Ray casting method using hardware

Details Ray casting method using hardware Ray casting method using hardware

G - Physics

06

T

G06T 15/50 (2006.01) G06T 15/00 (2006.01)

Patent

CA 2246952

Ray casting method is performed using a hardware. Ray casting is performed on a 3D object formed in a three-dimensional array of voxels, luminance information is generated for each unit ray path based on voxel information assigned to the voxels on the ray path, and an image related to the 3D object are generated based on the luminance information. At this time, pattern information representing a pattern of the ray paths is previously stored in a branch point table memory. A memory control section determines ray paths for generating the luminance information based on the pattern information.

Méthode de lancer de rayon, utilisant un matériel. Le lancer de rayon est effectué sur un objet 3D formé dans un réseau tridimensionnel de voxels. De l'information de luminance est générée pour chaque trajet de rayon d'après des données affectées aux voxels sur le trajet de rayon. Et une image liée à l'objet 3D est générée en fonction de l'information de luminance. A ce moment, de l'information représentant un profil de trajets de rayons est préstockée dans une mémoire de table de points de branchement. Une section de commande de mémoire détermine les trajets de rayons nécessaires pour générer l'information de luminance en fonction de l'information de profil.

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