Digital camera
AssigneeNikon Corporation
InventorNorikazu Yokonuma
Life of this patent
Estimating the term…
Abstract
A digital camera includes: an image sensor that captures an image of a subject and outputs an image signal; and a control device that engages the image sensor to capture an image at an exposure value having been set, makes a decision as to whether or not an overflow or an underflow deviating from a dynamic range of the image sensor manifests, calculates an exposure correction quantity with which the exposure value having been set is to be corrected in order to reduce the overflow or the underflow based upon results of the decision and engages the image sensor to capture a new image at an exposure value having been corrected in correspondence to the exposure correction quantity.
Claims19
A digital camera comprising:
- an image sensor that captures an image of a subject and outputs an image signal;
- and
- a control device that engages the image sensor to capture an image at an exposure value having been set, makes a decision as to whether or not an overflow or an underflow deviating from a dynamic range of the image sensor manifests, calculates an exposure correction quantity with which the exposure value having been set is to be corrected in order to reduce the overflow or the underflow based upon results of the decision and engages the image sensor to capture a new image at an exposure value having been corrected in correspondence to the exposure correction quantity.
A digital camera comprising:
- an image sensor that is constituted with a plurality of pixels, captures an image of a subject and outputs a plurality of signals each corresponding to one of the pixels;
- and
- a control device that controls an image-capturing operation at the image sensor, wherein:
- the control device controls the image sensor so as to capture a subject image at an exposure value having been set, counts a number of signals indicating values exceeding a predetermined upper limit value and a number of signals indicating values under a predetermined lower limit value among the plurality of signals output by capturing an image at the exposure value having been set, corrects the exposure value having been set based upon the number of signals indicating values exceeding the predetermined upper limit value and the number of signals indicating values under the predetermined lower limit value having been counted and controls the image sensor so as to capture a subject image at the corrected exposure value.
Dependencies are inferred from the claim text.