Method and apparatus for decimation mode determination...

Details Method and apparatus for decimation mode determination... Method and apparatus for decimation mode determination...

2005-04-30

2010-10-12

Lee, Y. (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07813430

ABSTRACT:
In an apparatus that converts (compresses) motion image data, the amount of motion of a subject in a block of motion image data is detected, and spatial decimation is performed in a mode in which sampling point positions are fixed or in a mode in which sampling point positions are shifted, depending on the detected amount of motion. When predicted image quality corresponding to the moving speed of a subject detected by analyzing blocks is lower than a predetermined threshold level, spatial decimation is performed in the mode in sampling point positions are shifted such that the moving speed of the subject is virtually changed to a value at which a super resolution effect occurs, thereby achieving data conversion without causing significant degradation in image quality.

REFERENCES:
patent: 5592226 (1997-01-01), Lee et al.
patent: 2004/0036807 (2004-02-01), Takahashi et al.
patent: 01-231583 (1989-09-01), None
patent: 2005-198268 (2005-07-01), None
Japanese Office Action issued on Nov. 10, 2009 in connection with corresponding JP Application No. 2005-052678.

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