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I am trying to implement matlab rgb2xyz function in opencv using c++. I used cvtColor function for implementation. But my output image is not similar to Matlab output image.Should I use any other function or operations on image ?Here is my input image ,matlab output image and my output image.

I am trying to implement matlab rgb2xyz function in opencv using c++. I used cvtColor function for implementation. But my output image is not similar to Matlab output image.Should I use any other function or operations on image ?Here is my input image ,matlab output image and my output image. Hai... I got 1 more code for the implementation of rgb2ntsc.But it gave me black output image. Here is the code. for(int i=0;i<rn;i++) {="" for(int="" j="0;j&lt;cn;j++)" {="" vec3b="" intensity="image.at&lt;Vec3b">(i,j); R= intensity.val[2]; G= intensity.val[1]; B= intensity.val[0]; r = R/255.f; //R 0..1 g = G/255.f; //G 0..1 b = B/255.f; //B 0..1 if (r <= 0.04045) r = r/12; else r = (float)pow((r+0.055)/1.055,2.4); if (g <= 0.04045) g = g/12; else g = (float)pow((g+0.055)/1.055,2.4); if (b <= 0.04045) b = b/12; else b = (float)pow((b+0.055)/1.055,2.4); X = 0.436052025fr + 0.385081593fg + 0.143087414f b; Y = 0.222491598fr + 0.71688606f g + 0.060621486f *b; Z = 0.013929122fr + 0.097097002f*g + 0.71418547f *b; Result.at<vec3b>(i,j)[0]=(float)X; Result.at<vec3b>(i,j)[1]=(float)Y; Result.at<vec3b>(i,j)[2]=(float)Z; } }

I am trying to implement matlab rgb2xyz function in opencv using c++. I used cvtColor function for implementation. But my output image is not similar to Matlab output image.Should I use any other function or operations on image ?Here is my input image ,matlab output image and my output image. Hai... I got 1 more code for the implementation of rgb2ntsc.But rgb2xyz.But it gave me black output image. Here is the code. for(int i=0;i<rn;i++) {="" for(int="" j="0;j&lt;cn;j++)" {="" vec3b="" intensity="image.at&lt;Vec3b">(i,j); R= intensity.val[2]; G= intensity.val[1]; B= intensity.val[0]; r = R/255.f; //R 0..1 g = G/255.f; //G 0..1 b = B/255.f; //B 0..1 if (r <= 0.04045) r = r/12; else r = (float)pow((r+0.055)/1.055,2.4); if (g <= 0.04045) g = g/12; else g = (float)pow((g+0.055)/1.055,2.4); if (b <= 0.04045) b = b/12; else b = (float)pow((b+0.055)/1.055,2.4); X = 0.436052025fr + 0.385081593fg + 0.143087414f b; Y = 0.222491598fr + 0.71688606f g + 0.060621486f *b; Z = 0.013929122fr + 0.097097002f*g + 0.71418547f *b; Result.at<vec3b>(i,j)[0]=(float)X; Result.at<vec3b>(i,j)[1]=(float)Y; Result.at<vec3b>(i,j)[2]=(float)Z; } }

I am trying to implement matlab rgb2xyz function in opencv using c++. I used cvtColor function for implementation. But my output image is not similar to Matlab output image.Should I use any other function or operations on image ?Here is my input image ,matlab output image and my output image.image. Hai...

Edit: I got 1 more code for the implementation of rgb2xyz.But it gave me black output image. Here is the code.

for(int i=0;i<rn;i++) {="" for(int="" j="0;j&lt;cn;j++)" {="" vec3b="" intensity="image.at&lt;Vec3b">(i,j);
i=0;i<rn;i++)
    {
      for(int j=0;j<cn;j++)
       {
         Vec3b intensity = image.at<Vec3b>(i,j);
         R= intensity.val[2];
         G= intensity.val[1];
         B= intensity.val[0];
         r = R/255.f; //R 0..1
         g = G/255.f; //G 0..1
         b = B/255.f; //B 0..1
         if (r <= 0.04045)
             r = r/12;
         else
             r = (float)pow((r+0.055)/1.055,2.4);
         if (g <= 0.04045)
             g = g/12;
         else
             g = (float)pow((g+0.055)/1.055,2.4);
         if (b <= 0.04045)
             b = b/12;
         else
             b = (float)pow((b+0.055)/1.055,2.4);
         X =  0.436052025fr     + 0.385081593fg 0.436052025f*r     + 0.385081593f*g + 0.143087414f b;
*b;
         Y =  0.222491598fr 0.222491598f*r     + 0.71688606f g *g + 0.060621486f *b;
         Z =  0.013929122fr 0.013929122f*r     + 0.097097002f*g + 0.71418547f  *b;
         Result.at<vec3b>(i,j)[0]=(float)X;
         Result.at<vec3b>(i,j)[1]=(float)Y; 
         Result.at<vec3b>(i,j)[2]=(float)Z; Result.at<Vec3b>(i,j)[0]=(float)X;
         Result.at<Vec3b>(i,j)[1]=(float)Y; 
         Result.at<Vec3b>(i,j)[2]=(float)Z; 
      }
  }
}

I am trying to implement matlab rgb2xyz function in opencv using c++. I used cvtColor function for implementation. But my output image is not similar to Matlab output image.Should I use any other function or operations on image ?Here is my input image ,matlab output image and my output image. image.

Edit: Hai... I got 1 more code for the implementation of rgb2xyz.But it gave me black output image. Here is the code.

 for(int i=0;i<rn;i++)
     {
       for(int j=0;j<cn;j++)
        {
         Vec3b intensity = image.at<Vec3b>(i,j);
         R= intensity.val[2];
         G= intensity.val[1];
         B= intensity.val[0];
         r = R/255.f; //R 0..1
         g = G/255.f; //G 0..1
         b = B/255.f; //B 0..1
         if (r <= 0.04045)
             r = r/12;
         else
             r = (float)pow((r+0.055)/1.055,2.4);
         if (g <= 0.04045)
             g = g/12;
         else
             g = (float)pow((g+0.055)/1.055,2.4);
         if (b <= 0.04045)
             b = b/12;
         else
             b = (float)pow((b+0.055)/1.055,2.4);
         X =  0.436052025f*r     + 0.385081593f*g + 0.143087414f *b;
         Y =  0.222491598f*r     + 0.71688606f *g + 0.060621486f *b;
         Z =  0.013929122f*r     + 0.097097002f*g + 0.71418547f  *b;
         Result.at<Vec3b>(i,j)[0]=(float)X;
         Result.at<Vec3b>(i,j)[1]=(float)Y; 
         Result.at<Vec3b>(i,j)[2]=(float)Z; 
      }
  }