Research on Reproducing Behaviors of Non-rigid Objects Present in Real Space in Virtual 3D Space

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As the non-rigid objects in the research on reproducing behaviors of non-rigid objects present in real space in virtual 3D space, (1) human images, and (2) elastic objects are studied as described in the following.(1) Human ImagesTo improve the quality of reproducing the facial expressions and face movements of the person, whose face is observed by a camera, in the 3D face model placed in the virtual space, a method that extracts the facial texture from each frame in the video sequence acquired by the above-mentioned camera, applies Affine transform to the extracted texture based on the detected facial position and pose, and then maps the transformed texture onto the face model is proposed and studied. As a result, it turns out that the elements such as wrinkles, eyes and mouth, which are difficult to be animated realistically simply by deforming the face model, can be reproduced with high quality.Another methods that represent human faces realistically include the caricatured portrait … More . Till now, caricatured portraits have been drawn by caricature portrait writers, but if computers can generate caricatured portraits automatically, realistic reproductions of faces can be expected to be achieved. Relationship between optimal deformations and the results of the shape measurement of facial contour, eyes and mouth was studied.Concerning the entire human body, methods for recognizing human motions in real space by computer vision methods were studied. More specifically, a method for recognizing the motions of an unknown person, who is not included in the database for the recognition process, and a method for recognizing human actions interacting with the surroundings were researched.(2) Elastic objectsIn order to represent large-scale deformations of 3D virtual elastic objects in a stable manner in real-time, an articulated elastic object model that connects multiple elastic object primitives through joint surfaces is proposed. A method based on Boundary Element Method can represent large-scale deformations of elastic objects with complicated shapes in a stable manner in real-time. Less