JP2014068081A - Imaging apparatus and control method of the same, program and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve an art of easily performing panoramic photography including a photographer as a subject.SOLUTION: An imaging apparatus including photographing means and synthesizing means for synthesizing a plurality of images photographed by the photographing means comprises: subject detection means for detecting a subject from an image photographed by the photographing means; background extraction means for extracting a background region from the plurality of images on the basis of the detection result by the subject detection means; background image creation means for synthesizing the images from which the background regions are extracted so as to link the images to create a background image having wider field angle than that of each of the plurality of images; and panoramic image synthesizing means for selecting the image from which the subject is detected and synthesizing the selected image with the background image created by the background image creation means to create a panoramic image.

Description

  The present invention relates to a technique for generating a panoramic image.

  In recent years, a method for capturing a panoramic image using a monocular camera system has been proposed. The photographer shoots while changing (panning) the shooting direction. An image having one wide angle of view can be created by connecting a plurality of material images generated by this photographing. For example, Patent Document 1 discloses a method of generating a panoramic overall image in which a plurality of image areas are connected by capturing images while sequentially changing the shooting direction.

JP 2009-284522 A

  However, in the above-mentioned Patent Document 1, when the same subject is largely reflected over a plurality of material images, specifically, when panoramic shooting including the photographer himself as a subject is attempted, there is a case where the composition cannot be performed well. In order to shoot a panoramic image, as shown in FIG. 11, the shooter takes a picture while turning the imaging apparatus 1100 toward himself / herself and rotating around him / her. The material image photographed at this time is a large image of the photographer himself at the same position with respect to the frame as shown in FIG. When these material images are to be combined according to the above-mentioned Patent Document 1, the generated image is a series of photographers as shown in FIG. This is because in Patent Document 1 described above, the image region used for panorama synthesis is set at a fixed position (center) with respect to the frame.

  The present invention has been made in view of the above problems, and an object thereof is to realize a technique capable of easily performing panoramic photographing including a photographer himself as a subject.

  In order to solve the above-described problems and achieve the object, an imaging apparatus according to the present invention is an imaging apparatus that includes an imaging unit and a synthesis unit that combines a plurality of images captured by the imaging unit. Subject detection means for detecting a subject from an image photographed by the means, background extraction means for extracting a background area from the plurality of images based on a detection result of the subject detection means, and an image from which the background area has been extracted. A background image generation unit that generates a background image having a wider angle of view than the plurality of images by combining the images so as to be connected, and an image in which the subject is detected by the subject detection unit is selected from the plurality of images, and the generation is performed. Panoramic image synthesizing means for synthesizing the generated background image to generate a panoramic image.

  According to the present invention, it is possible to easily perform panoramic shooting including the photographer himself as a subject.

1 is a block diagram showing a configuration of an imaging apparatus according to an embodiment of the present invention. 5 is a flowchart illustrating panoramic image synthesis processing according to the first embodiment. The figure which illustrates UI screen for notifying a background area in panoramic photography mode. The figure which illustrates UI screen for encouraging one hand holding in panorama photography mode. The figure which illustrates the material image image | photographed in the panoramic photography mode. The figure explaining the panorama image synthetic | combination process of this embodiment. The figure which shows a mode that a person image is selected from a material image. FIG. 9 is a diagram for explaining panoramic image synthesis processing according to the second embodiment. 9 is a flowchart illustrating panoramic image synthesis processing according to the second embodiment. 10 is a flowchart illustrating panoramic image synthesis processing according to the third embodiment. The figure explaining the panoramic photography method. The figure which illustrates the image image | photographed in the conventional panoramic imaging mode. The figure which illustrates the panorama image produced | generated by the conventional panorama image synthetic | combination process.

  Hereinafter, embodiments for carrying out the present invention will be described in detail. The embodiment described below is an example for realizing the present invention, and should be appropriately modified or changed according to the configuration and various conditions of the apparatus to which the present invention is applied. It is not limited to the embodiment. Moreover, you may comprise combining suitably one part of each embodiment mentioned later.

  [Embodiment 1] An embodiment in which the present invention is applied to an imaging apparatus such as a digital camera will be described below.

  <Apparatus Configuration> With reference to FIG. 1, an outline of the configuration and functions of an imaging apparatus according to an embodiment of the present invention will be described.

