JP6702100B2 - Information processing apparatus, information processing method, and program - Google Patents

Description

  The present invention relates to an information processing device, an information processing method, and a program.

  2. Description of the Related Art Conventionally, an imaging device has been proposed in which a user wears the imaging device on his/her head and images an object in front of his/her line of sight (for example, refer to Patent Document 1). Such an image pickup apparatus is not supposed to take an image in a stable posture, and it is considered to automatically take an image at a timing when the posture is stable.

JP, 2009-267792, A

  However, when the above-described image pickup method is adopted, image pickup is not performed while the posture of the image pickup apparatus is not stable, so that it cannot be applied to an image pickup method that requires periodic image pickup. There's a problem.

  The present invention has been made in view of such problems, and an object thereof is to enable periodic imaging even when the posture is not stable.

In order to achieve the above object, the information processing apparatus according to the present invention is
Acceleration detecting means for sequentially detecting a change in acceleration in each direction of a three-dimensional space including gravitational acceleration;
Determination means for determining whether or not the acceleration in each direction is stable from the magnitude of the change in the acceleration in each direction detected by the acceleration detection means,
From the magnitude of change in the acceleration in each direction detected by the acceleration detecting means,-out based on the gravitational acceleration included in the information about the attitude information acquisition device, it determines the horizontal and vertical Direction is the direction during imaging Direction determining means to
Holding means for holding the determination result of the direction determining means,
If it is determined that the determination means is stable, and the determination result by the direction determination means is the same as the previous determination result held in the holding means for a predetermined time , the held previous determination result is If the determination result is updated by updating to the determination result of this time and the determination result is not stable, the previous determination result held in the holding unit is not updated. , Control means for controlling to apply the previous determination result ,
An information acquisition means for acquiring information by the imaging unit,
Acquisition control means for controlling to acquire the determination result held in the holding means when the information is acquired by the information acquisition means,
It is characterized by including.

  According to the present invention, periodical imaging can be performed even when the posture is not stable.

It is a figure which shows the structure of the imaging device which concerns on the 1st Embodiment of this invention. 6 is a flowchart showing an operation of an image pickup process in the image pickup apparatus according to the same embodiment. 7 is a flowchart showing an operation of a direction determination process during image capturing in the image capturing apparatus according to the same embodiment. It is a figure which shows an example of the transition of the acceleration which arises in the imaging device which concerns on the same embodiment. It is a figure which shows an example of the transition of the acceleration which arises in the imaging device which concerns on the same embodiment. 8 is a flowchart showing an operation of a reproduction process in the image pickup apparatus according to the second embodiment of the present invention.

(First embodiment)
Hereinafter, the image pickup apparatus as the information processing apparatus according to the first embodiment of the present invention will be described. As shown in FIG. 1, the image pickup apparatus 100 according to the first embodiment of the present invention includes a control unit 102, a memory 104, an operation unit 106, an acceleration sensor 110, a lens optical system 111, an image pickup element 112, and an analog/digital unit. It is configured to include an (A/D: Analogue/digital) conversion unit 113, an image processing unit 114, an auto focus (AF: Auto Focus) control unit 115, a lens drive unit 116, and a display unit 120. The imaging device 100 is mounted on, for example, the head of a user and images the front of the user.

  The control unit 102 includes a CPU (Central Processing Unit), executes software processing according to a program stored in the memory 104, and is a function included in the imaging apparatus 100. The imaging control unit 122, the image acquisition unit 124, and the posture. The determination unit 126 and the like are realized.

  The imaging control unit 122 in the control unit 102 controls imaging according to the user's operation of the operation unit 106 and the like, and instructs the AF control unit 115 to perform imaging control such as focusing control and zoom control. . The image acquisition unit 124 acquires a frame that is image data input from the image processing unit 114. The attitude determination unit 126 determines the direction of the image capturing apparatus 100 at the time of image capturing based on the acceleration generated in the image capturing apparatus 100 from the acceleration sensor 110. The processing at the time of image capturing by the control unit 102 will be described later.

  The memory 104 is composed of a non-volatile memory and a volatile memory. The non-volatile memory stores various information (programs and the like) used for control and the like in the image pickup apparatus 100, a determination result of an image pickup time direction described later, and the like. On the other hand, the volatile memory serves as a work area, for example.

  The operation unit 106 is an interface used to input the operation content of the user. The operation unit 106 includes keys operated by the user, for example.

