Hi everyone,
I need to swap bytes for depth images with OpenCV. I just found a hack way to swap bytes order for a cv::Mat, I wonder if there is a better solution. Actually I cannot find swapbyte method for opencv online.
Anyway, here is my implementation:
void swapbytes(cv::Mat& img)
{
int len_byte = img.elemSize();
// typedef char tmp_data_t[len_byte];
{
//the way to hack the opencv image data into the format we want
cv::Mat toswap(img.rows, img.cols, CV_8UC(len_byte), img.data);
int dtype = img.type();
cv::Mat merged;
std::vector<cv::Mat> channels(len_byte);
cv::split(toswap, channels);
std::reverse(channels.begin(), channels.end());
cv::merge(&channels[0], len_byte, merged);
merged.addref();
img = cv::Mat(toswap.rows, toswap.cols, dtype, merged.data);
std::cout << "here we do a small byte swap " << img.channels() << std::endl;
}
}