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Proceedings Paper

Calibration of a phase-based 3D imaging system based on uneven fringe projection technique
Author(s): Zonghua Zhang; Haiyan Ma; Hui Feng; Zhao Jing; Tong Guo; Sixiang Zhang
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Paper Abstract

We present a simple calibration method of the phase-based 3D imaging systems based on an uneven fringe projection method. The relationship between absolute phase and depth is linear and independent of pixel position, which can be represented by a polynomial function. By designing a plate having discrete markers with known separate distance in between on the plate surface and projecting uneven fringe pattern onto it, one can calculate the absolute phase of the centre on each marker. The 3D coordinates of all the markers can be obtained by a general CCD camera calibration method. So coefficient set of the polynomial function are determined by using the obtained absolute phase and depth of all the markers. The proposed method was applied to calibrate a phase-based 3D imaging system. Experimental results and performance evaluation show that the proposed calibration method can easily build up the accurate relationship between absolute phase and depth information data.

Paper Details

Date Published: 11 November 2010
PDF: 10 pages
Proc. SPIE 7855, Optical Metrology and Inspection for Industrial Applications, 78550U (11 November 2010); doi: 10.1117/12.868768
Show Author Affiliations
Zonghua Zhang, Hebei Univ. of Technology (China)
Haiyan Ma, Hebei Univ. of Technology (China)
Hui Feng, Hebei Univ. of Technology (China)
Zhao Jing, Hebei Univ. of Technology (China)
Tong Guo, Tianjin Univ. (China)
Sixiang Zhang, Hebei Univ. of Technology (China)

Published in SPIE Proceedings Vol. 7855:
Optical Metrology and Inspection for Industrial Applications
Kevin Harding; Peisen S. Huang; Toru Yoshizawa, Editor(s)

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