JP2007288726A - Imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera capable of easily obtaining a panning effect.
[Solution]
The camera 1 is a camera for panning a moving object. The camera 1 detects the movement of the imaging device 14, the angle-of-view correction unit 12 that changes the incident direction of light with respect to the imaging surface of the imaging device 14, and the camera 1. Based on the acceleration sensor 18, the movement of the camera 1 detected by the acceleration sensor 18, and the moving speed of the moving object image in the frame, the position of the moving object image formed on the imaging surface is constant. The control unit 20 that controls the angle-of-view correction unit 12 is provided.
[Selection] Figure 1

Description

  The present invention relates to an imaging apparatus such as a digital camera. The present invention particularly relates to an imaging apparatus having a function of assisting panning shooting.

  One of the photography techniques is panning. Panning is a shooting technique in which, when shooting a moving subject (moving object), the imaging range is followed in accordance with the movement of the subject. When performing panning, the shutter speed is appropriately selected and exposure is performed while following the subject. An image captured by panning is an image in which the moving subject is less blurred and the background flows due to the blur.

  The point of panning is that a slow shutter speed is selected and the photographer shakes the camera according to the movement of the main subject. Reduce blur for the main subject as much as possible, and increase for other subjects (background). As a result, a photograph can be obtained in which the main subject appears stationary while the background is greatly blurred.

  Panning requires the camera to accurately follow the movement of the subject. If tracking is incomplete, the subject will be blurred and the direction of the background flow will be disturbed. Panning is an advanced photography technique, and it was difficult for non-experts to perform panning.

  Patent Document 1 describes an invention of a camera for performing panning. In the invention described in Patent Document 1, when performing panning, the camera is fixed in the direction in which the main subject passes. The camera changes the apex angle of the variable apex angle prism at a speed corresponding to the signal output of the moving body speed sensor. As a result, the main subject can be taken without shaking without shaking the camera.

  FIG. 11 is a diagram illustrating the configuration of the camera described in Patent Document 1. In FIG. The camera includes a variable apex angle prism 101, a prism drive actuator 102 for changing the apex angle of the variable apex angle prism 101, a moving body speed sensor 103 that detects the moving speed of the main subject, and a measurement that measures the distance to the subject. The distance (AF) sensor 104, the photometric (AE) sensor 105 that measures the exposure level of the subject, the photographing lens 106, the photographing lens driving actuator 107 for performing the focusing operation of the photographing lens 106, and the operation of the camera. A microcomputer 108 for controlling, a diaphragm mechanism 109 for limiting incident light, a release switch 110 for causing the camera to perform a photographing operation, a shutter 111, a recording medium 112 such as a film, and a photographing mode selector 113; It has.

The photographing lens 106 guides light rays from the subject to the photographing surface. At this time, when the subject moves, the light from the subject moves on the photographing surface, so that the image of the subject blurs. In the invention described in Patent Document 1, the variable apex angle prism 101 is disposed between the object and the photographing lens 106. During the exposure time, the camera changes the apex angle of the variable apex angle prism 101 according to the incident angle of light from the subject with respect to the lens optical axis. The variable apex angle prism 101 controls the refraction angle of the light from the object, and keeps the reflected light from the moving body that reaches the imaging surface in a constant state without blur. As a result, the subject image is not blurred and the background is blurred, so that the same effect as the panning can be obtained.
Japanese Patent Laid-Open No. 7-98471 (page 4, FIG. 1)

  However, in the conventional method, it is necessary to use fixing means such as a tripod for fixing the camera. Further, in the conventional method, the movement trajectory of the main subject needs to be known in advance. In addition, it was necessary to prepare in advance to fix the camera on a tripod, so it was not possible to shoot easily.

