JP5663682B2 - Imaging apparatus and imaging method - Google Patents

Description

  The present invention relates to an imaging apparatus and an imaging method for imaging a subject, and more particularly, to an imaging apparatus and an imaging method for displaying observation information of an astronomical object for photographing a landscape photograph or the like.

  The scenery in the time zone before and after the sunrise time or sunset time is different from the scenery in the daytime, that is, the time zone where the sun is high, and is impressive, so it is popular as a subject for imaging devices such as cameras. . However, for example, a sunset scene needs to be photographed in a specific direction at a specific time. However, the sunset time and sunset direction change every day, and also change depending on the shooting location. For this reason, it is sometimes difficult for the user to take a picture of the sunset scenery. The same was true for the appearance of other objects such as the moon.

  Japanese Patent No. 2569097 discloses an imaging apparatus that superimposes and displays a sun trajectory on a captured image.

  Japanese Patent Laid-Open No. 2008-17223 discloses an imaging device that superimposes and displays a guide image on a captured image when shooting a starry sky.

  However, since the known imaging device requires a complicated operation, it may not be easy for a user to obtain necessary information. Further, the known imaging device has a complicated configuration, and it cannot be said that it is easy to operate for a user who intends to take a landscape photograph or the like.

Japanese Patent No. 2569097 JP 2008-17223 A

  An object of the present invention is to provide an imaging apparatus and an imaging method excellent in operability capable of displaying astronomical information with a simple operation.

An imaging apparatus according to an embodiment of the present invention detects an empty portion from an imaging unit that captures a subject image and generates a captured image, a display unit that includes a display surface that displays the captured image, and the captured image. A sky detection unit, a position setting unit for setting an observation position, a database unit for storing position information of the sun or a celestial body composed of the sun and the moon, and the celestial body from the observation position based on the position information of the celestial body An information calculation unit that calculates the appearance time of the celestial body as observation information for observing the image, and an appearance time correction unit that corrects the appearance time to a corrected appearance time that can capture the entire image of the celestial body from the observation position ; A display control unit that performs control to superimpose and display a virtual image of the celestial body at the corrected appearance time in accordance with the angle of view of the captured image on the empty portion of the captured image.
In another embodiment, an imaging method includes: an imaging unit that captures a subject image and generates a captured image; a display unit that includes a display surface that displays the captured image; An information calculation unit of an imaging apparatus comprising: a detection unit; a position setting unit that sets an observation position; and a database unit that stores position information of a celestial body. An information calculation step for calculating the appearance time of the celestial body as observation information for observing the celestial body, and an appearance time correction unit that corrects the appearance time to a corrected appearance time that can capture the whole image of the celestial body from the observation position. and infested time correction step of, display control unit of the imaging device, wherein the correction infested time, a virtual image of the celestial body of the magnitude corresponding to the angle of view of the captured image, the empty part of the captured image Overlay display A display control step of performing control that comprises a.

  According to the present invention, it is possible to provide an imaging device and an imaging method excellent in operability that can display astronomical information with a simple operation.

FIGS. 1A and 1B are schematic views illustrating an appearance of a camera according to an embodiment, FIG. 1A is a perspective view when observed from an oblique front, and FIG. 1B is a perspective view when observed from an oblique rear. It is a block diagram which shows the structure of the camera of embodiment. It is a flowchart for demonstrating the flow of a process of the camera of embodiment. It is explanatory drawing which shows an example of the operation state (A) and display screen (B) of the camera of embodiment. It is explanatory drawing which shows an example of the display screen of the camera of embodiment. It is explanatory drawing which shows an example of the operation state (A) and display screen (B) of the camera of embodiment. It is explanatory drawing which shows an example of the display screen of the camera of embodiment. It is explanatory drawing which shows an example of the operation state of the camera of embodiment. It is explanatory drawing which shows an example of the display screen of the camera of embodiment. It is explanatory drawing which shows an example of the display screen of the camera of embodiment.

