Research on preprocessing method for CORONA satellite image

摘要

By the advantages on its' early time, high resolution and cheap price compared with other high resolution satellite images, CORONA image can be used for change detection studies, DEM extraction, tectonic studies and other applications. CORONA image does not digitally record surface information like other current remote sensing images, but through the exposure on the film. Because of the recording form, it contains serious brightness deviation between different images. In addition, the panoramic photography of CORONA generates the geometric distortion. In this paper the region of Yili river in Xinjiang province was selected as the experiment area. Through the study on the pre-process of CORONA images, it finally improves the quality of image that could satisfy the need of GIS mapping and provide foundation for the follow-up process of image analysis and information extraction.