  Camera shake correction is known as a process for correcting blur, but normal camera shake correction detects only the movement on the camera side and does not detect the movement of the subject. Therefore, although correction corresponding to the movement of the camera can be performed, blur caused by the movement of the subject cannot be corrected. When the camera shake correction technology is applied to panning shot shooting, when a moving subject is chased by a camera, a blur caused by the movement of the camera is erroneously detected. Therefore, there is a possibility that an image in which the subject is blurred and the background is stationary can be taken.

  In moving image shooting and the like, a correction process called tracking for tracking an object so as not to protrude from the screen is known. In tracking, an image corresponding to a main subject is detected from captured images by pattern matching or the like, and the movement of the subject is corrected. However, panning shooting is a shooting technique that follows a subject with the shutter open. Since the image cannot be captured during the exposure period when the shutter is open, the movement of the subject cannot be detected from the image. Therefore, the tracking technique cannot be applied to panning shots.

  In view of the above-described background, an object of the present invention is to provide an imaging apparatus that can easily obtain a panning effect.

  An imaging apparatus according to the present invention is an imaging apparatus for panning a moving object, and includes an imaging element, an incident direction changing unit that changes an incident direction of light with respect to an imaging surface of the imaging element, and movement of the imaging apparatus An image of the moving object imaged on the imaging surface based on an acceleration sensor for detecting the movement, a movement of the imaging device detected by the acceleration sensor, and a moving speed of the moving object image in a frame. And a control unit that controls the incident direction changing unit so that the position is constant.

  With this configuration, the moving direction and moving speed of the moving object image within the frame can be obtained based on the movement of the imaging device detected by the acceleration sensor and the moving speed of the moving object image within the frame. Based on the moving direction and moving speed of the moving object image, control is performed so that the position of the moving object image at the time of exposure is constant. As a result, even when the photographer cannot completely follow the moving object when performing panning, the moving object image is formed at a fixed position on the imaging surface by correction by the incident direction changing unit. Blurring can be reduced.

  In the imaging apparatus according to the aspect of the invention, the control unit obtains a field-of-view changing speed of the imaging apparatus based on the movement of the imaging apparatus detected by the acceleration sensor, and changes the field-of-view changing speed and the frame of the moving object image. The moving speed of the moving object image when the field of view of the imaging apparatus has not been changed is obtained as a predicted moving speed based on the moving speed in the camera, and the imaging apparatus is based on the moving speed of the imaging apparatus during exposure. The field of view change speed is obtained, and based on the field of view change speed and the predicted moving speed of the moving object image, the moving speed of the moving object image in the frame is obtained. The incident direction changing unit is controlled so that the position of the image of the moving object imaged on the imaging surface is constant based on the moving speed.

  With this configuration, the moving speed of the moving object when the field of view of the imaging device is not changed is obtained based on the moving speed of the moving object image within the frame and the speed of change of the field of view of the imaging device obtained from the acceleration sensor. . Even during exposure, the view angle changing unit is controlled by predicting the movement at the moving speed. That is, at the time of exposure, the change rate of the field of view of the imaging device is obtained by an acceleration sensor, and the movement after a predetermined time is determined based on the change rate of the field of view based on the movement of the imaging device and the predicted movement speed of the image of the moving object The moving direction and speed in the frame of the object image can be predicted. Thereby, it is possible to control the position of the moving object image to be constant based on the moving direction and moving speed in the frame of the moving object image at the time of exposure, and to reduce the blur of the moving object image.

  In the imaging apparatus of the present invention, the incident direction changing unit includes an optical path changing unit that changes an optical path of light incident on the imaging element.

  With this configuration, the position of the moving object image formed on the imaging surface can be made constant by changing the optical path.

  In the imaging apparatus according to the aspect of the invention, the incident direction changing unit includes a drive device that changes the position of the imaging element.

  With this configuration, the position of the moving object image formed on the imaging surface can be made constant by moving the imaging element.

