Procedural Creation and Real-time Display of Realistic Complex Scenes

真实感图像合成的关键要素需要处理场景几何的表示、其单独/组合的纹理和反射特性以及发射光和入射光如何穿过场景。通常基于蒙特卡罗路径跟踪的高质量离线渲染很好地解决了相关问题，但代价是数千小时的计算和千兆字节的存储空间。然而，许多需要实时逼真显示的应用程序必须处理这些元素，并以不同的比例进行某种形式的预过滤。我们介绍了分层纹理/表面/体积的实时绘制方法。它们构建在常规壳映射和千兆像素的变体上，为对外观至关重要的视觉现象提供体积元素内的新的创新近似，同时保证每个像素或每个射线的一个结构查询。本研究计划深入研究这些表示方法，并将其与当今的GPU设施很好地集成在一起。这些方法和结构还与艺术家和科学家的直观控制相结合，以生成可信和连贯的复杂世界。

The key elements to realistic image synthesis need to handle the representation of scene geometry, its individual/combined textures and reflectance properties, and how emitted and incident light travels through it. High-quality offline rendering, often based on Monte Carlo Path Tracing, solves well the related problems, but at the cost of thousands of hours of computations and gigabytes of memory space. However, many applications requiring real-time realistic display must handle these elements all together with some form of pre-filtering appearances at different scales. We introduce hierarchical texture/surface/volume methods for real-time rendering. They are constructed on variations of regular shell maps and gigavoxels, providing new innovative approximations within volume elements to visual phenomena critical to appearance, while guaranteeing a one-structure query per pixel or per ray. This research program dives into these representations and integrates them well with today's GPU facilities. These methods and structures are also combined with intuitive controls for artists and scientists to generate credible and coherent complex worlds.