Optics: measuring and testing – Range or remote distance finding – Triangulation ranging with photodetection – but with no...
Patent
1997-11-19
1999-05-04
Hayes, Gail O.
Optics: measuring and testing
Range or remote distance finding
Triangulation ranging with photodetection, but with no...
356 403, 356 404, 348353, 396123, 2502017, G03B 1336
Patent
active
059009276
ABSTRACT:
An image pickup frame is divided into a plurality of areas. A contrast at each area is measured. An area where a main subject is located is detected by comparing contrasts at areas. A distance to a subject in the area where the main subject is located is measured. With this range finding technique, even if a main subject is not located at the central area of an image pickup frame, an area where the main subject is located can be identified and range finding can be performed only for that area.
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Fuji Photo Film Co. , Ltd.
Hayes Gail O.
Laufer Pinchus M
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