JP2009267681A - Blur corrector and optical device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blur corrector capable of effective panning, and an optical device. <P>SOLUTION: The blur corrector includes an optical member 8a which can move in first and second directions, a blur correction driver 10 which can correct blurs in the first and second directions for photographed images by moving the optical member 8a, a position detector which detects a position of an object 50 included in a photographed image 52, a setting part 48 which sets a predetermined area including the position of the object 50 in the photographed image 52, and a controller 42 which controls the blur correction driver 10 so as to reduce blur correction with respect to one direction of the first and second directions when detecting the panning along one direction of each of the first and second directions and reduce blur correction for the other direction with respect to the other direction of each of the first and second directions if the position of the object 50 is outside of the predetermined area in the photographed image 52. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a shake correction apparatus and an optical apparatus.

  When performing so-called panning in a camera having a shake correction device, generally, composition changes in the pitch (vertical) direction and the yaw (horizontal) direction are independently determined, and the shake correction in each direction is stopped. Such control is performed (for example, Patent Document 1). This is because if blur correction control is applied in the direction of panning, the blur correction operates in the direction of correcting the panning operation, and good panning shooting cannot be performed.

  Such conventional control operates accurately when panning is performed only in one of the pitch direction and the yaw direction. However, when panning by moving the camera in an oblique direction, since the judgment of panning in the pitch direction and the yaw direction is performed separately, only one of the blur correction control is canceled and the other blur is controlled. There is a possibility that the correction control is not released and the subject is shifted from the center of the photographed image, and good panning cannot be performed.

Note that when panning is detected only in one of the pitch direction and the yaw direction, it is possible to cancel not only the blur correction in one direction but also the blur correction in the other direction at the same time. However, in such control, when panning is performed only in one of the pitch direction and the yaw direction, an effective panning shot image can be obtained by performing blur correction in the other direction. The original effect may not be obtained.
JP 2006-215393 A

  The present invention has been made in view of such a situation, and an object thereof is to provide a shake correction device and an optical device capable of effective panning.

In order to achieve the above object, a shake correction apparatus according to the first aspect of the present invention provides:
An optical member (8a, 20) movable in a first direction and a second direction intersecting the first direction;
A blur correction drive unit (10) capable of correcting the blur in the first direction and the blur in the second direction of the captured image (52) by driving the optical member (8a, 20);
A position detector (40) for detecting the position of a subject included in the captured image (52);
A setting unit (48) for setting a predetermined range including the position of the subject in the captured image (52);
When a panning shot along one of the first direction and the second direction is detected, blur correction is reduced in one of the first direction and the second direction, and the shot image (52) A control unit (42) for controlling the blur correction driving unit (10) so as to reduce blur correction in the other of the first direction and the second direction when the position of the subject exceeds the predetermined range; It is characterized by including.

  In the blur correction device according to the first aspect of the present invention, when panning is performed in the first direction or the second direction, the subject is captured by performing blur correction in the other direction. An effective panning shot image (52) can be obtained without deviating from the center of). Moreover, in the shake correction device of the present invention, when the panning is performed in an oblique direction that is intermediate between the first direction and the second direction, when only the panning shooting along one is detected, Perform such control. Therefore, blur correction is reduced in both the first direction and the second direction, and an effective panning shot image (52) can be obtained without the subject deviating from the center of the shot image (52).

  Preferably, the setting unit (48) sets the predetermined range along the other of the first direction and the second direction in the captured image (52). In general, the reason why the position of the subject exceeds the predetermined range is because the direction is different from the direction in which the panning is detected.

  Preferably, when the control unit (42) detects a panning shot along one of the first direction and the second direction, the control unit (42) stops blur correction in one of the first direction and the second direction. At the same time, when the position of the subject in the captured image (52) exceeds the predetermined range, the blur correction drive unit (10) is controlled so as to stop the blur correction for the other in the first direction and the second direction. To do.

