人類面部表情控制之有限元素分析

Abstract

本論文採用有限元素法，分析肌肉施力控制變形的情形，再以變形的結果呈現面部表情的變化。論文中採用DKT與CST有限元素的組合來做為網格結構分析的基礎，使每個節點有六個自由度，並以此來處理變形問題。除此之外，這裡也討論關於電腦繪圖所需的知識，以及人類臉部肌肉的分布與其對應功能，並在之後介紹實作的結果。 而本論文的主要目的，是在於希望藉由目前實作的結果，提供後人在做更精緻的模擬時的一些方向，或者當要為機器人加入臉部表情變化時，提供一些參考的施力值與施力比例。

In this paper, we analyze the human facial deformation due to applied muscle force by the finite element method. We take the results of the deformation to control facial expressions. There are six degrees of freedom on each node of the finite element composed of DKT and CST. Besides, we discuss the knowledge about computer graphics and the muscle distributions of human face and their functions. We present the results of our experiment in color pictures with contrast of the expressions before and after the force application. The major purpose of this paper is that we hope to offer later generations some directions of making some better simulations by the results of our experimentation. Or we can offer some applying information when we want to add some facial expressions for robots.