C语言读入.yuv图像，依次输出Y,Cb,Cr分量像素值，并选取Y分量进行Huffman编码。-Read in C language. Yuv images, in turn, the output Y, Cb, Cr component pixels, and Y component of Huffman coding.

Convert RGB color values to YCbCr color space. used as a part of the color image pipeline in video and digital photography systems. Y′ is the luma component and CB and CR are the blue-difference and red-difference chroma components. Y′ (with prime)

颜色空间转换：RGB空间-->ycbcr空间。速度比ColorSpace调用快多了。 调用格式[y, cb, cr] = rgb2ycbcr(img) 输入img: rgb彩色图；y: 亮度，cb：蓝色，cr：红色 调用参考runTest.m-Color space conversion, RGB to ycbcr call format: [y, cb, cr] = rgb2ycbcr(img) input img: rgb image output r: i