标签：github opencv href mile http open lob mil learn
https://github.com/cyssmile/openCV_learning_notes/blob/master/opencv_test/opencv_012_hist_compare/opencv_012_hist_compare.cpp
直方相似性，协方差以及巴士距离
原文地址：https://www.cnblogs.com/cyssmile/p/12485551.html
