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Real-time global illumination in VR systems enhances scene realism by incorporating soft shadows, reflections of objects in the scene, and color bleeding. The virtual light field (VLF) method enables real-time global illumination rendering in VR. The VLF has been integrated with the extreme VR system for real-time GPU-based rendering in a cave automatic virtual environment.
This paper presents a type of visibility data structure for accelerated ray tracing. The visibility field is constructed by choosing a regular point subdivision over a hemisphere to obtain a set of directions. Corresponding to each direction there is then a rectangular grid of parallel beams, with each beam referencing a set of identifiers corresponding to objects that intersect it. Objects lying...
This paper describes an algorithm that provides real-time walkthrough for globally illuminated scenes that contain mixtures of ideal diffuse and specular surfaces. A type of light field data structure is used for propagating radiance outward from light emitters through the scene, accounting for any kind of L(S\D)* light path. The light field employed is constructed by choosing a regular point subdivision...
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