标题：块匹配
参考论文：PatchMatch: A Randomized Correspondence Algorithm for Structural Image Editing
https://gfx.cs.princeton.edu/pubs/Barnes_2009_PAR/index.php
http://vis.berkeley.edu/courses/cs294-69-fa11/wiki/images/1/18/05-PatchMatch.pdf
参考博客：https://blog.csdn.net/stormouse/article/details/54667773
编译环境： window10 + VS2017 + openCV