Patent · US Expired

Noise reduction in an image

US6173084A · kind A · utility

27Cited by

3References

11Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Til Aach · Aachen, DE
Dietmar W. Kunz · Aachen, DE
Dietmar Koch · Gummersbach, DE

Key dates

Filing date	Jun 3, 1998
Grant date	Jan 9, 2001
Priority date	—
Expiry date	Jun 3, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG06T5/20
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The invention discloses a method of processing an image including the steps of decomposing the image into detail images at successive resolution levels. The detail images at successive resolution levels contain image information at respective spatial scales. Filtering of detail images is carried-out in dependence on at least one subsequent detail image having a lower resolution level than the current detail image. A processed image is reconstructed from the filtered detail images.

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