Art and anatomy based techniques for interactive character modeling and animation

基于艺术和解剖学的交互式角色建模和动画技术

• 批准号: 250321-2006
• 负责人: Singh, Karan
• 金额: $ 2.19万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=394755
• 关键词: Art; anatomy; based; techniques; interactive

Character modeling and animation has limitless possibilities with important applications in medicine, education, training, telecommunication, ergonomics, human computer interaction and last but not least entertainment. Current animation techniques, however, are suboptimal for animators, clinicians and users in general since they are driven by the mathematics of digital geometry and the physics of motion rather than an understanding of anatomy, aesthetics and the specific interactive skills of the users. This project will explore techniques for interactive character modeling, animation and reuse based on foundations of anatomy, aesthetics, timing and leveraging their specific user skillsets towards the modeling and animation of digital characters. The state of the art in the computer representation of a character resembles a marionette, allowing an animator to emote through puppet-like controls on the character rig. Rigging a character is a complex process and anatomic approaches to character and facial rigging have shown promise for character reuse and in capturing subtleties in animation that are difficult to capture with other techniques, that this project hopes to explore. The bigger challenge is controlling the animation of a rigged character, where we hope to devise techniques driven by the high level manner in which directors would interact with and specify the motion of actors. The complexity of motion and gestures of the hand makes it not only a challenging animation problem but a pervasive part of human function, communication and aesthetics. Repetitive strain injuries, which are hard to diagnose early, greatly impair productivity in the workplace. The development of an anatomically accurate computational model of the hand is an important part of this project. The end goal of the anatomic hand model is to capture the functional relationship between numerical inputs to the muscle actuation sites (conceptually equivalent to contraction impulses) and the motion of the skeletal joints of the hand. The mapping will be both forward, where impulse values can be mapped to a resulting joint motion, and inverse, where we compute the many possible contraction impulses in various muscle combinations that produce some given motion of the joints. Such a mapping for a specific patient can be a valuable motion analysis tool in a clinical setting as well as a tool for the creation and validation of realistic hand animation.

角色建模和动画具有无限的可能性，在医学，教育，培训，电信，人体工程学，人机交互以及最后但并非最不重要的娱乐方面具有重要的应用。然而，当前的动画技术对于动画师、临床医生和一般用户来说是次优的，因为它们是由数字几何的数学和运动的物理学驱动的，而不是由对解剖学、美学和用户的特定交互技能的理解驱动的。该项目将探索基于解剖学，美学，计时和利用其特定用户技能的基础上的交互式角色建模，动画和重用技术，以实现数字角色的建模和动画。在计算机中，角色的表现形式类似于牵线木偶，动画师可以通过角色装备上类似木偶的控件来表达情感。操纵一个角色是一个复杂的过程，角色和面部操纵的解剖方法已经显示出对角色重用和捕捉动画中难以用其他技术捕捉的微妙之处的承诺，本项目希望探索。更大的挑战是控制操纵角色的动画，我们希望设计出由导演与演员互动并指定演员动作的高水平方式驱动的技术。手的运动和手势的复杂性使其不仅是一个具有挑战性的动画问题，但人类功能，沟通和美学的一个普遍的一部分。很难早期诊断的重复性劳损极大地损害了工作场所的生产力。开发一个解剖学上精确的手的计算模型是这个项目的重要组成部分。解剖手模型的最终目标是捕获肌肉致动部位（概念上等同于收缩脉冲）的数值输入与手的骨骼关节的运动之间的函数关系。映射将是正向的，其中脉冲值可以映射到产生的关节运动，以及反向的，其中我们计算各种肌肉组合中的许多可能的收缩脉冲，这些肌肉组合产生关节的某些给定运动。针对特定患者的这种映射可以是临床环境中有价值的运动分析工具以及用于创建和验证逼真手部动画的工具。