不规则三角网高程的遮挡检测算法Occlusion detection algorithm based on TIN elevation
齐润冰
摘要(Abstract)：
针对多视影像匹配中由于遮挡导致的问题,该文提出一种基于不规则三角网(TIN)高程的遮挡检测算法。该方法根据已知的高程格网平面,构建出物方不规则三角网;根据三角网内插得出某一个地面点的高程值。对于这一地面点,如果在其搜索路径上的搜索点高程均低于搜索点所在位置的投影光束高度,则该点必定在影像上可见。实验表明,该文提出的算法能高效、准确地得到不可见的点,特别对尺寸较大的影像能快速计算。
关键词(KeyWords)： 遮挡检测;不规则三角网;高程;可见点
基金项目(Foundation):
作者(Author): 齐润冰
DOI: 10.16251/j.cnki.1009-2307.2018.10.024
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