  By performing such control, blur correction is stopped in both the first direction and the second direction even during panning in an oblique direction, and it is effective without the subject deviating from the center of the captured image (52). A panning shot image (52) is obtained.

  Preferably, the control unit (42) includes a panning detection unit (46) that detects a panning when the predetermined blur or more occurs in one of the first direction and the second direction. In the panning detection unit (46), for example, when a blur detection signal exceeding a threshold is continuously detected for a predetermined time, or when a blur detection signal exceeding the threshold is detected a plurality of times in a predetermined time For example, it detects that it is a panning shot.

  The control unit (42) may include a panning detection unit (46) that detects a panning when a predetermined operation unit is operated. For example, as the operation unit, an operation switch provided on the side surface of the optical lens barrel is exemplified, and by using this switch, the photographer sets a panning shot in the biting direction or a panning shot in the yawing direction. can do.

The blur correction apparatus according to the second aspect of the present invention is:
An optical member (8a, 20) capable of correcting blurring of the captured image (52) by moving in a first direction and a second direction intersecting the first direction;
A position detector (40) for detecting the position of a subject included in the captured image (52);
A setting unit (48) for setting a predetermined range including the position of the subject in the captured image (52);
A blur detection unit (12) for detecting that a predetermined blur or more has occurred in one of the first direction and the second direction;
When it is detected by the blur detection unit that the blur more than the predetermined has occurred in one of the first direction and the second direction, correction of blur occurring in one of the first direction and the second direction is performed. A blur correction unit (10) that reduces the blur correction that occurs in the other of the first direction and the second direction;
When the position of the subject in the captured image (52) exceeds the predetermined range, the control unit controls the blur correction unit so as to reduce correction of blur occurring in the other of the first direction and the second direction. (42).

  The shake correction apparatus according to the second aspect of the present invention has the same effects as the shake correction apparatus according to the first aspect described above.

Preferably, the blur detection unit detects a first blur detection unit (12a) that detects that a predetermined blur or more has occurred in the first direction, and detects that a predetermined blur or more has occurred in the second direction. A second blur detection unit (12b) that
The first blur detection unit and the second blur detection unit each independently detect that a predetermined blur or more has occurred.

  The means for detecting the position of the subject in the position detection unit (40) is not particularly limited. For example, the screen of the image being captured based on the subject light is divided, the motion vector of each divided region is calculated, and the motion vector is calculated. May be detected as the position of the subject.

  The setting unit (48) may set the predetermined range corresponding to the size of the subject. For example, when the subject is larger than the captured image (52), the predetermined range may be reduced. Conversely, when the subject is small, the predetermined range may be increased. This is because when the subject is small, even if the center of the subject deviates from the center of the captured image (52) within a predetermined range, a part of the subject does not protrude from the captured image (52).

  The optical component is not particularly limited, and may include a correction lens or an image sensor.

  The optical device of the present invention has the above-described blur correction device.

  In the above description, in order to explain the present invention in an easy-to-understand manner, the description has been made in association with the reference numerals of the drawings showing the embodiments, but the present invention is not limited to this. The configuration of the embodiment described later may be improved as appropriate, or at least a part of the configuration may be replaced with another component. Further, the configuration requirements that are not particularly limited with respect to the arrangement are not limited to the arrangement disclosed in the embodiment, and can be arranged at a position where the function can be achieved.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.
FIG. 1 is a schematic perspective view of a camera according to an embodiment of the present invention.
2 is a block diagram of the camera shown in FIG.
FIG. 3 is a flowchart showing an example of control of a shake correction apparatus according to an embodiment of the present invention.
4 (A) to 4 (C) are schematic diagrams showing a panning shot in an oblique direction,
FIG. 5 is a graph showing the temporal change in blur (angular velocity) in the yaw direction and pitch direction.
6A to 6C are views for explaining means for detecting the position of the subject.
7A and 7B are diagrams illustrating a predetermined range including the position of the subject.

