BMP文件是Windows保存图像的一种通用文件格式，在数字图像处理方面占有重要的地位。BMP文件中保存的图像数据是一种DIB(Device-Independent Bitmap，即设备无关位图)，DIB是标准的Windows位图格式，它自带颜色信息，因此调色板管理非常容易。有许多文章是关于讲述如何将BMP文件读取、显示的，而如何将数据保存为BMP文件则不是太多，本文作者通过一个实例讲述这一过程。-BMP file is Windows to preserve the image of a common file format, in digital image processing, occupy an important position. BMP file saved in the image data is a DIB (Device-Independent Bitmap, that is device-independent bitmap), DIB is a standard Windows bitmap format, it comes with color information, so very easy palette management. There are many article on how to read BMP files, display, and how the data saved as BMP file is not too much, this article about the author, through an example of this process.