Electronic camera
First Claim
Patent Images
1. An electronic camera, comprising:
- an imaging device that captures a subject image and outputs image signals;
an image synthesizing device that performs image synthesis to generate a single image by using a plurality of sets of image signals obtained on different exposure values in response to a single imaging instruction by the imaging device;
a control device that determines whether or not to perform the image synthesis with the image synthesizing device based on a predetermined determination condition, and, when it is determined to perform the image synthesis, controls the image synthesizing device so as to perform the image synthesis to achieve an image with wide dynamic range; and
a photometric device that performs a photometric calculation using the image signals, wherein;
the control device decides a number of the plurality of sets of the image signals used for performing the image synthesis based on a difference between a maximum luminance value and a minimum luminance value obtained by the photometric calculation.
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Abstract
An electronic camera includes: an imaging device that captures a subject image and outputs image signals; an image synthesizing device that performs image synthesis to generate a single image by using a plurality of sets of image signals obtained on different imaging conditions by the imaging device; and a control device that determines whether or not to perform the image synthesis with the image synthesizing device based on a predetermined determination condition, and, when it is determined to perform the image synthesis, controls the image synthesizing device so as to perform the image synthesis.
20 Citations
18 Claims
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1. An electronic camera, comprising:
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an imaging device that captures a subject image and outputs image signals; an image synthesizing device that performs image synthesis to generate a single image by using a plurality of sets of image signals obtained on different exposure values in response to a single imaging instruction by the imaging device; a control device that determines whether or not to perform the image synthesis with the image synthesizing device based on a predetermined determination condition, and, when it is determined to perform the image synthesis, controls the image synthesizing device so as to perform the image synthesis to achieve an image with wide dynamic range; and a photometric device that performs a photometric calculation using the image signals, wherein; the control device decides a number of the plurality of sets of the image signals used for performing the image synthesis based on a difference between a maximum luminance value and a minimum luminance value obtained by the photometric calculation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electronic camera, comprising:
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an imaging device that captures a subject image and outputs image signals; an image synthesizing device that performs image synthesis to generate a single image by using a plurality of sets of image signals obtained on different exposure values by the imaging device; a photometric device that performs a photometric calculation using the image signals; and a control device that determines whether or not to perform the image synthesis with the image synthesizing device based on a maximum value or a minimum value of image signals captured by the imaging device in response to an instruction for photography, on an imaging condition based on average brightness of an image obtained by the photometric calculation by the photometric device. - View Dependent Claims (15, 16)
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17. An electronic camera, comprising:
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an imaging device that captures a subject image and outputs image signals; an image synthesizing device that performs image synthesis to generate a single image by using a plurality of sets of image signals obtained on different exposure values by the imaging device; a control device that determines whether or not to perform the image synthesis with the image synthesizing device based on a predetermined determination condition, and, when it is determined to perform the image synthesis, controls the image synthesizing device so as to perform the image synthesis; and a photometric device that performs a photometric calculation using the image signals, wherein; the control device determines whether or not to perform the image synthesis with the image synthesizing device based on a brightness distribution of an image obtained by the photometric calculation by the photometric device; and if the control device determines to perform the image synthesis with the image synthesizing device, the control device decides a number of the plurality of sets of the image signals used for the image synthesis and an imaging condition for obtaining the plurality of sets of the image signals, using a difference between a maximum luminance value and a minimum luminance value of image signals that make up a plurality of live preview images obtained on different imaging conditions by the imaging device. - View Dependent Claims (18)
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Specification