Juan Carlos Gómez

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A comprehensive system for facial animation of generic 3D head models driven by speech is presented in this article. In the training stage, audiovisual information is extracted from audiovisual training data, and then used to compute the parameters of a single joint audiovisual hidden Markov model (AV-HMM). In contrast to most of the methods in the(More)
Algorithms for 3D head pose and facial expression tracking using a single camera (monocular image sequences) is presented in this paper. The proposed method is based on a combination of feature-based and model-based approaches for pose estimation. A generic 3D face model, which can be adapted to any person, is used for the tracking. In contrast to other(More)
—One of the main challenges in off-line signature verification systems is to make them robust against rotation of the signatures. A new technique for rotation invariant feature extraction based on a circular grid is proposed in this paper. Graphometric features for the circular grid are defined by adapting similar features available for rectangular grids,(More)