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Towards next generation, Criminal activity in virtual worlds is becoming a major problem for law enforcement agencies. Virtual communities such as Second Life will be quickly becoming the next frontier of cybercrime. Mostly in the multimedia context, an avatar is the visual representation of the self in a virtual world. In this paper, the authors suggest how to extract a face from an image, modify it, characterize it in terms of high-level properties, and apply it to the creation of a personalized avatar. In this paper they tested, they implemented the algorithm on several hundred facial images, including many taken under uncontrolled acquisition conditions, and found to exhibit satisfactory performance for immediate practical use.
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