Computer-Generated Watercolor
Cassidy J. Curtis, Sean E. Anderson, Joshua E. Seims, Kurt W. Fleischer, David H. Salesin.
Proceedings of the 24th annual conference on Computer graphics and interactive techniques (SIGGRAPH'97), pp. 421--430, New York, NY, USA, ACM Press/Addison-Wesley Publishing Co.,
1997. [BibTeX]
Performance-Driven Hand-Drawn Animation
Author(s): Ian Buck, Adam Finkelstein, Charles Jacobs, Allison W. Klein, David H. Salesin, Joshua E. Seims, Richard Szeliski, Kentaro Toyama.
Proceedings: 1st International Symposium on Non-Photorealistic Animation and Rendering (NPAR'00), pp. 101--108, Annecy, France, June 05 - 07,
2000.
[BibTeX]
Abstract:
We present a novel method for generating performance-driven,
“hand-drawn” animation in real-time. Given an annotated set of
hand-drawn faces for various expressions, our algorithm performs
multi-way morphs to generate real-time animation that mimics the
expressions of a user. Our system consists of a vision-based tracking
component and a rendering component. Together, they form
an animation system that can be used in a variety of applications,
including teleconferencing, multi-user virtual worlds, compressed
instructional videos, and consumer-oriented animation kits.
This paper describes our algorithms in detail and illustrates the potential
for this work in a teleconferencing application. Experience
with our implementation suggests that there are several advantages
to our hand-drawn characters over other alternatives: (1) flexibility
of animation style; (2) increased compression of expression information;
and (3) masking of errors made by the face tracking system
that are distracting in photorealistic animations.
Putting the artist in the loop
Joshua E. Seims.
ACM SIGGRAPH Computer Graphics, Vol. 33, No. 1, pp. 52--53, February,
1999. [BibTeX]