Recursive noise reduction with still pixel detection

Details Recursive noise reduction with still pixel detection Recursive noise reduction with still pixel detection

2007-02-13

2007-02-13

Lee, Michael H. (Department: 2622)

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

C348S619000

Reexamination Certificate

active

10659032

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.

REFERENCES:
patent: 4390894 (1983-06-01), Raven
patent: 4626891 (1986-12-01), Achiha
patent: 4881125 (1989-11-01), Krause
patent: 5027201 (1991-06-01), Bernard
patent: 6411341 (2002-06-01), De Haan et al.

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