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Optical Engineering

Experimental analysis and improvement on camera calibration pattern
Author(s): Lulu Li; Wenchuan Zhao; Fan Wu; Yong Liu; Wei Gu
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Paper Abstract

Three typical calibration patterns, including checkerboard, Gaussian point grid, and crossed fringe patterns, are chosen to find a good one for camera calibration. Through computer simulation and camera intrinsic parameter calibration experiment, the crossed sine fringe pattern using fringe analysis method is defined as the one with the best precision. However, the phase information is obtained by Fourier transform (FT), which cannot detect the points located in the edge of the point grid. Thus, an innovative method uses phase shifting in the fringe analysis process is proposed, it can avoid the extraction misplacement in the edge of the point grid by the FT method, and make the crossed sine fringe pattern more usable in camera calibration. The camera extrinsic parameter calibration experiment proves the effectiveness of the recent method.

Paper Details

Date Published: 20 January 2014
PDF: 8 pages
Opt. Eng. 53(1) 013104 doi: 10.1117/1.OE.53.1.013104
Published in: Optical Engineering Volume 53, Issue 1
Show Author Affiliations
Lulu Li, Institute of Optics and Electronics (China)
Wenchuan Zhao, Institute of Optics and Electronics (China)
Fan Wu, Institute of Optics and Electronics (China)
Yong Liu, Univ. of Science and Technology of China (China)
Wei Gu, Institute of Optics and Electronics (China)


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