Coarse scan/fine print algorithm

Details Coarse scan/fine print algorithm Coarse scan/fine print algorithm

1979-12-03

1981-07-21

Britton, Howard

Facsimile and static presentation processing

Facsimile

Recording apparatus

358138, 358283, 364515, H04N 140

Patent

active

042801443

ABSTRACT:
An apparatus and method for improving the print quality of a coarse scan/fine print image processing device. The apparatus includes an encoder which assigns a code to a coarsely scanned picture element (PEL). The assigned code is representative of the reflectance characteristic of the PEL. For fine reproduction of coarsely scanned data, the coarsely scanned PEL is summed with at least four adjacent horizontal and vertical PELs to reproduce a fine PEL comprising of at least four subelements.

REFERENCES:
patent: 3294896 (1966-12-01), Young
patent: 3573789 (1971-04-01), Sharp
patent: 3739082 (1973-06-01), Lippel
patent: 3916096 (1975-10-01), Everett
patent: 4032977 (1977-06-01), Liao
patent: 4124870 (1978-11-01), Schatz
patent: 4150400 (1979-04-01), Wong
patent: 4184206 (1980-01-01), Harano
patent: 4205341 (1980-05-01), Mitsuya

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