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Journal for Geometry and Graphics 08 (2004), No. 1, 081--090
Copyright Heldermann Verlag 2004

Keyframes Extraction Method for Motion Capture Data

Kunio Kondo
Dept. of Information and Computer Sciences, Saitama University, Saitama 338-8570, Japan

Koichi Matsuda
Iwate Prefectural University, 152-52 Sugo Takizawa-mura, Iwate-ken, Japan

We propose a keyframes extraction method of motion capture data for reducing data quantity. To choose keyframes from motion capture data, we apply a refinement technique for handwritten curves to the data. As a result of comparing original data with reduced data, it is confirmed that the path of each data is nearly equal. Features of our method are:
(1) data reduction that utilizes characteristics of the measured motion is possible, and
(2) the user can control the ratio of reduction. It became possible that the data quantity is kept to about 50%, while features of the original motion are retained.

Keywords: Computer animation, motion capture data, keyframe.

MSC: 68U05

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