Patent · US Expired

Image processing for noise reduction

US5708693A · kind A · utility

30Cited by

3References

20Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Til Aach · Aachen, DE
Dietmar W. Kunz · Aachen, DE
Stefan H. E. Ludeke · Aachen, DE

Key dates

Filing date	Jun 20, 1996
Grant date	Jan 13, 1998
Priority date	—
Expiry date	Jun 20, 2016

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30004
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An image processing method includes multi-resolution decomposition to decompose an input image into frequency-band images, which are subsequently filtered according to an order statistics filtering. Preferably, a finite impulse response median hybrid is employed. The filtered frequency-band images are synthesized to form the filtered output image.

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