which image format to use for face recognition software can you recognize faces using nmf? what is nmf used for what is nmf used for face recognition software what is nmf in face recognition when you use non negative matrix factorization why use nmf in face recognition what is the nmf matrix? why does nmf factorization help face recognition how many columns can be a vector image encoding what is nmf used for what is nmf for face recognition nmf for face recognition how to use nmf image how to implement face recognition using nmf how to use nmf for face recognition which algorithm can face recognition encoding be used? nmf face recognition software can you make face recognition software