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18 December 2019 Systematic error analysis of line-structured light calibration
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Proceedings Volume 11338, AOPC 2019: Optical Sensing and Imaging Technology; 113381D (2019)
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China
Three-dimensional contour imaging is used to reconstruct the surface of complex contour. Line-structured light is characterized by fast measurement, large amount of data and nondestructive to contour surface and is widely used in 3-D imaging. Therefore, a series of calibration methods for line-structured light are also produced, such as cross-ratio invariance, triangulation method, polynomial and so on. However, the traditional calibration methods are complex and take a long time, so a simplified method is proposed. This method omits the complicated process of calculating the cross-ratio and obtains the equation of light plane by accurately calculating the external parameters between the target and the camera and get the 3-D points of the line-structured light by the pinhole camera model. What’s more, RANSAC is applied to get the more precious line-structured light plane by eliminating the wrong points. Moreover, errors are measured and analyzed during the process of structure light calibration.
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Zhongwen Fei, Zhiying Tan, Xiaobin Xu, Kaiyuan Zhu, and Guangyu Su "Systematic error analysis of line-structured light calibration", Proc. SPIE 11338, AOPC 2019: Optical Sensing and Imaging Technology, 113381D (18 December 2019);


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