  In FIG. 1, a photographing lens 101 includes a focus lens, a zoom lens, an IS (Image Stabilizer) lens, and the like, captures a subject, and forms an image on the imaging surface of the imaging element 104. The diaphragm 102 limits the amount of light of the subject image incident from the photographing lens 101 to a predetermined amount. The shutter 103 controls the exposure amount to the image sensor 104. The imaging element 104 converts the subject imaged by the photographing lens 101 into an electrical signal by a photoelectric conversion element that constitutes a CMOS image sensor or the like, and outputs it to the AGC circuit 106 via the preamplifier 105. The AGC circuit (auto gain control circuit) 106 adjusts the level of the image signal by adjusting the gain of the analog signal before being converted into a digital signal after the noise is removed by the preamplifier 105.

  The A / D converter 107 converts the analog signal output of the AGC circuit 106 into a digital signal.

  The video signal processing unit 108 performs predetermined filter processing, color conversion processing, and gamma processing on the digital image signal from the A / D conversion unit 107, creates development data, and performs compression processing such as JPEG, Output to the image memory 130. Further, the video signal processing unit 108 outputs the image data subjected to the predetermined processing to the exposure calculation unit 142, the focus detection unit 143, the background extraction unit 144, and the panoramic image synthesis unit 145.

  The exposure calculation unit 142 calculates an exposure value from the image data developed by the video signal processing unit 108 and outputs the exposure value to the system controller 110 via the signal processing unit 120.

  The focus detection unit 143 detects a focus state from the image data developed by the video signal processing unit 108 and outputs the detection result to the system controller 110 via the signal processing unit 120.

  The background extraction unit 144 extracts a background area other than the subject area from a material image obtained by panoramic photography, which will be described later, and outputs the extraction result to the system controller 110 via the signal processing unit 120.

  The panorama image composition unit 145 generates a panorama image by connecting and synthesizing a plurality of material images obtained by panorama shooting described later, and outputs the panorama image to the system controller 110 via the signal processing unit 120.

  The signal processing unit 120 converts the image data generated by the video signal processing unit 108 into an analog signal for display and outputs it to the display unit 150. The display unit 150 includes a liquid crystal display or an organic EL display.

  The azimuth information acquisition unit 121 acquires azimuth information such as the orientation and orientation of the imaging apparatus 100 and outputs the azimuth information to the system controller 110 via the signal processing unit 120.

  The position information acquisition unit 122 acquires the position information of the imaging apparatus 100 by receiving the GPS signal, and outputs the position information to the system controller 110 via the signal processing unit 120.

  The acceleration information acquisition unit 123 acquires acceleration information of the imaging device 100 by an acceleration sensor and outputs the acceleration information to the system controller 110 via the signal processing unit 120.

  The I / F unit 124 can be connected to a PC, an external storage device, or the like by wired communication or wireless communication, and outputs information acquired from the connection destination to the system controller 110 via the signal processing unit 120.

  The mode setting unit 125 is an operation unit that accepts user operations including various buttons, a touch panel, and the like, and a mode switching instruction for switching the operation mode of the imaging apparatus 100 to a normal shooting mode, a playback mode, a panoramic shooting mode described later, and the like. Is output to the system controller 110 via the signal processing unit 120.

  The release detection unit 126 detects a switch state caused by half-pressing or full-pressing the shutter button of the imaging apparatus 100 and outputs a detection result to the system controller 110 via the signal processing unit 120.

  The system controller 110 includes a CPU, a ROM, a RAM, and the like, and controls the entire image pickup apparatus. Specifically, when the release detection unit 126 detects that the shutter button is half-pressed, the system controller 110 calculates the WB value calculated by the WB calculation unit 141, the exposure value calculated by the exposure calculation unit 142, and the focus detection. Based on the in-focus state detected by the unit 143, imaging preparation operations such as AF (auto focus) processing, AE (auto exposure) processing, AWB (auto white balance) processing, and EF (flash pre-flash) processing are started. . Further, the system controller 110 performs a panorama shooting process described later according to the azimuth information, the position information, and the acceleration information input via the signal processing unit 120.

  The zoom control unit 111 drives the photographing lens 101 according to a control signal from the system controller 110 to perform zooming.

