Increased photorealism for interactive architectural walkthroughs
| Autor: | William Wynn, Anselmo Lastra, Kenneth E. Hoff, Rui Bastos |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Global illumination
Computer science business.industry Graphics hardware ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Rendering (computer graphics) Kernel (image processing) Computer graphics (images) Radiance Preprocessor Computer vision Bidirectional reflectance distribution function Artificial intelligence Image warping business ComputingMethodologies_COMPUTERGRAPHICS |
| Zdroj: | SI3D |
| DOI: | 10.1145/300523.300551 |
| Popis: | This paper presents a new method for interactive rendering of globally illuminated static scenes. Global illumination is decomposed into view-independent (diffuse) and view-dependent (non-diffuse) components. The two are recombined during rendering using a hybrid geometryand image-based approach along with multi-pass blending techniques. This approach allows the preprocessing of both components and the fast rendering of globally illuminated scenes. The view-independent component uses a traditional precomputed geometry-based radiosity solution that is rendered using standard graphics hardware. The view-dependent component is decomposed into “what is reflected” (radiance with depth) and “how it is reflected” (BRDF), and precomputed and rendered using image-based approaches. Radiance is stored as images with depth, and rendered using perspective reprojection; the BRDF is decomposed into an integration of incoming radiance and a directional modulation. The radiance integration term is approximated by convolving the reflected image with precomputed kernel textures based on material properties. The directional modulation is stored as a reflectance modulation texture based on material properties and is rendered using spheremapping during a blending pass. |
| Databáze: | OpenAIRE |
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