JPH10153809A - Image blur correcting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adequately correct image blur while preventing unnatural image blur after finishing intentional pan and tilt. SOLUTION: The output signal of an X direction gyro sensor is A/D converted, eliminated in terms of a low-frequency component, integrated by an integrating part 52, and inputted to a correcting angle limiting part 57 and an HPF 53 as an angle signal Ex1 . The HPF 53 generates a blur component signal Ex2 obtained by removing an intentional pan component from the signal Ex1 . A detecting part 54 detects the signal Ex2 , and an LPF 55 smoothes the output signal from the part 54 so as to generate a level signal Ex3 . An angle limiting data table 56 decides an angle limiting range corresponding to the level signal Ex3 , the part 57 limits the signal Ex1 in accordance with the angle limiting range, and outputs it as an X direction angle control signal Vref .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image blur correcting device for correcting an image blur in an image pickup device such as a video camera.

[0002]

2. Description of the Related Art In recent years, in imaging devices such as video cameras,
2. Description of the Related Art An image blur correction device for correcting an image blur caused by a vibration such as a hand shake of an operator has been put to practical use. As one method of image shake, a detection device for detecting shake of the image pickup device is provided in the image pickup device, and the bending angle of the optical axis is changed in the image pickup optical system, for example, by changing the vertex angle of a prism. There is a method in which a correction optical system capable of changing the optical axis is provided, and the servo circuit controls the correction optical system based on the output of the detection device to control the bending angle of the optical axis. In this method, an angular velocity sensor such as a gyro sensor is used as a detection device for detecting the shake of the imaging device.

[0003]

As described above, when a shake is detected using a detecting device such as an angular velocity sensor, a signal output from the detecting device includes a shake to be corrected such as a hand shake. In addition to the signal caused by the above, a signal caused by intentional pan (shaking the video camera or the like in the horizontal direction) or tilt (shaking the video camera or the like in the vertical direction) is also included. Therefore, when intentional pan / tilt is performed, image blur correction is performed shortly after the start of intentional pan / tilt until the bending angle of the optical axis reaches the limit point of the correction range. Is bent (fixed) at the limit point of the correction range. After the end of the pan / tilt, it is necessary to return the bending angle of the optical axis to the vicinity of the center of the correction range. In fact, such control is performed, but the bending angle of the optical axis is corrected after the end of the pan / tilt. The operation of returning to the vicinity of the center of the range means an unnatural image shake after the end of the pan / tilt, and gives an uncomfortable feeling to the operator.

Therefore, by performing processing such as filtering, a signal component caused by a shake to be corrected and a signal component caused by intentional pan / tilt should be separated from the output signal of the detection device and corrected. It is also conceivable to perform image shake correction based only on signal components caused by shake. However, in general, the frequency components of image shake are distributed in about 0.5 to 30 Hz, but signal components caused by intentional pan / tilt are also included in this frequency band. It is difficult to completely separate a signal component caused by intentional pan and tilt.

The present invention has been made in view of such a problem, and an object of the present invention is to appropriately correct image shake while preventing unnatural image shake after intentional pan and tilt ends. It is an object of the present invention to provide an image blur correction device that can be used.

[0006]

According to the present invention, there is provided an image shake correcting apparatus comprising: a shake detecting means for detecting a shake which causes an image shake; and a correcting means for correcting the image shake based on a detection output of the shake detecting means. A shake component signal generating means for generating a shake component signal obtained by removing intentional pan / tilt components from a detection output of the shake detection means, and a shake component signal generated by the shake component signal generating means in accordance with a level of the shake component signal. And a correction restricting means for restricting a correction range by the correcting means.

In this image shake correcting apparatus, the shake which causes image shake is detected by the shake detecting means, and the image shake is corrected by the correcting means based on the detection output of the shake detecting means. Further, the shake component signal generation unit generates a shake component signal in which intentional pan / tilt components are removed from the detection output of the shake detection unit,
According to the level of the shake component signal generated by the shake component signal generation means, the correction range of the correction means is limited.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings.

