全局阈值处理方法对单色图像进行分割，我们从适合检测不连续亮度的方法开始，比如点、线、边缘为大家介绍使用Otsu's方法的最佳全局阈值处理。(Global threshold processing method for monochrome image segmentation, we start with suitable for detecting method of discontinuous brightness, such as dot, line, edge to introduce the use Otsu 's the best global threshold processing method.)