Filtering method and apparatus for removing blocking...

Details Filtering method and apparatus for removing blocking... Filtering method and apparatus for removing blocking...

2006-12-05

2006-12-05

Vo, Tung (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07145953

ABSTRACT:
Provided are a filtering method and apparatus for removing blocking artifacts and/or ringing noise. The filtering apparatus includes (a) performing one-dimensional discrete cosine transform (1D DCT) on video data on a block-by-block basis in a horizontal or vertical direction; (b) performing 1D DCT in the other direction of (a) and quantization on at least one of 1D DCT coefficients for a pixel obtained by performing 1D-DCT on the video data, the pixel being selected according to pixel position; and (c) generating filtering information based on the quantized pixel coefficient obtained from (b). According to the filtering method and apparatus, it is possible to reduce the amount of calculation when obtaining filtering information to remove the blocking artifacts and/or ringing noise.

REFERENCES:
patent: 5475434 (1995-12-01), Kim
patent: 5737446 (1998-04-01), Burns
patent: 6539060 (2003-03-01), Lee et al.
patent: 6912255 (2005-06-01), Drezner et al.
patent: 6983079 (2006-01-01), Kim
patent: 2003/0219074 (2003-11-01), Park et al.

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