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23 February 2006 Two methods for CCD camera's image center measurement
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Practical application of two types of method for CCD camera's image center measurement is researched. With regard to image center, pixels' distribution to image plane is still symmetrical even under the influence of lens distortion. Based on this, with direct optical method, the image center is determined by the symmetry of pixels' position in vertical and horizontal directions on image plane. With lens distortion based perspective projection method, a complete imaging model is built and image center is a key element of the model. Two kinds of main lens distortion are considered in the model. Test is carried out and the comparison is made for two methods. The second method's strong convergence property is verified.
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Feng Wang, Jianzhong Cao, Yongxing Zou, Renkui Zhou, and Xiujuan Luo "Two methods for CCD camera's image center measurement", Proc. SPIE 6150, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 61504O (23 February 2006);


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