Procedural Creation and Real-time Display of Realistic Complex Scenes

真实感图像合成的关键元素需要处理场景几何体的表示、其单个/组合纹理和反射属性，以及发射和入射光线如何通过它。高质量的脱机渲染通常基于蒙特卡罗路径跟踪，很好地解决了相关问题，但代价是数千小时的计算和GB的内存空间。然而，许多需要实时逼真显示的应用程序必须将这些元素与某种形式的不同比例的预过滤外观一起处理。我们引入了分层的纹理/曲面/体积方法来实现实时绘制。它们构建在常规壳贴图和千兆像素的变体上，在体积元素内提供了对外观至关重要的视觉现象的新的创新近似，同时保证了每像素或每条光线的单一结构查询。这项研究计划深入研究这些表示法，并将它们与当今的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.