gistfile1.cpp

template <typename I, typename O, typename Iterator>
inline void transform_image(
    const cv::Mat_<I>& input,
    cv::Mat_<O> *output,
    Iterator iterator) {
  if (input.size != output->size) {
    DR_LOGE("Dimensions of input and output images must be identical.");
    DR_LOGD("Skipping the rest.");
    return;
  }
  const int rows = input.rows;
  const int cols = input.cols;
  for (int y = 0; y < rows; ++y) {
    const I *in_row = input[y];
    O *out_row = (*output)[y];
    for (int x = 0; x < cols; ++x) {
      iterator(in_row[x], &out_row[x]);
    }
  }
}