Artistic Face Modeling and Facial Expression Design for Cartoon Characters Animation

卡通角色動畫臉部造型與表情的藝術設計

鐘世凱(Shih-Kai Chung)

《臺中教育大學學報：人文藝術類》 23卷2期 (2009/12) Pp. 175-201

https://doi.org/10.7037/JNTUHA.200912.0175

摘要

角色動畫既是輔助動畫師說故事的最佳工具，一直以來都是電腦動畫的熱門研究，而卡通角色因爲可以適時的誇張表演來強調角色的個性，更是動畫應用及研究的重心。生動的卡通角色動畫主要透過「肢體動作」與「臉部表情」來表現，其中尤以豐富多變的臉部表情最爲有經驗的動畫師所常用。
成功的卡通角色動畫有賴於動畫師對臉部表情的掌握控制，而如何設計卡通人物的臉部表情，在角色表演裡便相當重要，可惜的是相關的研究卻非常少見。本篇論文主要在探討電腦動畫卡通人物臉部的表情設計及相關動作的模擬，進而整理出一套普遍適用的角色臉部表情設計原則。文章首先簡述角色表情動畫的困難與現狀，繼而探討表情設計與動作表演控制的相關文獻，接著歸納提出適用的表情動畫設計原則，並逐項進行分析探討，最後總結臉部表情設計原則及模擬策略並提出未來的研究方向作爲本文的結論。

關鍵字

動畫準則 ； 角色動畫 ； 電腦動畫 ； 臉部表情 ； 動作控制

並列摘要

As the most important tool in helping the animator to do the storytelling, character animation has been always a popular study in Computer Graphics. Having the more luxury in exaggeration to act out the character's personality, cartoon characters, naturally, develops into the focus of research and applications in computer animation. Character performance includes ”body movements” and ”facial expressions”, in which the later are much more exuberant since they reveal characters' feelings and compassions, thus become the experienced animators' common tool in describing characters.
The success of cartoon character animation highly depends on the animation of facial expressions. Therefore, exquisite designing of facial expressions plays an important part of character animation. However, related published works are rare. This paper devotes on artistic facial expression design and implementation of 3D cartoon characters. The research goal of this study is set to develop the guidelines of designing for 3D character facial expressions. It first describes the problems and current status of facial animation. Then, after briefly reviewing the facial expression design and related animation techniques, the design guidelines of facial expression are suggested and discussed in details. At the end, the summary of facial expression design and the possible future study are offered as the conclusions.

並列關鍵字

Animation Principles ； Character Animation ； Computer Animation ； Facial Expression ； Motion Control