  As shown in FIG. 1, a camera 1 that is an imaging apparatus according to the present embodiment includes an interchangeable lens 10, a body 20, and an astronomical unit 40.

  The celestial unit 40 according to the present embodiment is an accessory of the camera 1 and provides the user with observation information for observing the sun and the moon, which is necessary for photographing the time zone before and after the sun and moon appear and disappear. . The celestial unit 40 is detachable from a camera connector (for example, a hot shoe to which a strobe is attached) 23 at the top of the body 20, and a user attaches the celestial unit 40 to the body 20 as necessary. The interchangeable lens 10 is also detachable from the body 20, and the user attaches the interchangeable lens 10 suitable for the purpose to the body 20 for use. In the camera 1, the display surface 25 </ b> A of the display unit 25 that displays captured images and the like is perpendicular to the optical axis of the interchangeable lens 10 on the back surface of the body 20 (the surface facing the surface on which the interchangeable lens 10 is disposed). Has been placed. The user presses the shutter button 29A while viewing the through image displayed on the display surface 25A.

  Next, the configuration of the camera 1 will be described with reference to FIG. Since the interchangeable lens 10 and the body 20 of the camera 1 are general-purpose devices, they will be briefly described.

  The interchangeable lens 10 includes a lens 11, a focus adjustment / zoom mechanism unit 12, a motor 13, a lens controller 14, and a lens connector 15. The lens 11 is composed of a plurality of lenses constituting an imaging optical system. The focus adjustment / zoom mechanism unit 12 is driven by a motor 13 controlled by the lens controller 14 to perform focus adjustment / zoom operations. The lens connector 15 is a member for attaching to the lens mount 28 of the body 20 and has an electrical connection contact.

  The body 20 includes a system controller 21, an imaging unit 22, a camera connector 23, a display element driving unit 24, a display unit 25 having a display surface 25A, a card memory 26, a camera storage unit 27, and a lens mount 28. An operation member 29, a timepiece 30, and a communication unit 31. The imaging unit 22 includes an imaging element such as a CCD, and forms a captured image obtained by capturing a subject image via the lens 11. The system controller 21 includes an AE control unit 21A that controls exposure time, an AF control unit 21B that performs focus adjustment control, and an image processing unit 21C that performs processing of a captured image, and further controls the entire camera 1. .

  The camera connector 23 is a hot shoe, for example, and is a member for attaching accessories such as the celestial unit 40 to the body 20 and has an electrical connection contact. The display unit 25 displays a captured image or the like on the display surface 25 </ b> A of the display element configured by liquid crystal, organic EL, or the like by driving the display element driving unit 24. The card memory 26 is a medium that can be attached to and detached from the body 20 for recording captured images and the like. The camera storage unit 27 is a flash memory that stores programs and the like necessary for the operation of the system controller 21 that are transferred to the system controller 21 at the time of activation. The lens mount 28 is a member for attaching the interchangeable lens 10 and has an electrical connection contact. The operation member 29 is a shutter button 29 </ b> A or the like that determines when the user turns on / off the power, sets a mode to be described later, or acquires a captured image stored in the card memory 26. The clock 30 generates date and time information, that is, time and date information. The communication unit 31 is connected to an external network or an external device, and transmits / receives data including a captured image.

  The celestial unit 40 stores the position information of the attitude detector 44, the position setting unit 46, the bearing detection unit 43, the altitude detection unit 42, the radio clock 47, the accessory storage unit 49, and the sun and the moon. A database unit 48, an accessory controller 41 that controls the entire celestial unit 40, and an accessory connector 45. The accessory controller 41 analyzes the captured image by an information calculation unit 41A that calculates observation information, a display control unit 41B that performs control to display observation information on the display surface 25A, an appearance time correction unit 41C that corrects the appearance time. An empty detection unit 41D for detecting an empty part.