  The IS lens control unit 112 drives an IS lens for camera shake correction according to a control signal from the system controller 110 to perform camera shake correction.

  The focus control unit 113 drives the photographing lens 101 according to a control signal from the system controller 110 to focus on the subject.

  The diaphragm control unit 114 drives the diaphragm 102 in accordance with a control signal from the system controller 110 to adjust exposure.

  The shutter control unit 115 releases the shutter 103 in accordance with a control signal from the system controller 110 and drives and controls the image sensor 104 in accordance with the timing.

  The flash control unit 116 emits the flash 117 in accordance with a control signal from the system controller 110.

  Image data stored in the image memory 130 can be output to an external device such as a computer via the I / F unit 124.

  <Panorama Image Composition Processing> Processing for synthesizing a panorama image from a panorama shot image according to this embodiment will be described with reference to FIG. The processing in FIG. 2 is realized by the system controller 110 developing and executing a control program stored in the ROM in the RAM work area.

  When the panoramic shooting mode is selected by a user operation or power-on setting, the processing of FIG. 2 is started, and the system controller 110 enters a shooting start trigger waiting state. Here, the imaging apparatus 100 can be changed to a setting suitable for panoramic photography as described below by a user operation or the like via the mode setting unit 125. That is, in order to synthesize a background panoramic image only of the background area, a part (background area) in which the person is not captured in the material image is required. When the background area is small, the continuity of the material image for panoramic image synthesis is lost, and the panoramic image is not established. For this reason, by changing the setting of the imaging device so as to increase the area of the background area at the time of shooting, the panorama synthesis process of the background image can be performed efficiently and effectively.

  The following can be considered as a setting for taking a large background area.

(1) Changing the angle of view of the photographic lens to the wide angle side By setting the wide angle side, the ratio of the person to the material image can be reduced, and the background area can be increased. That is,
(2) Move the position of the person to the end When the background area is taken from only one side of the material image, the background area can be made larger by moving the person to the opposite side. As a method of bringing a person to the end, a method of shifting an IS lens, a method of shifting an image sensor, or the like can be considered. In addition, if the photographer can take a panoramic shot while checking his / her appearance, such as the vari-angle function or the front display, the portion that becomes the background area is displayed in advance on the UI screen, and the photographer takes a picture while securing the background area. It may be possible to call attention (see FIG. 3).

(3) Encourage the photographer to hold the camera with one hand Since the background area can be made larger with one hand than with both hands, guidance can be displayed on the UI screen so that it can be held with one hand. Possible (see FIG. 4).

  In order to focus on both the person and the background, in order to increase the depth of field when the panoramic shooting mode is set, it is conceivable to increase the ISO sensitivity and increase the aperture value.

  In this embodiment, since the peripheral portion of the material image is used for panoramic image synthesis, various kinds of aberration correction (distortion correction, peripheral light amount correction, coma aberration, etc.) of the photographic lens are appropriately performed, so that the image joint portion Make it inconspicuous.

  In S <b> 201, the system controller 110 starts capturing a material image when a capturing start trigger is input by the photographer. At this time, the photographer holds the imaging apparatus 100 toward himself as shown in FIG. 11, and rotates around himself / herself simultaneously with the start of photographing.

  Here, as the shooting start trigger, it is conceivable that the shutter button is turned on, the shooting timer is started, a swing is detected by an acceleration sensor, the posture (orientation) of the imaging device matches a predetermined direction, and the like.

  In S202, the system controller 110 repeatedly shoots a material image used for panoramic image synthesis until receiving a shooting end trigger.

  In S203, the system controller 110 ends the shooting of the material image when the shooting end trigger is input by the photographer. Here, as the shooting end trigger, it is conceivable that the shutter button is turned off, the timer is ended, the stop of the image pickup apparatus is detected by an acceleration sensor, the posture (orientation) of the image pickup apparatus matches a predetermined direction, and the like.

