Introduction - If you have any usage issues, please Google them yourself
The BMP format images, its former 54-byte file header information is not, from the first 55 bytes beginning to the end of all the data is color image data. If you only modify the data without modifying the color image file header information, then bmp image size unchanged and can be normal use. Of course, in order to control image quality, for the implantation of the way the data, we need a little discretion. A bmp image to hide our designated information, storage space is essential. Information in order to guarantee the quality of images before and after implantation no obvious change, we can only put information wrote bmp image color data for each byte on the low. In this way, each byte to change the volume of not more than 0Fh, the impact on image quality is very small, almost to tell with the naked eye do not come out. Source package has at contrast map, everyone can personally verify comparison.
Principle namely: bmp image with the original color data of adjacent two of the l