  The acceleration sensor 110 sequentially detects the acceleration generated as the imaging device 100 moves. For example, the acceleration sensor 110 detects acceleration in each direction of the X axis, the Y axis, and the Z axis in the three-dimensional space. The acceleration sensor 110 outputs the detected acceleration data to the control unit 102. The acceleration data is stored in the memory 104. The direction indicated by the X-axis in this three-dimensional space is the horizontal direction (or the left-right direction) orthogonal to the optical axis direction of the lens optical system 111 in the imaging device 100. Further, the direction indicated by the Y axis indicates the vertical direction (or the vertical direction) orthogonal to the optical axis direction of the lens optical system 111 in the image pickup apparatus 100. Furthermore, the direction indicated by the Z-axis indicates the optical axis direction (or front-back direction) of the lens optical system 111 in the image pickup apparatus 100.

  The AF control unit 115 controls the lens driving unit 116 according to an instruction of image pickup control such as focusing control and zoom control by the image pickup control unit 122 and the image processing unit 114 in the control unit 102. The lens driving unit 116 has a built-in motor for moving the lens optical system 111. The lens drive unit 116 moves the lens optical system 111 for focusing control, zoom control, and the like according to the control of the AF control unit 115.

  The lens optical system 111 is composed of a zoom lens or the like. The lens optical system 111 moves under the control of the lens driving unit 116. By moving the lens optical system 111, the angle of view and the optical image at the time of imaging are controlled.

  The image pickup element 112 is composed of a plurality of light receiving elements regularly arranged two-dimensionally on the light receiving surface, a sample hold circuit, and the like. The light receiving element is an imaging device such as a photodiode, a Bayer array color filter, a CCD (Charge Coupled Device), or a CMOS (Complementary Metal Oxide Semiconductor). The image pickup device 112 picks up (receives) an optical image that has entered through the lens optical system 111, and outputs an analog image signal to the A/D conversion unit 113.

  The A/D converter 113 converts the analog image signal from the image sensor 112 into digital data and outputs it.

  The image processing unit 114 includes a color process circuit, a JPEG (Joint Photographic Experts Group) circuit, a digital video encoder, and the like. The image processing unit 114 inputs the digital data from the A/D conversion unit 113 and generates a frame which is image data. The image processing unit 114 outputs the generated frame to the image acquisition unit 124 in the control unit 102. Further, the image processing unit 114 analyzes the generated frame to determine whether or not focus control is necessary, and if necessary, instructs the AF control unit 115 to perform focus control.

  The display unit 120 is composed of, for example, an LCD (Liquid Crystal Display), a PDP (Plasma Display Panel), an EL (Electro-Luminescence) display, or the like, and displays an image corresponding to a frame.

  Next, the details of the imaging process performed by the imaging device 100 will be described. FIG. 2 is a flowchart showing the operation of the image pickup process.

  When the power of the image pickup apparatus 100 is turned on and activated (step S100). The posture determination unit 126 in the control unit 102 reads the determination result of the image capturing direction stored in advance in the nonvolatile memory of the memory 104 and sets it as the initial value of the image capturing direction determination result (step S101). Here, the determination result of the image capturing direction stored in the memory 104 is retained among the image capturing direction of the image capturing apparatus 100 determined in the past image capturing direction determining process (the process of step S102 described later). Is the latest imaging direction determined.

  Next, the posture determination unit 126 performs the determination process of the image capturing direction (step S102). FIG. 3 is a flowchart showing the operation of the image pickup direction determination process in the image pickup apparatus 100.

  The posture determination unit 126 determines whether or not the acceleration sequentially input from the acceleration sensor 110 is stable (step S201).

  4 and 5 are diagrams showing an example of transition of acceleration occurring in the image pickup apparatus 100. As described above, the acceleration sensor 110 detects the acceleration in each direction of the X axis, the Y axis, and the Z axis in the three-dimensional space. In FIG. 4, the accelerations in the X-axis direction and the Z-axis direction are small in the vicinity of 0 [G], and the accelerations in the Y-axis direction are small in the vicinity of 1 [G] and are stable. The acceleration in the Y-axis direction is around 1 [G] because gravitational acceleration occurs in the Y-axis direction. On the other hand, in FIG. 5, the acceleration changes greatly in any of the X-axis, Y-axis, and Z-axis directions and is not stable, and the direction of gravitational acceleration cannot be determined. In step S201, the posture determination unit 126 determines that the acceleration is stable when the change in the acceleration within a predetermined time (for example, 100 [ms]) is within the predetermined range, and when the change exceeds the predetermined range. Determines that the acceleration is not stable.

  When the acceleration is not stable (step S201; NO), the posture determination unit 126 determines that the image capturing direction is indefinite (determination NG) (step S202) and is stored in the nonvolatile memory in the memory 104. The determination result of the image capturing direction is not updated (step S203).

