Adaptive non-linear noise reduction techniques

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 )...

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Bibliographic Details
Main Author ALVAREZ JOSE ROBERTO
Format Patent
LanguageEnglish
Published 02.01.2007
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary: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.
Bibliography:Application Number: US20050153472