  According to the present invention, based on the movement of the imaging device detected by the acceleration sensor and the moving speed of the moving object image in the frame, the moving object is moved based on the moving direction and moving speed of the moving object image during exposure. By controlling the position of the image to be constant, blurring of the moving object image can be reduced even when the photographer cannot follow the moving object completely during panning.

Hereinafter, a camera according to an embodiment of the present invention will be described with reference to the drawings.
(Camera configuration)
FIG. 1 is a schematic block diagram of a camera 1 according to an embodiment of the present invention. The camera 1 includes a lens 10, an image sensor 14 that captures an image by receiving light incident from the lens 10, and an image output unit 16 that outputs an image captured by the image sensor 14.

  The camera 1 has an optical system that guides light incident from the lens 10 to the image sensor 14. In this optical system, an angle-of-view correction unit 12 is arranged. The angle-of-view correction unit 12 is configured to refract the light incident from the lens 10 and change the incident direction with respect to the imaging surface.

  FIG. 2A is a diagram illustrating an example of the field angle correction unit 12. The camera 1 shown in FIG. 2A includes a variable apex angle prism 40 that corrects the angle of view. As shown in FIGS. 2B and 2C, the camera 1 can change the incident direction of light with respect to the imaging surface of the imaging element 14 by changing the apex angle of the variable apex angle prism 40. it can.

  The camera 1 includes a control unit 20 that controls a correction amount by the angle of view correction unit 12. The control unit 20 adjusts the correction amount of the angle of view so that the moving object forms an image at a predetermined position on the imaging surface of the image sensor 14 when the moving object is panned. The control unit 20 receives a signal indicating the amount of movement of the camera 1 from the acceleration sensor 18 that detects the movement of the camera 1. The control unit 20 detects the field of view change speed of the camera 1 based on this signal, and determines the field angle correction amount based on the field of view change speed. Hereinafter, the configuration of the control unit 20 will be described.

  The control unit 20 includes an inter-frame difference detection unit 22, a camera motion detection unit 24, and a motion correction amount calculation unit 26. The inter-frame difference detection unit 22 obtains change amount data of the moving object image by detecting the inter-frame difference of the image captured by the image sensor 14. Thereby, the speed at which the image of the moving object moves within the frame can be obtained.

  The camera motion detection unit 24 has a function of detecting the motion of the camera 1 based on the signal input from the acceleration sensor 18. The camera motion detection unit 24 detects the motion of the camera 1 in a plane perpendicular to the imaging direction.

  Based on the moving speed of the moving object detected by the inter-frame difference detecting unit 22 in the frame and the movement of the camera 1 detected by the camera motion detecting unit 24, the motion correction amount calculating unit 26 performs exposure. Has a function of calculating the correction amount of the angle of view. The motion correction control unit 28 controls the angle of view correction unit 12 using the correction amount calculated by the motion correction amount calculation unit 26. Here, the principle of field angle correction in the present embodiment will be described.

(Principle of angle of view correction)
FIG. 3 is a diagram illustrating an example of the camera 1 that follows the movement of the moving object and the moving object. As shown in FIG. 3, the moving object moves to position a at time t1, position b at time t2, position c at time t3, and position d at time t4.

  The photographer pans a moving object in which the moving object moves from position a to position d. Before opening the shutter, the photographer captures a moving object moving from position a to position b in the finder, and follows the moving object with the finder while capturing the object in the finder. The photographer opens the shutter of the camera 1 when the moving object is at the position c at time t3, and performs exposure until it moves to the position d at time t4.

  FIG. 4 is a diagram illustrating images captured by the camera 1 from time t1 to time t4. In FIG. 4, the image at time t1 is frame A, the image at time t2 is frame B, the image at time t3 is frame C, and the image at time t4 is frame D. For the sake of explanation, the image shown in FIG. 4 shows an image that would be picked up at each time from time t1 to time t4. Actually, the camera 1 is shown in FIG. The image shown is not taken.

