JP2009069618A - Imaging apparatus, control program, and record medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an imaging apparatus capable of always giving an optimum image blur correction effect, regardless of the use condition of the imaging apparatus. <P>SOLUTION: The imaging apparatus includes: a first shake detection means 201; a second shake detection means 211; a calculation means 203 calculating a correction position control signal; a gain correction coefficient calculating means 303 calculating the gain correction coefficient of gain for adjusting the correction position control signal; a gain setting means 308 changing the gain; a correction means driven by the correction position control signal adjusted by the gain, to perform image blur correction; a panning operation judging means 309 judging whether or not panning operation is performed; and a switching means 310 switching whether or not the change of the gain by the gain correction coefficient is performed, according to the judgment result of the panning operation. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an imaging apparatus such as a digital camera or a video camera having an image blur correction function, a control program, and a recording medium.

  In an imaging device such as a digital camera or a video camera, a subject image (image) is shaken by a shake applied to the imaging device such as a camera shake, and the image is often difficult to see. Recently, a high-magnification lens has been adopted, and image blur is particularly noticeable especially on the telephoto side. Many image pickup apparatuses having a function for correcting image blur due to such camera shake have been proposed and commercialized.

  As a method for detecting shake of the entire imaging apparatus due to camera shake or the like, there are a sensor method for detecting a shake by a sensor and a method for detecting a shake by calculating a motion vector from the difference between the last two image signals taken. is there.

  In the sensor system, an angular velocity sensor is often used as a sensor. The angular velocity sensor vibrates a vibration material such as a piezoelectric element at a constant frequency, converts a force due to a Coriolis force generated by a rotational motion component into a voltage, and obtains angular velocity information. Then, the obtained angular velocity information is integrated, shake is calculated, and output as a corrected position control signal for image shake correction. As a result, the correction lens capable of optically moving the angle of view is moved in a direction to suppress the above-mentioned shake, and image shake correction is performed.

  On the other hand, in the motion vector method, an image of a subject projected through an imaging lens is detected by an imaging device, stored in a memory as an image signal, and the shake of the image is compared with the next detected image signal. Calculate as vector information. Then, a corrected position control signal for image blur correction is output from the calculated motion vector information. As a result, the correction lens capable of optically moving the angle of view is moved in a direction to suppress the above-mentioned shake, and image shake correction is performed.

  In the position control of the correction lens, feedback control for feeding back the correction lens position signal to the correction position control signal is performed. In general, feedback control uses a control method called PID control. D control (differential control) is used to improve the gain margin and phase margin of P control (proportional control) and improve the stability of feedback control. I control (integral control) is used to improve the offset characteristics of feedback control. Feedback control in which these P control, I control, and D control are selected and combined as necessary is called PID control.

Many devices for correcting image shake based on shake information from the sensor and motion vector information calculated from captured image signals have been proposed. For example, a gain for adjusting the correction position control signal based on shake information generated based on the angular velocity data from the angular velocity sensor and shake information generated based on the motion vector information from the motion vector calculation unit. A gain correction coefficient for correcting is calculated. An imaging apparatus that generates a gain based on the gain correction coefficient and enables an optimal image blur correction process has been proposed (for example, Patent Document 1). The gain is gain information for adjusting the correction position control signal as described above, the gain according to the focal length of the imaging unit, the magnification gain when the conversion lens is attached to the imaging unit, and the shake sensor Sensitivity gain according to sensitivity.
JP 2005-203861 A

  However, the conventional example has the following problems. It is assumed that a panning operation in which the imaging apparatus is shaken greatly is performed, such as when shooting a moving subject or adjusting the angle of view. Even if the gain correction coefficient is calculated at this time, the gain correction coefficient is not appropriately set during the panning operation and immediately after the end of the panning operation. For this reason, the gain is not appropriately set during the panning operation and immediately after the end of the panning operation, and a sufficient image blur correction effect cannot be obtained in the captured image.

  Even when the gain is set when the image blur correction operation is stopped, the gain immediately after the transition from the stop state of the image blur correction operation to the drive state is not set appropriately. Therefore, a sufficient image blur correction effect cannot be obtained in the photographed image.

