Non-photorealistic virtual environments

A. W. Klein, Wilmot Li, M. Kazhdan, W. Corrêa, Adam Finkelstein, T. Funkhouser
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引用次数: 114

Abstract

We describe a system for non-photorealistic rendering (NPR) of virtual environments. In real time, it synthesizes imagery of architectural interiors using stroke-based textures. We address the four main challenges of such a system — interactivity, visual detail, controlled stroke size, and frame-to-frame coherence — through image based rendering (IBR) methods. In a preprocessing stage, we capture photos of a real or synthetic environment, map the photos to a coarse model of the environment, and run a series of NPR filters to generate textures. At runtime, the system re-renders the NPR textures over the geometry of the coarse model, and it adds dark lines that emphasize creases and silhouettes. We provide a method for constructing non-photorealistic textures from photographs that largely avoids seams in the resulting imagery. We also offer a new construction, art-maps, to control stroke size across the images. Finally, we show a working system that provides an immersive experience rendered in a variety of NPR styles.
非真实感的虚拟环境
我们描述了一个虚拟环境的非真实感渲染系统。在实时情况下,它使用基于笔触的纹理合成建筑内部的图像。我们通过基于图像的渲染(IBR)方法解决了这样一个系统的四个主要挑战-交互性,视觉细节,控制笔画大小和帧到帧的一致性。在预处理阶段,我们捕获真实或合成环境的照片,将照片映射到环境的粗糙模型,并运行一系列NPR过滤器来生成纹理。在运行时,系统在粗糙模型的几何上重新渲染NPR纹理,并添加暗线来强调折痕和轮廓。我们提供了一种从照片中构造非真实感纹理的方法,该方法在很大程度上避免了生成图像中的接缝。我们还提供了一个新的结构,art-maps,来控制图像的笔画大小。最后,我们展示了一个工作系统,它提供了以各种NPR风格呈现的沉浸式体验。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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