中文说明：本文件中包含了基于互信息的图像配准中各种互信息的计算方法，有传统意义上的互信息，归一化互信息，区域互信息等，思路清晰，简单易懂,每一个文件就是一种互信息计算方法
English Description：
This file contains the calculation method of image registration based on mutual information in a variety of mutual information, there is the traditional sense of mutual information, normalized mutual information, the regional mutual information, clear, easy to understand, every file is a kind of mutual information calculation method