  Note that the information calculation unit 41A, the display control unit 41B, the empty detection unit 41D, and the like do not have to be dedicated hardware, but are stored in the accessory storage unit 49 and transferred to the accessory controller 41 and executed at startup. Although it may be a program, it is expressed as “part” as a component for convenience of explanation. The same applies to some of the components of the body 20 already described. In addition, the display control unit 41B described as a function of the accessory controller 41 may be transferred to the system controller 21 of the body 20 and operated at the time of activation.

  The posture detection unit 44 includes a triaxial acceleration sensor 44A and an acceleration sensor processing unit 44B, and detects the posture of the body 20 to which the celestial unit 40 is attached, that is, the posture of the display surface 25A. The triaxial acceleration sensor 44A is composed of, for example, three MEMS acceleration sensors arranged in directions orthogonal to each other, and detects the gravitational acceleration direction, that is, the vertical direction based on the capacitance change between the movable electrode and the fixed electrode. To do. In relation to the function of the celestial unit 40, the posture detection unit 44 only needs to be able to detect whether the display surface 25A is in a horizontal posture or a vertical posture.

  The position setting unit 46 has a global positioning system (GPS) including a GPS receiving antenna 46A, a GPS receiving unit 46B, and a GPS decoder unit 46C. The GPS detects a position (latitude, longitude) on the ground surface by receiving signals from several satellites. Furthermore, the position setting unit 46 can detect altitude (altitude) by GPS. The position setting unit 46 sets the ground surface position detected by the GPS as the observation position of the observation information provided by the celestial unit 40.

  The azimuth detection unit 43 includes a geomagnetic sensor 43A such as an MR sensor and a geomagnetic sensor processing unit 43B, and detects the direction of true north by detecting the geomagnetism direction (magnetic pole) and correcting the magnetic declination. .

  The radio clock 47 has a standard radio wave receiving antenna 47A, a standard radio wave receiver 47B, and a clock decoder 47C, and calibrates the clock 30 based on date / time information digital signals from the transmitting station. The altitude detection unit 42 includes a pressure sensor 42A and a pressure sensor processing unit 42B, and detects the atmospheric pressure and altitude at the observation point. That is, the altitude detection unit 42 detects the altitude at the point after movement by calibration at a point at a known altitude.

  And the database part 48 has memorize | stored the sun and moon appearing time, appearing direction, and correction coefficient in a specific observation position, for example, Tokyo, as table data corresponding to the date. These data are publicly available and can be easily obtained, but considering the sight radius of the celestial body, atmospheric differences, eye height differences due to the eye level of the observer, the sun's geocentric parallax, etc. When the altitude from-is 0.9 degrees, it is defined as haunting.

  The information calculation unit 41A, the display control unit 41B, the appearance time correction unit 41C, and the sky detection unit 41D will be described later. Among the components described above, the database unit 48, the information calculation unit 41A, the display control unit 41B, and the appearance time correction unit 41C are dedicated components of the celestial unit 40, but other components are different in the imaging apparatus. It can also be used for purposes. For this reason, at least the database unit 48, the information calculation unit 41A, the display control unit 41B, and the appearance time correction unit 41C may be stored in the celestial unit 40. Since the dedicated components are all software, they can be transferred to the CPU of the body 20 and operated. The celestial unit 40 may have other sensors such as a temperature detection unit (not shown).

Next, the flow of the observation information display process by the camera 1 of the present embodiment will be described with reference to the flowchart of FIG.
<Step S11> System Initial Setting The interchangeable lens 10 and the astronomical unit 40 are attached to the body 20 of the camera 1, and the power is turned on. Then, the program stored in the camera storage unit 27 and the accessory storage unit 49 is transferred to the system controller 21 or the accessory controller 41, and the program is activated. Then, the system is initialized.

<Step S12> Live View Start In the camera 1, the captured image generated by the imaging unit 22 is displayed on the display unit 25 or recorded in the card memory 26. Under the control of the system controller 21, imaging and display are continuously performed, so that a live view image, that is, a through image is displayed on the display surface 25A. The user checks the composition while viewing the through image, or determines the timing for acquiring the captured image to be recorded in the card memory 26.

