A continuative variable resolution digital elevation model for ground-based photogrammetry
作者:Liu, ZQ (Liu, Zhaoqin)[ 1,2 ] ; Peng, M (Peng, Man)[ 1 ] ; Di, KC (Di, Kaichang)[ 1 ]
COMPUTERS & GEOSCIENCES
卷: 62  页: 71-79
DOI: 10.1016/j.cageo.2013.10.001
出版年: JAN 2014

摘要
A new digital elevation model (DEM) is presented for accurate surface representation in photogrammetric processing of stereo ground-based imagery. This model is named the continuative variable resolution DEM (cyrDEM). In contrast to traditional grid-based DEMs that have only one fixed resolution, this new model can provide resolutions that vary depending on the range represented in the ground-based imagery. Functions for deriving radial and angular resolutions from the cvrDEM have been derived, and a corresponding storage structure for the polar coordinates has been developed. Experimental results using publically available NASA Mars Exploration Rover 2003 imagery demonstrate the effectiveness of the cvrDEM model: It can significantly reduce storage space while fully maintaining the most useful level of mapping accuracy relevant to the range from the imaging station. A terrestrial laser scanning data set was also used to validate the effectiveness of the cvrDEM. (C) 2013 Elsevier Ltd. All rights reserved.

通讯作者地址: Di, KC (通讯作者)
Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing, Peoples R China.
地址:
[ 1 ] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing, Peoples R China
[ 2 ] Sci & Technol Aerosp Flight Dynam Lab, Beijing, Peoples R China