纯C语言实现图像处理知道如何用纯C语言（不能用Turbo C ，windows API 和 MFC）对BMP图像实行二值化处理,最好有源代码-Pure C language image processing know how to use pure C language (can not use Turbo C, windows API and MFC) on the implementation of BMP image binarization, the best source code