JP2012004763A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera capable of preparing to prevent failure of taking an image including a natural status with a desired composition in advance.SOLUTION: A camera comprises an imaging part 32 for taking a subject, a display part 22 for displaying a through image based on imaging signals from the imaging part, a self-position measuring part 12 for measuring a self-position, an orientation measuring part 14 for measuring an imaging orientation with the imaging part, a storage part 46 for storing information to calculate a position and a trajectory of a celestial, a celestial position calculation part 8 for calculating the position and the trajectory using the self-position, the imaging orientation and the information, a display control part 24 for overlaying and displaying the position and the trajectory of the celestial calculated by the celestial position calculation part on the through image, an operation part 26 designating a predetermined location at the display part, and a setting part 8 for setting an imaging constant based on the position of the celestial designated by the operation part.

Description

  The present invention relates to a camera.

  There is known a camera that can superimpose and display a trajectory of an astronomical object obtained by a simulation calculation on a through image (for example, see Patent Document 1). In this camera, an image including a natural situation can be taken with a desired composition using the position of the celestial body based on the operation trajectory.

Japanese Patent No. 3569097

  However, in this camera, the user must set shooting constants such as exposure value and white balance value when shooting an image including a natural situation with a desired composition. There was a risk of shooting failure.

  An object of the present invention is to provide a camera capable of making a preliminary preparation for preventing failure in photographing an image including a natural situation in a desired composition.

  The camera according to the present invention includes a photographing unit that photographs a subject, a display unit that displays a through image based on a photographing signal from the photographing unit, a self-position measuring unit that measures self-position, and photographing by the photographing unit. An azimuth measuring unit that measures an azimuth, a storage unit that stores information for calculating the position and trajectory of the celestial body, and a calculation of the position and trajectory of the celestial body using the self position, the imaging azimuth, and the information. A celestial body position calculation unit, a display control unit that superimposes and displays the position and locus of the celestial body calculated by the celestial body position calculation unit, an operation unit that designates a predetermined location in the display unit, and the operation And a setting unit that sets an imaging constant based on the position of the celestial body specified by the unit.

  According to the camera of the present invention, it is possible to prepare in advance for preventing a failure in photographing an image including a natural situation in a desired composition.

It is a block diagram which shows the system configuration | structure of the camera which concerns on embodiment of this invention. It is a figure which shows the image displayed on the LCD display part of the camera which concerns on embodiment of this invention. It is a figure which shows the image displayed on the LCD display part of the camera which concerns on embodiment of this invention. It is a figure which shows the image displayed on the LCD display part of the camera which concerns on embodiment of this invention. It is a figure which shows the operation part of the camera which concerns on embodiment of this invention.

  A camera according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram illustrating a system configuration of a camera according to an embodiment. The camera 2 includes a CPU 8. The CPU 8 includes a position / orientation information I / F 10, a sound input / output unit 18 including a microphone for acquiring sound and a speaker for outputting sound, and an LCD display unit 22 for displaying a through image, a map, and the like. A display control unit 24 that performs display control, a touch panel 26 that is configured by transparent electrodes and receives an input operation on a screen displayed on the LCD display unit 22, and a motor control that drives some lenses provided in the lens barrel unit 28. An image sensor 32 constituted by a CCD or CMOS that images a subject through a lens provided in the unit 30 and the lens barrel unit 28, and an A / D conversion (not shown) for an image signal output from the image sensor 32 The image processing unit 36 that performs image processing on the image data generated by performing A / D conversion by the unit, the information storage unit 40, Exif or the like in the folder A memory card 44 that stores image data in a fixed file format, a program memory 46, a communication method such as Bluetooth, Wi-Fi, 3G, and LTE (Long Term Evolution), and a web server via a network such as the Internet. A wireless communication unit 48 that transmits and receives information is connected.