<Step S13> Operation Mode Selection In the camera 1, the celestial mode can be selected as the operation mode in addition to the normal shooting mode or the reproduction mode.

  For example, if the normal shooting mode is selected, a normal shooting operation subroutine is executed in step S14. When the celestial mode is selected, the operation from step S15 is performed.

<Steps S15 and S16> Accessory Detection The system controller 21 detects whether the celestial unit 40 is attached as an accessory. When it is attached (S16: Yes), the operation from S17 is performed, but when it is not attached (S16: No), the operation from S13 is repeated.

<Step S17> Celestial Object Selection In the camera 1, the sun or the moon can be selected as the celestial object. That is, the database unit 48 stores sun and moon position information. When the month is selected, the moon appearance information is calculated / displayed in the subroutine processing of S18, but since it is similar to the calculation / display processing of the sun appearance information described later, the details will not be described. Similarly, the following subroutine processing will not be described in detail. When the sun is selected, the operation from S19 is performed.

<Step S19> Acquisition of Basic Data When the sun is selected, the information calculation unit 41A acquires basic data for calculating observation information for sunrise and sunset. That is, the position setting unit 46 detects / sets the observation position, and the date / time is detected from the clock 30 or the radio clock 47, and the data of the sun's appearance direction, appearance time, and correction coefficient for the day, for example, Tokyo, is obtained from the database unit 48. It is transferred to the information calculation unit 41A.

<Step S20> Sunrise / Sunset Determination The information calculation unit 41A determines whether to display observation information of sunrise or sunset from the current time. That is, if it is a time before the sunrise time in Tokyo, the observation information for sunrise is displayed by the subroutine processing of S21, and if it is after the sunrise time, the observation information for sunset is displayed by the processing from S22. Is displayed.

<Step S22> Sunset Time Calculation The information calculation unit 41A is obtained from the sunset time T0 and correction coefficients A and B of Tokyo (139.7 degrees east longitude and 35.7 degrees north latitude) of the day acquired from the database unit 48. The sunset time T at the observation position is calculated by a known method. For example, when the observation position is east longitude λ and north latitude φ, the sunset time T at this point is calculated from the following approximate expression.

    T = T0 + A (139.7−λ) + B (35.7−φ)

  For example, A is 3.9 and B is 2.9. In other words, the sunset time is 3.9 minutes earlier for every 1 degree longitude from Tokyo to the east, and 2.9 minutes for every 1 degree latitude to the north.

<Step S23> Sunset Direction Calculation As with the sunset time calculation, the information calculation unit 41A determines the sunset at the observation position by a known method from the Tokyo sunset direction and correction coefficient acquired from the database unit 48 of the day. Calculate the bearing.

<Step S24> Posture Detection The posture detection unit 44 detects whether the display surface 25A of the display unit 25 is in a horizontal posture or a vertical posture.

<Steps S25 and S26> Direction Detection / Sunset Direction Display As shown in FIG. 4A, the posture of the display surface 25A of the camera 1 held by the user OP is substantially horizontal, that is, orthogonal to the gravity direction GD. In the horizontal direction HD, the display control unit 41B graphically displays the sunset direction on the display surface 25A with the arrow 25Y as shown in FIG. 4B.

  With the above display form, the user can intuitively grasp the sunset direction. In the example shown in FIG. 4B, the arrow 25Y indicates that the direction in which the user OP is facing, that is, the upper direction of the display surface 25A is a direction that is significantly different from the sunset direction.

  In the present invention, the horizontal posture of the display surface 25A means that the user OP can easily see the display surface 25A from above, and is within a predetermined angle range from the horizontal plane, for example, within a range of ± 30 degrees. State. Similarly, the vertical posture is a state within a range of a predetermined angle from the vertical plane, for example, a range of ± 30 degrees. If it is the said range, a user can visually recognize 25 A of display surfaces easily.