  An outline of processing for calculating the correction amount of the angle of view correction will be described. Before exposure (from time t1 to time t3), the motion correction amount calculation unit 26 obtains the moving speed V of the moving object when the field of view of the camera is fixed. The motion correction amount calculation unit 26 predicts the displacement of the moving object within the frame on the assumption that the moving object moves at the moving speed V even during exposure (from time t3 to time t4), and the moving object is connected. The correction amount is calculated so that the imaged position is constant.

(Pre-exposure processing)
The image at time t1 is compared with the image at time t2. As the camera 1 moves from time t1 to time t2, the field of view of the camera 1 moves by the frame movement amount P1. The frame movement amount P1 can be obtained based on a signal input from the acceleration sensor 18.

The motion correction amount calculation unit 26 determines the frame movement amount P1 as follows. As shown in FIG. 5, the minute displacement angle Δθ of the camera 1 that moves while capturing the subject can be approximated by the minute displacement Δx of the camera 1 in a plane perpendicular to the imaging direction.
Δθ≈Δx (= tan Δθ) (1)
Therefore, the motion correction amount calculation unit 26 obtains the minute displacement Δx of the camera 1 in a plane perpendicular to the imaging direction by the acceleration sensor 18 and obtains the minute angular displacement Δθ. The viewing angle A of the camera 1 is predetermined. The motion correction amount calculation unit 26 obtains the frame movement amount P1 by the following equation (2) using the horizontal width W of the frame.
P1 = W × (Δθ / A) ≈W × (Δx / A) (2)

  The inter-frame difference detection unit 22 detects an image of a moving object from the frames A and B using pattern matching or the like. The inter-frame difference detection unit 22 obtains a movement amount P2 within the frame of the detected moving object image. If the moving object is appropriately followed at time t1 and time t2, the moving amount P2 within the frame is zero.

Next, the motion correction amount calculation unit 26 calculates the movement amount P3 of the subject when the field of view is fixed based on the frame movement amount P1 and the movement amount P2 of the subject in the frame by the following equation (3). Ask for. Further, as shown in the following equation (4), the motion correction amount calculation unit 26 divides the movement amount P3 by the elapsed time from the time t1 to the time t2 to obtain the movement speed V. The moving speed V is not an actual moving object speed but a moving speed based on the frame.
P3 = P1 + P2 (3)
V = P3 / (t2-t1) (4)
In the present embodiment, the correction amount is calculated on the assumption that the moving object is moving at the speed V even during exposure.

(Processing during exposure)
The motion correction amount calculation unit 26 obtains a frame movement amount P4 that is a movement amount of the visual field of the camera 1. The motion correction amount calculation unit 26 detects the minute displacement Δx of the camera 1 being exposed by the acceleration sensor 18, and obtains the frame movement amount P4 by the above equation (2).

  Next, the motion correction amount calculation unit 26 obtains the moving amount P5 of the moving object in the minute time Δt using the moving object speed V when the field of view is fixed. Using the frame movement amount P4 and the movement amount P5, the movement amount of the moving object in the frame is predicted. By subtracting the frame movement amount P4 from the movement amount P5 of the moving object, the predicted movement amount of the moving object in the frame can be obtained. This predicted movement amount is the blur amount of the moving object image. The motion correction amount calculation unit 26 calculates a blur correction amount P6 for forming an image of the moving object at a certain position on the imaging surface based on the predicted blur amount of the moving object image.

