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We present a technique for estimating the location of the ball during a basketball game without using a detector. The technique is based on the analysis of the dynamics in the scene and allows us to overcome the challenges due to frequent occlusions of the ball and its similarity in appearance with the background. Based on the assumption that the ball is the point of focus of the game and that the...
We present a novel approach to 3D face recognition using compact face signatures based on automatically detected 3D landmarks. We represent the face geometry with inter-landmark distances within selected regions of interest to achieve robustness to expression variations. The inter-landmark distances are compressed through principal component analysis and linear discriminant analysis is then applied...
We present an algorithm for ranking videos from multi-camera settings. The algorithm is based on the analysis of objects and events associated to them. Object analysis uses multiple features and is based on motion segmentation using color-based change detection and then trajectories for each target are generated using multi-frame graph matching. Event detection employs a hidden semi-Markov model with...
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