标题:DEVELOPMENT OF AN ALGORITHM OF ABSOLUTE ATMOSPHERIC CORRECTION FOR MULTITEMPORAL SATELLITE IMAGES.APPLICATION TO THE REGION OF ORAN (WEST OF ALGERIA
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:1418-1422
出版社:Copernicus Publications
摘要:This paper presents an algorithm for modelling of the different parameters which influence the reflectance at the satellite's level in order to estimate the reel reflectance of the objects at the ground surface. However, the model described would compensate the atmosp heric effects, the irradiance and the observation conditions, and characterise the objects by their unique and reel values. Thus, the model developed makes directly two images comparable by the compute o f the reel reflectance value of the objects fro m image's digital number. In this study, the algorithm has been tested and validated by using two images of Landsat TM (1984,1993) of the Oran's regio n (West of Algeria). The results on this paper sho w that, in the illuminated area as sea water, sand, vegetal covert, the difference between the two date's reflectance is nearly null. This, shows that these areas have been totally corrected by the algorithm. Except in the mountain's areas where the problem of shadow still exists and it has not been resolved. On the other hand, in the areas where the changes occurred (New road of Misserghine and the trails effected into the forest of M'sila), the reflectance is highly different between the two dates