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Face detection is a basic task for expression recognition. The reliability of face detection & face recognition approach has a major role on the performance and usability of the entire system. There are several ways to undergo face detection & recognition. We can use Image Processing Operations, various classifiers, filters or virtual machines for the former. Various strategies are being available for Facial Expression Detection. The field of facial expression detection can have variousdoi:10.14445/22312803/ijctt-v7p143 fatcat:42xsi54xhrbixfkgfcnqxjisaa