EP 1844445 A1 20071017 - VOLUMETRIC SHADOWS FOR COMPUTER ANIMATION
Title (en)
VOLUMETRIC SHADOWS FOR COMPUTER ANIMATION
Title (de)
VOLUMETRISCHE SCHATTEN FÜR COMPUTERANIMATION
Title (fr)
OMBRES VOLUMETRIQUES POUR ANIMATIQUE
Publication
Application
Priority
- US 2005037488 W 20051018
- US 97521604 A 20041027
Abstract (en)
[origin: WO2006049870A1] A computer-rendered image of a three-dimensional scene includes a volumetric shadow cast by one or more objects in the scene. The data for the objects are rasterized to generate occlusion information that describes how objects within the volume occlude light. This information may be stored in an acceleration structure, which relates the occlusion information to volume elements within the occluding volume. A volumetric shadow is computed by tracing a ray through the occluding volume, the shadow based on the accumulated shading, effects of the volume elements on the traced ray. An artist-driven lighting model may be used to compute the shadow rather than a model based on pure physics. This model may provide a number of adjustable tools for controlling shading effects, including falloff, blending, motion blur, and coloring.
IPC 8 full level
G06T 15/60 (2006.01)
CPC (source: EP)
G06T 15/60 (2013.01)
Citation (search report)
See references of WO 2006049870A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006049870 A1 20060511; CA 2583664 A1 20060511; EP 1844445 A1 20071017; TW 200632780 A 20060916
DOCDB simple family (application)
US 2005037488 W 20051018; CA 2583664 A 20051018; EP 05812297 A 20051018; TW 94137701 A 20051027