(Object of invention)
An object of the present invention is to provide an imaging apparatus, a control program, and a recording medium that can always provide an optimal image blur correction effect regardless of the use state of the imaging apparatus.

  In order to achieve the above object, the present invention provides a first shake detection unit that detects a shake applied to an imaging device by a shake detection sensor, and a second shake that detects a shake from a motion vector calculated from an image signal from the imaging unit. Detection means; calculation means for calculating a correction position control signal for image shake correction based on shake information detected by the first shake detection means; the first shake detection means; and the second shake detection means. A gain correction coefficient calculating means for calculating a gain correction coefficient of a gain for adjusting the correction position control signal based on each shake information detected by the step, and changing the gain based on the gain correction coefficient. An image pickup apparatus comprising: gain setting means for performing image blur correction by being driven by the correction position control signal adjusted by the gain; Panning operation determining means for determining whether or not a panning operation is being performed, and switching means for switching whether or not to change the gain by the gain correction coefficient in accordance with the determination result of the panning operation. An imaging apparatus is provided.

  Similarly, in order to achieve the above object, the present invention calculates a shake applied to the imaging apparatus by the first shake detection means using a shake detection sensor, and is calculated by an image signal from the imaging means by the second shake detection means. Detecting a shake from the obtained motion vector, calculating a correction position control signal for image shake correction based on shake information detected by the first shake detection means, and the first shake detection means; A step of calculating a gain correction coefficient of a gain for adjusting the correction position control signal based on each shake information detected by the second shake detection means; and the gain based on the gain correction coefficient. According to the determination result of the panning operation, the step of determining whether or not the panning operation is performed, A control program having a step of switching whether or not to change the gain by an image correction coefficient, and a step of driving a correction means by the correction position control signal adjusted by the gain to perform image blur correction Is.

  In order to achieve the above object, the present invention is a recording medium on which the control program of the present invention is recorded.

  According to the present invention, it is possible to provide an imaging apparatus, a control program, or a recording medium that can always provide an optimal image blur correction effect regardless of the usage state of the imaging apparatus.

  The best mode for carrying out the present invention is as shown in Examples 1 and 2 below.

  FIG. 1 is a diagram illustrating an overall configuration of an image pickup apparatus having an image shake correction function according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 101 denotes a zoom unit having a zoom lens that performs zooming, and reference numeral 102 denotes a zoom drive control unit that drives and controls the zoom unit 101. Reference numeral 103 denotes a correction lens (unit) that can change the angle of view, reference numeral 104 denotes a correction lens drive control unit that drives and controls the correction lens 103, and reference numeral 105 denotes an aperture / shutter unit. Reference numeral 106 denotes an aperture / shutter drive control unit that drives and controls the aperture / shutter unit 105, 107 denotes a focus unit having a lens that performs focus adjustment, and 108 denotes a focus drive control unit that drives and controls the focus unit 107.

  109 is an imaging unit that converts an optical image that has passed through each lens group into an electrical signal, 110 is an imaging signal processing unit that converts an electrical signal from the imaging unit 109 into an imaging signal, and 111 is an imaging signal processing unit 110. It is a video signal processing unit that processes the image pickup signal according to the application. Reference numeral 112 denotes a display unit that displays a video signal from the video signal processing unit 111 as necessary, and reference numeral 113 denotes a power supply unit that supplies power according to the application used in the entire system. Reference numeral 114 denotes an external input / output unit that inputs and outputs external communication signals and video signals, and 115 denotes an operation unit for operating the system. A storage unit 116 stores various data such as video information, and a control unit 117 controls the entire system.

  Next, a schematic operation of the imaging apparatus having the above configuration will be described.

  The operation unit 115 includes a shutter release button configured so that the first switch and the second switch are sequentially turned on according to the amount of pressing. The first switch is turned on when the shutter release button is depressed approximately half, and the second switch is turned on when the shutter release button is depressed to the end.

