文章基本信息

标题：Three Dimensional Data from SAR Images
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作者：Ian J. Dowman
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：1992
卷号：XXIX Part B4
页码：425-427
出版社：Copernicus Publications
摘要：The utility of SAR data, now becoming widely available, for mapping, is restricted because in the areas where it is most useful, that isareas where cloud cover is very high, there is also a lack of digital elevation models (DEMs) to use for terrain geocoding. A solution tothis problem is to derive the DEM from stereoscopic SAR images.A mathematical model is flrst needed which will allow three dimensional co-ordinates to be computed from image co-ordinates measuredin at least two SAR images. Provision must be made for various conflgurations of data such as parallel track, same side data, or crosstrack data, and the possible use of SAR images with optical images such as SPOT. The second requirement is to detennine a sufficientnumber of conjugate points to fonn the DEM and work done in stereo matching SAR data is described. A data pyramid is used to selectseed points for the Otto-Chau adaptive least squares method of stereo matching by region growing
关键词：SAR; ERS-l; Seasat; Digital elevation models; Stereo-matching