在DSP上实现灰度变换，图像的灰度变换通过建立灰度映射来调整源图像的灰度，从而达到图像增强的目的，灰度映射通常是用灰度变换曲线来表示的。-In the DSP to achieve gray level transformation, the image of gray-scale transformation to adjust through the establishment of mapping the source image gray gray, so as to achieve t