Focusing control device, imaging device, focusing control method, and focusing control program
First Claim
1. A focusing control device comprising:
- a focusing position determination unit which causes an imaging element imaging a subject through a focus lens to image the subject for each position of the focus lens while moving the focus lens movable in an optical axis direction and determines a focusing position of the focus lens based on a captured image signal obtained through the imaging;
a face detection unit which performs face detection processing on the captured image signal obtained by imaging the subject with the imaging element;
an eye detection unit which performs eye detection processing on the captured image signal obtained by imaging the subject with the imaging element;
a specific region determination unit which, based on a face region detected by the face detection unit from a first captured image signal obtained through imaging with the imaging element at an arbitrary time and an eye region detected by the eye detection unit from a second captured image signal obtained through imaging with the imaging element at a time before the arbitrary time, determines a specific region indicating a region to be focused in the captured image signal;
at least one hardware processor configured to implement;
the focusing position determination unit;
the face detection unit;
the eye detection unit; and
the specific region determination unit; and
a drive unit which drives the focus lens to a focusing position determined by the focusing position determination unit based on a signal of the specific region determined by the specific region determination unit in the captured image signal.
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Accused Products
Abstract
Disclosed are a focusing control device, an imaging device, a focusing control method, and a focusing control program capable of enabling focusing on an eye region and obtaining an intended focusing result. The focusing control device includes a focusing position determination unit 34 which determines a focusing position based on a captured image signal obtained by imaging a subject with an imaging element 5 while moving a focus lens, and an AF region determination unit 33 which determines an AF region based on a face region detected from a captured image signal obtained through imaging with the imaging element 5 at an arbitrary time and an eye region detected from a captured image signal obtained through imaging at a time before the arbitrary time. The focus lens is driven to the focusing position determined by the focusing position determination unit 34 based on a signal of the AF region.
13 Citations
18 Claims
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1. A focusing control device comprising:
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a focusing position determination unit which causes an imaging element imaging a subject through a focus lens to image the subject for each position of the focus lens while moving the focus lens movable in an optical axis direction and determines a focusing position of the focus lens based on a captured image signal obtained through the imaging; a face detection unit which performs face detection processing on the captured image signal obtained by imaging the subject with the imaging element; an eye detection unit which performs eye detection processing on the captured image signal obtained by imaging the subject with the imaging element; a specific region determination unit which, based on a face region detected by the face detection unit from a first captured image signal obtained through imaging with the imaging element at an arbitrary time and an eye region detected by the eye detection unit from a second captured image signal obtained through imaging with the imaging element at a time before the arbitrary time, determines a specific region indicating a region to be focused in the captured image signal; at least one hardware processor configured to implement; the focusing position determination unit; the face detection unit; the eye detection unit; and the specific region determination unit; and a drive unit which drives the focus lens to a focusing position determined by the focusing position determination unit based on a signal of the specific region determined by the specific region determination unit in the captured image signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A focusing control method comprising:
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a focusing position determination step of causing an imaging element imaging a subject through a focus lens to image the subject for each position of the focus lens while moving the focus lens movable in an optical axis direction and determining a focusing position of the focus lens based on a captured image signal obtained through the imaging; a face detection step of performing face detection processing on the captured image signal obtained by imaging the subject with the imaging element; an eye detection step of performing eye detection processing on the captured image signal obtained by imaging the subject with the imaging element; a specific region determination step of, based on a face region detected in the face detection step from a first captured image signal obtained through imaging with the imaging element at an arbitrary time and an eye region detected in the eye detection step from a second captured image signal obtained through imaging with the imaging element at a time before the arbitrary time, determining a specific region indicating a region to be focused in the captured image signal; and a drive step of driving the focus lens to a focusing position determined in the focusing position determination step based on a signal of the specific region determined in the specific region determination step in the captured image signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A non-transitory computer readable medium storing a focusing control program which causes a computer to execute:
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a focusing position determination step of causing an imaging element imaging a subject through a focus lens to image the subject for each position of the focus lens while moving the focus lens movable in an optical axis direction and determining a focusing position of the focus lens based on a captured image signal obtained through the imaging; a face detection step of performing face detection processing on the captured image signal obtained by imaging the subject with the imaging element;
an eye detection step of performing eye detection processing on the captured image signal obtained by imaging the subject with the imaging element;a specific region determination step of, based on a face region detected in the face detection step from a first captured image signal obtained through imaging with the imaging element at an arbitrary time and an eye region detected in the eye detection step from a second captured image signal obtained through imaging with the imaging element at a time before the arbitrary time, determining a specific region indicating a region to be focused in the captured image signal; and a drive step of driving the focus lens to a focusing position determined in the focusing position determination step based on a signal of the specific region determined in the specific region determination step in the captured image signal.
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Specification