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如题，之前投影误差都会由系统计算出一个值，但现在每次都等于nan，并且生不成点云图
请参考:
http://www.deyisupport.com/cfs-file.ashx/__key/communityserver-discussions-components-files/106/8662.DLP_5F00_3D_5F00_SDK_5F00_Machine_5F00_Vision_5F00_Calibration.pdf
