Method and system for processing image information using backgro

Details Method and system for processing image information using backgro Method and system for processing image information using backgro

1996-06-06

1999-05-11

Vu, Kim Yen

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358456, 358467, 382252, 382261, H04N1/40

Patent

active

059033614

ABSTRACT:
A method and system assigns an image classification to a multi-level grey scale pixel value. The multi-level grey scale pixel value is modified based on an error generated by previously processed pixels and the image classification of the multi-level grey scale pixel and processed based on the assigned image classification to reduce the number of grey levels in the multi-level grey scale pixel value. An error is generated based on the processing of the modified multi-level grey scale pixel value and a portion of the error is diffused to a next pixel in a fastscan direction and a remaining portion of the error is diffused to pixels in a slowscan direction. The modified multi-level grey scale pixel value referred above includes an error from the previously processed neighboring pixels if the current pixel is classified as being processed as an error diffused pixel. The modified multi-level grey scale pixel value equals to the original pixel value if the current pixel is classified as being processed as a non-error diffused pixel.

REFERENCES:
patent: 4829587 (1989-05-01), Glazer et al.
patent: 5121447 (1992-06-01), Tanioka et al.
patent: 5243445 (1993-09-01), Koike
patent: 5258854 (1993-11-01), Eschbach
patent: 5271070 (1993-12-01), Truong et al.
patent: 5274472 (1993-12-01), Williams
patent: 5291309 (1994-03-01), Semasa
patent: 5317653 (1994-05-01), Eschbach et al.
patent: 5327256 (1994-07-01), Kang et al.
patent: 5410615 (1995-04-01), Mailloux
patent: 5442461 (1995-08-01), Levien
patent: 5528384 (1996-06-01), Metcalfe et al.
patent: 5659402 (1997-08-01), Fujita et al.
patent: 5768432 (1998-06-01), Schweid
A Survey of Electronic Techniques for Pictorial Reproduction by J.C. Stoffel and J.F. Moreland IEEE Transactions on Communications, vol. Com-29, No. 12, Dec. 1981. pp. 1898-1925.

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