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Proceedings Paper

Center location error correction of circular targets
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Paper Abstract

Circular targets are commonly used in vision measurement and photogrammetry. Due to the asymmetric projection, the geometric centroid of the ellipse projection and the true projection of the target center are not identical, which leads to a systematic center location error. A method to correct the center location error is presented in this paper. Surface normal directions of circular targets are determined by camera calibration in advance. Then the correction values of the geometric centroids are calculated with space analytic geometry. The experimental results show the improvement of accuracy can be achieved after error correction by our method.

Paper Details

Date Published: 7 September 2010
PDF: 7 pages
Proc. SPIE 7798, Applications of Digital Image Processing XXXIII, 779824 (7 September 2010); doi: 10.1117/12.860017
Show Author Affiliations
Yongkai Yin, Tianjin Univ. (China)
Xiaoli Liu, Shenzhen Univ. (China)
Ameng Li, Shenzhen Univ. (China)
Chenggong Zhang, Shenzhen Univ. (China)
Dong He, Shenzhen Univ. (China)
Xiang Peng, Tianjin Univ. (China)
Shenzhen Univ. (China)

Published in SPIE Proceedings Vol. 7798:
Applications of Digital Image Processing XXXIII
Andrew G. Tescher, Editor(s)

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