随机模式投影双目测量系统中的单目测量方法

针对基于随机模式投影的双目立体测量系统的特点，提出了一种由单摄像机-投影器构成两个单目测量单元的测量方法。首先给出了一个简洁有效的标定算法，该算法只需从不同角度拍摄随机光场在普通白板上的图像（称为标定图像），就可以标定纯随机模板上每一点经投影镜头发出的光线。无需标定投影镜头畸变，且精度不受投影镜头畸变的影响。然后将随机光场照射下的被测物体图像与标定图像进行亚像素精度的像点匹配，根据三角测量原理获取物体表面的三维点云数据。最后采用标准平面对该方法进行测量精度验证，并给出了具体的测量实例。实验结果表明：平面度测量精度为0.0175mm，不确定度<0.05mm(3σ)。由于采用单目测量单元进行测量时，空间一点无需在两个摄像机视场内均可见，因此避免了因局部高光、被测物体自身遮挡等原因引起的三维测量数据丢失，有效地弥补了双目测量系统的不足。

Monocular measurement in a binocular measurement system with instantaneous random illumination

To alleviate the effect of local highlight and self occlusion of a random-pattern-projection-based binocular stereo measurement system,a novel method by using a single camera and the projector as a monocular measurement unit was presented.Firstly,a simple and effective calibration algorithm was proposed to construct the line functions of the rays emitted from every point of the random pattern plate through a projector lens,then the calibration was carried out by just taking several images(called calibrated ...