Adaptive filter device and related method

Details Adaptive filter device and related method Adaptive filter device and related method

1997-09-08

1999-10-19

Rogers, Scott

Image analysis

Image enhancement or restoration

Image filter

382275, 382278, 348607, G06K 940, G06T 500, G06T 720

Patent

active

059701803

ABSTRACT:
A decision is made as to which of a first segment and a second segment of an input picture signal more correlates to a third segment of the input picture signal. The third signal segment is of interest. The first signal segment precedes the third signal segment by a 2-field interval or a 4-field interval. The second signal segment follows the third signal segment by a 2-field interval or a 4-field interval. Calculation is made as to a difference between the third signal segment and the more-correlating signal segment for every pixel related to the input picture signal. Every 1-pixel-corresponding portion of the third signal segment and every 1-pixel-corresponding portion of the more-correlating signal segment are mixed into a 1-pixel-corresponding portion of a filtering-resultant picture signal at a mixing ratio depending on the calculated difference.

REFERENCES:
patent: 5699128 (1997-12-01), Hayashi
patent: 5847772 (1998-12-01), Wells

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