Image analysis – Image enhancement or restoration – Image filter
Patent
1999-02-12
2000-11-21
Rogers, Scott
Image analysis
Image enhancement or restoration
Image filter
382275, 3488451, 348607, 348241, G06K 940, G06T 500, H04N 521, H04N 5235
Patent
active
061514160
ABSTRACT:
A method, apparatus, and article of manufacture for restoring a deteriorated signal to an undeteriorated signal. A deteriorated signal consists of a plurality of deteriorated and undeteriorated data points. For each deteriorated data point, a plurality of class types is created based upon characteristics of the area containing the deteriorated data point. The data point is classified with respect to one of the plurality of class types and assigned a corresponding input signal class. The undeteriorated signal is generated by adaptively filtering the deteriorated input signal in accordance with the input signal classification result. More than one classification method is used to create the plurality of class types. Created classes may include a motion class, an error class, a spatial class or a spatial activity class. An adaptive class tap structure is used to create the plurality of class types for improvement of classification quality. The spatial class taps can be selected adaptively according to the motion and or error class. The spatial activity class taps can be selected adaptively according to the motion and or error class.
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Carrig James J.
Fujimori Yasuhiro
Ghosal Sugata
Kondo Tetsujiro
Rogers Scott
Sony Corporation
Sony Electronics Inc.
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