增大熵方法，在图像处理二值化是能快速设置比较合适的阈值，效率较高-Method of increasing entropy, in the binary image processing is able to quickly set up a more appropriate threshold, higher efficiency

可以读取256级灰度图片，并且计算该图片的信息熵，信息论要用到-Can read the 256-level grayscale images, and calculate the image of the information entropy, information theory use