DYNAMIC CONTROLLER FOR DIGITAL FILTER FOR VIDEO SIGNAL

Japanese Patent JP3604266

B2

PROBLEM TO BE SOLVED: To perform optimum filtering for conversion matched with divided image areas in a format converter for converting the resolution of video signals.
SOLUTION: In this dynamic controller of a digital filter in the format converter for converting the resolution of the video signals, the plural coefficient tables of the digital filter used at the time of resolution conversion are prepared 104 and the different coefficient tables are applied for the respective divided image areas. To put it concretely, a specified area in images, the face area at the time of the image of a human body for instance, is extracted, the different coefficient tables are applied for the face area and the other area and format conversion is performed. Or, the movement of the face area is extracted and the application area of a coefficient correspondence table applied to the specified area is moved as well matched with the movement. Further, the area of a large motion vector amount and the area of a small motion vector amount are extracted from the movement of the face area and the different coefficient tables are applied respectively.

Osamu Saito
Mamoru Oda

JP33700697A

December 22, 2004

December 08, 1997

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Sharp Corporation

G06T3/40; H04N7/01; H04N7/14; H04N11/04; H04N11/20; H04N19/117; H04N19/137; H04N5/14; H04N19/139; H04N19/167; H04N19/17; H04N19/174; H04N19/176; H04N19/20; H04N19/50; H04N19/57; H04N19/80; H04N19/85; (IPC1-7): H04N5/14; H04N7/01; H04N7/14; H04N11/20

JP6319129A
JP5095541A
JP8030781A
JP9284601A
JP9205648A
JP9205648A

Akinaka Takano

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