Effect of grid resolution and terrain characteristics on data from DTM

Heesom, D.; Heesom, David; Mahdjoubi, L.

Abstract

Previous work in digital terrain modeling (DTM) has shown that if regular gridded-data sets are used in the construction of the model, both the resolution of the gridded-data set and the characteristics of the terrain being modeled have an effect on the accuracy of digital terrain models. The main objective of this study is to test the hypothesis that both the resolution of the gridded-data set and the characteristics of the terrain being modeled have an effect on the accuracy of any derived data. To test this hypothesis, the terrain was classified in terms of its roughness. Various forms of data were derived from the terrain model; these include volumes, surface area, contours, and cross sections. The accuracy for each of these quantities was calculated by comparing them with values obtained from a control model. This research concluded that by both increasing the resolution of the regular gridded-data sets and varying the characeristics of the terrain, the accuracy of any derived data is affected.

• Journal Article Type: Article
• Publication Date: Apr 1, 2001
• Journal: Journal of Computing in Civil Engineering
• Print ISSN: 0887-3801
• Electronic ISSN: 1943-5487
• Publisher: American Society of Civil Engineers
• Peer Reviewed: Not Peer Reviewed
• Volume: 15
• Issue: 2
• Pages: 137-143
• DOI: https://doi.org/10.1061/%28ASCE%290887-3801%282001%2915%3A2%28137%29
• Keywords: grid resolution, terrain characteristics, data, DTM
• Public URL: https://uwe-repository.worktribe.com/output/1087361
• Publisher URL: http://dx.doi.org/10.1061/(ASCE)0887-3801(2001)15:2(137)
• Additional Information: Additional Information : This paper was based on a research project, funded by WS Atkins, to investigate whether the resolution of the grid-data set and the characteristics of the terrain being modeled have an effect on the accuracy of any derived data. The research was conducted as part of the Virtual Design Enterprise Centre (VDEC) (http://www.videc.org.uk/). Mahdjoubi was the Director of VDEC and Heesom was a research collaborator of the Centre. Lead author