Digital video signal noise-reduction apparatus with high pass an

Details Digital video signal noise-reduction apparatus with high pass an Digital video signal noise-reduction apparatus with high pass an

1990-12-17

1992-04-21

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358167, H04N 521

Patent

active

051073404

ABSTRACT:
A noise-reduction apparatus is disclosed which reduces noise contained in a digital video signal. A two-frame difference detecting unit receives the digital video signal and detects a two-frame difference signal. A high-frequency component extracting unit extracts a high-frequency component of the digital video signal or a high-frequency component of the two-frame difference signal. A first elimination signal generating unit generates a first elimination signal corresponding to the two-frame difference signal. A frame difference detecting unit received the digital video signal and detects a frame difference signal. A low-frequency component extracting unit extracts a low-frequency component of the digital video signal or a low-frequency component of the frame difference signal. A second elimination signal generating unit generates a second elimination signal corresponding to the frame difference signal. A noise elimination unit eliminates the noise from the digital video signal in accordance with the first and second elimination signals.

REFERENCES:
patent: 4737850 (1988-04-01), Lu et al.
patent: 4794454 (1988-12-01), Sugiyama et al.
patent: 4796088 (1989-01-01), Nishimura et al.
patent: 4807034 (1989-02-01), Takeuchi et al.
patent: 4870482 (1989-09-01), Yasuki et al.
patent: 4961113 (1990-10-01), Okada

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