José Mario De Martino

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User authentication is an important step to protect information and in this field face biometrics is advantageous. Face biometrics is natural, easy to use and less humaninvasive. Unfortunately, recent work has revealed that face biometrics is vulnerable to spoofing attacks using low-tech equipments. This article assesses how well existing face anti-spoofing(More)
User authentication is an important step to protect information and in this field face biometrics is advantageous. Face biometrics is natural, easy to use and less human-invasive. Unfortunately, recent work has revealed that face biometrics is vulnerable to spoofing attacks using low-tech cheap equipments. This article presents a countermeasure against such(More)
User authentication is an important step to protect information, and in this context, face biometrics is potentially advantageous. Face biometrics is natural, intuitive, easy to use, and less human-invasive. Unfortunately, recent work has revealed that face biometrics is vulnerable to spoofing attacks using cheap low-tech equipment. This paper introduces a(More)
This paper presents a novel approach for the generation of realistic speech synchronized 3D facial animation that copes with anticipatory and perseveratory coarticulation. The methodology is based on the measurement of 3D trajectories of fiduciary points marked on the face of a real speaker during the speech production of CVCV non-sense words. The(More)
Accessibility is a growing concern in several research areas. In computer science, programs that provide accessibility are those that enable people with disabilities to use computing resources efficiently. Since virtual environment relies primarily on the visual mode, usually using writing content, it may seem that access for deaf people is not an issue.(More)
In this paper, a reference model aiming to contribute to the discussion and formalization of the issues related to the integration of Computer Graphics (CG) , Image Processing (IP ) , and Computer Vision (CV) is proposed. This model takes into account that CG, IP, and CV are overlapping areas, and that CG and CV have inverse objectives. Regarding existing(More)
Skin wrinkles add realism and expressiveness to 3D facial animation. Modeling and animation of facial wrinkles have been challenging tasks due to the variety of conformations and details subtleness that wrinkles can exhibit. In this paper, we describe a method for real-time simulation of wrinkles taking advantage of the processing power of current GPUs. Our(More)