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：2000
卷号：XXXIII Part B7(/1-4)
页码：382-388
出版社：Copernicus Publications
摘要：In this study temporal multispectral SPOT satellite images were examined for accurate mapping of the reclaimed areas under the irrigation and wither conditions in the Egyptian deserts. A combination of image interpretation, image thresholding, vegetation indices and unsupervised classification techniques were applied. Three SPOT images of the same area (captured in 1992, 1995, and 1998) were processed with emphasis on detecting the changes at a small area as a test area where a governmental reclamation project is taking place. The detected increase in the reclaimed area was examined against the actual applied one. The proved processing technique was applied on another area where some scattered reclamation process is carried out by private agencies. This study proved that the digital analysis of high spatial and spectral resolution SPOT multispectral images, with computer-aided visual approach, is a valuable tool for accurate detecting and locating of the new reclaimed areas. Accordingly, such technique can be applied for regular evaluation of the reclamation rates that taking place nowadays in the Egyptian deserts, such as Toshika project in upper Egypt
