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US 8,525,888 B2Granted
Electronic camera with image sensor and rangefinding unit
AssigneeNikon Corporation
InventorHiroyuki Abe
Life of this patent
Estimating the term…
Abstract
An electronic camera, includes an image sensor, a rangefinding means, an arithmetic operation means for calculating a characteristic quantities based upon at least either pixel density in an image obtained via the image sensor or rangefinding information obtained via the rangefinding means, a judgment means for judging a photographic scene based upon characteristic quantities calculated by the arithmetic operation means, and a control means for selecting camera settings in correspondence to the photographic scene having been judged.
Claims17
An electronic camera, comprising:
- an image sensor;
- a rangefinding unit;
- a first arithmetic operation unit that calculates a characteristic quantities based upon pixel density in an image obtained via the image sensor and rangefinding information obtained via the rangefinding unit;
- a second arithmetic operation unit that selects a characteristic quantity group with characteristic quantities closest to the characteristic quantities calculated by the first arithmetic operation unit, among a plurality of characteristic quantity groups classified in advance in a space in which the characteristic quantities are expressed;
- a third arithmetic operation unit that judges a photographic scene corresponding to the characteristic quantity group selected by the second arithmetic operation unit;
- a control unit that selects camera settings in correspondence to the photographic scene having been judged;
- and
- a storage unit that stores characteristic quantity variance/covariance information for each of the classified characteristic quantity groups, wherein:
- the second arithmetic operation unit selects a characteristic quantity group corresponding to the variance/covariance information indicating a value closest to a characteristic quantity calculated within the space by the first arithmetic operation unit.
6 more elements
An electronic camera, comprising:
- an image sensor;
- a rangefinding unit;
- a first arithmetic operation unit that calculates a characteristic quantities based upon pixel density in an image obtained via the image sensor and rangefinding information obtained via the rangefinding unit;
- a second arithmetic operation unit that selects a characteristic quantity group with characteristic quantities closest to the characteristic quantities calculated by the first arithmetic operation unit, among a plurality of characteristic quantity groups classified in advance in a space in which the characteristic quantities are expressed;
- a third arithmetic operation unit that judges a photographic scene corresponding to the characteristic quantity group selected by the second arithmetic operation unit;
- and
- a control unit that selects camera settings in correspondence to the photographic scene having been judged, wherein:
- the first arithmetic operation unit calculates a plurality of (N) characteristic quantities based upon pixel density of images obtained via the image sensor and rangefinding informations obtained via the rangefinding unit;
- the electronic camera further comprises a fourth arithmetic operation unit that executes characteristic quantity space conversion from a space in which the N characteristic quantities are expressed to a space in which the characteristic quantities of number less than N are expressed;
- and
- the second arithmetic operation unit selects a characteristic quantity group with characteristic quantities closest to a characteristic quantities resulting from conversion executed by the fourth arithmetic operation unit among a plurality of characteristic quantity groups classified in advance in the space resulting from the characteristic quantity space conversion.
8 more elements
Dependencies are inferred from the claim text.