WIT Press


Automated DEM/DSM Accuracy Estimates Towards Land Change Detection

Price

Free (open access)

Paper DOI

10.2495/GIS980081

Volume

21

Pages

10

Published

1998

Size

955 kb

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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