  As shown in FIG. 1, a single-lens reflex camera 2 according to an embodiment of the present invention includes a camera body 4 and a lens barrel 6 that houses a photographing optical system. The camera body 4 and the lens barrel 6 are detachably coupled by a mount portion (not shown). This mount portion is provided with an electrical contact. When the camera body 4 and the lens barrel 6 are coupled, electrical connection between the two is established by contact between the electrical contacts.

  First, the configuration of the lens barrel 6 will be described. The lens barrel 6 has a photographing lens 8 (not shown) including an image blur correction lens 8a. The image blur correction lens 8a includes a first actuator 10a that moves the lens 8a to a first axis X located in a plane perpendicular to the optical axis Z, and a first axis X located in a plane perpendicular to the optical axis Z. And a blur correction drive unit 10 including a second actuator 10b for moving the lens 8a on a second axis Y perpendicular to the axis Y. These actuators 10a and 10b are preferably drive mechanisms that move the driven body in a non-contact manner, such as a voice coil motor.

  The lens barrel 6 includes a blur detection unit 12 including a first angular velocity sensor 12a and a second angular velocity sensor 12b. The first angular velocity sensor 12a detects a blur in the pitch rotation direction around the first axis X as an angular velocity. Further, the second angular velocity sensor 12b detects a blur in the pitch rotation direction around the second axis Y as an angular velocity. As shown in FIG. 2, the blur detection unit 12 including these angular velocity sensors 12a and 12b may be directly connected to the body side microcomputer 30 through a contact point, or via a lens side microcomputer not shown. It may be connected to the body side microcomputer 30.

  Next, the configuration of the camera body 4 will be described. The camera body 4 includes an image sensor 20 and a shutter 22. The image sensor 20 is constituted by, for example, a CCD or a CMOS sensor, and converts a photographed image taken from the optical axis Z direction through the photographing lens 8 of the lens barrel 6 into an electrical signal. The shutter 22 is a focal plane shutter, for example, and adjusts the exposure time of the image sensor 20 by controlling opening and closing thereof. The shutter 22 is used when shooting a still image.

  An image sensor driver 24 and an A / D converter 26 are connected to the image sensor 20. The image sensor driver 24 drives the image sensor 20 based on an instruction from the body side microcomputer 30 to generate an analog image signal of a captured image.

  The A / D conversion unit 26 is connected to the body side microcomputer 30 via the memory 28, and based on an instruction from the body side microcomputer 30, the analog image signal of the captured image generated by the image sensor 20 is subjected to CDS ( Analog signal processing such as correlated double sampling), gain adjustment, and A / D conversion is performed, and the processed image data after the processing is output to the memory 28. In addition, the A / D conversion unit 26 sets an adjustment amount for gain adjustment based on an instruction from the body side microcomputer 30, and thereby adjusts photographing sensitivity corresponding to ISO sensitivity.

  The body-side microcomputer 30 performs image processing such as white balance adjustment, color separation (interpolation), contour enhancement, and gamma correction on the captured image in the memory 28. The memory 28 is used and used by photometric image data output from the A / D converter 26, captured image data output from the A / D converter 26, and various processes executed by the body side microcomputer 30. Temporarily store generated data and the like.

  The storage medium 32 connected to the body side microcomputer 30 is composed of a memory card incorporating a semiconductor memory, a small hard disk or the like, and image processing is performed by the body side microcomputer 30 or a compression / decoding unit (not shown). Stores captured image data. The compression process is performed in a JPEG (Joint Photographic Experts Group) format or the like.

  Past photographed images stored in the storage medium 32 and real-time photographed images corresponding to subject light incident on the image sensor 20 can be displayed on a display 34 connected to the body side microcomputer 30. Is possible. The display 34 is attached to the back surface of the camera body 4.

