대한원격탐사학회:학술대회논문집 (Proceedings of the KSRS Conference)
- 대한원격탐사학회 2007년도 Proceedings of ISRS 2007
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- Pages.584-586
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- 2007
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- 1226-9743(pISSN)
AUTOMATIC TEXTURE EXTRACTION FROM AERIAL PHOTOGRAPHS USING THE ZI-BUFFER
- Han, Dong-Yeob (Chonnam National University) ;
- Kim, Yong-Il (Seoul National University) ;
- Yu, Ki-Yun (Seoul National University) ;
- Lee, Hyo-Seong (Sunchon National University) ;
- Park, Byoung-Uk (Hankyong National University)
- 발행 : 2007.10.31
초록
3D virtual modeling such as creation of a cyber city or landscape, or making a 3D GIS requires realistic textures. Automatic texture extraction using close range images is not yet efficient or easy in terms of data acquisition and processing. In this paper, common problems associated with automatic texture extraction from aerial photographs are explored. The ZI-buffer, which has depth and facet ID fields, is proposed to remove hidden pixels. The ZI-buffer algorithm reduces memory burden and identifies visible facets. The correct spatial resolution for facet gridding is tested. Error pixels in the visibility map were removed by filtering.