摘要研究图像空间坐标变换及变换后各像点的取值 。The space coordinate transform of image was discussed and the value of pixels was determined. The axial image of casting pipe can be spread as 2 dimension inner surface image of casting pipe.
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2Tsai R Y.A versatile camera calibration technique for high- accuracy 3D machine vision metrology using off-the-shelf tv and lenses [J].IEEE Journal of Robotics and Automation, 1987,3 (4) : 323-344.
3Lee S U, et al. A comparative Performance Study of Several Global Thresholding Techniques for Segmentation [C]//CVGIP (52),1990:171-190.
4Tsal RAn effieient and accurate camera calibration technique for 3D machine vision [C] // Proeeedings of ComputeVision and Pattern Recognition.USA:Miami Beach,Florida,1986:364-374.
5Tsai R Y.A versatile camera calibration technique for high-accuracy 3D machine vision metrology using off-the- shelf tv cameras and lenses[ J ].IEEE Journal of Robotics and Automation,1987,3(4): 323-344.
6Lee S U.A comparative Performance Study of Several Global Thresholding Techniques for Segmentation [ J ]. 1990.CVGIE 52:171-190.
