Pixel correspondence calibration method of a 2CCD camera based on absolute phase calculation

Zonghua Zhang; Guoquan Zheng; Shujun Huang

doi:10.1117/12.2072832

13 November 2014 Pixel correspondence calibration method of a 2CCD camera based on absolute phase calculation

Zonghua Zhang, Guoquan Zheng, Shujun Huang

Proceedings Volume 9276, Optical Metrology and Inspection for Industrial Applications III; 927604 (2014) https://doi.org/10.1117/12.2072832
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

This paper presents a novel calibration method to build up pixel correspondence between the IR CCD sensor and the visible CCD sensor of a 2CCD camera by using absolute phase calculation. Vertical and horizontal sinusoidal fringe patterns are projected onto a white plate surface through the visible and infrared (IR) channels of a DLP projector. The visible and IR fringe patterns are captured by the IR sensor and visible sensor respectively. Absolute phase of each pixel at IR and visible channels is calculated by using the optimum three-fringe number selection method. The precise pixel relationship between the two channels can be determined by the obtained absolute phase data. Experimental results show the effectiveness and validity of the proposed 2CCD calibration method. Due to using continuous phase information, this method can accurately give pixel-to-pixel correspondence.

Citation Download Citation

Zonghua Zhang, Guoquan Zheng, and Shujun Huang "Pixel correspondence calibration method of a 2CCD camera based on absolute phase calculation", Proc. SPIE 9276, Optical Metrology and Inspection for Industrial Applications III, 927604 (13 November 2014); https://doi.org/10.1117/12.2072832

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