extract dlib feature vectors from given directory of images and save as numpy.
file paths: text file.
given a list of directories, recursively go into each and extract all features and save as numpy array of relative image paths and a single feature vector matrix.
Copyright (C) 2019 Kyaw Kyaw Htike @ Ali Abdul Ghafur. All rights reserved.
Dr. Kyaw Kyaw Htike @ Ali Abdul Ghafur