First, a schematic configuration of a video camera including an image blur correction device according to the present embodiment will be described with reference to FIGS. FIG. 2 shows a schematic configuration of the video camera viewed from above, and FIG. 3 shows an appearance of the video camera viewed from the side. The video camera includes a housing 10, in which an imaging device 11 using, for example, a CCD (charge coupled device) and an imaging optics (not shown) for forming a subject image on the imaging device 11. A system and a video amplifier 12 for processing an output signal of the image sensor 11 and converting the signal into a video signal are provided. A prism block 13 for optically correcting image shake is provided in the imaging optical system. The housing 10 further includes an X-direction gyro sensor 15 for detecting an angular velocity in the X-direction of the video camera to detect a shake in the left-right direction (hereinafter, referred to as an X-direction) of the video camera. A Y-direction gyro sensor 16 that detects the angular velocity of the video camera in the Y-direction to detect a shake in the direction (hereinafter, referred to as a Y-direction) is provided.

FIG. 4 is a perspective view showing the structure of the prism block 13. As shown in FIG. The prism blocks 13 are both transparent,
The two glass plates 21 and 22 have the same refractive index and are formed, for example, in a rectangular shape so that the X-direction correction glass plate 21 and the Y-direction correction glass plate 22 face the two glass plates 21 and 22.
A bellows 23 that flexibly connects between the glass plates 22 and 22 has substantially the same refractive index as the glass plates 21 and 22, and
And the liquid 2 filled in the space surrounded by the bellows 23
5 (see FIG. 2), an X-direction correction motor 26 for rotating the glass plate 21 in the X direction, and a Y-direction correction motor 27 for rotating the glass plate 22 in the Y direction. I have.

In the prism block 13, the glass plates 21 and 22, the bellows 23 and the liquid 25 constitute a prism whose apex angle is variable. When the glass plates 21 and 22 are arranged in parallel, the optical axis 19 (see FIGS. 2 and 3) from the subject 18 (see FIG. 3) to the image sensor 11 is not bent by the prism block 13, but is corrected in the X direction. When the glass plate 21 is turned by the motor 26 for use to make the glass plates 21 and 22 non-parallel, the optical axis 19 is bent in the X direction by the prism block 13 and the glass plate 22 is When the glass plates 21 and 22 are turned to be non-parallel, the optical axis 19 is bent in the Y direction by the prism block 13. The bending direction and angle of the optical axis depend on the rotation direction and angle of the glass plates 21 and 22.

FIG. 5 is a block diagram showing a schematic configuration of a servo system of the image blur correction device according to the present embodiment.
As shown in FIG. 5A, the servo system of the image blur correction device is attached to an X-direction correction motor 26, and by detecting the rotational position of the motor 26, the angle of the X-direction correction glass plate 21 is detected. Plate angle sensor 3 for detecting
1 and the output of the X-direction gyro sensor 15 are passed through a high-pass filter (hereinafter, referred to as HPF), integrated to generate an angle signal, and the angle signal and the glass plate angle sensor 3 are integrated.
And a servo circuit 32 that generates a glass plate angle error signal corresponding to the difference between the two outputs and drives the motor 26 based on the error signal. In addition,
The angle signal generated in the servo circuit 32 corresponds to the angle of the X-direction shake of the video camera, and the angle at which the X-direction correction glass plate 21 should be rotated in order to correct the image shake caused by the shake. The corresponding signal.

As shown in FIG. 5B, the servo system of the image blur correction device is further mounted on a Y-direction correction motor 27, and by detecting the rotational position of the motor 27, the Y-direction correction motor 27 is rotated. The output of the glass plate angle sensor 33 for detecting the angle of the glass plate 22 and the output of the Y-direction gyro sensor 16 are passed through the HPF, and then integrated to generate an angle signal.
A servo circuit 34 that compares the angle signal with the output of the glass plate angle sensor 33, generates a glass plate angle error signal corresponding to the difference between the two, and drives the motor 27 based on the error signal. . The angle signal generated in the servo circuit 34 corresponds to the shake angle of the video camera in the Y direction, and the glass plate 22 for correcting the Y direction should be rotated in order to correct the image shake due to the shake. This is a signal corresponding to the angle.

