Systems and methods for image processing providing noise...

Television – Image signal processing circuitry specific to television – Combined noise reduction and transition sharpening

Reexamination Certificate

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C382S266000

Reexamination Certificate

active

07388621

ABSTRACT:
Image processing methods and systems for noise reduction and edge enhancement. A variation detector is provided to evaluate measures of edge existence in a plurality of predetermined directions within pixels of a video signal, and determine a control signal according to a level of variation on the measures of edge existence. A noise reduction circuit and edge enhancement circuit filter and edge enhance the video signal, respectively, according to the control signal.

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CN Office Action mailed Mar. 30, 2007.

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