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opencvimage-processinglibjpeg

Convert jpeg image mat to tiff

I'm using openCV and libjpeg is there a way to convert jpeg Black&white image to Tiff, I need to do so without saving the CV::mat to a file?

Thank's

Solution

  • You can use cv::imencode() to take a Mat and encode it into a vector of bytes:

    // bool imencode(const string& ext, InputArray img, vector<uchar>& buf, const vector<int>& params=vector<int>())¶

cv::Mat image = cv::imread("image.jpg");
std::vector<uchar> buf;
imencode(".tiff", image, buf);

    The TIFF encoded result is in buf.