Efficient Face Detection Algorithm using Viola Jones method – CodeProject
Paul Viola and Michael Jones presented a fast and robust method for face detection which is 15 times quicker than any technique at the time of release with 95% accuracy at around 17 fps. Viola Jones Faces
The technique relies on the use of simple Haar-like features that are evaluated quickly through the use of a new image representation. Based on the concept of an “Integral Image” it generates a large set of features and uses the boosting algorithm AdaBoost to reduce the over-complete set and the introduction of a degenerative tree of the boosted classifiers provides for robust and fast interferences. The detector is applied in a scanning fashion and used on gray-scale images, the scanned window that is applied can also be scaled, as well as the features evaluated.