【作者】 夏旺盛；

【导师】 黄心渊；

【作者基本信息】 北方工业大学 ， 计算机应用技术， 2003， 硕士

【摘要】 我们的课题涉及的是三维动画绘制技术的研究。动画的绘制技术可以分为两类：真实感绘制和非真实感绘制。真实感绘制技术已经有了很长的历史，而非真实感绘制技术则是国际上近几年在计算机图形图象领域新兴的一个研究课题。非真实感绘制以真实感绘制为基础，它可以使绘制的图象具有卡通效果以及某种艺术性效果。轮廓线是三维模型的一个重要特征，体现了模型的大致形状和轮廓。因此，三维模型的轮廓线探测技术是非真实感绘制的基础，而且我们还能利用它生成线条画效果。卡通效果绘制也属于非真实感绘制的范围，现在大量应用于电视动画片、动画电影以及游戏开发等领域中。 本文的工作内容主要集中在以下方面，包括： 1 完善并实现Phong光照模型算法 在研究了多个光照模型算法的基础上，我们选择了Phong模型作为具体完善和实现的对象，取得了较好的真实感效果。 2 利用Phong模型生成三维卡通风格的非真实感绘制 我们通改进上面经过完善的Phong模型，利用编写的新材质可以在三维场景中直接绘制出具有卡通色彩的图象。 3 三维模型的轮廓线绘制技术 我们在理论上和实际中对各种轮廓线算法进行了研究和比较，用VC开发了绘制轮廓线的程序，并在MAYA中使用了一种新的绘制模型轮廓线的技术。 4 群体动画的模拟 由于整个项目的需要，我们还研究和实现了三维场景中群体行为控制的一些模型和算法，并对它进行了模拟。 在本文的最后对所做工作进行了总结，并讨论将来可能继续的研究方向。更多还原

【Abstract】 The research we are involved in is rendering technology in three-dimensional animation. The animation rendering technology can be approximately divided into two categories: photorealistic rendering technology and non-photorealistic rendering (NPR) technology. It is a long time to development for photorealistic rendering technology, but the NPR technology is a new research domain in the world for computer graphics and image field in recently years. The NPR is based on photorealistic rendering technology, and it can render 3D graphics to cartoon style image and a certain artistic image. The silhouette edges are importment characteristic for three-dimensional model and represent the approximate model’s shape. So, the technology of detecting 3D model silhouette is foundation information for NPR. It also render the 3D model to a line style image. The rendering technology of cartoon style belongs to NPR’s field, and it is to be widely applied in animation telefile and movie area and development games.In this thesis, our research work mainly focuses on the following aspects, including:1 Perfecting and implement the algorithm of phong illumination modelAfter we research some illumintion models, we perfect and implement the phong illumination model and gain a nice photorealistic effect.2 Generating the NPR for the three-dimensional cartoon style using the Perfected phong illumination modelWe ameliorate the perfected phong illumination model and generate the new material that derectly rendering a chromatic cartoon image in a three-dimensional scene.3 The silhouette rendering technology for 3D modelWe have researched and compared these silhouette rendering algorithms that based on the theory and practice, developing the program of rendering silhouette using VC, and find anew method for rendering the 3D model’s silhouette in MAYA. 4 The silumation for crowd animationWe also research and implement the algorithm and model for crowd behavior steering in 3D scene because of the whole project requiring, and silumate it later.At last, I summarize the work of this thesis and discuss the potential research topics in the future.更多还原