Guided Time Warping for Motion Editing
Name
gtw-sca2007.mp4
Size
22.74 MB
Format
Unknown
Checksum (MD5)
241b7d5b26903dee2e2c9d2c8805c7e9
Author(s)
Hsu, Eugene
Silva, Marco da
Popovic, Jovan
Date Issued
August 1, 2007
Citation
In ACM SIGGRAPH/Eurographics Symposium on Computer Animation, pages 45-52, July 2007.
Series/Report no.
Massachusetts Institute of Technology Computer Science and Artificial Intelligence Laboratory
Abstract
Time warping allows users to modify timing without affecting poses. It has many applications in animation systems for motion editing, such as refining motions to meet new timing constraints or modifying the acting of animated characters. However, time warping typically requires many manual adjustments to achieve the desired results. We present a technique which simplifies this process by allowing time warps to be guided by a provided reference motion. Given few timing constraints, it computes a warp that both satisfies these constraints and maximizes local timing similarities to the reference. The algorithm is fast enough to incorporate into standard animation workflows. We apply the technique to two common tasks: preserving the natural timing of motions under new time constraints and modifying the timing of motions for stylistic effects.
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