  When the first switch is turned on, the control unit 117 performs focus adjustment by driving the focus unit 107 via the focus drive control unit 108 based on the imaging signal. At the same time, the aperture / shutter unit 105 is driven via the aperture / shutter drive control unit 106 and the imaging unit 109 is set to a state in which an appropriate exposure amount can be obtained. When the second switch is turned on, the control unit 117 stores the video information captured by the imaging unit 109 and obtained through the imaging signal processing unit 110 and the video signal processing unit 11 in the storage unit 116. Further, when the operation unit 115 instructs the image blur correction to be turned on during the above imaging, the control unit 117 instructs the correction lens drive control unit 104 to perform the image blur correction, and the image blur correction is turned off. Until the correction lens 103 is driven, that is, image blur correction is performed. Further, the still image mode and the moving image mode can be selected by the operation unit 115, and the operation conditions of each actuator can be changed in each mode.

  When there is an instruction for zooming magnification by the operation unit 115, the control unit 117 moves the zoom unit 101 to the instructed zoom position via the zoom drive control unit 102. At the same time, the focus unit 107 is driven via the focus drive control unit 108 based on the video information obtained via the imaging unit 109, the imaging signal processing unit 110, and the video signal processing unit 111 to perform focus adjustment.

  FIG. 2 is a block diagram showing a partial configuration of the correction lens drive control unit 104 and the control unit 117 shown in FIG.

  In FIG. 2, reference numeral 201 denotes a sensor unit in the pitch direction for detecting a shake applied in the vertical direction (pitch direction) at the normal position (lateral position), and 202 denotes a horizontal direction (yaw direction) at the normal position of the image pickup apparatus. This is a sensor unit in the yaw direction for detecting shake. Reference numerals 203 and 204 denote image stabilization control units, which perform image shake correction based on motion vector information calculated by a motion vector calculation unit 211 described later and shake information from the sensor units 201 and 202 in the pitch direction and yaw direction, respectively. A correction position control signal is generated.

  Reference numerals 205 and 206 denote PID units, which obtain control amounts from correction position control signals in the pitch direction and yaw direction, and correction lens position signals described later. Reference numerals 207 and 208 denote drive units that drive the correction lens 103 based on signals from the PID units 205 and 206. A position detection unit 209 includes a Hall element that detects the position of the correction lens 103 in the pitch direction and outputs a correction lens position signal in the pitch direction. A position detection unit 210 includes a Hall element that detects the position of the correction lens 103 in the yaw direction and outputs a correction lens position signal in the yaw direction.

  An image blur correction operation performed by the correction lens drive control unit 104 configured as shown in FIG. 2 will be described.

  The image shake correction operation is performed using shake information from the sensor units 201 and 202 and motion vector information in the pitch direction and yaw direction from the motion vector calculation unit 211. Specifically, based on these pieces of information, the correction lens 103 is moved by the correction position control signal from the image stabilization control units 203 and 204 so that the angle of view (image) does not change and moves in the direction opposite to the shake direction. Is done. In the position control of the correction lens 103, the magnet provided in the correction lens 103 is detected by a Hall element that is the position detection units 209 and 210. Then, feedback position control is performed so that the corrected lens position signal is matched with the corrected position control signals from the image stabilization controllers 203 and 204. Reference numeral 211 denotes a motion vector calculation unit that calculates motion vector information that is an image shake based on previous and current imaging signals from the imaging unit 109.

  Since the Hall element outputs of the position detection units 209 and 210 have individual variations, it is necessary to adjust the Hall element output so that the Hall element output moves to a predetermined correction lens position with respect to a predetermined correction position control signal. There is. At this time, the PID units 205 and 206 perform PID control using proportional control, integral control, and differential control.

  FIG. 3 is a block diagram showing a detailed configuration of the image stabilization control unit 203 shown in FIG. Here, an example in which an angular velocity sensor is used as the sensor unit 201 that outputs shake information to the image stabilization control unit 203 is shown. Since the image stabilization control unit 204 in FIG. 2 is the same, the details thereof are omitted.

  Reference numeral 301 denotes an A / D converter that converts a signal (angular velocity information) from an angular velocity sensor that is the sensor unit 201 into a digital signal, and 302 is an HPF (high-pass filter) that can change a cutoff frequency to cut a DC component. A gain correction coefficient calculation unit 303 calculates a gain correction coefficient based on angular velocity information that is shake information and motion vector information from the motion vector calculation unit 211. A gain setting unit 308 sets (changes) a gain to be a correction position control signal for performing appropriate image blur correction based on the gain correction coefficient. Reference numeral 304 denotes a phase lead filter (PLF) whose phase can be changed, and 305 is an HPF whose cutoff frequency can be changed. Reference numeral 306 denotes an LPF (low-pass filter) for converting angular velocity information into angle information, and reference numeral 307 denotes a cutoff switching unit that changes the cutoff frequency of the HPF 305 in accordance with a correction position control signal (image blur correction amount).

