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Is there a way to display cv::Mat using __android_log_print()

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I know you can display a cv::Mat using cout << Mat << endl; But I am examing this on a android phone it can't handle cout; So is there a established way to send it through __android_log_print()? which is pretty much the same as printf(). Or do I need to write my own customised version of std::String Mat_to_Sting(cv::Mat)?

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