FIG. 1 is a block diagram showing a configuration of a servo circuit in the image blur correction device according to the present embodiment. The servo circuit 32 includes an A / D conversion unit 41X that performs A / D conversion of an output signal of the X-direction gyro sensor 15, and the A / D conversion unit 41X.
An X-direction angle signal generation unit 42X that integrates an output signal of the / D conversion unit 41X to generate an X-direction angle signal; an output signal of the X-direction angle signal generation unit 42X and an output signal of the glass plate angle sensor 31; X that drives the motor 26 based on
And a direction drive control unit 43X. Similarly, the servo circuit 34 outputs the output signal of the Y-direction gyro sensor 16 to A
A / D conversion unit 41Y for performing an A / D conversion, a Y direction angle signal generation unit 42Y for integrating an output signal of the A / D conversion unit 41Y to generate a Y direction angle signal, and a Y direction angle signal generation unit A Y-direction drive control unit 43Y that drives the motor 27 based on the output signal of 42Y and the output signal of the glass plate angle sensor 33 is provided. X direction angle signal generator 42
The X and Y direction angle signal generation units 42Y are constituted by, for example, a common CPU (central processing unit) 45. A ROM (read only memory) and a RAM (random access memory) are connected to the CPU 45, and the CPU 45 executes a program stored in the ROM using the RAM as a working area to generate an X-direction angle signal. The functions of the section 42X and the Y-direction angle signal generation section 42Y are realized.

The X-direction angle signal generation section 42X and the X-direction drive control section 43X have the same configuration as the Y-direction angle signal generation section 42Y and the Y-direction drive control section 43Y. Only the section 42X and the X-direction drive control section 43X will be described in detail.

The X-direction angle signal generation section 42X is provided with an A signal for removing a DC drift component of the X-direction gyro sensor 15.
/ D from the output signal of the converter unit 41X and HPF 51 to remove low-frequency components, an integration unit 52 for generating an angle signal Ex ₁ by integrating the output signal of the HPF 51, the integrator 52
By removing the low frequency components than the angle signal Ex ₁ output from an intentional generating a component signal Ex ₂ shake to remove pan and tilt components HPF53 from the angle signal Ex _1, deflection output from the HPF53 the component signal Ex ₂ and the detection unit 54 for full-wave rectification (detection), the output signal of the detection section 54 is smoothed, the low-pass filter (hereinafter to generate a level signal Ex ₃ corresponding to the level of the shake component signals Ex ₂ , referred to as LPF.) and 55, the angle limiting data table 56 to determine this by entering the level signal Ex ₃ which is output from the LPF 55, the angle limiting range theta _LMT corresponding to the level signal Ex _3, the angle limiting data table In accordance with the angle limit range θ _LMT determined by 56, the integration unit 5
2 places restrictions with respect to the angle signal Ex ₁ output from, and a correction angle limiting unit 57 for outputting the X-direction angle control signal V _ref.

The cut-off frequency of the HPF 51 is, for example, about 0.1 Hz, whereas the cut-off frequency of the HPF 53 is a value, for example, about 1 Hz that can intentionally remove a pan component. In addition, the integration unit 52
Sets the upper limit value and the lower limit value of the angle signal Ex _1, the angle signal E within the limits stipulated by the upper limit value and the lower limit value
It is adapted to output the x _1. Here, the upper limit value of the angle signal Ex ₁ + theta, a lower limit value to - [theta]. Angle restriction data table 56 is a table storing correspondence relationship between the value of the level signal Ex ₃ and angular limits theta _LMT.
The angle limits theta _LMT is a plurality of stages (for example, about 10 stages) set, the more so as the angle limits theta _LMT increases the larger the value of the level signal Ex _3, the angle limiting data table 56 is set. Correction angle limiter 57
Compares the angular limits theta _LMT determined by the angle signal Ex ₁ and the angle restriction data table 56 that is output from the integrator 52, the value of the angle signal Ex ₁ so that the angle limits theta _LMT Limiting the X-direction angle control signal V
Output as _ref .