  Reference numeral 309 denotes a panning determination unit that determines whether or not a panning operation, which is an angle of view change operation that exceeds a specified shake amount in a certain direction, has been performed. It is determined whether or not the panning operation is in progress. If it is determined that the imaging apparatus is performing a panning operation that has been shaken larger than the specified shake amount (that is, the angle of view has been changed), the panning determination unit 309 turns off the switch 310. As a result, the gain set by the gain setting unit 308 based on the gain correction coefficient is not changed as will be described later. This is because if the gain is continuously changed with a large shake, it will deviate greatly from an appropriate gain. Note that the switch 310 is on until the panning operation is determined, and a gain corresponding to the gain correction coefficient corresponding to the magnitude of the view angle changing operation at that time is set. Specifically, the gain is set so that the gain decreases as the shake amount during the view angle change operation in one direction increases, and when the panning operation, which is a view angle change operation that exceeds the specified shake amount, is performed, the gain is changed. Will be stopped and the gain just before will be fixed.

  Angular velocity information, which is shake information input to the image stabilization control unit 203, is output to the PID unit 205 as a corrected position control signal by performing a series of these filter processes.

  FIG. 4 is a flowchart showing operations relating to gain correction coefficient calculation and gain setting performed by the gain correction coefficient calculation unit 303 and the gain setting unit 308 in FIG.

In step S <b> 101, angular velocity information is acquired from the sensor unit 201 and motion vector information is acquired from the motion vector calculation unit 211. Then, in the next step S102, the gain correction coefficient is obtained as follows: gain correction coefficient = (motion vector information) / (angular velocity information)
It is calculated by the following formula. In subsequent step S103, it is determined whether or not the gain correction coefficient calculated in step S102 is equal to or greater than a specified value. If the gain correction coefficient is equal to or greater than the specified value, it is determined that image blur correction is not sufficiently performed and the gain is not appropriate. Proceed to step S104. Then, the gain is changed (set) based on the gain correction coefficient. On the other hand, when the gain correction coefficient is less than the specified value, image blur correction is sufficiently performed, and it is determined that the gain is appropriate and the gain is not changed.

  Here, the gain correction coefficient will be described. The gain correction coefficient is a value serving as an index when the gain is changed until the gain correction coefficient at that time becomes smaller than a predetermined value. When the gain setting is increased, if the gain correction coefficient increases, the gain setting is decreased. If the gain correction coefficient increases when the gain setting is decreased, the gain setting is increased.

  Next, an outline of a series of operations including an image shake correction operation of the imaging apparatus configured as described above will be described with reference to a flowchart of FIG.

  When it is confirmed in step S201 that the camera is turned on, a series of operations including image blur correction operations in step S202 and subsequent steps are started. Here, the image blur correction operation is performed by an interrupt process that occurs at regular intervals (for example, 250 μsec). Then, control of the first direction, for example, the pitch direction (vertical direction) and the second direction, for example, the yaw direction (lateral direction) is performed.

  In step S202, the state of the image blur correction mode is determined. If the image blur correction mode is ON, the process proceeds to step S204. If the image blur correction mode is OFF, the process proceeds to step S203.

  When it is determined that the image blur correction mode is ON and the process proceeds to step S204, the panning determination unit 309 determines whether a panning operation is being performed. Specifically, it is determined whether or not the angular velocity information is equal to or less than a predetermined value for determining the angular velocity and whether or not the correction position is equal to or less than a predetermined value for determining the correction position. As a result, when both the angular velocity information and the correction position are equal to or smaller than a predetermined value, it is determined that the panning operation is not being performed. Specifically, since the correction position represents the lens control position, it can be said that when the correction position ≦ the predetermined value, the movement amount of the correction lens is small and the correction lens is near the center of the controllable range. Therefore, it is determined that the panning operation is not performed. Thereafter, the process proceeds to step S205, and as described in the flowchart of FIG. 4, a gain correction coefficient is calculated based on the angular velocity information and the motion vector information, and the gain is set based on the gain correction coefficient. In the next step S206, a correction position control signal for appropriate image blur correction is calculated using the gain calculated in step S205. In subsequent step S207, the correction lens 103 is driven by the correction position control signal calculated in step S206 to perform an image blur correction operation.

