立体匹配分为初始代价计算、代价聚合、视差求解、视差优化，这是sgm代价聚合实现源码，使用c++语言实现，(This is a simple implementation of the SGM algorithm with the Birchfield/Tomasi pixelwise matching cost using the OpenCV library. It was created for a school project. It currently runs on one threa