Patent · US Active

Adaptive sampling along edges for surface rendering

US7742631B2 · kind B2 · utility

0Cited by

2References

13Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Jurgen Weese · Aachen, DE
Marc Busch · Aachen, DE
Gundolf Kiefer · Aachen, DE
Helko Lehmann · Aachen, DE

Key dates

Filing date	Mar 3, 2005
Grant date	Jun 22, 2010
Priority date	—
Expiry date	Oct 12, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG06T15/503
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

High frequency signals cannot be reconstructed properly from sampled data if the sampling frequency lies below the Nyquist rate. The invention addresses this problem by choosing few additional sample points along a trajectory intersecting the region comprising the high frequency signals, such as an edge. Intermediate rendering data is used to determine the additional sample points. Therefore, according to an exemplary embodiment of the present invention, 4 adaptively chosen sample points per pixel may provide a visual quality comparable to 16 times super-sampling, but at a much lower computational cost.

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