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Proceedings Paper

Computer simulation study of distance uncertainty in laser triangulation
Author(s): Ji-Tao Li; Tao Xian; Xianyu Su
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Paper Abstract

In industrial applications some single point laser range sensing systems by triangulation are often used. There are many algorithms to determine the center position. But there are basic physical limits ofaccuracy ofcenter position which is introduced by laser speckle on image. In this paper we conduct a computer simulation on the intensity distribution and graity of image speckle pattern produced under the completely coherent illumination, and give a direct result on some possible factors such as the observation aperture of an imaging system, the surface roughness, the number of microtopology units included in the point spread function and the width of illumination area. The result confirms the dependence of distance uncertainty on the observation aperture of an imaging system. A comparison between the simulation and earlier theoretical results is also given.

Paper Details

Date Published: 31 December 1996
PDF: 4 pages
Proc. SPIE 2866, International Conference on Holography and Optical Information Processing (ICHOIP '96), (31 December 1996); doi: 10.1117/12.263036
Show Author Affiliations
Ji-Tao Li, Sichuan Univ. (China)
Tao Xian, Sichuan Univ. (China)
Xianyu Su, Sichuan Univ. (China)


Published in SPIE Proceedings Vol. 2866:
International Conference on Holography and Optical Information Processing (ICHOIP '96)
Guoguang Mu; Guofan Jin; Glenn T. Sincerbox, Editor(s)

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