Dear Sir,
Iam expert in python, Matlab and CNN using keras and scikit-learn but i think using one image and compare other images with won.t get good results if a different picture to the same user is compared as it may get it wrong so i think we should use many pictures to the face we want to compare with.
Hint: in pyhton will be much easier.
Have a good day
Best Regards
Hany Aly