Adaptive non-linear noise reduction techniques

Details Adaptive non-linear noise reduction techniques Adaptive non-linear noise reduction techniques

2005-10-25

2005-10-25

Miller, John (Department: 2614)

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

C348S607000, C348S627000, C382S262000

Reexamination Certificate

active

06958783

ABSTRACT:
An impulse-reducing module (200) reduces random noise in video pixels by providing an impulse detector (244) and an impulse reducer, such as a median filter (250). The impulse detector (244) generates filter control signals in response to detection of impulses, and the median filter (250) generates filtered pixel values in response to the filter control signals. The control signals set the median filter to a plurality of filter operating modes.

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Si Jun Huang,Adaptive Noise Reduction And Image Sharpening For Digital Video Compression, IEEE (1997) 3142-3147, Scientific-Atlanta Inc., USA.

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