On the analysis of lidar point density for roof shaping

Tee-Ann Teo*, Liang Chien Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The objective of this investigation is to analyze the effects of point density on roof shaping. This research focuses on the relationship among point density of lidar, number of noise, complexity of roofs, and accuracy of generated roofs. We simulate the point clouds of roof in different densities and different shapes. Variant noise levels inside the roof are also considered in the simulation. We include the common roof shapes like flat, slat, gable, cylinder and sphere roof. The generated points are used to define a new shape using the least squares fitting and data snooping techniques. Then, the accuracy of generated roof can be determined by comparing the original and the rebuilt ones. Experimental results indicate that the accuracy is improving when the point density is increasing. In addition, the flat and non-flat roof may reach the accuracy of simulated point cloud when percentages of noise are 35 % and 15 %, respectively.

Original languageEnglish
Title of host publication28th Asian Conference on Remote Sensing 2007, ACRS 2007
Pages2072-2077
Number of pages6
StatePublished - 1 Dec 2007
Event28th Asian Conference on Remote Sensing 2007, ACRS 2007 - Kuala Lumpur, Malaysia
Duration: 12 Nov 200716 Nov 2007

Publication series

Name28th Asian Conference on Remote Sensing 2007, ACRS 2007
Volume3

Conference

Conference28th Asian Conference on Remote Sensing 2007, ACRS 2007
CountryMalaysia
CityKuala Lumpur
Period12/11/0716/11/07

Keywords

  • Lidar
  • Point density
  • Roof
  • Shaping

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  • Cite this

    Teo, T-A., & Chen, L. C. (2007). On the analysis of lidar point density for roof shaping. In 28th Asian Conference on Remote Sensing 2007, ACRS 2007 (pp. 2072-2077). (28th Asian Conference on Remote Sensing 2007, ACRS 2007; Vol. 3).