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Proceedings Paper

Time-varying homotopy and the animation of facial expressions for 3D virtual space teleconferencing
Author(s): Souichi Kajiwara; Hiromi T. Tanaka; Yasuichi Kitamura; Jun Ohya; Fumio Kishino
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Paper Abstract

A homotopy describes the transformation of one arbitrary curve into another that shares the same endpoints. In this paper, we propose a deformable cylinder model, based on homotopy, in which an arbitrary surface interpolated between two contours via a blending function is transformed into another surface over time. We then show how this homotopic deformation can be applied to the realistic animation of human faces in a virtual space teleconferencing system. Specifically, we show that facial expressions such as wrinkling of the forehead and opening and closing of the mouth can be synthesized and animated in real time through 3D homotopic deformations.

Paper Details

Date Published: 22 October 1993
PDF: 12 pages
Proc. SPIE 2094, Visual Communications and Image Processing '93, (22 October 1993); doi: 10.1117/12.157967
Show Author Affiliations
Souichi Kajiwara, ATR Communication Systems Research Labs. (Japan)
Hiromi T. Tanaka, ATR Communication Systems Research Labs. (Japan)
Yasuichi Kitamura, ATR Communication Systems Research Labs. (Japan)
Jun Ohya, ATR Communication Systems Research Labs. (Japan)
Fumio Kishino, ATR Communication Systems Research Labs. (Japan)


Published in SPIE Proceedings Vol. 2094:
Visual Communications and Image Processing '93
Barry G. Haskell; Hsueh-Ming Hang, Editor(s)

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