December 2018
Intermediate to advanced
280 pages
7h 23m
English
Content preview from Mastering OpenCV 4 - Third Edition
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Introduction to face detection and face recognition
Face recognition is the process of putting a label to a known face. Just like humans learn to recognize their family, friends, and celebrities just by seeing their face, there are many techniques for recognize a face in computer vision.
These generally involve four main steps, defined as follows:
- Face detection: This is the process of locating a face region in an image (the large rectangle near the center of the following screenshot). This step does not care who the person is, just that it is a human face.
- Face preprocessing: This is the process of adjusting the face image to look clearer and similar to other faces (a small grayscale face in the top center of the following screenshot). ...
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