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ABSTRACT
We present a video-based interface that allows users of all skill levels to quickly create cutout-style animations by performing the character motions. The puppeteer first creates a cast of physical puppets using paper, markers and scissors. He then physically moves these puppets to tell a story. Using an inexpensive overhead camera our system tracks the motions of the puppets and renders them on a new background while removing the puppeteer's hands. Our system runs in real-time (at 30 fps) so that the puppeteer and the audience can immediately see the animation that is created. Our system also supports a variety of constraints and effects including articulated characters, multi-track animation, scene changes, camera controls, 2 1/2-D environments, shadows, and animation cycles. Users have evaluated our system both quantitatively and qualitatively: In tests of low-level dexterity, our system has similar accuracy to a mouse interface. For simple story telling, users prefer our system over either a mouse interface or traditional puppetry. We demonstrate that even first-time users, including an eleven-year-old, can use our system to quickly turn an original story idea into an animation.
REFERENCES
Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.
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1
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|
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2
|
|
| |
3
|
Alvarado, C., and Davis, R. 2001. Resolving Ambiguities to Create a Natural Sketch Based Interface. In Proc. IJCAI, 1365--1371.
|
| |
4
|
Baecker, R. 1969. Picture-Driven Animation. In Proc. Spring Joint Computer Conference, 273--288.
|
 |
5
|
|
| |
6
|
Collomosse, J., and Hall, P. 2005. Video Paintbox: The Fine Art of Video Painting. Computers & Graphics, Vol. 29, No. 6, 862--870.
|
| |
7
|
|
| |
8
|
James Davis , Maneesh Agrawala , Erika Chuang , Zoran Popović , David Salesin, A sketching interface for articulated figure animation, Proceedings of the 2003 ACM SIGGRAPH/Eurographics symposium on Computer animation, July 26-27, 2003, San Diego, California
|
 |
9
|
|
 |
10
|
|
| |
11
|
|
 |
12
|
|
| |
13
|
Horn, B. K. P. 1986. Closed-Form Solution of Absolute Orientation using Unit Quaternions. Journal of the Optical Society of America, Vol. 4, 629--642.
|
 |
14
|
|
 |
15
|
Hiroshi Ishii , Brygg Ullmer, Tangible bits: towards seamless interfaces between people, bits and atoms, Proceedings of the SIGCHI conference on Human factors in computing systems, p.234-241, March 22-27, 1997, Atlanta, Georgia, United States
[doi> 10.1145/258549.258715]
|
 |
16
|
|
| |
17
|
Brian Knep , Craig Hayes , Rick Sayre , Tom Williams, Dinosaur input device, Proceedings of the SIGCHI conference on Human factors in computing systems, p.304-309, May 07-11, 1995, Denver, Colorado, United States
[doi> 10.1145/223904.223943]
|
 |
18
|
|
 |
19
|
|
| |
20
|
|
| |
21
|
Milgram, P., and Kishino, F. 1994. A Taxonomy of Mixed Reality Visual Displays. IEICE Transactions on Information and Systems, Vol. 77, No. 12, 1321--1329.
|
| |
22
|
Moscovich, T., and Hughes, J. 2001. Animation Sketching: An Approach to Accessible Animation. Tech. Rep. CS04-03, Brown University CS Department.
|
| |
23
|
Oore, S., Terzopoulos, D., and Hinton, G. 2002. A Desktop Input Device and Interface for Interactive 3D Character Animation. Graphics Interface, Vol. 2, 133--140.
|
 |
24
|
|
 |
25
|
|
| |
26
|
|
| |
27
|
|
| |
28
|
Thomas, F., and Johnston, O. 1981. Disney Animation: The Illusion of Life. Walt Disney Productions, New York.
|
 |
29
|
|
| |
30
|
Tomasi, C., and Kanade, T. 1991. Detection and Tracking of Point Features. Tech. Rep. CMU-CS-91-132, Carnegie Mellon University, Pittsburgh, PA, USA.
|
| |
31
|
Trucco, E., and Plakas, K. 2006. Video Tracking: A Concise Survey. IEEE Journal of Oceanic Engineering, Vol. 31, No. 2, 520--529.
|
 |
32
|
|
 |
33
|
|
 |
34
|
|
 |
35
|
|
 |
36
|
|
 |
37
|
|
| |
38
|
Wisniewski, D., and Wisniewski, D. 1996. Worlds of Shadow: Teaching with Shadow Puppetry. Teacher Ideas Press.
|
|