Apparatus for recording position information of principal image

Details Apparatus for recording position information of principal image Apparatus for recording position information of principal image

1993-06-14

1994-11-29

Perkey, W. B.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 41, G03B 2780

Patent

active

053694635

ABSTRACT:
In recording an image on a recording medium such as photographic film, position information used for the detection of a principal image is recorded on the recording medium. The position information is read when a hard copy of the image is produced. A characteristic value is derived from within the area of the principal image detected in accordance with the position information. A print exposure amount used for producing a hard copy is determined in accordance with the characteristic value. The position information may be the information directly or indirectly representing the position of the primary image. The indirect representation may be a combination of a subject distance and a focal length of a taking lens. This combination determines a reference size of a face or figure image on a frame. By detecting an image having the same size as the reference size, the principal image such as a facial image or a figure image can be identified.

REFERENCES:
patent: 4769695 (1988-09-01), Terashita
patent: 4816874 (1989-03-01), Terashita et al.
patent: 4912495 (1990-03-01), Ishikawa et al.
patent: 4962400 (1990-10-01), Otani et al.
patent: 4977419 (1990-12-01), Wash et al.
patent: 5128711 (1992-07-01), Terashita et al.

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