Method of and apparatus for compensating image in image reproduc

Details Method of and apparatus for compensating image in image reproduc Method of and apparatus for compensating image in image reproduc

1982-10-29

1985-05-14

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358280, 382 54, H04N 140

Patent

active

045176078

ABSTRACT:
An image compensating method and an apparatus for the same which improves the quality of an image to be reproduced by an image reproduction system. A condition of an observed pixel or object pixel is subjected to MTF compensation to provide clear cut boundaries to an image relative to the background. Then, random noise compensation is effected for the condition of the object pixel after the MTF compensation, taking account of conditions of surrounding pixels or MTF-compensated conditions of the surrounding pixels. This removes smear which might appear in a sheet of paper due to random noise. These two kinds of compensation allows an image to be reproduced to a remarkable quality.

REFERENCES:
patent: 4355337 (1982-10-01), Sekigawa
patent: 4356555 (1982-10-01), Ejiri
patent: 4360883 (1982-11-01), Ejiri
patent: 4389677 (1983-06-01), Rushby

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