  FIG. 6 is a diagram illustrating the relationship between the frame movement amount and the movement amount of the moving object. The vertical axis in FIG. 6 indicates time t, and the horizontal axis indicates position p. The inclination of the locus shown in FIG. 6 represents the moving speed of the frame and the moving speed of the moving object. As can be seen from FIG. 6, the steeper the slope of the locus, the slower the speed, and the gentler the speed, the faster the speed. Between time t1 and time t2, the field of view of the camera 1 is displaced by the frame movement amount P1, and the moving object is moved by the movement amount P3. The difference in the inclination of the field of view of the camera 1 and the moving trajectory of the moving object indicates that the respective speeds are different. As described above, when the changing speed of the field of view of the camera 1 and the moving speed of the moving object are different, the image of the moving object in the frame is displaced. In order to eliminate the displacement of the image of the moving object in the frame, a correction amount indicated by the hatched portion shown in FIG. 6 is added. Thereby, since the displacement of the image of the moving object in the frame is eliminated, the moving object can be captured without blurring, and appropriate panning can be performed.

  FIG. 7 is a diagram illustrating the relationship between the frame moving amount and the moving amount of the moving object when the moving speed of the camera 1 changes during exposure. When the moving speed of the camera 1 changes, the changing speed of the visual field of the camera 1 changes, so that the frame moving speed (tilt) changes midway as shown in FIG. In this case, as shown by the hatched portion in FIG. 7, the displacement of the moving object image in the frame is eliminated by changing the correction amount in the middle.

(Camera operation)
Next, the operation of the camera 1 according to the embodiment will be described. When light from the subject enters the lens 10 of the camera 1, the light enters the imaging element 14 through the field angle correction unit 12. The image sensor 14 converts the incident light into an image signal and inputs the image signal to the image output unit 16. The image output unit 16 outputs an image based on the input image signal.

  The image sensor 14 inputs an image signal to the inter-frame difference detection unit 22 of the control unit 20. In addition, the camera 1 detects the movement of the camera 1 by the acceleration sensor 18 and inputs a signal indicating the movement of the camera 1 to the camera motion detection unit 24 of the control unit 20. Based on the image signal input from the image sensor 14 and the signal indicating the movement of the camera 1 input from the acceleration sensor 18, a process for controlling the correction amount of the angle of view correction unit 12 is performed.

  FIG. 8 is a diagram illustrating a motion correction operation of the camera 1 according to the present embodiment. With reference to FIG. 8, the motion correction of the camera 1 of this Embodiment is demonstrated.

  The camera 1 determines the amount of movement of the moving object within the frame at two predetermined times (for example, times t1 and t2) before exposure (S10). The inter-frame difference detection unit 22 detects the moving object image from the image captured by the image sensor 14 and calculates the moving amount P3 of the moving object image.

  Next, the camera 1 obtains the amount of frame movement at two predetermined times (S12). Here, the two predetermined times are the same as the two predetermined times when the movement amount P3 is obtained. The camera motion detection unit 24 obtains the displacement Δx of the camera 1 based on the signal input from the acceleration sensor 18. The motion correction amount calculation unit 26 calculates the amount of movement of the frame using the displacement Δx of the camera 1. Note that the order of the process for obtaining the amount of movement of the image within the frame (S10) and the process for obtaining the amount of movement of the frame (S12) may be interchanged.

  Subsequently, the camera 1 calculates the velocity V of the moving object when the field of view is fixed (S14). The motion correction calculation unit calculates the velocity V of the moving object when the field of view of the camera 1 is fixed based on the moving amount P1 of the frame and the moving amount P2 of the moving object within the frame.

  The camera 1 determines whether exposure has started (S16). When the exposure is started (YES in S16), the camera 1 performs a field angle correction process. When the exposure is not started (NO in S16), the camera 1 determines the amount of movement of the moving object in the frame. Returning to the calculation process (S10), the process of calculating the speed of the moving object is performed. As described above, the speed V of the moving object during the exposure can be accurately predicted by repeatedly performing the process of obtaining the speed V of the moving object until immediately before the start of exposure.

  Next, processing during exposure will be described. When exposure of the camera 1 is started (YES in S16), the camera 1 detects the movement of the camera 1 by the acceleration sensor 18 (S18). The acceleration sensor 18 inputs a signal indicating the movement of the camera 1 to the camera motion detection unit 24. The camera motion detection unit 24 calculates the displacement Δx of the camera 1 in a plane perpendicular to the imaging direction and inputs the displacement Δx to the motion correction amount calculation unit 26.