  In order to display the sunset direction, the display control unit 41B first calculates a virtual line 25N indicating the north direction on the display surface 25A, as shown in FIG. The virtual line 25N is calculated based on the direction detected by the direction detection unit 43 at that time, and is reflected in the display in real time. Then, as shown in FIG. 5B, an arrow 25Y is displayed based on the azimuth angle θA indicating the sunset azimuth calculated by the information calculation unit 41A. In this case, the azimuth angle θA is 0 degrees in the north and 90 degrees in the west.

  In addition, when displaying the sunset direction, it is preferable not to display the through image. This is because when the display surface is in a horizontal state, the through image is an image of the ground under the user's feet, which hinders the user's viewing of the orientation display. Of course, there is a need to take a picture of the foot, so corresponding to this case, the display of the sunset direction can be canceled by operating the operation member 29 such as a release switch, or the display of the sunset direction can be made translucent. You may control so that it may be superimposed on a through image.

<Step S27> Sunset Time Display The posture of the display surface 25A of the camera 1 that the user who knows the sunset direction from the display of S25 changes the observation direction is substantially vertical as shown in FIG. That is, in the case of the substantially gravitational direction GD, the display control unit 41B cooperates with the system controller to display the corrected sunset time TR (25T) and the sunset direction on the display surface 25A as shown in FIG. The virtual sun image 25S at the line SD and the corrected sunset time TR is superimposed and displayed on the live view image. In the case of the moon, a virtual image having a shape corresponding to the age of the moon may be used.

  According to the display mode, the user can accurately check the time suitable for shooting as a number, and can also check a landscape that can be captured at that time.

  Here, the corrected sunset time TR is a time when the sunset time correction unit 41C has corrected the sunset time T calculated by the information calculation unit 41A. That is, the sunset time T is a time when the altitude angle θE of the upper side of the sun is approximately 0 degrees (−0.9 degrees) in the case of the sun, and the altitude angle θE at the center of the moon is approximately in the case of the moon. It is time when it becomes 0 degree. However, a user who intends to take a landscape photograph often desires to take a picture at a time several minutes before the time when the sun completely falls below the horizon.

  For this reason, in the camera 1, the appearance time correction unit 41 </ b> C corrects the sunset time T from the observation position to at least a corrected sunset time TR at which an entire image of the sun can be captured. At this time, the appearance time correction unit 41 </ b> C performs correction according to the angle of view ω of the captured image, that is, the focal length F of the interchangeable lens 10. That is, as shown in FIG. 7A, when the interchangeable lens 10 is a wide-angle lens with a large angle of view ω of the captured image, correction is performed at an earlier time than in the case of the standard lens shown in FIG. As shown in FIG. 7B, when the interchangeable lens 10 is a telephoto lens having a small angle of view ω of the captured image, correction is performed at a later time than in the case of the standard lens.

  The degree of correction performed by the appearance time correction unit 41C, that is, the length of time or the amount of movement of the virtual image can be set by the user. For example, when the angle of view ω is used as a reference, the angle of view 5 is 5 A range of ˜60% is preferred. If it is within the range, a natural virtual landscape desired by the user is obtained.

  Furthermore, since the camera 1 has the sky detection unit 41D, it is possible to present observation information more suitable for photographing. That is, in mountainous areas or urban areas, the time when the sun appears in the sky as an imaging target is different from the time based on the horizon because it is obstructed by objects on the ground such as mountains or buildings. In the camera 1, the virtual sun image 25S is superimposed and displayed on the live view image based on the apparent height of the mountain from the observation position detected by the sky detection unit 41D, that is, the correction date calculated by the appearance time correction unit 41C. The dead time TR is changed.

