Fast, Realistic Image Synthesis

这个项目的目标是使用多分辨率建模技术加速三维表面模型的渲染。多分辨率建模是在多个细节层次上描述形状。在传统的图像合成中，对象是由相同的几何模型呈现的，与屏幕大小无关，但对于小而远的对象来说，这是不必要的缓慢。在多分辨率模型中，附近的物体使用详细模型进行渲染，而远处的物体使用使用较少多边形的粗糙模型进行渲染。迄今为止，多分辨率模型的创建主要是手工的。新的算法将被开发来自适应地简化多边形表面模型，试图用尽可能少的多边形找到表面的精确近似值，并尽可能快地做到这一点。将开发用于平滑细节层次之间过渡的方法。生成的图像应该与完全详细的模型渲染的场景难以区分。多分辨率模型可以加速许多应用，包括飞行和驾驶模拟、计算机辅助设计、可视化、视频游戏、虚拟现实和计算机动画。它们可以实时渲染非常复杂的场景。

The goal of this project is to accelerate the rendering of three dimensional surface models using multiresolution modeling techniques. Multiresolution modeling is the description of shape at multiple levels of detail. In conventional image synthesis, an object is rendered from the same geometric model independent of its screen size, but this is unnecessarily slow for small and distant objects. With multiresolution models, nearby objects are rendered using a detailed model, while distant objects are rendered using a coarse model employing many fewer polygons. To date, the creation of multiresolution models has been largely manual. New algorithms will be developed to adaptively simplify polygonal surface models, attempting to find an accurate approximation to the surface using as few polygons as possible, and to do this as quickly as possible. Methods for smoothing the transitions between levels of detail will be developed. The resulting image should be indistinguishable from a scene rendered from a fully detailed model. Multiresolution models can speed up a number of applications, including flight and driving simulation, computer aided design, visualization, video games, virtual reality, and computer animation. They can allow scenes of great complexity to be rendered in real time.