  As shown in FIG. 2, the body side microcomputer 30 is connected to a position detection unit 40, a control unit 42, a panning determination unit 46, and a setting unit 48. The microcomputer 30 may include these.

  The position detection unit 40 is a circuit or a program for detecting the position of the subject included in the captured image captured by the image sensor 20, and is performed as shown in FIG. 6B, for example. That is, the captured image 52 captured by the image sensor 20 shown in FIG. 2 is divided as shown in FIG. 6B, the motion vector of each divided region is calculated, and the region with a small motion vector is divided into the subject 50. Detect as position.

  The control unit 42 shown in FIG. 2 controls the shake correction driving unit 10, and details thereof will be described later with reference to FIG. The panning detection unit 46 shown in FIG. 2 is a circuit or program that detects whether the camera 2 is in the panning state. In the panning detection unit 46, for example, based on the detection signal from the blur detection unit 12, as shown in FIG. 5, a blur detection signal exceeding a threshold value (+ Hd or -Hd) is detected for a predetermined time (for example, Ts × n). If it is detected continuously, or if a shake detection signal exceeding the threshold is detected a plurality of times in a predetermined time, it is determined that the shot is a panning shot.

  Alternatively, the panning detection unit 46 may detect that the panning is performed when a predetermined operation unit is operated. For example, the operation unit is exemplified by an operation switch provided on the side surface of the lens barrel, and by using this switch, the photographer sets a panning shot in the biting direction or a panning shot in the yawing direction. be able to.

  The setting unit 48 shown in FIG. 2 is a circuit or program for setting a predetermined range ΔQ including the position of the subject 50 in the captured image 52, as shown in FIGS. 7A and 7B. The predetermined range ΔQ may be automatically changed based on a predetermined algorithm, or may be manually changed based on an input signal from the operation unit of the camera body 4.

  For example, the setting unit 48 may set the predetermined range ΔQ corresponding to the size of the subject 50 of the captured image 52. For example, when the subject 50 is larger than the captured image 52, the predetermined range ΔQ may be reduced, and conversely, when the subject 50 is small, the predetermined range ΔQ may be increased. This is because when the subject 50 is small, a part of the subject 50 does not protrude from the captured image 52 even if the center of the subject 50 deviates from the center of the captured image 52 within the predetermined range ΔQ.

  The predetermined range ΔQ is preferably set along a direction (second axis Y in FIG. 7) different from the direction (first axis X in FIG. 7) in which the panning is detected. In general, the position of the subject 60 exceeds the predetermined range ΔQ because it is in a direction different from the direction in which the panning is detected.

  Next, based on FIG. 3 mainly, operation | movement of the control part 42 shown in FIG. 2 is demonstrated in detail. When the control starts, the control unit 42 performs composition determination processing in the pitch direction in step S100 shown in FIG. The composition determination process in the pitch direction is a process of determining whether or not the camera 2 is shot in the direction around the first axis X shown in FIG.

  Whether or not the camera 2 is panning around the first axis X is determined based on, for example, an angular velocity output signal from the first angular velocity sensor 12a shown in FIG. For example, as shown in FIG. 5, it is determined whether or not a panning shot in the pitch direction is determined based on whether or not an angular velocity signal exceeding a threshold value (+ Hd or −Hd) is continuously detected for a predetermined time (for example, Ts × n). .

  In the embodiment of FIG. 5, since the angular velocity in the pitch direction does not exceed the threshold value, in this case, it is determined that the panning is not in the pitch direction, and the process proceeds to step S101 shown in FIG. In step S101, it is determined that the change in angular velocity in the pitch direction is based on camera shake or the like, and an image blur correction operation in the pitch direction is performed. Specifically, the control unit 42 shown in FIG. 2 controls the shake correction drive unit 10 to drive the second actuator 10b so as to cancel the camera shake in the pitch direction, so that the correction lens 8a is perpendicular to the optical axis Z. The image is corrected in the second axis Y direction to perform image blur correction operation in the pitch direction.