  For example, as illustrated in FIG. 8, when the mountain M is in the sunset direction, as illustrated in FIG. 9A, the sky detection unit 41 </ b> D is (1) an upper portion of the sunset azimuth line SD of the captured image. It is judged whether there is a low contrast portion having a low contrast. Further, (2) it is determined whether there is a light / dark boundary below the low contrast portion. (3) When there is a light / dark boundary, an empty boundary line parallel to the horizontal line is calculated, for example, at a position of 1 / n from the center of the image having the angle of view ω. Then, the elevation angle θX at this time is calculated from the following equation.

    θX = (1 / n) × ω

  In the camera 1, the appearance time correction unit 41C further corrects the corrected sunset time TR calculated based on the horizontal line HL according to the elevation angle θX. For this reason, the camera 1 can present observation information more suitable for photographing even in a mountainous area or the like.

<Step S28> Operation Mode Confirmation When the operation mode has not been changed, the camera 1 repeats the processing from S24. On the other hand, when the operation mode is changed, the processing of the selected operation mode is performed by the processing from S13.

  As described above, the camera 1 is an imaging device with excellent operability that can display information regarding the appearance of the sun and the moon as target celestial bodies with a simple operation.

  Note that the time of appearance of the celestial body also changes depending on the altitude (altitude) of the observation place. In the camera 1, since the altitude of the observation place can be detected by the altitude detecting unit 42 or the position setting unit 46, the information calculating unit 41A can perform correction according to the altitude by a known method.

  Moreover, although the case where the display unit 25 is fixed to the back surface of the body 20 has been described as an example in the above description, a display unit that is rotatable with respect to the body 20 may be used. In this case, the sensor disposed in the rotating unit serves as a posture detection unit that detects whether the display surface is in a horizontal posture or a vertical posture.

  In the above description, as a method for calculating the solar appearance time and the like by the information calculation unit 41A, a method that can be processed in a short time with a small system load is described. However, a known calculation method with higher accuracy can be used as an optional function according to the user's request.

  For example, in the case of the sun, the position in the celestial coordinate system goes around the ecliptic in 365.25 days. For this reason, first, the equator coordinate values (red longitude α, declination β) corresponding to the month and day are calculated from the stored table or the calculation formula for calculating the equator coordinate values. Then, by using the equator coordinate values (red longitude α, declination β), the longitude λ, latitude φ and time (local stellar time) SG of the observation place, for example, according to the following known formula, the altitude angle E And the azimuth A are calculated. By calculating the condition that the altitude angle E is 0 degree, the appearance time and the like are calculated.

    Altitude angle: sin (E) = sin (φ) × sin (β) + cos (φ) × cos (β) × cos (SG−α)

    Azimuth: sin (A) = cos (β) × sin (SG−α) / cos (E)

  Moreover, although the case where Tokyo was used as a specific observation position serving as a calculation reference for the appearance time and the like has been described, information on a plurality of cities or points is stored in the database unit 48, and information on the point closest to the observation position is stored. You may make it use. Furthermore, information according to the user's main place of use, such as North American specifications, European specifications, or Australian specifications, may be used. Further, information on a point scheduled to be used may be obtained and used via the communication unit 31 or the like.

  The astronomical unit 40 not only performs processing based on the position detected by the position setting unit 46 using GPS and the date and time detected by the clock 30, but the user uses the position setting unit 46 to select, for example, a city name It is also possible to display observation information at an arbitrary date and time at an arbitrary point. For example, FIG. 10 is a display surface 25A displaying the sunset direction of the first day of every month at a certain point.

  Furthermore, although the camera 1 that provides sun and moon information as a celestial body has been described, it may be a camera that provides only information on the sun that is particularly requested by users. Further, the imaging device is not limited to the camera 1 having the interchangeable lens 10, and may be, for example, a compact camera incapable of lens replacement, a mobile phone with a camera, or a smartphone. The imaging device has a simpler configuration. Furthermore, an imaging device in which all or part of the components of the celestial unit 40 are provided in the body 20 may be used.

  Conversely, the camera of the present invention can also provide observation information relating to planets such as Venus, stars, artificial satellites, or comets as celestial bodies. The user can obtain information on these celestial bodies via, for example, the communication unit 31.

