文献类型：会议论文

英文题名：STUDY OF MORPHOLOGICAL CROWN CONTROL IN LIDAR-DERIVED CANOPY HEIGHT MODEL

作者：Dan, Zhao[1] Yong, Pang[1] Li, Zengyuan[1] Bai Lina[1]

通信作者：Yong, P[1]

机构：[1]Chinese Acad Forestry, Inst Forest Resources Informat Tech, Beijing 100091, Peoples R China

会议论文集：IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

会议日期：JUL 22-27, 2012

会议地点：Munich, GERMANY

语种：英文

外文关键词：LiDAR; Canopy height model; morphological closing; crown control

年份：2012

摘要：Canopy height model (CHM) is an important model of LiDAR application in forestry. The quality of CHM directly or indirectly influences the subsequent forest parameters extraction and estimation. However, some abnormal changes of elevation exist in CHM regularly. This study tried to get crown area in CHM ignoring the negative influence from these changes using morphological crown control. The morphological crown control determined crown areas by a morphological closing operator with two thresholds. The results showed that our method could give the crown areas well. The thresholds' setting was discussed and they were mainly decided by the crown base height of the tree in object area and the CHM's resolution.