Using SIFT (opencv) in unity,Is there anyway to use SIFT (openCV) in unity?

So since SIFT, SURF are nonfree modules, they are not implemented in opencv for unity. I was wondering if there is any other way to use them in unity, maybe another assets package, or writing a python script that is called in unity.,So since SIFT, SURF are nonfree modules, they are not implemented in openCV for Unity. I was wondering if there is any other way to use SIFT in unity, maybe another asset or calling a python script with SIFT in unity.