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Matching Size Determination According to Land Cover Property of IKONOS Stereo Imagery  

Lee, Hyo-Seong (순천대학교 공과대학 토목공학과)
Park, Byung-Uk (한경대학교 공과대학 토목공학과)
Lee, Byung-Gil (경기대학교 공과대학 토목공학과)
Ahn, Ki-Weon (경상대학교 공과대학 토목공학과, 경상대학교 공학연구원)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.25, no.6_2, 2007 , pp. 587-597 More about this Journal
Abstract
This study determines matching size for digital elevation model (DEM) production according to land cover property from IKONOS Geo-level stereo image. We applied area based matching method using correlation coefficient of pixel brightness value between the two images. After matching line (where "matching line" implies straight line that is approximated to complex non-linear epipolar geometry) is established by exterior orientation parameters to minimize search area, the matching is carried out based on this line. The experiment is performed according to land cover property, which is divided off into four areas (water, urban land, forest land and agricultural land). In each of the test areas, matching size is selected using a correlation-coefficient image and parallax image. As the results, optimum matching size of the images was selected as $81{\times}81$ pixels window, $21{\times}21$ pixels window, $119{\times}119$ pixels window and $51{\times}51$ pixels window in the water area, urban land, forest land and agricultural land, respectively.
Keywords
IKONOS; Land cover; Matching area; Correlation coefficient; Parallax image;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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