International Journal of Recent Technology and Engineering (IJRTE)
There are many challenges associated with face recognition systems which make them a complex and difficult process. These factors include - pose variations, facial expressions and occlusion, age etc. These factors affect the face recognition systems and deteriorate their accuracy. The face recognition problem can be solved by using some statistical techniques such as PCA, ICA and LDA. Some feature based techniques - Elastic Bunch Graph Matching (EBGM), Artificial Neural Network (ANN), etc. have also been used and implemented to solve the face recognition problem.