  That is, the present invention is not limited to the above-described embodiment, and various changes and modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Camera, 10 ... Interchangeable lens, 11 ... Lens, 12 ... Focus adjustment / zoom mechanism part, 13 ... Motor, 14 ... Lens controller, 15 ... Lens connector, 20 ... Body, 21 ... System controller, 22 ... Imaging part, DESCRIPTION OF SYMBOLS 23 ... Camera connector, 24 ... Display element drive part, 25 ... Display part, 25A ... Display surface, 26 ... Card memory, 27 ... Camera storage part, 28 ... Lens mount, 29 ... Operation member, 30 ... Clock, 31 ... Communication 40, celestial unit, 41, accessory controller, 41A, information calculation unit, 41B, display control unit, 41C, appearance time correction unit, 41D, sky detection unit, 42, altitude detection unit, 43, direction detection unit, 44 ... posture detection unit, 45 ... accessory connector, 46 ... position setting unit, 47 ... radio clock, 48 ... database unit, 49 ... accessory storage unit

Claims (10)

An imaging unit that captures a subject image and generates a captured image;
A display unit having a display surface for displaying the captured image;
A sky detection unit for detecting a sky part from the captured image;
A position setting unit for setting the observation position;
A database unit for storing position information of the sun or a celestial body composed of the sun and the moon ;
An information calculation unit that calculates the appearance time of the celestial body as observation information for observing the celestial body from the observation position based on the position information of the celestial body;
An appearance time correction unit that corrects the appearance time to a corrected appearance time that can capture the entire image of the celestial body from the observation position ;
A display control unit that performs control to superimpose and display a virtual image of the celestial body at the corrected appearance time in accordance with the angle of view of the captured image on the empty portion of the captured image. An imaging device that is characterized.   The celestial body is the moon,
  The imaging apparatus according to claim 1, wherein the display control unit superimposes and displays the virtual image having a shape according to age.   The imaging apparatus according to claim 1, wherein the appearance time correction unit corrects the appearance time to the corrected appearance time according to an angle of view of the captured image.   The said position setting part has a global positioning system, The position detected by the said global positioning system is set as the said observation position, The any one of Claims 1-3 characterized by the above-mentioned. The imaging device described. The global positioning system has a function of an altitude detecting unit for detecting altitude,
The imaging apparatus according to claim 4, wherein the information calculation unit corrects the direction of appearance of the celestial body based on an altitude detected by the global positioning system. The position information of the celestial body stored in the database unit is observation information of the celestial body at a specific observation position,
The information calculation unit calculates the observation information for observing the celestial body from the observation position based on the difference between the latitude and longitude of the specific observation position and the latitude and longitude of the observation position. The imaging device according to any one of claims 1 to 5.   7. The body having the imaging unit and the display unit, and a detachable celestial unit contain at least the database unit, the information calculation unit, and the display control unit. The imaging device according to any one of the above. An imaging unit that captures a subject image and generates a captured image, a display unit that includes a display surface that displays the captured image, a sky detection unit that detects an empty portion from the captured image, and a position for setting an observation position An information calculation unit of an imaging apparatus including a setting unit and a database unit that stores position information of the celestial body, the observation information for observing the celestial body from the observation position based on the position information of the celestial body An information calculating step for calculating the time of appearance of the celestial body;
An appearance time correction unit that corrects the appearance time to a corrected appearance time at which the entire image of the celestial body can be captured from the observation position,
Display for controlling the display control unit of the imaging apparatus to superimpose and display the virtual image of the celestial body having a size corresponding to the angle of view of the captured image at the corrected appearance time on the captured image. And a control step.   The celestial body is the moon,
  The imaging method according to claim 8, wherein in the display control step, the virtual image having a shape corresponding to the age is displayed in a superimposed manner.   The imaging method according to claim 8 or 9, wherein the appearance time correction unit corrects the appearance time to the corrected appearance time according to an angle of view of the captured image.

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