  In S204, the system controller 110 extracts only a region (background region) in which the photographer is not captured as a background region material image as a region used for panoramic image synthesis from the material images photographed in S201 to S203. As an extraction method, a known subject detection method, for example, a face detection method is used to identify a subject region, and a strip region including the identified subject region (region divided in units of columns in a direction perpendicular to the panning direction) Extract the area excluding. Incidentally, as for the face detection method, pattern matching based on information such as eyes and mouth stored in advance is exemplified. FIG. 5 is an example of a photographed material image. As the background area, the leftmost area 501 or the rightmost area 502 of the image 500 or both are extracted. The subject region need not be specified for all images, and the extraction region of another image may be determined based on the subject (photographer) detection result of one image. Further, the subject area may always be included in the predetermined area by the UI as described above, and a predetermined subject area and a background area other than the subject area may be set in advance.

  In S205, the system controller 110 performs a background image generation process that combines the image of only the background area extracted in S204 with one background panorama image. In the synthesis of the background image, the synthesis is performed so that the images are connected in the panning direction of the imaging device in the order of photographing the background image. The positions to be combined are matched with the left and right images, and the highest evaluated position is obtained when searching within a certain range.

  FIG. 6 shows how a panoramic image of this embodiment is synthesized. A portion (background region) where a photographer is not captured is extracted from a plurality of material images obtained by panoramic photographing, and a background panoramic image is synthesized using only the background region. After the background panorama image is synthesized, an image (person image) in which the photographer is photographed is selected from the material images, and is superimposed on the background panorama image and synthesized.

  FIG. 6 shows a state in which two images are combined. As a rule for shooting a panoramic image, for example, a minimum overlap of 10% and a maximum of 50% in the horizontal direction, and a vertical shift of 5% or less, respectively. In this case, the minimum overlapping range is a region 603 in the drawing, and the maximum overlapping range is a region 604. And the point corresponding to the point P in the area | region 603 in a figure will exist in the area | region 605 in a figure. That is, the area 605 becomes a search area. Matching is performed while scanning the point P in the search area 605 to find a highly evaluated position.

  In S206, the system controller 110 selects a material image (person image) in which the photographer is photographed to be superimposed on the background panoramic image synthesized in S205. The number selected here may not be one. The background panoramic image synthesized in S205 is displayed on the display unit 150 of the imaging apparatus 100, and the person image is displayed over the image. The photographer can switch the person image to be displayed by a button operation or the like.

At this time, the position where the person images are superimposed is selected from the plurality of material images used when the background panorama image is synthesized, and is arranged so that the background areas overlap each other (see FIG. 7).
The photographer selects his / her image (material image) while viewing the display unit 150.

  Here, in order to assist the photographer in selecting a human image, the imaging device may select a recommended material image and present it to the photographer in a selectable manner. The following can be considered as a method for selecting a recommended material image.

(4) A person image at an arbitrary position with respect to the panorama image A person image at the center of the panorama image or a person image at a position one third of the panorama image so as to form a three-part composition Is selected and presented to the photographer.

(5) Person image without eyes closed Judgment of opening / closing of eyes of a person image using face recognition or the like, and selecting an image without eyes closed.

(6) A person image that is not backlit (7) A person image that faces a specific direction A person image that is captured when the imaging device is facing a specific direction is selected.

(8) Person image not covered with specific direction The person image photographed when the imaging device is facing a specific direction is not selected. For example, when the direction of the landmark is known from GPS information or the like, it is possible to select a person image that does not cover a person in that direction.

  The determination may be performed in consideration of the plurality of conditions.

  In S207, the system controller 110 synthesizes the background panorama image generated in S205 and the person image selected in S206. The composition position is on the background image on which the person image is displayed in S206.

  Depending on the shooting situation at this time, the edge of the image that is not used as the background area in the person image may not necessarily overlap cleanly with the background image. For this reason, it may be possible to perform processing such as blurring an edge of an image on the side that is not used as a background area of a person image so that the cut is inconspicuous.

  [Embodiment 2] With reference to FIGS. 8 and 9, the panoramic image composition processing of Embodiment 2 will be described. Note that the configuration of the imaging apparatus of the present embodiment is the same as that of the first embodiment.

  FIG. 8 shows a state in which the panoramic image of the second embodiment is synthesized. In this embodiment, one material image (person image) showing the photographer is determined, and the panorama image is synthesized using only the left edge of the material image on the left side and only the right edge of the material image on the right side. To do. The person image is determined after the material image is taken.

  <Panorama Image Synthesis Processing> Processing for synthesizing a panorama image from a panorama shot image according to this embodiment will be described with reference to FIG. 9 is also realized by the system controller 110 developing and executing a control program stored in the ROM in the work area of the RAM.

