Patent · US Active

Backface culling for motion blur and depth of field

US8587585B2 · kind B2 · utility

3Cited by

5References

26Claims

0Family size

Assignee

Intel Corporation · US

Inventors

Carl J. Munkberg · Malmö, SE
Tomas G. Akenine-Moller · Lund, SE
Marco Salvi · San Francisco, US
Robert M. Toth · Lund, SE
Jon N. Hasselgren · Bunkeflostrand, SE
Franz P. Clarberg · Lund, SE
Matt Pharr · San Francisco, US

Key dates

Filing date	Sep 28, 2010
Grant date	Nov 19, 2013
Priority date	—
Expiry date	Jan 23, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG06T13/20
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

In order to efficiently backface cull rendering primitives during computer graphics rendering, it is important to be sure that the rendering primitives to be culled are guaranteed to be backfacing even if the primitives are moving or are undergoing defocus blur. Therefore, we derive conservative tests that determine if a moving and defocused triangle is backfacing over an entire time interval and over the area of a lens. In addition, we present tests for the special cases of only motion blur and only depth of field.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.