Abstract: In blendshape-based facial animation, two main approaches are used to create the key expressions: manual sculpting and statistically-based techniques. Hand-generated expressions have the advantage of being intuitively recognizable, thus allowing animators to use conventional keyframe control. However, they may cover only a fraction of the expression space, resulting in large reproduction animation errors. On the other hand, statistically-based techniques produce eigenfaces that give minimal reproduction errors but are visually non-intuitive. In the invention the applicants propose a technique to convert a given set of hand-generated key expressions into another set of so-called quasi-eigen faces. The resulting expressions resemble the original hand-generated expressions, but have expression space coverages more like those of statistically generated expression bases. The effectiveness of the proposed technique is demonstrated by applying it to hand-generated expressions.

Abstract: The invention provides a teleconference method of sharing a working space between at least two terminals remotely interconnected through a communication network. The method includes the steps of: a) setting one of the terminals as a teleconference server terminal and the rest of terminals as client terminals; b) connecting the client terminals to the teleconference server terminal through the communication network; c) producing identifier mouse pointers by using identifiers of the participants and mouse pointer coordinates of the terminals at the teleconference server terminal; d) displaying the identifier mouse pointers on a screen of the teleconference server terminal; e) providing a shared window to each screen of the client terminals for displaying a clone of a screen of the teleconference server terminal; and f) at the teleconference server terminal, performing a mouse action based on a mouse event generated from each of the terminals.

Abstract: The present invention discloses an interactive presentation system which allows a presenter to perform a presentation while having various interactions directly with presentation material images in real time through a gesture or/and voice. The interactive presentation system comprises: an active infrared camera; a command recognition system connected to the active infrared camera; and an image synthesis system connected to the active infrared camera and the command recognition system. The presentation system may further comprises a stereo camera set for properly synthesizing a presenter in a 3D image and a 3D motion system. By this configuration, it is possible to embody an interactive presentation system in which a command through a presenter's gesture or voice is processed in real time and the image of the presenter is synthesized in a presentation material screen in real time, and accordingly the audiovisual effect is maximized.