Picture image enlarging/reducing system

Details Picture image enlarging/reducing system Picture image enlarging/reducing system

1983-01-19

1985-03-05

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 77, H04N 104, H04N 146

Patent

active

045034699

ABSTRACT:
In a picture image enlarging/reducing system of the type wherein image magnification by a desired factor is achieved by first enlarging the image by an integer factor greater than the desired factor and then multiplying the enlarged image by a correction coefficient corresponding to the ratio of the desired factor to the integer factor, a zero judging circuit is provided to detect whether a line or a part of a line in the picture image is all zeros. If so, the zeros are inserted into the magnified picture image signal directly in accordance with the desired magnification factor.

REFERENCES:
patent: 4303948 (1981-12-01), Arai et al.

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