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 language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Pages | 37-48 |
| Number of pages | 12 |
| Volume | 2094 |
| DOIs | |
| Publication status | Published - 1993 |
| Externally published | Yes |
| Event | Visual Communications and Image Processing 1993 - Cambridge, MA, United States Duration: 1993 Nov 7 → 1993 Nov 7 |
Other
| Other | Visual Communications and Image Processing 1993 |
|---|---|
| Country | United States |
| City | Cambridge, MA |
| Period | 93/11/7 → 93/11/7 |
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ASJC Scopus subject areas
- Applied Mathematics
- Computer Science Applications
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
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 proceeding › Conference contribution
}
TY - GEN
T1 - Time-varying homotopy and the animation of facial expressions for 3d virtual space teleconferencing
AU - Kajiwara, Souichi
AU - T. Tanaka, Hiromi
AU - Kitamura, Yasuichi
AU - Ohya, Jun
AU - Kishino, Fumio
PY - 1993
Y1 - 1993
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=84892835916&partnerID=8YFLogxK
U2 - 10.1117/12.157967
DO - 10.1117/12.157967
M3 - Conference contribution
AN - SCOPUS:84892835916
VL - 2094
SP - 37
EP - 48
BT - Proceedings of SPIE - The International Society for Optical Engineering
ER -