Imaging apparatus, focus control method, and program
First Claim
Patent Images
1. An imaging apparatus comprising:
- an imaging element configured to generate an image signal;
a control unit configured to process the image signal, wherein the control unit comprises one or more central processing units (CPUs) configured to;
arrange range-finding regions of which region sizes are different by hierarchizing thereof;
select one or more range-finding regions in a predetermined order from the arranged range-finding regions; and
perform a focusing operation by generating;
a first evaluation value using one or more signals, from the imaging element, corresponding to each of the selected one or more range-finding regions; and
a second evaluation value using one or more signals, from a source other than the imaging element, corresponding to predefined range-finding frames selected by a user; and
a lens control unit configured to control a position of a focus lens based on the first evaluation value and the second evaluation value.
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Abstract
An imaging apparatus which includes a range-finding region arrangement unit which arranges range-finding regions of which region sizes are different by hierarchizing thereof, a range-finding region selection unit which selects the range-finding region in a predetermined order from the arranged range-finding regions, and a control unit which performs a focusing operation by generating an evaluation value which denotes degree of focusing with respect to the range-finding regions which are selected in the range-finding region selection unit, and controlling a position of a focus lens based on the evaluation value.
16 Citations
13 Claims
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1. An imaging apparatus comprising:
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an imaging element configured to generate an image signal; a control unit configured to process the image signal, wherein the control unit comprises one or more central processing units (CPUs) configured to; arrange range-finding regions of which region sizes are different by hierarchizing thereof; select one or more range-finding regions in a predetermined order from the arranged range-finding regions; and perform a focusing operation by generating; a first evaluation value using one or more signals, from the imaging element, corresponding to each of the selected one or more range-finding regions; and a second evaluation value using one or more signals, from a source other than the imaging element, corresponding to predefined range-finding frames selected by a user; and a lens control unit configured to control a position of a focus lens based on the first evaluation value and the second evaluation value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A focus control method comprising:
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arranging range-finding regions of which region sizes are different by hierarchizing thereof; selecting a range-finding region in a predetermined order from the arranged range-finding regions; performing a focusing operation by generating; a first evaluation value using one or more signals, from the imaging element, corresponding to each of the selected one or more range-finding regions; and a second evaluation value using one or more signals, from a source other than the imaging element, corresponding to predefined range-finding frames selected by a user; and controlling a position of a focus lens based on the first evaluation value and the second evaluation value.
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13. A non-transitory computer-readable storage medium having stored thereon, a set of computer-executable instructions for causing a computer to execute steps comprising:
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arranging range-finding regions of which region sizes are different by hierarchizing thereof; selecting a range-finding region in a predetermined order from the arranged range-finding regions; performing a focusing operation by generating; a first evaluation value using one or more signals, from the imaging element, corresponding to each of the selected one or more range-finding regions; and a second evaluation value using one or more signals, from a source other than the imaging element, corresponding to predefined range-finding frames selected by a user; and controlling a position of a focus lens based on the first evaluation value and the second evaluation value.
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Specification