中文说明：
基于结构光四步相移法的三维重建。该程序为仿真程序，帮助理解原理。具体标定需要用到MATLAB标定工具箱。
English Description：
3D reconstruction based on structured light four step phase shift method. The program is a simulation program to help understand the principle. Specific calibration needs to use matlab calibration toolbox