  Here, the position and orientation information I / F 10 includes a GPS 12 that measures its own position based on a signal received from a GPS satellite, an orientation sensor 14 such as an electronic compass that measures the shooting orientation of the camera 2, and an elevation angle of the camera 2 with respect to a horizontal plane. A gravity sensor 16 for measuring is connected. The information storage unit 40 stores photographing constants such as position information measured by the GPS 12, azimuth information measured by the azimuth sensor 14, elevation angle measured by the gravity sensor 16, exposure value used for photographing, white balance value, and the like. The memory 46 uses a program for performing display and control on the LCD display unit 22, data and a program for calculating the position and locus of celestial bodies such as the sun and the moon, a look-up table (LUT) and evaluation photometry, which will be described later. Stores a program for calculating the shooting constants. In addition, GPS12 is good also as a structure which measures also about the altitude of a user's own position by 3D positioning. Here, when the measured altitude is used for calculation of the position and trajectory of a celestial body, which will be described later, the altitude considering the geoid height is used.

  When the power of the camera 2 is turned on by a power button (not shown), the CPU 8 starts imaging of the subject by the image sensor 32 and displays a through image on the LCD display unit 22.

  Next, for example, when an icon indicating selection of the astrophotography mode is displayed on the LCD display unit 22, when a predetermined operation such as a touch of the icon by the user using the touch panel 26 is performed, the CPU 8. Controls the display control unit 24 to display on the LCD display unit 22 a selection screen for selecting the type of celestial object to be imaged. When the type of the celestial body such as the sun or the moon is selected on this selection screen, the CPU 8 calculates the position and locus of the selected celestial body using the data stored in the program memory 46 and the calculation program.

  That is, the position and trajectory of the celestial body are stored in the program memory 46 with the shooting direction of the camera 2 measured by the direction sensor 14, the self-position measured by the GPS 12, and the elevation angle measured by the gravity sensor 16 as the observation point and observation direction. Calculate with a calculation program. Note that the calculation program uses a known function representing the trajectory of the celestial body. At this time, since the calculation of the position and locus of the celestial body is performed on the assumption that the camera 2 is horizontal with respect to the horizontal plane, the LCD display is used when the elevation angle measured by the gravity sensor 16 is significantly inclined with respect to the horizontal plane. A warning such as “Please hold the camera horizontally” may be displayed on the unit 22.

  When the position and trajectory of the celestial object are calculated, as shown in FIG. 2, the display control unit 24 superimposes and displays the celestial image 50 indicating the celestial object position at the present and a predetermined time after the present on the through image. Further, as shown in FIG. 2, the time 52 at which the celestial object is actually located may be displayed at the place where the celestial image 50 is displayed. In addition, in FIG. 2, the example whose celestial body is the sun is shown.

  Next, when any one of the celestial images 50 superimposed on the through image is selected by the user using the touch panel 26, the remaining time 54 until the celestial object reaches the selected position is displayed. Sets the shooting constant at the selected position. The shooting constant is set by referring to the LUT, for example. In the LUT, white balance values are set as shooting constants when the celestial body is the sun. . Further, an exposure amount that takes the age of the moon into account is set as a shooting constant when the celestial body is the moon.

  Further, in the setting of the photographing constant, a photometric result obtained by evaluation photometry considering the influence of a shield such as a mountain or a building existing in the through image is also taken into consideration. Here, in the evaluation photometry, a portion with a small amount of light is determined as a shielding object by multi-division photometry using the image sensor 32 or a photometry unit (not shown). Then, calculation is performed using a program stored in the program memory 46 based on the size of the shielding object, and a correction value for the exposure amount of the photographing constant is determined. Here, the program memory 46 stores a plurality of evaluation photometry programs. That is, it is possible to select the photo performance such as whether the shielding object is clearly photographed or the silhouette is photographed according to the user's preference, and the display control unit 24 displays a selection menu for selecting the photo performance. Display above.

  At this time, the display control unit 24 displays a preview image on the LCD display unit 22 when shooting is performed using shooting constants set according to the performance of the selected photo.

