Motion adaptive noise reduction filter and motion compensated in

Details Motion adaptive noise reduction filter and motion compensated in Motion adaptive noise reduction filter and motion compensated in

1995-04-14

1996-10-22

Chin, Tommy P.

Television

Bandwidth reduction system

Data rate reduction

348416, 348415, 348420, 348398, 348397, H04B 712

Patent

active

055681964

ABSTRACT:
An accurate motion vector is locally estimated in a moving image, and motion compensation is performed on the image in the immediately preceding frame based on the motion vector obtained. Next, a low pass filter is applied between the current frame and the immediately preceding frame that has been motion compensated. By controlling the filter coefficient in pixel units when the filter is applied, blurring of a moving image is suppressed to a minimum while noise is largely reduced.

REFERENCES:
patent: 5025316 (1991-06-01), Darby
patent: 5095354 (1992-03-01), Sokawa et al.
patent: 5191419 (1993-03-01), Wischermann
patent: 5410307 (1995-04-01), Hekstra

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