한국측량학회:학술대회논문집 (Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference)
- 한국측량학회 2007년도 춘계학술발표회 논문집
- /
- Pages.273-276
- /
- 2007
라이다 DSM을 이용한 엄밀정사영상 제작
Generation of True-Orthphotos using a LIDAR DSM
초록
In this study, we generated DSM(Digital Surface Model)s and orthophotos with both LIDAR data and scanned aerial photos and compared them with those generated from only the scanned photos. We checked the relief displacements of buildings appearing in the generated orthophotos, where the displacement should not be exist in a true-orthophoto. The RMSE of the relief displacement in the orthophoto generated using a LIDAR DSM is 3 m while the RMSE in the orthophotos from a DSM based on the image matching is 6.1 m. It was revealed that the orthophoto from a LIDAR DSM are closer to a true-orthophoto. But the results in the accuracy test and similarity evaluation of the generated orthophotos were contrary to former results because the roof texture of buildings were expanded to occlusion areas around the buildings. With the central area of the photo, we can generate sufficiently accurate true-orthophotos using a LIDAR DSM.
키워드