打开并显示位图，做一些简单的图像处理，如图像灰度化、二值化。-Open and display a bitmap, do some simple image processing, such as gray-scale images, and binary.

1． 利用二进制流读取Bitmap位图文件； 2． 把读取彩色图像转换成灰度图像； 3． 提取并且显示彩色图像各个色彩通道；-1. Using the binary stream to read Bitmap bitmap file 2. To read the color image is converted into grayscale images 3. Extracting and displaying a color image of each color channel

编写自己的DIB类来显示BMP位图，并带有保存功能和灰度化以及二值化的功能-Write your own class to display BMP DIB bitmap, and with a save function and gray and binary functions