Snakes: Active contour models
- M. Kass, A. Witkin, Demetri Terzopoulos
- PhysicsInternational Journal of Computer Vision
- 2004
This work uses snakes for interactive interpretation, in which user-imposed constraint forces guide the snake near features of interest, and uses scale-space continuation to enlarge the capture region surrounding a feature.
Large steps in cloth simulation
A cloth simulation system that can stably take large time steps is described, which is significantly faster than previous accounts of cloth simulation systems in the literature.
Scale-Space Filtering
- A. Witkin
- Computer ScienceInternational Joint Conference on Artificial…
- 1983
Uniqueness of the Gaussian Kernel for Scale-Space Filtering
- J. Babaud, A. Witkin, M. Baudin, R. Duda
- Computer ScienceIEEE Transactions on Pattern Analysis and Machine…
- 1986
It is shown that the Gaussian probability density function is the only kernel in a broad class for which first-order maxima and minima, respectively, increase and decrease when the bandwidth of the filter is increased.
Scale-space filtering: A new approach to multi-scale description
- A. Witkin
- Computer ScienceIEEE International Conference on Acoustics…
- 19 March 1984
Scale-space filtering is a method that describes signals qualitatively, managing the ambiguity of scale in an organized and natural way.
Spacetime constraints
This work presents as examples a Luxo lamp performing a variety of coordinated motions that conform to such principles of traditional animation as anticipation, squash-and-stretch, follow-through, and timing.
Variational surface modeling
- William Welch, A. Witkin
- MathematicsInternational Conference on Computer Graphics and…
- 1 July 1992
A new approach to interactive modeling of freeform surfaces that is that of an infinitely malleable surface, with no fixed controls, based on a surface representation scheme allowing nonuniform subdivision of B-spline surfaces.
Using particles to sample and control implicit surfaces
- A. Witkin, Paul S. Heckbert
- Materials ScienceInternational Conference on Computer Graphics and…
- 31 July 2005
By varying the radius of repulsion adaptively, and fissioning or killing particles based on the local density, this work can achieve good sampling distributions very rapidly, and maintain them even in the face of rapid and extreme deformations and changes in surface topology.
Motion warping
- A. Witkin, Zoran Popovic
- Computer ScienceInternational Conference on Computer Graphics and…
- 15 September 1995
It is shown that whole families of realistic motions can be derived from a single captured motion sequence using only a few keyframes to specify the motion warp.
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