Lit-Sphere extension for artistic rendering
| Autor: | Ken Anjyo, Hideki Todo, Shunichi Yokoyama |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Deferred shading
Cel shading Computer science business.industry Artistic rendering ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Computer Graphics and Computer-Aided Design GeneralLiterature_MISCELLANEOUS Non-photorealistic rendering Computer graphics Computer graphics (images) Computer vision Rasterisation Computer Vision and Pattern Recognition Shading Artificial intelligence Graphics business Software ComputingMethodologies_COMPUTERGRAPHICS |
| Zdroj: | The Visual Computer. 29:473-480 |
| ISSN: | 1432-2315 0178-2789 |
| DOI: | 10.1007/s00371-013-0811-7 |
| Popis: | The Lit-Sphere model proposed by Sloan et al. (Proceedings of Graphics Interface 2001, pp. 143---150, 2001) is a method for emulating expressive artistic shading styles for 3D scenes. Assuming that artistic shading styles are described by view space normals, this model produces a variety of stylized shading scenes beyond traditional 3D lighting control. However, it is limited to the static lighting case: the shading effect is only dependent on the camera view. In addition, it cannot support small-scale brush stroke styles. In this paper, we propose a scheme to extend the Lit-Sphere model based on light space normals rather than view space normals. Owing to the light space representation, our shading model addresses the issues of the original Lit-Sphere approach, and allows artists to use a light source to obtain dynamic diffuse and specular shading. Then the shading appearance can be refined using stylization effects including highlight shape control, sub-lighting effects, and brush stroke styles. Our algorithms are easy to implement on GPU, so that our system allows interactive shading design. |
| Databáze: | OpenAIRE |
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