G - Physics – 06 – T
Patent
G - Physics
06
T
G06T 7/20 (2006.01) H04N 5/911 (2006.01) H04N 7/18 (2006.01) H04N 7/26 (2006.01)
Patent
CA 2311076
An interframe difference signal is generated from the video signal and its one-frame delayed video signal. A filter removes a carrier color signal from the interframe difference signal to output the interframe difference luminance signal. A first motion judging circuit judges a motion in the video signal at a target pixel from the interframe difference luminance signal to output a first motion judging result in accordance with a first edge detection signal. A second motion judging circuit judges a motion in the video signal at the target pixel from a luminance signal and the carrier signal in the interframe difference signal to output a second motion judging result in accordance with a second edge detection circuit. The first and second motion judging results are combined. A majority determining circuit determines majority of the combined result from adjacent Q pixels in accordance with a third edge detection signal. A circular signal generation circuit generates a coefficient K according to the result of the majority determining circuit. The interframe difference signal is multiplied with k to generate a circulation signal. A subtractor subtracts the circulation signal from the video signal to generate an output video signal of which noise is suppressed.
Fujita Yukio
Kasahara Misa
Kato Noriyoshi
Sano Toshiyuki
Toyoda Keiji
Matsushita Electric Industrial Co. Ltd.
Robic
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