  If it is determined in step S100 shown in FIG. 3 that the panning is in the pitch direction, the process goes to step S102. In step S102, the image blur correction operation in the pitch direction is stopped. This is because, in the case of panning in the pitch direction, if the image blur correction operation in the pitch direction is performed, a good captured image cannot be obtained.

  After step S101 and step S102, the control unit 42 performs composition determination processing in the yaw direction in step S103. The composition determination process in the yaw direction is a process for determining whether or not the camera 2 is shot in the direction around the second axis Y shown in FIG.

  Whether or not the camera 2 is panning around the second axis Y is determined based on, for example, an angular velocity output signal from the second angular velocity sensor 12b shown in FIG. For example, as shown in FIG. 5, it is determined whether or not a panning shot in the yaw direction is determined based on whether or not an angular velocity signal exceeding a threshold value (+ Hd or −Hd) is continuously detected for a predetermined time (for example, Ts × n). .

  In the embodiment of FIG. 5, since the angular velocity in the yaw direction exceeds the threshold value, in this case, it is determined that the panning is in the yaw direction, and the process proceeds to step S105. In step S105, the image blur correction operation in the yaw direction is stopped. This is because, in the case of panning in the yaw direction, if the image blur correction operation in the yaw direction is performed, a good captured image cannot be obtained.

  If it is determined in step S103 shown in FIG. 3 that the panning is not in the yaw direction, the process proceeds to step S104. In step S104, the control unit 42 determines that the change in the angular velocity in the yaw direction is based on camera shake or the like, and performs an image blur correction operation in the yaw direction. Specifically, the control unit 42 shown in FIG. 2 controls the shake correction drive unit 10 to drive the first actuator 10a so as to cancel the camera shake in the yaw direction, so that the correction lens 8a is perpendicular to the optical axis Z. The image is corrected in the first axis X direction, and the image blur correction operation in the yaw direction is performed.

  After steps S104 and S105, in step S106, the control unit 42 shown in FIG. 2 determines whether the composition is determined for only one axis. The composition determination of only one axis is a case where only a panning shot in the yaw direction is detected and no panning shot in the pitch direction is detected as shown in FIG. Or, conversely, only a panning shot in the pitch direction is detected and no panning shot in the yaw direction is detected. If composition determination for only one axis is not detected in step S106, step S100 and subsequent steps are repeated.

  In the following description, for example, as shown in FIG. 5, it is assumed that only a panning shot in the yaw direction is detected and no panning shot in the pitch direction is detected. In such a case, it is determined that the composition is only one axis, and the process goes to step S107. In step S107, the center position of the main subject is calculated. The center position of the main subject is obtained, for example, as follows.

  That is, the captured image 52 captured by the image sensor 20 shown in FIG. 2 is divided as shown in FIG. 6B, the motion vector of each divided region is calculated, and the region with a small motion vector is divided into the subject 50. Detect as position. Then, the area of the subject 50 is obtained by a general image processing technique, and the center region 60 or the center position is calculated as shown in FIG.

  Next, in step S108 shown in FIG. 3, the control unit 42 shown in FIG. 2 determines whether or not the composition determination axis is coaxial with the previous time. That the composition determination axes are the same is whether or not the panning is continued in the same direction. If not, the process returns to step S100. If the panning is continued in the same direction, the process goes to step S109. Whether or not the panning is continued in the same direction is determined based on, for example, whether or not the composition of only one axis determined in step S106 has changed from the yaw direction to the pitch direction or vice versa. . If there is no change, it can be determined that the panning is continued in the same direction.

  In step S109, whether or not the change ΔP (see FIG. 4C) of the center position or the center area 60 of the main subject 50 obtained in step S107 exceeds the predetermined range ΔQ shown in FIG. Is determined by the control unit 42. If not, the process returns to step S100 shown in FIG. If the change ΔP (see FIG. 4C) of the center position or the center region 60 of the main subject 50 exceeds the predetermined range ΔQ shown in FIG. 7C, only one axis is set in step S106. Even if the composition determination is made, the process goes to step S110 to stop the blur correction operation on both the first axis and the second axis.

