WIT Press


Automated Accuracy Estimates For DEM Derived From LiDAR-based DSM

Price

Free (open access)

Paper DOI

10.2495/MIS000321

Volume

24

Pages

9

Published

2000

Size

810 kb

Author(s)

J. Jaafar, G. Priestnall & P.M. Mather

Abstract

The main aim of this study is to introduce a technique for assessing Digital Elevation Models (OEMs) derived from LiDAR (Light Detection And Ranging)- based Digital Surface Models (DSMs). The accuracy estimates based on the Root Mean Square Error (RMSE) for the DEM at various grid resolutions are analysed. It is found that in the absence of above-surface features on the DEM, the computed RMSE at various grid resolutions for the DEM are almost constant. The technique outlined in this study will confirm the non-existence of above- surface features on the derived DEM to a certain extent, and consequently obtain the accuracy estimates for the derived DEM at various grid resolutions. 1 Introduction DEMs have benefits for many applications, such as in the creation of orthophotos, flood risk estimation stu

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