message: add if block for indexed color images
diff: @@ -112,6 +112,21 @@ void UIImageToMat(const UIImage* image,
  m.step[0], colorSpace,
  bitmapInfo);
  }
  + else if (CGColorSpaceGetModel(colorSpace) == kCGColorSpaceModelIndexed)
  + {
  + // CGBitmapContextCreate() does not support indexed color spaces.
  + colorSpace = CGColorSpaceCreateDeviceRGB();
  + m.create(rows, cols, CV_8UC4); // 8 bits per component, 4 channels
  + if (!alphaExist)
  + bitmapInfo = kCGImageAlphaNoneSkipLast |
  + kCGBitmapByteOrderDefault;
  + else
  + m = cv::Scalar(0);
  + contextRef = CGBitmapContextCreate(m.data, m.cols, m.rows, 8,
  + m.step[0], colorSpace,
  + bitmapInfo);
  + CGColorSpaceRelease(colorSpace);
  + }
  else
  {
  m.create(rows, cols, CV_8UC4); // 8 bits per component, 4 channels
  