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

1990-04-27

1992-07-07

Perkey, W. B.

Photocopying

Projection printing and copying cameras

Identifying, composing, or selecting

354410, 354430, 354106, 358 76, G03B 1724

Patent

active

051287110

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 principle image such as a facial image or a figure image can be identified.

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

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