Automatic follow-up focus detecting device and automatic follow-

Details Automatic follow-up focus detecting device and automatic follow- Automatic follow-up focus detecting device and automatic follow-

1992-03-20

1993-04-20

Adams, Russell E.

Facsimile and static presentation processing

Facsimile

Recording apparatus

354402, 354430, H04N 5232

Patent

active

052047490

ABSTRACT:
An automatic follow-up focus detecting device comprises means for shiftably setting a follow-up field; extracting means for extracting a feature of an object in relation to the follow-up field; storing means for storing the extracted feature; detecting means for detecting a relative shift between the object and the device on the basis of the feature of the object extracted by the extracting means and the feature stored by the storing means; and shifting means for shifting a distance measuring field following the object according to the relative shift.

REFERENCES:
patent: 4647979 (1987-03-01), Urata
patent: 4719485 (1988-01-01), Shikaumi
patent: 4762986 (1988-08-01), Suda et al.
patent: 4872058 (1989-10-01), Baba et al.
patent: 5023709 (1991-06-01), Kita et al.
patent: 5031049 (1991-07-01), Toyama et al.

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