7 September 2010 Calibration of a dual-PTZ camera system for stereo vision
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In this paper, we propose a calibration process for the intrinsic and extrinsic parameters of dual-PTZ camera systems. The calibration is based on a complete definition of six coordinate systems fixed at the image planes, and the pan and tilt rotation axes of the cameras. Misalignments between estimated and ideal coordinates of image corners are formed into cost values to be solved by the Nelder-Mead simplex optimization method. Experimental results show that the system is able to obtain 3D coordinates of objects with a consistent accuracy of 1 mm when the distance between the dual-PTZ camera set and the objects are from 0.9 to 1.1 meters.
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Yau-Zen Chang, Yau-Zen Chang, Jung-Fu Hou, Jung-Fu Hou, Yi Hsiang Tsao, Yi Hsiang Tsao, Shih-Tseng Lee, Shih-Tseng Lee, } "Calibration of a dual-PTZ camera system for stereo vision", Proc. SPIE 7798, Applications of Digital Image Processing XXXIII, 77982F (7 September 2010); doi: 10.1117/12.860331; https://doi.org/10.1117/12.860331

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