Photorealistic rendering for Augmented Reality: A global illumination and BRDF solution
| Autor: | Saulo A. Pessoa, João Paulo Lima, Guilherme de S. Moura, Veronica Teichrieb, Judith Kelner |
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| Rok vydání: | 2010 |
| Předmět: |
Global illumination
business.industry Computer science ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Virtual reality Rendering (computer graphics) Computer graphics Image-based lighting Virtual image Computer graphics (images) Color bleeding Augmented reality Computer vision Shading Artificial intelligence Specular reflection Bidirectional reflectance distribution function business Shadow mapping ComputingMethodologies_COMPUTERGRAPHICS |
| Zdroj: | VR |
| DOI: | 10.1109/vr.2010.5444836 |
| Popis: | This paper presents a solution for the photorealistic rendering of synthetic objects into dynamic real scenes, in Augmented Reality applications. In order to achieve this goal, an Image Based Lighting approach is used, where environment maps with different levels of glossiness are generated for each virtual object in the scene at every frame. Due to this, illumination effects, such as color bleeding and specular reflections, can be simulated for virtual objects in a consistent way. A unifying sampling method for the spherical harmonics transformation pass is also used. It is independent of map format and does not need to apply different weights for each sample. The developed technique is combined with an extended version of Lafortune Spatial BRDF, featuring Fresnel effect and an innovative tangent rotation parameterization. The solution is evaluated in various Augmented Reality case studies, where other features like shadowing and lens effects are also exploited. |
| Databáze: | OpenAIRE |
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