The X-direction drive control unit 43X converts the angle control signal output from the correction angle limit unit 57 from digital to analog (hereinafter, referred to as D / A) D / A converter 5.
8, an amplifier 59 for amplifying the output signal of the glass plate angle sensor 31, an output signal of the D / A converter 58 and the amplifier 59
A comparison circuit 60 that compares the output signals of the two with each other and generates a signal corresponding to the difference between them, an amplifier 61 that amplifies the signal generated by the comparison circuit 60 and outputs the amplified signal as a glass plate angle error signal, A motor drive circuit 62 for driving the motor 26 based on the output signal of the amplifier 61;

Next, the operation of the image blur correction apparatus according to the present embodiment will be described. In this image shake correction apparatus, the X-direction gyro sensor 15 detects the angular velocity of the video camera in the X direction, and the glass plate angle sensor 31 detects the angle of the X-direction correction glass plate 21.
Each output signal of the direction gyro sensor 15 and the glass plate angle sensor 31 is input to the servo circuit 32. Similarly, the Y-direction gyro sensor 16 detects the angular velocity of the video camera in the Y-direction, and the glass plate angle sensor 33 detects the Y-direction angular velocity.
The angle of the direction correcting glass plate 22 is detected, and each output signal of the Y-direction gyro sensor 16 and the glass plate angle sensor 33 is input to the servo circuit 34.

In the servo circuit 32, the output signal of the X-direction gyro sensor 15 is A / D converted by an A / D converter 41X.
It is D-converted and input to the X-direction angle signal generator 42X. Similarly, in the servo circuit 34, the output signal of the Y-direction gyro sensor 16 is A / D converted by the A / D converter 41Y.
It is D-converted and input to the Y-direction angle signal generator 42Y.

The operation of the CPU 45 relating to the function of the X-direction angle signal generator 42X will now be described with reference to the flowchart of FIG. In this operation, first, the CPU 45 inputs the A / D converted output signal of the X-direction gyro sensor 15 from the A / D converter 41X (step S10).
1) The HPF 51 performs an HPF calculation process on this signal to remove low frequency components (step S10).
2) Next, the integration unit 52, and generates an angle signal Ex ₁ by integrating the output signal of the HPF 51 (step S1
03). Then, CPU 45 may, by HPF 53, performs HPF processing with respect to the angle signal Ex _1, generates a vibration component signal Ex ₂ (step S104). next,
The CPU 45 performs full-wave rectification (detection) of the shake component signal Ex ₂ output from the HPF 53 by the detection unit 54, and further performs LPF calculation processing on the output signal of the detection unit 54 by the LPF 55 to perform the level signal Ex _3. Is generated (step S105). Then, CPU 45 uses the angle limiting data table 56, determines the angular limits theta _LMT in accordance with the value of the level signal Ex ₃ which is output from the LPF 55 (step S106). Next, the CPU 45
By the correction angle limiting unit 57 compares the angle signal Ex ₁ and the angle limits theta _LMT, so that the angular limits theta _LMT limits the value of the angle signal Ex ₁ (step S10
7) Output as an X-direction angle control signal _Vref (step S108). Thus, the shake component signal Ex ₂
, The correction range in the X direction is limited.

The CPU 45 includes a Y-direction angle signal generator 42.
As for the function of Y, the same operation as that of the X-direction angle signal generation unit 42X shown in FIG. 6 is performed. X direction angle signal generator 4
The operation related to the function of the 2X and Y direction angle signal generation unit 42Y is repeatedly started by interrupts that are periodically generated.

An X-direction angle signal generator 42X (CPU 4
The X direction angle control signal _Vref output from 5) is input to the X direction drive control unit 43X. X direction drive control unit 4
In 3X, the X-direction angle control signal _Vref is D / A-converted by the D / A converter 58, the output signal of the glass plate angle sensor 31 is amplified by the amplifier 59, and the comparison circuit 60
As a result, the output signal of the D / A converter 58 and the output signal of the amplifier 59 are compared, a signal corresponding to the difference between them is generated, and this signal is amplified by the amplifier 61, and the motor drive is performed as a glass plate angle error signal. It is provided to a circuit 62. Then, the motor 26 is driven by the motor drive circuit 62 according to the glass plate angle error signal. In this way, X
The image shake in the X direction is corrected so that the direction correcting glass plate 21 is rotated, and the optical axis 19 from the subject 18 to the image sensor 11 is constant with respect to the subject 18.

Similarly, the Y-direction angle signal generator 42Y (C
PU45), the Y-direction angle control signal is input to the Y-direction drive control unit 43Y, and the Y-direction drive control unit 43Y
The Y-direction angle control signal and the glass plate angle sensor 3
The motor 27 is driven based on the third output signal. In this way, the Y-direction correcting glass plate 22 is rotated in response to the Y-direction shake of the video camera, and the image shake in the Y direction is corrected.

