis with wavelets in polarimetric SAR imagery for vegetation mapping applications 基于小波的偏振SAR植被制图奇异性分析
IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293) Pub Date : 1999-06-28 DOI: 10.1109/IGARSS.1999.771540
G. D. De Grandi, J. Lee, D. Schuler, M. Simard, M. Sgrenzaroli, G. Kattenborn, F. Holecz, P. Pasquali
{"title":"Singularity analysis with wavelets in polarimetric SAR imagery for vegetation mapping applications","authors":"G. D. De Grandi, J. Lee, D. Schuler, M. Simard, M. Sgrenzaroli, G. Kattenborn, F. Holecz, P. Pasquali","doi":"10.1109/IGARSS.1999.771540","DOIUrl":"https://doi.org/10.1109/IGARSS.1999.771540","url":null,"abstract":"Singularity and non-stationarity in images, such as edges and contours in the deterministic case, or fractal processes in the stochastic case, carry important thematic information. In particular we are interested in the evolution of structures with scale and polarization state in SAR images for land applications. We propose a technique to extract this type of information based on a multi-resolution analysis (MRA) using wavelets. The MRA is extended to include the wave polarization state as an additional dimension. Examples of the technique's application are reported and the main lines along which this research is developing in our laboratories is discussed.","PeriodicalId":169541,"journal":{"name":"IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115004065","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}
引用次数: 9
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信