  That is, for example, even when the panning determination is made only in the yaw direction in step S106, the change ΔP of the center position or the center area 60 of the main subject 50 shown in FIG. 4C (see FIG. 4C). ) Exceeds the predetermined range ΔQ shown in FIG. 7C, the control unit 42 sends a drive signal to the blur correction drive unit 10 to stop the blur correction in the pitch direction.

  As a result, even if the panning is performed in an oblique direction located between the first axis X and the second axis of the camera 2 shown in FIG. 1 and the panning only in the yaw direction is detected, FIG. As shown in (B), the deviation from the center of the captured image 52 of the main subject 50 based on the camera shake correction in the pitch direction is reduced. Even when a panning shot is detected only in the pitch direction, deviation from the center of the captured image 52 of the main subject 50 based on the shake correction in the yaw direction is reduced.

  Further, in the camera 2 of the present embodiment, when panning is performed only in the pitch direction or the yaw direction, not in the oblique direction, the blur correction control is continuously performed in the other directions, thereby An effective panning image can be obtained without the subject 10 deviating from the center of the captured image.

  The present invention is not limited to the above-described embodiment, and can be variously modified within the scope of the present invention.

  For example, in the above-described embodiment, the blur correction for both axes is stopped in step S110 shown in FIG. 3, but the present invention is not limited to this. For example, when the image blur correction in the yaw direction is stopped in step S105 and only the panning operation in the yaw direction is detected in step S106, in step S110, the blur correction in the pitch direction is not completely stopped. You may control so that it may weaken. Or, conversely, if the image blur correction in the pitch direction is stopped in step S102 and only the panning operation in the pitch direction is detected in step S106, the blur correction in the yaw direction is completely stopped in step S110. You may control so that it may become weak.

  As another embodiment of the present invention, in step S102 or step S105, the control unit 42 shown in FIG. 2 does not completely stop the shake correction control in the yaw direction or the pitch direction by the shake correction drive unit 10. It may be controlled to weaken. In that case, in step S110, control is performed so as to weaken the shake correction control in the yaw direction or the pitch direction by the shake correction drive unit 10 without completely stopping without stopping the shake correction of both axes. May be.

  Note that weakening the blur correction control means, for example, reducing the moving acceleration of the correction lens 8a shown in FIG. 1 by multiplying the control gain during the normal blur correction operation in step S101 or step S104 by a coefficient of 1 or less. It is conceivable to reduce the amount of movement.

  In the above-described embodiment, the image blur correction is performed by moving the correction lens 8a in the first axis X and second axis Y directions. However, the present invention is not limited to this. For example, the present invention is also applicable to an apparatus that performs image blur correction by moving the image sensor 20 in the first axis X and second axis Y directions without moving the correction lens 8a in the first axis X and second axis Y directions. can do.

  Furthermore, the blur correction device of the present invention may be used in an electronic blur correction (VR) device. For example, instead of the optical member that moves in the first direction and the second direction, an image processing unit that moves the cutout position of the image in the first direction and the second direction may be provided. In this case, camera shake correction can be performed electronically using the image processing unit.

  The blur correction device of the present invention can be mounted not only on the single-lens reflex camera described above, but also on a compact camera, other cameras, or other optical devices.