  If it is determined in step S204 that at least one of the angular velocity information and the correction position is greater than a predetermined value, it is determined that the panning operation is being performed, and the process immediately proceeds to step S206 without changing the gain. Therefore, in this case, the corrected position control signal is calculated using the gain immediately before set in step S205 and stored in the gain setting unit 308. In subsequent step S207, the correction lens 103 is driven by the correction position control signal calculated in step S206 to perform an image blur correction operation.

  As described above, when the image blur correction mode is OFF in step S202, the process proceeds to step S203, and the correction lens 103 is fixed at the center without setting the correction position control signal. That is, no image blur correction operation is performed. Then, the process proceeds to step S208.

  In the next step S208, it is determined whether or not the second switch of the release button has been pressed. If not, the process immediately proceeds to step S211. If it has been pressed, the process proceeds to step S209 to start exposure. In the next step S210, the exposure is terminated after exposure for a predetermined time. Then, in the next step S211, it is determined whether or not the power is ON. If it remains ON, the process returns to step 202, and thereafter the same operation is repeated. On the other hand, if the power is turned off, the series of operations is terminated.

  According to the first embodiment, when the determination result that the panning operation is being performed is obtained in the image blur correction mode, the gain changing operation is stopped (steps S204 → S206). Accordingly, during the panning operation and immediately after the end of the panning operation, the correction position control signal is calculated based on an appropriate gain (the previous gain information), so that it is possible to always perform an optimal image blur correction operation.

  Further, when the image blur correction operation is stopped, that is, when the image blur correction mode is OFF, the gain is not changed (steps S202 → S203 → S208). Therefore, as in the prior art, the gain information immediately after the transition from the stop state of the image blur correction operation to the driving state (image blur correction mode is ON) is not appropriately set, and a sufficient image blur correction effect cannot be obtained. Can be prevented.

  That is, it is possible to provide an imaging apparatus that can always provide an appropriate image blur correction effect regardless of the use state of the imaging apparatus.

  Next, an outline of a series of operations including an image blur correction operation of the imaging apparatus having the image blur correction function according to the second embodiment of the present invention will be described with reference to a flowchart of FIG. The other configurations and operations of the imaging apparatus are the same as those shown in FIGS.

  When it is confirmed in step S301 that the camera is turned on, a series of operations including an image blur correction operation in step S302 and subsequent steps are started. Here, the image blur correction operation is performed by an interrupt process that occurs at regular intervals (for example, 250 μsec). Then, control of the first direction, for example, the pitch direction (vertical direction) and the second direction, for example, the yaw direction (lateral direction) is performed.

  In step S302, the state of the image blur correction mode is determined. If the image blur correction mode is ON, the process proceeds to step S304. If the image blur correction mode is OFF, the process proceeds to step S303.

  If the image blur correction mode is ON and the process proceeds to step S304, it is determined whether the still image mode or the moving image mode. If it is determined that the still image mode is selected, the process proceeds to step S305. If it is determined that the moving image mode is selected, the process proceeds to step S308.

  When the process proceeds to step S305 assuming that the still image mode is set, it is determined whether or not the panning operation is being performed. Specifically, it is determined whether or not the angular velocity information is equal to or less than a predetermined value for determining the still image angular velocity information and whether or not the correction position is equal to or less than a predetermined value for determining the still image correction position. As a result, when both the angular velocity information and the correction position are equal to or less than the predetermined value, it is determined that the panning operation is not being performed, and the process proceeds to step S306. Then, as described in the flowchart of FIG. 4, the gain correction coefficient is calculated based on the angular velocity information and the motion vector information, and the gain information is set based on the gain correction coefficient. In the next step S307, an appropriate correction position control signal (image blur correction amount) is calculated using the gain information calculated in step S306. In subsequent step S309, the correction lens 103 is driven by the correction position control signal calculated in step S306 to perform an image blur correction operation.