  9, S901 to S903 perform the same processing as S201 to S203 in FIG.

  In S904, the system controller 110 selects a material image (person image) showing a photographer to be superimposed on the background area from the material images photographed in S901 to S903, as in S206 of FIG. The number selected here may not be one. A person image is displayed on the display unit 150 of the imaging apparatus 100. The photographer selects his / her image (material image) while switching the person image to be displayed by button operation or the like.

  Here, in order to assist the photographer in selecting a human image, the imaging device may select a recommended material image and present it to the photographer in a selectable manner. The method for selecting a recommended material image is the same as that in S206.

  In S905, the system controller 110 extracts a background area used for panoramic image synthesis from the material images photographed in S901 to S903, as in S204 of FIG.

  In S906 and S907, the system controller 110 combines the person image selected in S904 and the background region image extracted in S905 into one panoramic image.

  In this panoramic image composition, material images are arranged in the order of shooting, with the background image extracted from the left side of the material image centered on the material image selected as the person image, the background image extracted from the right side of the material image is on the right side. , And combine them so that they are connected. The positions to be combined are matched with the left and right images, and the highest evaluated position is obtained when searching within a certain range. The matching method is the same as in the first embodiment.

  [Third Embodiment] With reference to FIG. 10, a panoramic image synthesis process according to a third embodiment will be described. Note that the configuration of the imaging apparatus of the present embodiment is the same as that of the first embodiment.

  In the present embodiment, as in the second embodiment shown in FIG. 8, one material image (person image) in which the photographer is photographed is determined, the left side of the material image is only the left edge of the material image, and the right side is the material image. A panoramic image is synthesized using only the right edge of. The person image is determined before or during the shooting of the material image.

  <Panorama Image Synthesis Processing> Processing for synthesizing a panoramic image from a captured image according to this embodiment will be described with reference to FIG. Note that the processing of FIG. 10 is also realized by the system controller 110 developing and executing a control program stored in the ROM in the work area of the RAM.

  10, S1001 performs the same processing as S201 of FIG. 2, and S1006 to S1009 performs the same processing as S903 to S907 of FIG.

  In S1002 and S1003, the system controller 110 repeatedly shoots the background material image used in the panoramic image synthesis until the person image capturing position is reached. At this time, if the person is photographed so as to be at the edge of the material image by moving the IS lens or the image sensor, the background area can be enlarged.

  When the position of the person image is reached in S1003, the background material image is interrupted and the person image is captured. At this time, the IS lens or the image sensor is moved so that the person is in the center of the image in preparation for taking a human image.

  The following method can be considered as the method for determining the shooting position of a person image.

(9) Human image at an arbitrary position with respect to the panorama image Before the start of shooting, if you know the length, shooting time, and orientation of the combined panorama image, determine the swing angle, etc. and complete from those settings A person image is photographed so that the person is at a specific position with respect to the panorama image to be displayed.

  As the specific position, the center of the image, a position corresponding to a three-part composition, or the like can be considered.

(10) Person image with eyes not closed The face of the person image is determined to be opened or closed using face recognition or the like, and the image is taken when the eyes are not closed.

(11) A person image that is not backlit Take a picture at a position that is not backlit.

(12) A person image facing a specific direction A person image is captured when the imaging apparatus is facing a specific direction.

  In an imaging apparatus that can acquire a direction in which the camera is facing, a person image is captured when the imaging apparatus is facing a specific direction.

(13) Human image not covered with specific direction A human image is taken except when the imaging device is facing a specific direction. For example, when the direction of the landmark is known from GPS information or the like, shooting is performed so that the person and the direction are not covered.

  The determination may be performed in consideration of the plurality of conditions. Further, a person image may be taken at an arbitrary timing such as a button operation of the photographer.

  In S1004, the system controller 110 captures a material image (person image) in which the photographer is photographed. The number of shots need not be one. In addition, it is possible to brightly photograph a human face by emitting the flash 117.

  In S1005 and S1006, the system controller 110 repeats the capturing of the material image until receiving a capturing end trigger. At this time, due to the movement of the IS lens or the image sensor, the person is photographed so as to be positioned at the end opposite to the material image photographed in S1002.