FIG. 1 is a schematic perspective view of a camera according to an embodiment of the present invention. FIG. 2 is a block diagram of the camera shown in FIG. FIG. 3 is a flowchart showing an example of the control of the shake correction apparatus according to the embodiment of the present invention. 4A to 4C are schematic views showing panning in an oblique direction. FIG. 5 is a graph showing temporal changes in blur (angular velocity) in the yaw direction and pitch direction. FIGS. 6A to 6C are diagrams for explaining means for detecting the position of the subject. 7A and 7B are diagrams illustrating a predetermined range including the position of the subject.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 ... Camera 4 ... Camera body 6 ... Lens barrel 8a ... Correction lens 10 ... Shake correction drive part 10a ... 1st actuator 10b ... 2nd actuator 12 ... Shake detection part 12a ... 1st angular velocity sensor 12b ... 2nd angular velocity sensor 20 Image sensor 30 ... Body side microcomputer 40 ... Position detection unit 42 ... Control unit 46 ... Panning detection unit 48 ... Setting unit 50 ... Subject 52 ... Captured image

Claims (11)

An optical member movable in a first direction and a second direction intersecting the first direction;
A blur correction drive unit capable of correcting blur in the first direction and blur in the second direction of the captured image by driving the optical member;
A position detection unit for detecting the position of a subject included in the captured image;
A setting unit for setting a predetermined range including the position of the subject in the captured image;
When a panning shot along one of the first direction and the second direction is detected, blur correction is reduced in one of the first direction and the second direction, and the subject in the shot image is reduced. A blur correction unit including a controller that controls the blur correction driving unit to reduce blur correction in the other of the first direction and the second direction when the position exceeds the predetermined range. apparatus. The blur correction device according to claim 1,
The blur correction device, wherein the setting unit sets the predetermined range along the other of the first direction and the second direction in the captured image. The blur correction device according to claim 1 or 2,
When the control unit detects a panning shot along one of the first direction and the second direction, the control unit stops correction of blur in one of the first direction and the second direction, and in the shot image When the position of the subject exceeds the predetermined range, the blur correction device controls the blur correction drive unit to stop the blur correction for the other in the first direction and the second direction. The blur correction device according to any one of claims 1 to 3, wherein
The shake correction apparatus according to claim 1, wherein the control unit includes a panning detection unit that detects a panning when the predetermined blur or more occurs in one of the first direction and the second direction. The blur correction device according to any one of claims 1 to 4, wherein
The shake correction apparatus according to claim 1, wherein the control unit includes a panning detection unit that detects a panning when a predetermined operation unit is operated. An optical member capable of correcting blurring of a captured image by moving in a first direction and a second direction intersecting the first direction;
A position detection unit for detecting the position of a subject included in the captured image;
A setting unit for setting a predetermined range including the position of the subject in the captured image;
A blur detection unit that detects that a predetermined blur or more has occurred in one of the first direction and the second direction;
When it is detected by the blur detection unit that the blur more than the predetermined has occurred in one of the first direction and the second direction, correction of blur occurring in one of the first direction and the second direction is performed. A blur correction unit that reduces the blur correction that occurs in the other of the first direction and the second direction;
A control unit that controls the blur correction unit so as to reduce the correction of the blur that occurs in the other of the first direction and the second direction when the position of the subject in the captured image exceeds the predetermined range. A blur correction apparatus characterized by the above. The shake correction apparatus according to claim 6,
The blur detection unit includes a first blur detection unit that detects that a predetermined blur or more has occurred in the first direction, and a second blur detection unit that detects that a predetermined or greater blur has occurred in the second direction. Including
The blur correction device, wherein the first blur detection unit and the second blur detection unit each independently detect that a predetermined blur or more has occurred. The blur correction device according to any one of claims 1 to 7, wherein
The position detection unit divides a screen of an image captured based on the subject light, calculates a motion vector of each divided region, and detects a region having a small motion vector as the position of the subject. Shake correction device. The blur correction device according to any one of claims 1 to 8,
The blur correction apparatus, wherein the setting unit sets the predetermined range corresponding to the size of the subject. The blur correction device according to any one of claims 1 to 9, wherein
The blur correction apparatus, wherein the optical component includes a correction lens or an image sensor.   An optical device comprising the shake correction device according to claim 1.

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