对于立体匹配局部算法而言，匹配代价计算 和 支持窗口选择是很重要的两个问题：匹配代价计算通过前面的文章已经介绍了关于Adaptive Support-Weight和Rank Transform两种方法，对于支持窗口来说的，通常我们选取一个矩形窗-For local stereo matching algorithm, the matching cost calculation and support window selection is a very important two issues: matching cost calculation has been introduced by the previous article on Adaptive Support-Weight and Rank Transform are two ways to support the window is usually we choose a rectangular window