OCR [Optical Character Recognition], also known as text recognition, extracts text from an image, video or document and may include handwriting, licence plates or documents of various kinds.
Bio metrics is used as a form of identification and access control. The bio metrics technology is used to measure and analyze physical characteristics such as fingerprints, iris scan to name a few.
Face recognition system is a technology capable of verifying or identifying a person from a digital image, a video frame from a video source.