Automated DEM/DSM Accuracy Estimates Towards Land Change Detection
Price
Free (open access)
Volume
21
Pages
10
Published
1998
Size
955 kb
Paper DOI
10.2495/GIS980081
Copyright
WIT Press
Author(s)
Jasmee Jaafar & Gary Priestnall
Abstract
Recognition of buildings and other man-made objects from aerial images is an issue of considerable importance to many users of geo-information, including surveyors, geographers and planners. Integrating a priori information into procedures for the automatic recognition and reconstruction of cartographic objects from imagery has been examined by a number of researchers (Locherbach [1], Priestnall and Glover [2]). The general assumption that buildings are higher than their surrounding surface is used by various researchers such as Weidner and Forstner [3] to aid in detecting buildings from imagery. The results suggest that subtraction of a Digital Elevation Model (DEM) from a Digital Surface Model (DSM) is a feasible technique for detecti
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