  After the end of shooting in S1006, the person image and the background area image are combined into one panoramic image, as in S905 to S907 of FIG.

  [Other Embodiments] The present invention is also realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, etc.) of the system or apparatus reads and executes the program code. It is processing to do. In this case, the program and the storage medium storing the program constitute the present invention.

Claims (13)

An imaging apparatus comprising: an imaging unit; and a combining unit that combines a plurality of images captured by the imaging unit,
Subject detection means for detecting a subject from an image photographed by the photographing means;
Background extraction means for extracting a background region from the plurality of images based on a detection result of the subject detection means;
A background image generating means for generating a background image having a wider angle of view than the plurality of images by combining the extracted background regions so as to connect the extracted images;
A panorama image synthesizing unit that selects an image in which the subject is detected by the subject detection unit from the plurality of images and synthesizes the image with the background image generated by the background image generation unit to generate a panorama image. An imaging device that is characterized. An imaging apparatus comprising: an imaging unit; and a combining unit that combines a plurality of images captured by the imaging unit,
Subject detection means for detecting a subject from an image photographed by the photographing means;
Panorama image synthesizing means for synthesizing an area other than the subject area of another image with one of the plurality of images to generate a panoramic image having a wider angle of view than each of the plurality of images; Have
The image synthesized at the left angle of view with respect to the one image by the panoramic image synthesizing means is obtained by extracting and synthesizing the left area of the area where the subject is detected from the other image. The image combined at the right angle of view with respect to the one image is obtained by extracting and synthesizing a region on the right side of the region where the subject is detected from the other image. apparatus.   The imaging apparatus according to claim 1, further comprising mode setting means for setting an operation mode of the imaging apparatus to a panoramic shooting mode. Zoom control means for changing the photographic lens to the wide angle side in the panoramic shooting mode;
The imaging apparatus according to claim 3, further comprising aperture control means for changing the aperture value to a large value.   The imaging apparatus according to claim 3, wherein in the panoramic shooting mode, the imaging unit moves the position of the subject to an end by shifting a lens for correcting camera shake or an imaging element.   The imaging apparatus according to claim 3, further comprising display means for displaying a portion to be the background area in the panoramic shooting mode.   The imaging apparatus according to claim 1, further comprising a presentation unit that presents an image of a photographer in a selectable manner from the plurality of images.   Instead of selecting an image in which the subject is detected from the plurality of images, the photographing unit captures the image when the photographing position of the image in which the subject is captured is captured during the photographing of the image. The imaging apparatus according to claim 2, wherein the image is captured while the subject is captured.   When photographing an image in which the subject is photographed, the photographing means changes the photographing position so that the subject is located at the center of the image by shifting a lens for correcting camera shake or an image sensor. The imaging apparatus according to claim 8, wherein the imaging apparatus is characterized. An imaging apparatus control method comprising: an imaging unit; and a combining unit that combines a plurality of images captured by the imaging unit,
A subject detection step of detecting a subject from an image photographed by the photographing means;
A background extraction step of extracting a background region from the plurality of images based on a detection result of the subject detection step;
A background image generation step of generating a background image having a wider angle of view than the plurality of images by combining the extracted background regions so as to connect the extracted images;
A panoramic image synthesis step of selecting an image in which the subject is detected by the subject detection step from the plurality of images and synthesizing the image with the background image generated by the background image generation step to generate a panoramic image. A control method for an imaging apparatus. An imaging apparatus control method comprising: an imaging unit; and a combining unit that combines a plurality of images captured by the imaging unit,
A subject detection step of detecting a subject from an image photographed by the photographing means;
A panoramic image synthesis step of synthesizing an area other than the subject area of another image with one image of the plurality of images to generate a panoramic image having a wider angle of view than each of the plurality of images; Have
The image synthesized at the left angle of view with respect to the one image by the panoramic image synthesis step is an image obtained by extracting an area on the left side of the area where the subject is detected from the other image. The image combined at the right angle of view with respect to the one image is obtained by extracting and synthesizing a region on the right side of the region where the subject is detected from the other image. Control method of the device.   The program for functioning a computer as each means of the imaging device described in any one of Claims 1 thru | or 9.   A computer-readable storage medium storing a program for causing a computer to function as each unit of the imaging apparatus according to any one of claims 1 to 9.