Effects of LiDAR data reduction and breaklines on the accuracy of digital elevation model

Article

Liu, Xiaoye and Zhang, Zhenyu. 2011. "Effects of LiDAR data reduction and breaklines on the accuracy of digital elevation model." Survey Review. 43 (323), pp. 614-628. https://doi.org/10.1179/003962611X13117748892317
Article Title

Effects of LiDAR data reduction and breaklines on the accuracy of digital elevation model

ERA Journal ID4384
Article CategoryArticle
AuthorsLiu, Xiaoye (Author) and Zhang, Zhenyu (Author)
Journal TitleSurvey Review
Journal Citation43 (323), pp. 614-628
Number of Pages15
Year2011
Place of PublicationLeeds, WYorks. United Kingdom
ISSN0039-6265
1752-2706
Digital Object Identifier (DOI)https://doi.org/10.1179/003962611X13117748892317
Web Address (URL)http://www.maneyonline.com/doi/abs/10.1179/003962611X13117748892317
Abstract

This paper explores the effects of LiDAR data reduction on the accuracies of produced TINs and gridded DEMs. It examined to what extent a set of LiDAR (light detection and ranging) data can be reduced without sacrificing the accuracy of produced terrain model. A primary focus was on the integration of breaklines to the reduction process to assess the contribution of breaklines to improving
the accuracy of terrain models in data reduction. A series of TINs and gridded DEMs were produced and assessed at reduced data density levels with and without breaklines respectively. The results showed that LiDAR data can be reduced to a certain level without significantly decreasing the accuracy of produced terrain models. When incorporating breaklines into terrain modelling, the accuracy of produced TINs and gridded DEMs decreased only slightly as data density decreased, indicating that breaklines made a significant contribution to improving the accuracy of terrain models in data reduction.

KeywordsLiDAR; DEM; digital elevation model; data reduction; breaklines
ANZSRC Field of Research 2020370999. Physical geography and environmental geoscience not elsewhere classified
401304. Photogrammetry and remote sensing
460207. Modelling and simulation
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Byline AffiliationsAustralian Centre for Sustainable Catchments
Institution of OriginUniversity of Southern Queensland
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