Dilation of images without resolution conversion to compensate f

Details Dilation of images without resolution conversion to compensate f Dilation of images without resolution conversion to compensate f

1995-05-08

1996-01-09

Wong, Peter S.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358447, 382254, 382308, H04N 140, G06K 940

Patent

active

054833515

ABSTRACT:
An image compensation system which provides dilation or erosion of image features using halfbitting or fullbitting in the rendition of bitmap images, especially on a write-white printer. A region of pixels of an image is isolated which includes two or more correctable pixel locations. A set of state determination rules, based on the formation of pixels in the isolated region, is used to determine a corrected binary pixel state for each of the correctable pixels. Corrections for one correctable pixel may be considered in the state determination rules for adjacent correctable pixels. A single enhanced output pixel is provided for each image input pixel, thereby preserving the original image resolution. Performing enhancements on multiple input pixels simultaneously increases the system throughput.

REFERENCES:
patent: 4354337 (1982-10-01), Sekigawa
patent: 4437122 (1984-03-01), Walsh et al.
patent: 4450483 (1984-05-01), Coviello
patent: 4847641 (1989-07-01), Tung
patent: 4903316 (1990-02-01), Hongo et al.
patent: 5046120 (1991-09-01), Bishop
patent: 5050000 (1991-09-01), Ng
patent: 5200841 (1993-04-01), Kotaki et al.
patent: 5299308 (1994-03-01), Suzuki et al.

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