同济大学学报（自然科学版）2013，Vol.41Issue(4)：614-618,623,6.DOI:10.3969/j.issn.0253-374x.2013.04.022
面向大规模真正射影像生产的快速遮蔽检测方法
A Fast Approach to Detect Occlusions for Large-scale True Orthophoto Generation
摘要
Abstract
The proposed method detects the occlusions by checking the off-nadir angle of the line of sight connecting the perspective centre with the object point of interest.Then, the algorithm complexity of all the steps is estimated according to the mathematical computation theory.Finally, a method of the least complexity is obtained on the basis of the extreme point theory of differential calculus.Experiments show that the proposed method is efficient to avoid "M-portion", false occlusions and false visibilities caused by the rolling area, the incompatibility between the DSM and ground image resolution.It is a robust, accurate, fast and effective approach to generate high quality true orthophoto on a large scale.关键词
真正射影像/算法复杂度/径向扫描/最优分割数Key words
orthophoto/ algorithm complexity/ radial sweep/ optimum segmentation number分类
天文与地球科学引用本文复制引用
钟成,李卉,黄先锋..面向大规模真正射影像生产的快速遮蔽检测方法[J].同济大学学报（自然科学版）,2013,41(4):614-618,623,6.基金项目
国家"九七三"重点基础研究发展计划(2011CB707001) （2011CB707001）
国家自然科学基金(41102209,41102210) （41102209,41102210）
