Patent · US Active

Recursive noise reduction with still pixel detection

US7701514B2 · kind B2 · utility

0Cited by

4References

30Claims

0Family size

Assignee

Huaya Microelectronics · KY

Inventors

Ge Zhu · Shanghai, CN
Edward Chen · Fremont, US
Henry Tung · Palo Alto, US

Key dates

Filing date	Dec 22, 2006
Grant date	Apr 20, 2010
Priority date	—
Expiry date	Mar 6, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04N5/144
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A system and system for performing adaptive recursive noise reduction with still pixel detection on a video stream is presented. After processing a field pixels that were modified are stored in the field so that processing of later fields uses the modified pixels. Furthermore, the system uses novel still pixel detection routines that include multiple thresholds and multiple windows of pixels so that noise reduction is only performed on still pixels.

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