Here, the operation of limiting the correction range in the image blur correction apparatus according to the present embodiment will be specifically described with reference to FIGS. FIG. 7 is a diagram for comparison with the image blur correction apparatus according to the present embodiment, in which the HPF 53, the detection unit 54, the LPF 55, the angle limit data table 56, and the correction angle limit unit 57 in FIG. 5 illustrates an example of a temporal change of a correction angle of an optical axis when performing a pan. In this case, the angle signal E output from the integration section 52 in FIG.
The value of x ₁ is directly corresponding to the correction angle of the optical axis. In addition,
In FIG. 7, time P is the time when intentional panning starts, and time Q
Represents the intentional ending of the pan, and the time from time P to time Q is the pan operation time T. In the example shown in FIG.
Shortly after the intentional panning starts, the correction angle is changed to the angle signal E.
the upper limit of x ₁ + theta (or the lower limit value - [theta]) to stick (fixed) behavior. After the intentional bread is over,
The correction angle becomes smaller in accordance with the time constant of the integration unit 52, and in the example shown in FIG. Accordingly, in the region S having a certain value of the correction angle from the time Q to the time R, an unnatural image shake occurs, giving an uncomfortable feeling to the operator.

On the other hand, FIG. 8A shows an example of a temporal change of the correction angle of the optical axis when intentional panning is performed in the image blur correction apparatus according to the present embodiment. is there. Further, FIG. 8 (b), illustrates an example of a temporal change component signals Ex ₂ runout at the same timing as FIG. 8 (a). In this case, the value of the X-direction angle control signal _Vref output from the correction angle limiter 57 in FIG. 1 corresponds to the correction angle of the optical axis. In FIG. 8A, time P1 indicates the start of intentional panning, time Q1 indicates the end of intentional panning, and the time from time P1 to time Q1 is the pan operation time T1. In the example shown in FIG. 8 (a), as indicated by a broken line, an angle signal Ex ₁ that is output from the integrating unit 52, a short time after the start of intentional pan, the upper limit value + theta (or the lower limit value - θ).

In this embodiment, the HPF 53
By removing the low frequency component, that intentional panning component from the angle signal Ex _1, shake obtain component signal Ex ₂ as shown in Figure 8 (b). Peak level θx of the vibration component signal Ex ₂ is one of the angle signal Ex _1, the peak level of the signal component due to vibration to be corrected, such as a hand shake. In this embodiment, the shake component signal Ex ₂ is further subjected to full-wave rectification (detection) by the detection unit 54, and LP
Obtaining a level signal Ex ₃ is smoothed by F55. The value of the level signal Ex ₃ is shake component signal Ex ₂ the peak level [theta] x, i.e. corresponding to the peak level of the signal component due to vibration to be corrected, such as a hand shake. And in the present embodiment, the angle limited by the data table 56, the level signal angular limits depending on the value of Ex ₃ theta _LMT
Determines, by correcting the angle limiting unit 57 limits the value of the angle signal Ex ₁ so that the angle limits theta _LMT,
An X-direction angle control signal _Vref is used. In the example shown in FIG. 8, for simplicity, the angle limit range θ _LMT has two stages,
If the value of the level signal Ex ₃ exceeds the predetermined value +
A wide range θ _LMT1 from θ to −θ, and the level signal Ex ₃
Is smaller than the predetermined value, the range θ narrower than θ _LMT1
LMT2 .

As shown in FIG. 8A, when intentional panning is started, the value of the angle signal Ex ₁ increases,
The fluctuation is small. The image shake correction apparatus according to the present embodiment uses this feature to limit the X-direction angle control signal _Vref during intentional panning. FIG.
As shown in (b), when intentional bread starts,
The peak level θx of the shake component signals Ex ₂ becomes smaller, the value of the level signal Ex ₃ is also small. As a result, as shown in FIG. 8A, the angle limit range θ _LMT is narrowed compared to when the intentional pan is not performed. FIG.
In the example shown in (a), the angle limiting range is narrowed from θ _LMT1 to θ _LMT2 slightly after the intentional start of panning, and the X-direction angle control signal V _ref is limited from time P2. The setting of the angle limit range θ _LMT2 is continued until intentional panning ends. As a result, during intentional breading,
The X-direction angle control signal _Vref is limited to be within the angle limit range θ _LMT . After the intentional pan is completed, the correction angle becomes smaller in accordance with the time constant of the integration unit 52, and FIG.
In the example shown in (a), at time R1, the correction angle returns to the vicinity of the center of the correction range (+ θ to -θ).

