How to display OpenCV Mat on MFC View

Question

I thought displaying OpenCV2 Mat on MFC View is simple but is not. This is only relevant material I found on google. Excuse me for my ignorance but I can\'t find any other m

Answer 1

CvvImage is not available in new versions of OpenCV. Using the following code you can convert Mat to CImage and then display CImage everywhere you want:

int Mat2CImage(Mat *mat, CImage &img){
  if(!mat || mat->empty())
    return -1;
  int nBPP = mat->channels()*8;
  img.Create(mat->cols, mat->rows, nBPP);
  if(nBPP == 8)
  {
    static RGBQUAD pRGB[256];
    for (int i = 0; i < 256; i++)
        pRGB[i].rgbBlue = pRGB[i].rgbGreen = pRGB[i].rgbRed = i;
    img.SetColorTable(0, 256, pRGB);
  }
  uchar* psrc = mat->data;
  uchar* pdst = (uchar*) img.GetBits();
  int imgPitch = img.GetPitch();
  for(int y = 0; y < mat->rows; y++)
  {
    memcpy(pdst, psrc, mat->cols*mat->channels());//mat->step is incorrect for those images created by roi (sub-images!)
    psrc += mat->step;
    pdst += imgPitch;
  }

  return 0;
}