文章基本信息

标题：Voxel Approach to Landscape Modelling
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作者：Ulla Pyysalo ; Tapani Sarjakoski
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：2008
卷号：XXXVII Part B4
页码：563-568
出版社：Copernicus Publications
摘要：In this paper, we present a method for 3D volumetric reconstruction of landscape from airborne laser scanner data. The method applies a voxel model, where volume is divided to sub-volume particles, voxels, associated with a scalar or vector value. In the presented study the voxel model is generated from airborne laser scanner data, which enables measurement of large areas. Laser scanning provides simultaneously 3D co-ordinates and intensity-values for the laser pulses reflected from the surfaces. The typical density of laser data is several points per square meter and instruments are able to register more than one echo of the returning signal. Therefore, airborne laser scanning provides information not just about the ground surface, but also about the objects on top of the ground surface. In the study, several voxel models are derived from two different laser measurement data sets covering the same area. The models are compared and analysed
关键词：Voxel Model; Airborne Laser Scanning; Intensity; Resolution