  Based on the displacement Δx of the camera 1 and the velocity V of the moving object, the motion correction amount calculation unit 26 predicts the moving amount of the moving object within the frame in the minute time Δt (S20). The motion correction amount calculation unit 26 obtains the moving speed of the frame from the displacement Δx of the camera 1 and subtracts the moving speed of the frame from the moving speed V of the moving object, thereby obtaining the speed of the moving object in the frame. Then, the moving speed within the frame is multiplied by the minute time Δt to determine the moving amount of the moving object image within the frame, that is, the blurring amount of the image. When the moving speed of the frame is equal to the moving object, the moving object is captured at a fixed position of the image sensor 14, and the moving amount of the moving object in the frame is zero.

  The motion correction amount calculation unit 26 calculates the correction amount of the angle of view based on the movement amount of the image of the moving object in the frame (S22). The motion correction amount calculation unit 26 calculates a field angle correction amount by calculating backward from the moving speed of the moving object in the frame so that the position of the moving object image formed on the imaging surface is constant. The correction operation control unit 28 controls the angle of view correction unit 12 using the correction amount calculated by the motion correction amount calculation unit 26 (S24).

The camera 1 determines whether or not the exposure has ended (S26). If the exposure is not completed (NO in S26), the camera 1 returns to the process of detecting the acceleration of the camera 1 (S18), repeats the process of correcting the angle of view, and the exposure is completed. (YES in S26) ends the panning process.
The configuration and operation of the camera 1 according to the embodiment have been described above.

  In the camera 1 of the present embodiment, the field of view of the camera 1 is fixed based on the movement of the camera 1 detected by the acceleration sensor 18 and the speed of the image of the moving object in the frame before exposure. The velocity V of the moving object is obtained. The camera 1 predicts the moving amount of the image of the moving object in the frame based on the moving speed V of the moving object obtained before the exposure and the movement of the camera 1 during the exposure, and based on the predicted moving amount, The angle of view correction unit 12 is controlled so that the position of the image of the moving object is constant. As a result, even when the photographer cannot follow the moving object completely when performing panning, the moving object forms an image at a certain position on the imaging surface, and blurring of the moving object image can be reduced. .

  In the above embodiment, the case where the camera 1 is shifted in the same direction as the moving direction of the moving object has been described as an example. However, in the camera 1 of the present embodiment, the camera 1 intersects the moving direction of the moving object. Even when it is displaced in the direction, it can be corrected.

FIG. 9 is a diagram illustrating correction when the camera 1 is shifted in a direction intersecting the moving direction of the moving object.
Similar to the correction at time t4 in FIG. 4, a horizontal blur correction amount P6 is obtained from the horizontal movement amount P4 of the frame and the predicted movement amount P5 of the moving object. In the example shown in FIG. 9, the camera 1 moves in the same direction as the moving direction of the moving object and also moves in a direction intersecting the moving direction. As shown in FIG. 9, the field of view of the camera 1 also changes in the vertical direction due to the movement of the camera, and the image of the moving object is blurred.

  In the present embodiment, since the motion correction amount calculation unit 26 obtains a correction amount based on the displacement of the camera 1 during exposure, the acceleration sensor 18 detects the vertical blur of the camera 1 and outputs the detection result. Based on this, the vertical blur is corrected. As shown in FIG. 9, the camera 1 determines the correction amount of the angle of view based on the blur correction amount P7. Therefore, even when the camera 1 is displaced in a direction different from the moving direction of the moving object, the moving object forms an image at a certain position on the imaging surface, and blurring of the image of the moving object can be reduced. Therefore, even when the camera 1 moves up and down, it is possible to appropriately perform the panning.

