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Title: Application of terrestrial laser scanning methodology in geometric tolerances analysis of tunnel structures
Authors: Lam, SYW
Issue Date: 2006
Publisher: Pergamon Press
Source: Tunnelling and underground space technology, 2006, v. 21, no. 3-4 How to cite?
Journal: Tunnelling and underground space technology 
Abstract: With the point-clouds from a terrestrial laser scanner, surveying of all types of geometric tolerance has never been easier in controlling all aspects of tunnel shape and providing displacement vectors of the finished components in the construction. This paper describes how to select a suitable laser scanner, the calibration method, the procedures for acquiring survey data by the instrument in the field, and the computational algorithms of computer software needed for registration, fusion and error analysis of multimodality and range images so that the point clouds obtained by the instrument can be applied effectively in assessing the various geometric tolerances of tunnel structures in the as-built surveying.
ISSN: 0886-7798
Appears in Collections:Conference Paper

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