As can be seen by comparing FIG. 7 and FIG. 8A, according to the image blur correction apparatus according to the present embodiment,
At the time of intentional panning, the X-direction angle control signal _Vref is limited so as to be within the narrow angle limit range θ _LMT . Therefore, after the intentional pan is completed, the correction angle is changed to the correction range (+ θ to-
The time required to return to the vicinity of the center of θ) and the amount of change in the correction angle are smaller than those in the example shown in FIG. In other words, in FIG. 8, a region S1 having a certain value of the correction angle between time Q1 and time R1 after the intentional ending of the panning.
Is smaller than the region S in FIG. Therefore, according to the image shake correction apparatus according to the present embodiment, unnatural image shake after intentional ending of panning can be prevented, and discomfort given to the operator can be significantly reduced. Although the description is omitted, the same applies to the case where intentional tilt is performed.

Further, according to the image blur correction apparatus according to this embodiment. Thus changing the angle limits theta _LMT in accordance with the value of the level signal Ex _3, intentional pan and tilt components from the angle signal It is possible to appropriately set the size of the angle limit range according to the magnitude of the shake component after removing, and as a result, it is possible to appropriately correct the image shake. For example, even though the shake component after intentionally removing the pan / tilt component from the angle signal is large, the angle signal is unnecessarily limited and the image shake is not sufficiently corrected. Absent.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the output of the integrator 52 is input to the HPF 53, but the A / D converter 41
The output of X and the output of HPF 51 may be input to HPF 53.

As a mechanism for correcting image blur,
The correction optical system capable of bending the optical axis by moving the lens in a direction orthogonal to the optical axis is not limited to the one using a prism with a variable apex angle as in the prism block 13 described in the embodiment. Etc. may be used. Also,
The shake detecting means is not limited to the one using the angular velocity sensor, but may be one using an acceleration sensor or the like.

The image blur correction device of the present invention may be integrated into a video camera or the like, or may be an adapter type that is detachably attached to the video camera or the like. In addition, the present invention is not limited to a video camera, and can be applied to other types of imaging devices such as a still camera and a camera using a movie film.

[0034]

As described above, according to the image shake correcting apparatus of the present invention, the shake component signal generation means generates the shake component signal from which the intentional pan / tilt component has been removed from the detection output of the shake detection means. Since the correction range of the correction means for correcting the image shake is limited according to the level of the shake component signal, unnatural image shake after intentional pan or tilt ends is prevented. However, there is an effect that the image blur can be appropriately corrected.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a servo circuit in an image shake correction apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating a schematic configuration of a video camera including an image shake correction device according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a state where the video camera shown in FIG. 2 is viewed from a side.

FIG. 4 is a perspective view showing a configuration of a prism block in FIG. 2;

FIG. 5 is a block diagram illustrating a schematic configuration of a servo system of the image shake correction apparatus according to the embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of the CPU in FIG. 1;

FIG. 7 is an explanatory diagram for describing an operation of limiting a correction range in the image shake correction device according to the embodiment of the present invention.

FIG. 8 is an explanatory diagram for describing an operation of limiting a correction range in the image shake correction apparatus according to the embodiment of the present invention.

[Explanation of symbols]

13: prism block, 15: X-direction gyro sensor, 16: Y-direction gyro sensor, 26: X-direction correction motor, 27: Y-direction correction motor, 31, 33: glass plate angle sensor, 32, 34: servo circuit , 42X ... X
Direction angle signal generation unit, 42Y ... Y direction angle signal generation unit,
43X: X direction drive control unit, 43Y: Y direction drive control unit, 45: CPU, 53: HPF, 54: Detection unit, 55
... LPF, 56 ... Angle limit table, 57 ... Correction angle limiter

Claims (1)

[Claims] A shake detection unit configured to detect a shake that causes an image shake; a correction unit configured to correct the image shake based on a detection output of the shake detection unit; A shake component signal generating means for generating a shake component signal from which a pan / tilt component has been removed, and a correction limit for limiting a correction range of the correction means in accordance with the level of the shake component signal generated by the shake component signal generating means And an image blur correcting device.