  On the other hand, when the acceleration is stable (step S201; YES), the posture determination unit 126 then determines, based on the acceleration, the image capturing direction of the image capturing apparatus 100, specifically, the lens optical system 111. The direction in which it is located is determined (step S204).

  Specifically, the posture determination unit 126 determines the direction of gravitational acceleration based on the change in acceleration from the acceleration sensor 110. Next, the posture determination unit 126 determines that the direction of the gravitational acceleration is the vertical direction and the direction orthogonal to the direction of the gravitational acceleration is the horizontal direction. Further, the posture determination unit 126 obtains the vertical direction (Y axis direction) of the lens optical system 111 based on the vertical acceleration, and determines the horizontal direction (X axis direction) of the horizontal acceleration. Based on. At this time, the posture determination unit 126 determines that the lens optical system 111 is oriented in four directions (0° (upright), 90° (rotated 90° right) in each of the vertical direction and the horizontal direction. ), 180° (rotated 180°), 270° (rotated 90° left)), and the image capturing direction is obtained.

  Next, the posture determination unit 126 determines whether the determination result of the image capturing direction determined in step S204 is the same result as the previous image capturing direction (step S205). Specifically, the posture determination unit 126 compares the initial value of the image capturing direction determination result with the image capturing direction determination result determined in step S204 to determine whether they are the same.

  When the determination result of the image capturing direction determined in step S204 is the same result as the previous image capturing direction (step S205; YES), the posture determination unit 126 determines that the same result is n times (for example, 20 [ms]). It is determined whether or not the cycle continues five times or more (step S206). For example, the memory 104 is provided with a counter that increments by 1 each time the determination result in the image capturing direction determined in step S204 is the same as the previous image capturing direction. At step S205, the posture determination unit 126 increments the counter by 1 each time the determination result of the image capturing direction determined at step S204 is the same result as the previous image capturing direction, and determines that the result is not the same. If it does, the counter is reset. Further, the posture determination unit 126 determines in step S206 whether or not the value of the counter is n or more.

  When the same result continues n times or more (step S206; YES), the posture determination unit 126 determines that the image capturing direction has been determined (determination OK) (step S207), and the nonvolatile state in the memory 104 is determined. The determination result of the imaging direction stored in the property memory is updated to the determination result of the imaging direction determined in step S204 (that is, applied as the determination result of this time) (step S208).

  On the other hand, when the same result has not continued for n times or more (step S206; NO), the posture determination unit 126 determines that the image capturing direction is being determined (determination NG) (step S209), and the memory 104 is stored. The determination result of the imaging direction stored in the non-volatile memory is not updated (step S210).

  Further, when the determination result of the image capturing direction determined in step S204 is not the same result as the previous image capturing direction (step S205; NO), the posture determination unit 126 sets the initial value of the image capturing direction determination result to step S204. It is updated to the determination result of the imaging time direction determined by (step S211).

  Next, the posture determination unit 126 determines that the image capturing direction is being determined (determination NG) (step S212), and does not update the image capturing direction determination result stored in the non-volatile memory in the memory 104. (Step S213).

  Returning to FIG. 2 again, description will be made. After the imaging time direction determination process in step S102, the imaging control unit 122 in the control unit 102 determines whether or not the user has operated the operation unit 106 to make a request for imaging (step S103).

  When the image capturing request is not made (step S103; NO), the image capturing direction determination process in step S102 is repeated. On the other hand, when an image capturing request is made (step S103; YES), the image acquiring unit 124 determines the image capturing direction stored in the non-volatile memory of the memory 104 for determining the attitude of the image capturing apparatus 100. Is acquired, and this imaging direction is adopted (step S104). Further, the image acquisition unit 124 performs an image capturing process using the acquired determination result of the image capturing direction (step S105). Specifically, the image acquisition unit 124 stores the acquired determination result of the image capturing direction and the frame in the memory 104 in association with each other. When the frame is reproduced, the blurring correction or the like of the frame is performed using the determination result of the associated image capturing direction.

  After that, the control unit 102 determines whether or not the user has operated the operation unit 106 to turn off the power of the imaging device 100 (step S106). When the power-off is requested (step S106; YES), the power of the image pickup apparatus 100 is turned off (step S107), and the series of operations ends. On the other hand, when the power-off is not requested (step S106; NO), the imaging direction determination process in step S102 is repeated.

  As described above, in the imaging device 100 according to the first embodiment, when the acceleration generated in the imaging device 100 is stable and the determination result of the imaging time direction based on the acceleration continues with the same result, , The determination result of the direction at the time of image capturing is updated to the latest one, and is used for frame blur correction and the like during reproduction. On the other hand, when the acceleration generated in the image capturing apparatus 100 is not stable or when the determination result in the image capturing time direction based on the acceleration does not continue with the same result, the image capturing time direction determination result is not updated, and the previous image capturing time The direction determination result is held and used for frame blur correction and the like during reproduction.