  Although the imaging device of the present invention has been described with reference to the embodiment, the present invention is not limited to the above-described embodiment.

  In the above-described embodiment, the field angle correction unit 12 disposed between the lens 10 and the image sensor 14 performs correction so that the image of the moving object is formed at a certain position on the imaging surface. The configuration for changing the incident direction of light on the imaging surface is not limited to the view angle correction unit 12.

  FIG. 10 is a diagram illustrating a configuration of the camera 2 provided with the driving device 30 that changes the position of the imaging element 14 in order to change the incident direction of light from the subject on the imaging surface. As shown in FIG. 10, the same effect as that of the above-described embodiment can be obtained also by the configuration in which the control unit 20 controls the driving device 30 that changes the position of the image sensor 14.

  As described above, the present invention has an excellent effect of reducing blurring of an image of a moving object even when the photographer cannot completely follow the moving object when performing panning. It is useful as an imaging device having a function for assisting panning shooting.

The figure which shows the structure of the camera of embodiment. (A) The figure which shows the vertex angle variable prism which comprises a view angle correction | amendment part (b) The figure which shows the state which changed the vertex angle of the vertex angle variable prism (c) The state which changed the vertex angle of the vertex angle variable prism Figure Diagram showing an example of a moving object and a camera that follows the moving object The figure which shows the image from the time t1 to the time t4 Diagram showing the relationship between camera movement and imaging direction displacement Diagram showing the relationship between the amount of frame movement and the amount of movement of a moving object The figure which shows the relationship between the amount of movement of the frame and the amount of movement of the moving object when the moving speed of the camera changes during exposure The figure which shows the motion correction operation | movement of the camera of this Embodiment The figure explaining correction | amendment when a camera slip | deviates to the direction which cross | intersects the moving direction of a moving object. The figure which shows other embodiment of this invention Diagram showing the configuration of a conventional camera

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 Camera 10 Lens 12 Angle-of-view correction | amendment part 14 Image pick-up element 16 Image output part 18 Acceleration sensor 20 Control part 22 Inter-frame difference detection part 24 Camera motion detection part 26 Motion correction amount calculation part 28 Correction operation control part 40 Variable vertex angle Prism 102 Prism drive actuator 103 Moving body speed sensor 104 Distance measurement (AF) sensor 105 Photometry (AE) sensor 106 Shooting lens 107 Lens drive actuator 108 Microcomputer 109 Aperture mechanism 110 Release switch 111 Shutter 112 Recording medium 113 Shooting mode selector

Claims (4)

An imaging device for panning a moving object,
An image sensor;
An incident direction changing unit that changes an incident direction of light with respect to an imaging surface of the imaging element;
An acceleration sensor for detecting movement of the imaging device;
Based on the movement of the imaging device detected by the acceleration sensor and the moving speed of the moving object image in a frame, the position of the image of the moving object formed on the imaging surface is constant. A control unit for controlling the incident direction changing unit;
An imaging apparatus comprising: The controller is
Based on the movement of the imaging device detected by the acceleration sensor, a change speed of the field of view of the imaging device is obtained, and based on the change speed of the field of view and the movement speed of the moving object image in the frame, the imaging device The movement speed of the moving object image when there is no change in the field of view is obtained as the predicted movement speed,
At the time of exposure, a change speed of the field of view of the imaging device is obtained based on the moving speed of the imaging device, and based on the change speed of the field of view and the predicted moving speed of the moving object image, Obtaining the moving speed, and controlling the incident direction changing unit so that the position of the image of the moving object imaged on the imaging surface is constant based on the obtained moving speed in the frame of the moving object image;
The imaging apparatus according to claim 1.   The imaging apparatus according to claim 1, wherein the incident direction changing unit includes an optical path changing unit that changes an optical path of light incident on the imaging element. The imaging apparatus according to claim 1, wherein the incident direction changing unit includes a driving device that changes a position of the imaging element.