Classification to change exposure within a cell of different pix

Details Classification to change exposure within a cell of different pix Classification to change exposure within a cell of different pix

1992-06-05

1994-10-25

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358458, 358459, 358465, H04N 140

Patent

active

053594312

ABSTRACT:
A method and arrangement for reproducing an original image, scans an original image to produce a digitized image, this digitized image containing a plurality of pixels. The pixels are grouped into cells, and the pixels in each cell are classified into one of at least two classes. An exposure level for printing these pixels is modified according to this classification. The pixels are printed according to the modified exposure levels to reproduce the original image with even halftone lightness jumps.

REFERENCES:
patent: 4547812 (1985-10-01), Waller et al.
patent: 5081528 (1992-01-01), Hayashi et al.

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