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Untangling cloth. (simulation).(Brief Article)
One of the biggest snags in computer animation has been to simulate how clothing bunches up and then relaxes again, as when a character's elbow bends or arm moves across the front of the body. The problem with conventional cloth-simulation techniques is that during such motions, fabric becomes sandwiched in areas where it intersects with the body and itself, and it gets pulled, stretched, and tangled. As a result, it can flutter, wiggle, and appear jagged. And then, when the body parts separate, it can remain pinched and tangled instead of falling loosely and naturally back to its original shape.
To avoid these problems, David Baraff, Andrew Witkin, and Michael Kass of Pixar Animation Studios have devised two cloth-collision algorithms described last month at SIGGRAPH in a paper titled "Untangling Cloth." The first is called collision ...
- Recipes for artificial realities: intriguing images emerge from a blend of...
- Magazine article from: Science News Peterson, Ivars November 24, 1990 700+ words
...an artist typically draws a sequence of images, changing the positions of objects frame by frame. But computer scientist David Baraff, a graduate student at Cornell University in Ithaca, N.Y., takes a different approach. In his visual simulations of...
- Pixar draws academy kudos.(Academy of Motion Picture Arts and Sciences)
- Magazine article from: Daily Variety Cohen, David S. February 21, 2006 700+ words
...30 years ago," before Pixar itself existed. Of the 13 honorees receiving Scientific & Engineering Award plaques, David Baraff, Michael Kass and Andrew Witkin received kudos for their work at Pixar on the mathematics used for realistic rendering of...
- Other Oscars.
- Magazine article from: Daily Variety February 22, 2006 700+ words
...motion picture industry across multiple disciplines, especially computer graphics Scientific & Engineering Awards David Baraff, Michael Kass and Andy Witkin, for their pioneering work in physically based computer-generated techniques used to simulate...
- Calculating cartoons: physics simulations create convincing illusions in films...
- Magazine article from: Science News Weiss, Peter Ulrich January 26, 2002 700+ words
...clothing on some characters into an unrecognizable tangle. "We had days when we doubted if this could be solved," recalls David Baraff of Pixar. Baraff, who was a professor of robotics at Carnegie Mellon University in Pittsburgh before making the switch...
- And The Sci-Tech Oscar Goes To... The awards for the other people in Hollywood...
- Magazine article from: Popular Science Trolio, Jen March 1, 2006 700+ words
...before. CREDITS The Lord of the Rings trilogy, Spider-Man, thousands of other films CLOTH SIMULATION FOR FILM WINNERS David Baraff, Michael Kass, Andy Witkin, Pixar Animation Studios USES Pixar's software plugs scene-specific physical data about...
- Two Oakland, Calif.-Area Companies Work to Create Digital Actors.
- Newspaper article from: Knight Ridder/Tribune Business News Avalos, George August 27, 1999 700+ words
...movies are made in the future. "If you want to have real digital stand-ins, you need this kind of technology," said David Baraff, an animator with Pixar. "There will be realistic, completely digital characters that stand in for live people." Pixar...
