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Proceedings Paper

Automatic brightness control of laser spot vision inspection system
Author(s): Yang Han; Zhaoxia Zhang; Xiaodong Chen; Daoyin Yu
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Paper Abstract

The laser spot detection system aims to locate the center of the laser spot after long-distance transmission. The accuracy of positioning laser spot center depends very much on the system's ability to control brightness. In this paper, an automatic brightness control system with high-performance is designed using the device of FPGA. The brightness is controlled by combination of auto aperture (video driver) and adaptive exposure algorithm, and clear images with proper exposure are obtained under different conditions of illumination. Automatic brightness control system creates favorable conditions for positioning of the laser spot center later, and experiment results illuminate the measurement accuracy of the system has been effectively guaranteed. The average error of the spot center is within 0.5mm.

Paper Details

Date Published: 30 October 2009
PDF: 8 pages
Proc. SPIE 7495, MIPPR 2009: Automatic Target Recognition and Image Analysis, 749548 (30 October 2009); doi: 10.1117/12.833173
Show Author Affiliations
Yang Han, Tianjin Univ. (China)
Zhaoxia Zhang, Tianjin Univ. (China)
Xiaodong Chen, Tianjin Univ. (China)
Daoyin Yu, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 7495:
MIPPR 2009: Automatic Target Recognition and Image Analysis
Tianxu Zhang; Bruce Hirsch; Zhiguo Cao; Hanqing Lu, Editor(s)

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