OpenCV中Mat对象转CImage的函数

void MatToCImage( Mat &mat, CImage &cImage)  {      //create new CImage      int width    = mat.cols;      int height   = mat.rows;      int channels = mat.channels();      cImage.Destroy(); //clear      cImage.Create(width, height,8*channels ); //默认图像像素单通道占用1个字节      //copy values      uchar* ps;      uchar* pimg = (uchar*)cImage.GetBits(); //A pointer to the bitmap buffer      int step = cImage.GetPitch();      for (int i = 0; i < height; ++i)      {          ps = (mat.ptr<uchar>(i));          for ( int j = 0; j < width; ++j )          {              if ( channels == 1 ) //gray              {                  *(pimg + i*step + j) = ps[j];              }              else if ( channels == 3 ) //color              {                  for (int k = 0 ; k < 3; ++k )                  {                      *(pimg + i*step + j*3 + k ) = ps[j*3 + k];                  }                         }          }         }  }