In-focus detecting device

Details In-focus detecting device In-focus detecting device

1992-06-22

1993-03-09

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358227, G02B 736, G03B 310, H04N 5232, H04N 964

Patent

active

051929988

ABSTRACT:
An in-focus detecting device is arranged to detect the width of a color transition area of an object image from the color components of a video signal and to determine an in-focus state by evaluating the width.

REFERENCES:
patent: 4998162 (1991-03-01), Kondo

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