  The information storage unit 40 stores the time when the composition is selected using the touch panel 26 and the shooting constants in the composition. Thereby, the camera 2 can be fixed to a tripod or the like, and timer shooting can be performed at a time when a desired composition is obtained.

  In addition, when there is time until a desired composition time is reached, the user may leave the point where the desired composition and the shooting constant are set, or may shoot another subject. Therefore, the user's own position measured by the GPS 12, the shooting direction measured by the direction sensor 14, and the elevation angle measured by the gravity sensor 16 may be stored together with the time when the desired composition is obtained and the shooting constant.

  In this case, when the time at which the desired composition is reached, the self position measured by the GPS 12, the shooting direction measured by the azimuth sensor 14, the elevation angle measured by the gravity sensor 16, the self position stored in the information storage unit 40, It is confirmed whether or not the shooting direction and elevation angle coincide with each other. If they match, the CPU 8 sets the shooting constant stored in the information storage unit 40 again. As a result, the user can take an image with a desired composition.

  If they do not match, what direction should the shooting position be shifted on the live view, what direction should the shooting orientation be changed, how much the camera angle should be tilted, etc. It may be displayed in a superimposed manner.

  Further, as shown in FIG. 3, it may be configured to adjust the shooting constant set by the LUT and the evaluation photometry. The trajectory and position of the celestial object are calculated, and a bar 56 indicating the imaging constant set using the LUT and the evaluation photometry is superimposed and displayed on the through image. When the user moves the pointer 59 displayed on the bar 56 using the touch panel 26, the exposure value and the white balance value can be adjusted. In addition, when the exposure value and the white balance value are adjusted, the preview display on the LCD display unit 22 is changed to an image obtained by shooting using the changed exposure value and white balance value. FIG. 3 shows an example in which the exposure value can be changed by the bar 56 displayed in the vertical direction, and the white balance value can be changed by the bar 56 displayed in the horizontal direction.

  According to the camera according to the present embodiment, it is possible to prepare in advance to prevent a failure in photographing with a desired layout of an image including a natural situation.

  Further, by using the evaluation photometry for setting the photographing constant, a photographed image desired by the user can be obtained even when the shielding object and the celestial body overlap.

  The camera according to the present embodiment calculates the position and trajectory of the celestial body using the self position measured by the GPS 12, the shooting direction measured by the direction sensor 14, and the elevation angle measured by the gravity sensor 16. Therefore, when the altitude is different, the sunrise, sunset time and actual sunrise, sunset time provided by the National Astronomical Observatory, etc. may be slightly different, but the user's position is compared to using the provided sunrise and sunset time. The time of sunrise or sunset can be obtained with higher accuracy, and the user can take a picture with a desired composition.

  In addition, it is possible to shoot without failing phenomena that occur under special conditions such as atmospheric optical phenomena such as Diamond Fuji, astronomical phenomena such as solar eclipse and lunar eclipse. In this case, the user may be notified in conjunction with the calendar function or the GPS function. When linked with the calendar function, a message such as “You can observe the lunar eclipse around 20:00 today” is displayed on the live view. In addition, the phenomenon that occurs under special conditions cannot be observed at the user's own position measured by GPS12, but if it can be observed by moving a predetermined distance, it can be observed if it moves 30 km to the east. You may perform the display which shows a direction and a moving distance. Further, when photographing a phenomenon occurring under special conditions at a user's desired point, the user's own position measured by the GPS 12, the photographing orientation measured by the orientation sensor 14, and the elevation angle measured by the gravity sensor 16 May be registered, and the date and time at which the phenomenon occurring under special conditions at the point can be photographed may be notified. It should be noted that the date and time at which a phenomenon occurring under special conditions can be photographed may be calculated by performing calculations using data stored in the program memory 46, or a network such as the Internet using the wireless communication unit 48. Via a web server or the like.

  Further, when a mountain displayed in the through image is specified using the touch panel 26, a place where a phenomenon that occurs in a special condition for the mountain can be photographed may be displayed on the map. Further, the recommended shooting spot of the mountain may be acquired from a web server or the like via a network such as the Internet using the wireless communication unit 48 and displayed on a map.

