一种改进的投影装置标定方法

摘要： 提出双目结构光三维测量系统中投影装置参数标定的一种改进方法.利用投影装置将格雷码图案投向若干待测场景，两个相机拍摄和解码同样数量的待测场景照片，采用三角形准则恢复标定角点在空间中的位置，仿照相机标定解算的方法获得投影装置标定参数.该方法优势在于不需要特定的标定平面或者标定靶标，可在测量过程中直接对投影装置标定，也可在预标定之后在测量过程中对投影装置参数进行更新.试验验证方法的正确性和有效性.

An Improved Method of Projector Calibration

Abstract：A method of projector calibration for 3D object measurement system is presented in this paper. In this method, the gray code patterns are projected on a series of scenes to be measured by the projector, shot and then decoded by two cameras meantime. Under the triangle criterion, 3D corner positions of these patterns are computed, using which the projector’s calibration parameters are resolved with the typical camera calibration method. As this process doesn’t rely on a specified calibration plane or target, the projector calibration can be finished during the measurements and the projector parameters can be further updated after the pre calibration. The experiment results prove the validness of the method .