Time-varying homotopy and the animation of facial expressions for 3d virtual space teleconferencing

Souichi Kajiwara, Hiromi T. Tanaka, Yasuichi Kitamura, Jun Ohya, Fumio Kishino

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages37-48
Number of pages12
Volume2094
DOIs
Publication statusPublished - 1993
Externally publishedYes
EventVisual Communications and Image Processing 1993 - Cambridge, MA, United States
Duration: 1993 Nov 71993 Nov 7

Other

OtherVisual Communications and Image Processing 1993
CountryUnited States
CityCambridge, MA
Period93/11/793/11/7

Fingerprint

teleconferencing
Teleconferencing
animation
Facial Expression
Animation
Homotopy
Time-varying
forehead
Wrinkling
wrinkling
mouth
Arbitrary
closing
Face
Model-based
Curve
curves

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kajiwara, S., T. Tanaka, H., Kitamura, Y., Ohya, J., & Kishino, F. (1993). Time-varying homotopy and the animation of facial expressions for 3d virtual space teleconferencing. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 2094, pp. 37-48) https://doi.org/10.1117/12.157967

Time-varying homotopy and the animation of facial expressions for 3d virtual space teleconferencing. / Kajiwara, Souichi; T. Tanaka, Hiromi; Kitamura, Yasuichi; Ohya, Jun; Kishino, Fumio.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2094 1993. p. 37-48.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kajiwara, S, T. Tanaka, H, Kitamura, Y, Ohya, J & Kishino, F 1993, Time-varying homotopy and the animation of facial expressions for 3d virtual space teleconferencing. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 2094, pp. 37-48, Visual Communications and Image Processing 1993, Cambridge, MA, United States, 93/11/7. https://doi.org/10.1117/12.157967
Kajiwara S, T. Tanaka H, Kitamura Y, Ohya J, Kishino F. Time-varying homotopy and the animation of facial expressions for 3d virtual space teleconferencing. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2094. 1993. p. 37-48 https://doi.org/10.1117/12.157967
Kajiwara, Souichi ; T. Tanaka, Hiromi ; Kitamura, Yasuichi ; Ohya, Jun ; Kishino, Fumio. / Time-varying homotopy and the animation of facial expressions for 3d virtual space teleconferencing. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2094 1993. pp. 37-48
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