EP 1899896 A2 20080319 - REAL-TIME PRECISION RAY TRACING
Title (en)
REAL-TIME PRECISION RAY TRACING
Title (de)
ECHTZEIT-PRÄZISIONS-STRAHLVERFOLGUNG
Title (fr)
LANCER DE RAYON DE PRECISION EN TEMPS REEL
Publication
Application
Priority
- US 2006024631 W 20060623
- US 69323105 P 20050623
Abstract (en)
[origin: WO2007002494A2] Systems and techniques are described for ray tracing and for the efficient construction of acceleration data structures required for fast ray tracing. A computer graphics system generates, for each pixel in an image, a pixel value that is representative of a point in a scene as recorded on an image plane of a simulated camera. The computer graphics system is configured to generate the pixel value for an image using a selected ray-tracing methodology. The selected ray-tracing methodology includes the use of a ray tree that includes at least one ray shot from the pixel into a scene along a selected direction. The ray-tracing methodology further includes calculating the intersections of rays and surfaces in the scene. An axis-aligned bounding box is defined that contains, for a given ray, the point of intersection of the ray and surface nearest the origin of the ray. The bounding box is iteratively refined until a predetermined termination criterion has been met.
IPC 8 full level
G06K 9/36 (2006.01); G06T 15/06 (2011.01); G06T 15/50 (2011.01)
CPC (source: EP)
G06T 15/06 (2013.01); G06T 15/50 (2013.01)
Citation (search report)
See references of WO 2007002494A2
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 2007002494 A2 20070104; WO 2007002494 A3 20070607; AU 2006261967 A1 20070104; AU 2006261967 B2 20100916; CA 2609283 A1 20070104; EP 1899896 A2 20080319; JP 2009514059 A 20090402; JP 4972642 B2 20120711
DOCDB simple family (application)
US 2006024631 W 20060623; AU 2006261967 A 20060623; CA 2609283 A 20060623; EP 06773915 A 20060623; JP 2008518466 A 20060623