  If it is determined in step S305 that at least one of the angular velocity information and the correction position is larger than the predetermined value, it is determined that the panning operation is being performed, and the process immediately proceeds to step S307 without changing the gain. Accordingly, in this case, the correction position control signal is calculated using the immediately preceding gain, and in subsequent step S309, the correction lens 103 is driven by the correction position control signal to perform an image blur correction operation.

  If it is determined in step S304 that the moving image mode is selected, the process proceeds to step S308 to determine whether the angular velocity data is equal to or less than a predetermined value for determining the moving image angular velocity information and the correction position is for moving image correction position determination. It is determined whether or not the value is equal to or less than a predetermined value. If both the angular velocity data and the correction position signal are equal to or smaller than the predetermined value, it is determined that the panning operation is not being performed, the processes in steps S306 and S307 are performed, and the process proceeds to step S309. If at least one of the angular velocity information and the correction position is larger than the predetermined value, it is determined that the panning operation is being performed, and the process immediately proceeds to step S307 without changing the gain. Therefore, in this case, as in the still image mode, the correction position control signal is calculated using the immediately preceding gain, and in step S309, the correction lens 103 is driven by the correction position control signal, and the image blur correction operation is performed. I do.

  As described above, when the image blur correction mode is OFF in step S302, the process proceeds to step S303, and the correction lens 103 is fixed at the center without setting the correction position control signal. That is, no image blur correction operation is performed. Then, the process proceeds to step S310.

  In the next step S310, it is determined whether or not the second switch of the release button has been pressed. If not, the process immediately proceeds to step S313, but if it has been pressed, the process proceeds to step S311 to start exposure. Then, in the next step S312, the exposure is terminated after exposure for a predetermined time. Then, in the next step S313, it is determined whether or not the power is ON. If the power remains ON, the process returns to step 302, and thereafter the same operation is repeated. On the other hand, if the power is turned off, the series of operations is terminated.

  According to the second embodiment, when it is determined that the panning operation is being performed in the image blur correction mode, the gain changing operation is stopped (step S305 or S308 → S307). Therefore, since the correction position control signal is calculated based on an appropriate gain (immediate gain information) during the panning operation and immediately after the end of the panning operation, it is possible to always perform an optimal image blur correction operation.

  Further, when the image blur correction operation is stopped, that is, when the image blur correction mode is OFF, the gain information is not changed (steps S302 → S303 → S310). Therefore, unlike the prior art, the gain immediately after the transition from the stop state of the image blur correction operation to the driving state (image blur correction mode is ON) is not set appropriately, and a sufficient image blur correction effect cannot be obtained. Can be prevented.

  That is, it is possible to provide an imaging apparatus that can always provide an appropriate image blur correction effect regardless of the use state of the imaging apparatus.

(Correspondence between the present invention and the embodiment)
The sensor units 201 and 202 correspond to a first shake detection unit that detects a shake applied to the imaging apparatus of the present invention by a shake detection sensor. The motion vector calculation unit 211 corresponds to a second shake detection unit that detects a shake from a motion vector calculated from an image signal from the imaging unit of the present invention. The switch 310 corresponds to switching means for switching whether or not to change the gain by the gain correction coefficient according to the determination result of the panning operation of the present invention. Further, the switching means is not switched to a state in which the gain is changed by the gain setting means when an operation mode in which the correction means is not operated is set.

  The imaging unit 109 corresponds to the imaging unit, and the image stabilization control units 203 and 204 correspond to the calculation unit. The gain correction coefficient calculation unit 303 corresponds to the gain correction coefficient calculation unit of the present invention, the gain setting unit 308 corresponds to the gain setting unit, and the panning determination unit 309 corresponds to the panning operation determination unit. The correction lens 103 corresponds to the correction unit of the present invention.

(Modification)
In the above description, the correction lens 103 is used as the correction means. However, the present invention is also applicable to a variable apex angle prism or an image pickup unit (image pickup element) 109 that performs shake correction by moving on a plane perpendicular to the optical axis. it can. For example, in the case of the imaging unit 109 that performs shake correction by moving on a plane perpendicular to the optical axis, the configuration shown in FIG. 7 can be used.

