求取一幅灰度图像中的光斑形心的位置的Matlab的源代码。算法使用的是最大类间方差法编写的程序，可以得到光斑形心位置的（x,y）坐标。-strike a gray image of the heart-shaped spot on the location of the source code Matlab. The algorithm used is MBV Law prepared by the procedures, can be heart-shaped spot position (x

最大类间方差法原理：最大类间方差法是由日本学者大津于1979年提出的,是一种自适应的阈值确定的方法,又叫大津法,简称OTSU。它是按图像的灰度特性,将图像分成背景和目标2 部分。-Otsu method works: Otsu method by Otsu, Japan scholars put forward in 1979, is an adaptive method of determining the threshold, also known as Otsu method, refer