肢體動作所產生肌肉形變之合成

Abstract

本論文主要針對因肢體動作而產生的肌肉形變，提出一個新的肌肉形變合成方法。先利用骨骼子空間的形變（Skeletal Subspace Deformation），來控制整體人體的形變；接下來再針對身體上特定部位，作進一步地細緻化修改。當人體手臂的上臂以及下臂間的夾角越來越小時，此時肌肉會收縮，更進一步的二頭肌會很明顯的產生出肌肉膨脹的效果，因此我們根據上下臂間的夾角，以高斯函數（Gaussian Function）來合成不同程度肌肉膨脹的效果。本方法與骨骼子空間的形變相比，在些微的速度損失下，提升了肌肉形變的程度，產生更加逼真的效果。

This thesis proposes a new method of the deformation of body motion. Firstly, our work uses the Skeletal Subspace Deformation according to the skeleton to control the deformation of the human body. Secondly, we further modify the deformations at some specific muscles. When the angle of the upper arm and the lower arm reduce, the muscle will twist, and then the muscle bugle effect of the biceps will become more obvious. Consequently, we consider the angle of the upper arm and the lower arm, Gaussian function is applied to synthesis the effect of muscle bugles. Comparing to Skeletal Subspace Deformation, this method increases the degrees of the deformation of the muscle with slight loss of speed.