  In the above-described embodiment, the configuration using the touch panel 26 as the operation unit has been described as an example. However, as illustrated in FIG. 5, a cross key 58 may be used as the operation unit. In this case, as shown in FIG. 4, a cursor 60 is displayed on the through image, and the display control unit 24 moves the cursor 60 in accordance with an operation instruction on the cross key 58, so that the user has a desired composition. The position of the celestial body can be specified.

  In the above-described embodiment, the sun and the moon have been described as examples of celestial bodies. However, the present invention is not limited to the sun, and may be a planet such as Venus, a star, or a comet.

  Further, in the above-described embodiment, by having a plurality of photometric evaluation programs, it is possible to select the photo workmanship such as whether to capture the shielding object clearly according to the user's preference or as a silhouette. However, it may be configured to perform auto bracket shooting.

  In the above-described embodiment, the configuration has been described in which the camera 2 includes the GPS 12. However, when the camera 2 does not include the GPS 12, an external GPS may be used.

  In the above-described embodiment, the camera 2 is described as including the gravity sensor 16, but it is determined whether the camera 2 is horizontal, that is, whether the camera 2 is perpendicular to the direction of gravity. A horizontal determination unit may be used. In this case, when the camera 2 is not horizontal, a warning such as “Please hold the camera horizontal” is displayed on the LCD display unit 22.

  Moreover, although the gravity sensor 16 demonstrated as a structure which measures an elevation angle in the above-mentioned embodiment, it is good also as a structure which can also measure a depression angle with the gravity sensor 16. FIG. By measuring the depression angle, for example, when shooting sunset or sunrise from the top of the mountain, the shooting constant can be set.

  In the above-described embodiment, the user selects one of the celestial images 50 to be superimposed and displayed on the through image based on the position and locus of the celestial object calculated using the arithmetic program using the touch panel 26. Although the configuration has been described as an example, if the desired composition is not obtained at the position of the celestial object indicated by the celestial object image 50, the user can move the shooting location. For example, when a place where the celestial body is to be located is specified on the shooting screen using the touch panel 26, the position where the object can be shot with a desired composition and the time required for moving the shooting place may be calculated and displayed.

  When it is desired to photograph a desired composition without moving the photographing location, the position of the celestial body in the desired composition is designated using the touch panel 26, so that the desired composition can be obtained at what time of the month what day. May be displayed to the effect that shooting is possible.

DESCRIPTION OF SYMBOLS 2 ... Camera, 8 ... CPU, 12 ... GPS, 14 ... Direction sensor, 16 ... Gravity sensor, 22 ... LCD display part, 24 ... Display control part, 26 ... Touch panel, 32 ... Image sensor, 40 ... Information storage part, 46 ... Program memory

Claims (5)

A shooting section for shooting the subject;
A display unit for displaying a through image based on a photographing signal from the photographing unit;
A self-position measuring unit for measuring the self-position;
An azimuth measuring unit for measuring a shooting direction by the photographing unit;
A storage unit for storing information for calculating the position and trajectory of the celestial body;
A celestial body position calculation unit that calculates the position and locus of the celestial body using the self-position, the shooting direction, and the information;
A display control unit that superimposes and displays the position and locus of the celestial object calculated by the celestial object position calculation unit on the through image;
An operation unit for designating a predetermined location on the display unit;
A camera comprising: a setting unit that sets an imaging constant based on the position of the celestial body designated by the operation unit.   The camera according to claim 1, wherein the display control unit displays a remaining time until the celestial body is located at the predetermined location.   The camera according to claim 1, wherein the operation unit includes an operation key or a touch panel.   The camera according to claim 1, wherein the setting unit sets the shooting constant based on a spectrum of sunlight. It has a designation part that designates the workmanship of the photo,
The camera according to any one of claims 1 to 4, wherein the setting unit sets the shooting constant according to the performance specified by the specifying unit.

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