用MFC写的实现BMP格式图像点运算的源码。包括显示直方图、灰度的线性变换、阀值变换、窗口变换、灰度拉伸和灰度均衡。-MFC write with the realization of BMP format images point-source computing. Including the display histogram, gray linear transform, threshold transform, transform window, gray and gray-balanc