  Here, the correction means shown in FIG. 7 will be described. Reference numeral 109 denotes an imaging unit, reference numerals 901 and 902 denote drive coils, and reference numerals 903 and 904 denote Hall elements that detect the position of the movable part. Here, the movable part is a part including the imaging unit 109. Reference numerals 905, 906, 907, and 908 denote magnets. Reference numeral 909 denotes a first holding portion, 910 denotes a first guide portion provided on the first holding portion 909, 911 denotes a second holding portion, and 912 denotes a second holding portion 911. A second guide part 913 indicates a third holding part fixed to the casing. Reference numeral 914 denotes a first elastic body provided between the first holding part 909 and a fixing part (not shown), and 915 is provided between the second holding part 911 and a fixing part (not shown). A 2nd elastic body is shown. The directions guided by the first guide part 910 and the second guide part 912 are orthogonal to each other. In addition, the first holding unit 909 provided with the imaging unit 109 is elastically supported by the first elastic body 914 and the second elastic body 915.

  With this configuration, the imaging unit 109 can be moved in a plane orthogonal to the optical axis, which is substantially equivalent to a configuration in which the correction lens 103 included in the imaging optical system is moved.

1 is a block diagram illustrating an overall configuration of an imaging apparatus according to Embodiment 1 of the present invention. FIG. 3 is a block diagram illustrating a partial configuration of a correction lens drive control unit and a control unit 117 according to the first embodiment of the present invention. It is a block diagram which shows the structure of the image stabilization control part concerning Example 1 of this invention. 4 is a flowchart showing operations relating to gain correction coefficient calculation and gain information change (setting) performed by a gain correction coefficient calculation unit and a gain setting unit in FIG. 3. 3 is a flowchart showing a series of schematic operations including an image blur correction operation according to the first embodiment of the present invention. 6 is a flowchart showing a series of schematic operations including an image blur correction operation according to Embodiment 2 of the present invention. It is a perspective view which shows the other structural example of the correction | amendment means concerning each Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 103 Correction lens 104 Correction lens drive control part 109 Imaging part 117 Control part 201,202 Sensor part 203,204 Anti-vibration control part 205,206 PID part 207,208 Drive part 209,210 Position detection part 211 Motion vector calculation part 303 Gain Correction coefficient calculation unit 308 Gain setting unit 309 Panning determination unit 310 Switch

Claims (6)

First shake detection means for detecting shake applied to the imaging device by a shake detection sensor;
Second shake detection means for detecting shake from a motion vector calculated from an image signal from the imaging means;
Calculating means for calculating a correction position control signal for image shake correction based on shake information detected by the first shake detection means;
Gain correction coefficient calculating means for calculating a gain correction coefficient of a gain for adjusting the correction position control signal based on the respective shake information detected by the first shake detecting means and the second shake detecting means; ,
Gain setting means for changing the gain based on the gain correction coefficient;
An image pickup apparatus having correction means that is driven by the correction position control signal adjusted by the gain and performs image blur correction,
Panning operation determination means for determining whether or not a panning operation is being performed;
An image pickup apparatus comprising: switching means for switching whether to change the gain by the gain correction coefficient according to a determination result of the panning operation.   The imaging apparatus according to claim 1, wherein the switching unit switches to a state in which the gain setting unit does not change the gain when the panning operation is determined.   2. The switching device according to claim 1, wherein when the operation mode in which the correcting device is not operated is set, the switching device does not switch to a state in which the gain is changed by the gain setting device. 2. The imaging device according to 2.   The imaging apparatus according to claim 1, wherein the determination as to whether or not the panning operation is performed is based on information detected by the first shake detection unit. Detecting a shake applied to the imaging apparatus by the first shake detection means using a shake detection sensor;
Detecting a shake from a motion vector calculated by an image signal from an imaging means by a second shake detection means;
Calculating a correction position control signal for image shake correction based on shake information detected by the first shake detection means;
Calculating a gain correction coefficient of a gain for adjusting the correction position control signal based on each shake information detected by the first shake detection means and the second shake detection means;
Changing the gain based on the gain correction coefficient;
Determining whether a panning operation is being performed;
Switching whether to change the gain by the gain correction coefficient according to the determination result of the panning operation;
And a step of driving a correction means by the correction position control signal adjusted by the gain to perform image blur correction.   A recording medium in which the control program according to claim 5 is recorded.

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