采用的是灰色世界法，先通过RGB转成YCrCb，然后在通过灰色世界算法自动调整白平衡。

对一幅RGB图像进行光线偏移调整，来使得图像的色彩达到一种平衡-Light offset adjustment on an RGB image to the image colors to achieve a balance

ImageMagic 圖片色彩平衡調整 Ever wonder how to extract data from a JPEG and manipulate it using only WPF? Or how WPF performs on a moderately sized image (10 MB)? The ImageMagic program provides an answer. The program opens an included 2592 x 3872 JPEG, ex