Generating CG Animation of Natural Hand Motion in Playing a Piano

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  • Yamamoto Kazuki
    Graduate School of Information Science, Nara Institute of Science and Technology
  • Ueda Etsuko
    Department of Control Engineering, Nara National College of Technology
  • Suenaga Tsuyoshi
    Graduate School of Information Science, Nara Institute of Science and Technology
  • Takemura Kentaro
    Graduate School of Information Science, Nara Institute of Science and Technology
  • Takamatsu Jun
    Graduate School of Information Science, Nara Institute of Science and Technology
  • Ogasawara Tsukasa
    Graduate School of Information Science, Nara Institute of Science and Technology

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Other Title
  • ピアノ演奏における自然な手指動作CGの自動生成
  • ピアノ エンソウ ニ オケル シゼン ナ シュシ ドウサ CG ノ ジドウ セイセイ

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Abstract

In this paper, we propose a method for generating CG animation of natural hand motion in playing a piano from score data as input. This method employs inverse kinematics and key-frame technique to generate the animation. To achieve this purpose, we analyze actual piano-playing motion and extract the common features. We propose to calculate natural key poses by using a weighted pseudo inverse matrix and the canonical pose (pose in the rest) in the inverse kinematics. We also propose to use pre-keying motions as the key frames. We evaluate the generated piano-playing CG animation using the pair comparison method and verify its naturalness.

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