基于opencv简单的将rgb图像转换为灰度图像。-Simply， based on opencv，a rgb image is converted to a grayscale image.

产生正旋光栅的程序，可以投影正旋光栅，从而用于物体的三维形貌测量。-Generate positive spin-grating procedures, can be projected sine grating, which is used to measure the three-dimensional shape of objects.