基于人体模型模型的三维角色控制---毕业论文.doc

摘 要 近年来，虚拟人的行为再现技术成为研究热点之一，无论是在许多涉及到人类自身的应用研究上（例如载人航天、多兵种军事训练与演练、医疗手术的模拟与训练等），还是在三维游戏、计算机动画、影视制作等领域，都迫切需要实现对人类外观和动作行为的模拟仿真。因为人物运动的复杂性，无论是在人体建模和底层动作控制技术上还是在高层行为控制技术上，都存在着许多技术难题。 本文讨论研究了产生逼真人物行为动画时会遇到的问题及解决方案。将由三维模型软件制作导出的模型文件和由动作捕捉设备导出的骨骼动作文件作为输入，输出为模型动画再现。 首先，分析了3ds格式的三维模型文件内容，及如何对再现的模型进行全方位观察。其次，分析了bvh格式的骨骼动作文件内容，再现了文件中所包含的骨架信息和运动信息，形成骨骼动画。然后，将运动数据和建模得到的人体模型相结合，产生实时人体骨骼蒙皮动画。并对多种骨骼皮肤绑定技术进行介绍分析，提出了一个比较完整的骨骼皮肤绑定流程，并选择实现骨骼皮肤点绑定算法。 最终实现了一个基于OpenGL图形库与MFC程序框架的系统，对三维模型文件和骨骼动作文件进行再现，并将模型和骨骼进行匹配，获得骨骼驱动模型生成动画的效果。 关键字：三维模型；运动控制；骨骼蒙皮； Abstract The reproduction of a virtual human’s behavior technology has become one of the hot research topics in recent years. The simulation of human looks and actions is in a pressing need whether in the research involving human being itself, such as manned space flight, arms’ military training and exercises, the simulation and training of surgical operations, etc, or in the fields of three-dimensional games, computer animation, film and television production. Because of the complexity of human motions, there are many technical problems whether in the modeling of human and human motion controlling technology and high-level behavior control technology. This article discusses the problems and solutions might be encountered in the research of generating realistic animated figures behavior. The input is the model file produced by three-dimensional modeling software and the skeleton file exported by motion capture equipment, and the output is a model animation. First of all, we analysis the content of three-dimensional model 3ds format file and how to provide a all-round observation of reproduced model file. Secondly, we analysis the content of skeleton file in bvh format, which reproduces the skeleton information and motion information contained in the file, forming a skeleton animation. Then, we combine motion data and model of human body, and produce a real-time skinned skeleton animation. We analysis many kinds of skin and skeleton binding tech