Image processing apparatus

Details Image processing apparatus Image processing apparatus

1984-11-30

1987-06-09

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358282, 358293, 382 53, H04N 140

Patent

active

046724613

ABSTRACT:
An image processing apparatus comprising a detector for reading out image information on an original placed on an original glass plate and detecting an area of the original, and a microcomputer for detecting a concentration level regarding the main-scan line of the image information in the original area read out by the detector and operating a threshold value for a binary coding process regarding the main-scan line of the image information on the basis of the concentration level. By changing the threshold level, the background noise eliminating process can be performed even if the background level varies. Thus, even if an original is unevenly placed on the original glass plate, the background noise eliminating process can be executed in the whole area of the original image.

REFERENCES:
patent: 3790706 (1974-02-01), Gubala et al.
patent: 4468703 (1984-08-01), Fujiwara et al.
patent: 4468704 (1984-08-01), Stoffel et al.
patent: 4562486 (1985-12-01), Suzuki et al.

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