Proceedings of the 13th International Conference on Human-Computer Interaction. Part II: Novel Interaction Methods and Techniques
Hand shape estimation under complex backgrounds for sign language recognition
FGR' 04 Proceedings of the Sixth IEEE international conference on Automatic face and gesture recognition
Scatter search particle filter for 2d real-time hands and face tracking
ICIAP'05 Proceedings of the 13th international conference on Image Analysis and Processing
A Gestural Recognition Interface for Intelligent Wheelchair Users
International Journal of Sociotechnology and Knowledge Development
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Abstract: Work on real-time hand-gesture recognition for SAVI (Stereo Active Vision Interface) is presented. Based on the detection of frontal faces, image regions near the face are searched for the existence of skin-tone blobs. Each blob is evaluated to determine if it is a hand held in a standard pose. A verification algorithm based on the responses of elongated oriented filters is used to decide whether a hand is present or not. Once a hand is detected, gestures are given by varying the number of fingers visible. The hand is segmented using an algorithm which detects connected skin-tone blobs in the region of interest, and a medial axis transform (skeletonization) is applied. Analysis of the resulting skeleton allows detection of the number of fingers visible, thus determining the gesture. The skeletonization is sensitive to strong shadows which may alter the detected morphology of the hand. Experimental results are given indicating good performance of the algorithm.