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Optical Engineering

Triangulation-based laser range finder using a complementary metal-oxide semiconductor image sensor for application to automotive systems
Author(s): Daniel Jih-Huah Wu; Kuo-Yang Horng; Rong-Seng Chang
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Paper Abstract

A low-cost prototype of a laser range finder using a complementary metal-oxide semiconductor (CMOS) image sensor is developed for the automotive field. The system presented here is based on triangulation. The centroid of the infrared laser spot on the CMOS image sensor is converted into pixel coordinates proportional to the distance to be measured. The system is operated in two modes: continuous wave (cw) and pulsed mode. A comparison of these two modes is also conducted and discussed here. Based on the experimental results, the distance can be measured with an accuracy of better than 1.1% within the range of 5 to 45 m.

Paper Details

Date Published: 1 April 2006
PDF: 7 pages
Opt. Eng. 45(4) 044302 doi: 10.1117/1.2189831
Published in: Optical Engineering Volume 45, Issue 4
Show Author Affiliations
Daniel Jih-Huah Wu, National Central Univ. (Taiwan)
Kuo-Yang Horng, Chung Shan Institute of Science and Technology (Taiwan)
Rong-Seng Chang, National Central Univ. (Taiwan)


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