Image capturing apparatus, image capturing method, and storage medium
First Claim
1. An image capturing apparatus comprising:
- an image capturing unit configured to capture an image by driving a plurality of image sensor pixels;
a generation unit configured to generate an exposure period map by assigning, to each of the plurality of image sensor pixels, exposure control information to control a charge accumulation time, based on preliminary captured image data obtained by preliminary image capturing using said image capturing unit, the exposure control information including first exposure control information corresponding to a first accumulation time and second exposure control information corresponding to an accumulation time longer than the first exposure control information;
a correction unit configured to expand a first region having the first exposure control information on the exposure period map; and
a control unit configured to control the accumulation time for each of the plurality of image sensor pixels in accordance with the exposure period map corrected by said correction unit,wherein said image capturing unit performs main capturing in accordance with the accumulation time controlled by said control unit.
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Abstract
An image capturing apparatus including an image capturing unit configured to capture an image, and a generation unit configured to generate an exposure period map by assigning, to each of the plurality of image sensor pixels, exposure control information to control a charge accumulation time, based on preliminary captured image data obtained by preliminary image capturing using the image capturing unit. The exposure control information includes first exposure control information corresponding to a first accumulation time and second exposure control information corresponding to an accumulation time longer than the first exposure control information A correction unit expands a first region having the first exposure control information on the exposure period map, and a control unit controls the accumulation time for each of the plurality of image sensor pixels in accordance with the exposure period map corrected by the correction unit.
21 Citations
11 Claims
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1. An image capturing apparatus comprising:
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an image capturing unit configured to capture an image by driving a plurality of image sensor pixels; a generation unit configured to generate an exposure period map by assigning, to each of the plurality of image sensor pixels, exposure control information to control a charge accumulation time, based on preliminary captured image data obtained by preliminary image capturing using said image capturing unit, the exposure control information including first exposure control information corresponding to a first accumulation time and second exposure control information corresponding to an accumulation time longer than the first exposure control information; a correction unit configured to expand a first region having the first exposure control information on the exposure period map; and a control unit configured to control the accumulation time for each of the plurality of image sensor pixels in accordance with the exposure period map corrected by said correction unit, wherein said image capturing unit performs main capturing in accordance with the accumulation time controlled by said control unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11)
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10. A method of capturing an image performed by an image capturing apparatus, comprising:
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a preliminary image capturing step of capturing an image by driving a plurality of image sensor pixels; a generation step of generating an exposure period map by assigning, to each of the plurality of image sensor pixels, exposure control information to control a charge accumulation time, based on preliminary captured image data obtained by preliminary image capturing in said preliminary image capturing step, the exposure control information including first exposure control information corresponding to a first accumulation time and second exposure control information corresponding to an accumulation time longer than the first exposure control information; a correction step of expanding a first region having the first exposure control information on the exposure period map; a control step of controlling the accumulation time for each of the plurality of image sensor pixels in accordance with the exposure period map corrected in the correction step; and a main capturing step of capturing an image in accordance with the accumulation time controlled in the control step.
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Specification