图像二值化处理，函数调用，位图访问方式得到像素点灰度值-Binary image processing, function calls, the access method of the bitmap pixel gray value

图像处理中的直方图，二值化和位图层分离的实现，用的opencv，devcpp。-A histogram of the image processing, the binarization and bit layers separated realization OpenCV devcpp.