Occlusion culling for object-order volume rendering

G - Physics – 06 – T

Patent

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G06T 15/40 (2006.01)

Patent

CA 2447899

Computerized systems and methods provide occlusion culling for efficiently rendering a three dimensional image. The systems and methods calculate a set of occluder shields in a voxel dataset using a transparency value associated with each voxel of the dataset. Next, the occluder shields are applied to the dataset to identify regions of the voxel data that do not contribute to the final image. Finally, the voxel data set can be rendered, excluding regions that do not contribute to the final image.

L'invention concerne des systèmes et des procédés informatisés permettant de supprimer une occlusion, aux fins d'obtention d'un rendu efficace d'une image tridimensionnelle. Les systèmes et procédés calculent un ensemble d'écrans d'éléments d'occlusion dans un ensemble de données de voxel, au moyen d'une valeur de transparence associée à chaque voxel de l'ensemble de données. Puis les écrans d'éléments d'occlusion sont appliqués à l'ensemble de données, en vue d'identifier des régions des données de voxel ne contribuant pas à l'image finale. Enfin, l'ensemble de données de voxel peut être rendu, excluant des régions ne contribuant pas l'image finale.

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