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http://dx.doi.org/10.7780/kjrs.2006.22.2.131

Detecting and Restoring the Occlusion Area for Generating the True Orthoimage Using IKONOS Image  

Seo Min-Ho (School of Civil, Urban & Geosystem Engineering, Seoul National University)
Lee Byoung-Kil (Civil Engineering, Hankyong National University)
Kim Yong-Il (School of Civil, Urban & Geosystem Engineering, Seoul National University)
Han Dong-Yeob (School of Civil, Urban & Geosystem Engineering, Seoul National University)
Publication Information
Korean Journal of Remote Sensing / v.22, no.2, 2006 , pp. 131-139 More about this Journal
Abstract
IKONOS images have the perspective geometry in CCD sensor line like aerial images with central perspective geometry. So the occlusion by buildings, terrain or other objects exist in the image. It is difficult to detect the occlusion with RPCs(rational polynomial coefficients) for ortho-rectification of image. Therefore, in this study, we detected the occlusion areas in IKONOS images using the nominal collection elevation/azimuth angle and restored the hidden areas using another stereo images, from which the rue ortho image could be produced. The algorithm's validity was evaluated using the geometric accuracy of the generated ortho image.
Keywords
orthorectification; LiDAR DSM; Z-buffer; IKONOS;
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