National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41201351, 41401508]; Chinese Academy of SciencesChinese Academy of Sciences [XDA05050108]; South China Botanical Garden, Chinese Academy of SciencesChinese Academy of Sciences
机构署名：
本校为其他机构
院系归属：
理学院
摘要：
Topography affects forest canopy height retrieval based on airborne Light Detection and Ranging (LiDAR) data a lot. This paper proposes a method for correcting deviations caused by topography based on individual tree crown segmentation. The point cloud of an individual tree was extracted according to crown boundaries of isolated individual trees from digital orthophoto maps (DOMs). Normalized canopy height was calculated by subtracting the elevation of centres of gravity from the elevation of point cloud. First, individual tree crown boundaries...
