[Insight-users] Problem in setting pixel values for RGB Image

[Harish Doddi]

Hi all,

I have created a RGBImage and copied a gray scale image to it. Now I would
like to set some pixel values in RGBImage to some colors lets say red,
green, etc.

My code is like this

  /* For RGB Pixels */
  RGBImageType::Pointer rgbImage = RGBImageType::New();
  rgbImage->SetRegions( image1->GetRequestedRegion() );
  rgbImage->CopyInformation( image1 );
  rgbImage->Allocate();
  /* Iterate through the images */
  /* Here image1 and image2 are gray scale MRI images */
  IteratorType it1( image1, image1->GetRequestedRegion());
  IteratorType it2( image2, image2->GetRequestedRegion());
  RGBIteratorType it3( rgbImage, rgbImage->GetRequestedRegion());

  for ( it1.GoToBegin(), it2.GoToBegin(), it3.GoToBegin(); !it1.IsAtEnd() &&
!it2.IsAtEnd();
    ++it1, ++it2, ++it3)
  {
   /* Find x and y */
   float x,y;
   x = it1.Get();
   y = it2.Get();
   int val = func(x,y);
   if(val == 0)
      it3.Set(RED_COLOR);
   else
      it3.Set(GREEN_COLOR);
  }


What should RED_COLOR and GREEN_COLOR be replaced with??

Thanks,
Harish
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