Scanned document image resolution enhancement

Details Scanned document image resolution enhancement Scanned document image resolution enhancement

1989-11-09

1991-11-12

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340703, 340705, 382 56, G09G 300

Patent

active

050651498

ABSTRACT:
Method and apparatus for providing high resolution images for static display of document pages that are scanned in through a document scanner at high resolution, with reduced bandwidth requirements. In one embodiment, groups of four scanned image pixel values, each one bit in length, are reduced to a single two-bit pixel value that determines a pixel value for a display image pixel; and selected displayed image pixel values are periodically varied between the original displayed image pixel value and an alternative pixel value to restore the perception of high resolution available in the scanned image.

REFERENCES:
patent: 4210936 (1980-07-01), Cinque et al.
patent: 4229768 (1980-10-01), Kurahayashi et al.
patent: 4280144 (1981-07-01), Bacon
patent: 4408197 (1983-10-01), Komatsu et al.
patent: 4447809 (1984-05-01), Kodama et al.
patent: 4481509 (1984-11-01), Sasaki et al.
patent: 4484188 (1984-11-01), Ott
patent: 4532503 (1985-07-01), Pennebaker
patent: 4532651 (1985-07-01), Pennebaker et al.
patent: 4546385 (1985-10-01), Anastassiou
patent: 4556878 (1985-12-01), Dwire et al.
patent: 4558370 (1985-12-01), Mitchell et al.
patent: 4646356 (1987-02-01), Anderson et al.
patent: 4667247 (1987-05-01), Karow
patent: 4707745 (1987-11-01), Sakano
patent: 4723298 (1988-02-01), Schiller
patent: 4742553 (1988-05-01), Irwin
patent: 4835527 (1989-05-01), Hersh
R. Jadrnicek, "IBM's Professional Graphics System," BYTER Magazine, Nov. 1985, pp. 355-359.

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