文章基本信息

标题：HEIGHT GRADIENT APPROACH FOR OCCLUSION DETECTION IN UAV IMAGERY
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作者：H. C. Oliveira ; A. F. Habib ; A. P. Dal Poz 等
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2015
卷号：XL-1/W4
页码：263-268
DOI：10.5194/isprsarchives-XL-1-W4-263-2015
出版社：Copernicus Publications
摘要：The use of Unmanned Aerial Vehicle (UAV) significantly increased in the last years. It is used for several different applications, such as mapping, publicity, security, natural disasters assistance, environmental monitoring, 3D building model generation, cadastral survey, etc. The imagery obtained by this kind of system has a great potential. To use these images in true orthophoto generation projects related to urban scenes or areas where buildings are present, it is important to consider the occlusion caused by surface height variation, platform attitude, and perspective projection. Occlusions in UAV imagery are usually larger than in conventional airborne dataset due to the low-altitude and excessive change in orientation due to the low-weight and wind effects during the flight mission. Therefore, this paper presents a method for occlusion detection together with some obtained results for images acquired by a UAV platform. The proposed method shows potential in occlusion detection and true orthophoto generation
关键词：UAV; DSM; TIN; Double Mapping; Height Gradient; Occlusion Detection; True Orthophoto