- How is face detection different than face recognition?
The objective of face detection is to locate human faces in an image. The output from the face detection process is a bounding box around detected faces. On the other hand, the objective of face recognition is to classify faces (that is, identify subjects). Face detection and face recognition are the two key steps in every facial recognition system, and the output from the face detection step is passed as input to the face recognition step.
- What is the Viola-Jones algorithm for face detection?
The Viola-Jones algorithm uses Haar features for face detection. Haar features are filters with alternating dark and bright areas that represents the contrast in pixel intensity in human faces. For example, the eye area in an image of a human face has a darker pixel value than the forehead and the cheeks areas. These...
