灰度图转二值图在图像处理中是常用到的方法.原理也很简单,设置0-255中的一个值为门限值,像素大于等于门限的就是白的,否则就是黑的.关键是怎样选取这个门限值.本子程序就是解决这个问题的. -Grayscale binary image transfer is commonly used in image processing to the method principle is very simple, set a value of 0-255 in the threshold, the threshold of greater than or equal pixel is white, otherwise black. Key is how to select the threshold. book program is to solve this problem.