MELLADO, Nicolas; BARLA, Pascal; GUENNEBAUD, Gael; REUTER, Patrick; DUQUESNE, Gregory

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MELLADO, Nicolas
Melting the frontiers between Light, Shape and Matter [MANAO]
Laboratoire Bordelais de Recherche en Informatique [LaBRI]
Laboratoire Photonique, Numérique et Nanosciences [LP2N]

BARLA, Pascal
Melting the frontiers between Light, Shape and Matter [MANAO]
Laboratoire Bordelais de Recherche en Informatique [LaBRI]
Laboratoire Photonique, Numérique et Nanosciences [LP2N]

GUENNEBAUD, Gael
Melting the frontiers between Light, Shape and Matter [MANAO]
Laboratoire Bordelais de Recherche en Informatique [LaBRI]
Laboratoire Photonique, Numérique et Nanosciences [LP2N]

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Communication dans un congrès avec actes

Ce document a été publié dans

SIGGRAPH Talk Program, 2013-08, Anaheim. 2013-08

ACM New York

Résumé en anglais

Curvature is commonly employed for enhancing details in textured 3D models, or to modulate shading at the rendering or compositing stage. However, existing methods that compute curvature in object space rely on mesh-based surfaces and work at the vertex level. Consequently, they are not well adapted to production-quality models that rely on either subdivision surfaces with displacement and bump maps, or on implicit and procedural representations. In practice they would require a view-dependent scene discretization at each frame, to adapt geometry to visible details and avoid aliasing artifacts. Our approach is independent of both scene complexity and the choice of surface representations since it computes mean curvature from scratch at each frame in screen-space. It works without any pre-process and provides a controllable screen-space scale parameter, which makes it ideal for production requirements, either during rendering or compositing.< Réduire

Mots clés en anglais

curvature

ray-tracing

shading

screen-space

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Screen-Space Curvature for Production-Quality Rendering and Compositing

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Résumé en anglais

Mots clés en anglais

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