文章基本信息

标题：Potentiel Cartographique De L'imagerie Ikonos Geo
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作者：M. Ettarid ; F. Degaichia
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：2004
卷号：XXXV Part B4
页码：1161-1166
出版社：Copernicus Publications
摘要：The availability of high-resolution satellite imagery with stereo viewing capability coupled to unrestricted commercial availably and a good geometric accuracy has made the satellite imagery a possible alternative to the conventional aerial mapping. Ikonos is a new generation of these satellites, launched successfully in September 1999. The satellite sensor can generate one-meter panchromatic and four-meter multispectral images with off-nadir viewing capability. These high-resolution images theoretically opened unlimited promising perspectives for topographic and thematic mapping. The present paper comes, in complement to other studies, to investigate the cartographic potential of Ikonos imagery with regard to large mapping scales (1/20000 to 1/5000). The investigation concerns the informational content and the metric aspect of these images. Testing was carried out on the 1m panchromatic Geo imagery, and concerned a part of the city of Algiers (Algeria). The semantic analysis has been made by extracting the image information and comparing it to the informational content of maps derived by usual photogrammetric stereo plotting at different scales. The image was also rectified using ground control points determined by GPS and aerial triangulation and a DTM derived by conventional stereo photogrammetric techniques. A qualitative (visual) analysis of the precision has been made on the basis of comparisons with maps at different scales derived from photogrammetric stereo plotting. The quantitative analysis was based on the root mean square errors (RMS) computed from residuals on checkpoints. The results obtained from these tests, either in terms of RMS or semantic content, showed that, in the context of this investigation, mapping at scales up to 1/10000 is within the possibilities of Ikonos imagery, whereas mapping at 1/5000 remains however critical
关键词：Photogrammetry; satellite; mapping; ortho image; high resolution; accuracy