Image signal processing apparatus

Details Image signal processing apparatus Image signal processing apparatus

1989-12-29

1990-08-28

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

358456, 382 54, G06K 936

Patent

active

049531140

ABSTRACT:
An image signal processing apparatus has first processing device for processing an image signal in a first mode, and a second for processing the image signal in a second mode. The first processing device eliminates a selected frequency component from the image signal. The first or second processing device is selected by an image discrimination signal.

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patent: 4691366 (1987-09-01), Fenster
patent: 4723173 (1988-02-01), Tanioka

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