This paper examines the Asymmetric AdaBoost algorithm introduced by Viola and Jones for cascaded face detection. The Viola and Jones face detector uses cascaded classifiers to successively filter, or reject, non-faces. In this approach most non-faces are easily rejected by the earlier classifiers in the cascade, thus reducing the overall number of computations. This requires earlier cascade cla...

The first task to be carried out in an automatic surveillance system involves the detection of all the faces in the images taken by the video cameras. Current face detection algorithms are highly reliable and thus, they will not be the focus of our work. Some of the best performing examples are the Viola-Jones algorithm (Viola & Jones, 2004) or the Schneiderman-Kanade algorithm (Schneiderman & ...

"Fiddler's neck" is an irritant contact dermatitis that frequently affects violin and viola players. The etiology of the skin changes associated with this condition are probably attributable to a combination of factors--including increased pressure, friction, poor hygiene, and excessive perspiration. Clinically, the lesions generally consist of a localized area of lichenification on the left si...

In this report we summarise our experiments with ADABOOST and its application to the problem of face detection. As a starting point, the Viola-Jones face detector ([1]) is reimplemented and some details of the implementation are discussed. Next, modifications of both the training and detection procedure are reported. In the learning phase, tenfold decrease in training time, without noticeable r...

A trained cascade for face detection with a reduced number of Haar-like features should be computationally efficient. The accurate classical scheme for selecting these Haar-like features is proposed by Viola and Jones, but the training process may take weeks. Recently, there have been several heuristics reducing the training time in a dramatic way but the selected weak classifiers are not as go...

Brief history of the violin. The emergence of the violin in Upper Italy: The violin evolved from the viola da braccio family between 1520-1550, the Upper Italian towns of Milan, Brescia, Cremona and Venice being the most important centers. The term “violin” (from the Italian word violino) is derived from the word viola and had the general meaning “small stringed instrument” rather than “small v...