Method and system for compensating for a shading phenomenon

Details Method and system for compensating for a shading phenomenon Method and system for compensating for a shading phenomenon

1984-11-15

1987-09-01

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358264, 358265, 358266, 358285, 329144, 331DIG2, H04N 110

Patent

active

046912410

ABSTRACT:
An image signal of the input and/or the output side is (are) multiplied by a shading compensation signal obtained from the output signal of a low-pass filter employed in a PLL circuit or a greating signal multiplying means.

REFERENCES:
patent: 3835249 (1974-09-01), Dattilo et al.
patent: 3984629 (1976-10-01), Gorog
patent: 4000368 (1976-12-01), Tisue
patent: 4518998 (1985-05-01), Warner

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