Rgb to Yuv,Tuv to Rgb转换（C# emgucv）-白红宇

Rgb to Yuv,Tuv to Rgb转换（C# emgucv）

阅读量：7115 次

发布时间：2019-06-28

本文共 2391 字，大约阅读时间需要 7 分钟。

private void Rgb2Yuv(Image
    
      img, Image
     
       yImg, Image
      
        uImg, Image
       
         vImg)        {            //  Y= 0.3*R + 0.59*G + 0.11*B            //  U= (B-Y) * 0.493            //  V= (R-Y) * 0.877            double Y = 0.0, U = 0.0, V = 0.0;            for (int h = 0; h < img.Height; ++h)            {                for (int w = 0; w < img.Width; ++w)                {                    //Y = 0.11 * img.Data[h, w, 0] + 0.59 * img.Data[h, w, 1] + 0.3 * img.Data[h, w, 2];                    //U = (img.Data[h, w, 0] - Y) * 0.493;                    //V = (img.Data[h, w, 2] - Y) * 0.877;                    Y = 0.257 * img.Data[h, w, 0] + 0.504 * img.Data[h, w, 1] + 0.098 * img.Data[h, w, 2] + 16;                    U = 0.148 * img.Data[h, w, 0] - 0.291 * img.Data[h, w, 1] + 0.439 * img.Data[h, w, 2] + 128;                    V = 0.439 * img.Data[h, w, 0] - 0.368 * img.Data[h, w, 1] - 0.071 * img.Data[h, w, 2] + 128;                    yImg.Data[h, w, 0] = Y;                    uImg.Data[h, w, 0] = U;                    vImg.Data[h, w, 0] = V;                }            }        }        //Y = 0.257R + 0.504G + 0.098B + 16        //U = 0.148R - 0.291G + 0.439B + 128        //V = 0.439R - 0.368G - 0.071B + 128        //B = 1.164(Y - 16) + 2.018(U - 128)        //G = 1.164(Y - 16) - 0.813(V - 128) - 0.391(U - 128)        //R = 1.164(Y - 16) + 1.596(V - 128)        private void Yuv2Rgb(Image
        
          yImg, Image
         
           uImg, Image
          
            vImg, Image
           
             img) { //R = Y + 1.4075 *（V-128） // G = Y – 0.3455 *（U –128） – 0.7169 *（V –128） // B = Y + 1.779 *（U – 128） double Y = 0.0, U = 0.0, V = 0.0; for (int h = 0; h < img.Height; ++h) { for (int w = 0; w < img.Width; ++w) { Y = yImg.Data[h, w, 0]; U = uImg.Data[h, w, 0]; V = vImg.Data[h, w, 0]; //byte R = (byte)(Y + 1.4075 *(V-mid)); //byte G = (byte)(Y-0.3455 *(U-mid)-0.7169*(V-mid)); //byte B = (byte)(Y + 1.779 *(U-mid)); byte B = (byte)(1.164 * (Y - 16) + 2.018 * (U - 128)); byte G = (byte)(1.164 * (Y - 16) - 0.813 * (V - 128) - 0.391 * (U - 128)); byte R = (byte)(1.164 * (Y - 16) + 1.596 * (V - 128)); if (B > 255) B = 255; if (B < 0) B = 0; if (G > 255) G = 255; if (G < 0) G = 0; if (R > 255) R = 255; if (R < 0) R = 0; img.Data[h, w, 0] = B; img.Data[h, w, 1] = G; img.Data[h, w, 2] = R; ; } } }