  Accordingly, even when images are taken periodically while the posture of the image pickup apparatus 100 is not stable, it is possible to perform the shake correction of the frame at the time of reproduction using the determination result of the past image pickup direction.

(Second embodiment)
In the first embodiment, the image pickup direction determination result is stored in the memory 104 in association with the frame at the time of image pickup, but the image pickup direction determination result may be made at the time of reproduction. .

  FIG. 6 is a flowchart showing the operation of the reproduction process in this case. The reproduction process is performed by the imaging device 100 according to the first embodiment, but the circuit unit that functions in the second embodiment includes a control unit 102, a memory 104, an operation unit 106, and a display unit 120. The image acquisition unit 124 and the posture determination unit 126. In addition, in the nonvolatile memory of the memory 104, various types of information (programs and the like) used for control and the like in the image capturing apparatus 100, the determination result of the image capturing direction, and recorded still image files and moving image files are recorded. Further, it is assumed that the moving image file stores the image capturing direction of the image capturing apparatus 100 measured by the acceleration sensor 110 at the time of recording and before the image capturing direction determination process is applied, together with the recording elapsed time.

  When the power of the image pickup apparatus 100 is turned on and the operation unit 106 detects a predetermined operation, the operation mode shifts to the reproduction mode, and the control unit 102 reads the moving image file to be reproduced recorded in the memory 104 (step S300). ). Next, the control unit 102 reads the image capturing time direction data recorded as the metadata of the moving image file (step S301).

  Then, the control unit 102 waits until it detects a reproduction start instruction from the operation unit 106 (step S302). When the reproduction instruction is not detected (step S303; NO), the control unit 102 continues the standby in step S302, but when the reproduction instruction is detected (step S303; YES), the photographing direction determination process is executed at this point. (Step S304).

  This photographing direction determination process is performed in the same manner as step S102 and FIG. 3 of the first embodiment. However, in the first embodiment, the posture determination unit 126 determines whether or not the acceleration sequentially input from the acceleration sensor 110 is stable. However, in the second embodiment, the posture determination unit 126 does not Based on the acceleration information recorded in the moving image file to be played back, it is determined whether or not the moving image is recorded in a stable state by the image pickup apparatus 100 at the time of image pickup.

  The flowchart of FIG. 3 is also applied to the second embodiment, but in this flowchart, the posture determination unit 126 receives X-axis, Y-axis, and Z-axis sequentially input from the acceleration sensor 110 and recorded together with a moving image. By using the acceleration information composed of the acceleration of 1 in the determination process, the determination process of the imaging direction is performed in the process of the reproduction process.

  Then, when the imaging direction determination process in step S304 ends, the control unit 102 reflects the determination result in the reproduction target frame and performs the moving image reproduction process (step S305). After that, the control unit 102 determines whether or not the reproduction process is completed (step S306). When the end of the reproduction process is detected (step S306; YES), this process ends. On the other hand, when the end of the reproduction process is not requested (step S306; NO), the reproduction process in step S305 is continued.

  Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the specific embodiment, and the present invention includes the invention described in the claims and an equivalent range thereof. Be done. The inventions described in the initial claims of the present application will be additionally described below.

(Appendix 1)
Attitude information acquisition means for acquiring information about the attitude of each information acquisition device at the time of acquiring a plurality of information,
According to the content of the information about the posture acquired by the posture information acquisition unit, as the information about the posture at the time of acquiring the information, a control unit that controls to apply the information acquired at a time other than the time of acquiring the information,
An information processing apparatus comprising:

(Appendix 2)
The information on the posture is obtained continuously in time,
The content of the information regarding the posture includes a change in the information regarding the posture acquired continuously in time,
The control unit controls to apply the information acquired except when the information is acquired, according to whether or not the change in the information on the posture satisfies a predetermined condition. Information processing device.

(Appendix 3)
The information processing apparatus according to appendix 2, wherein the predetermined condition is that the degree of change in the information regarding the posture is within a predetermined range.

(Appendix 4)
Further comprising holding means for holding information regarding the posture when the information acquisition device is stable,
When the control unit determines that the change in the information regarding the posture does not satisfy a predetermined condition, the control unit applies the information regarding the posture held by the holding unit as the information acquired at a time other than the time when the information is acquired. The information processing apparatus according to appendix 2, wherein:

(Appendix 5)
The attitude information acquiring means further includes an acquiring means for acquiring the plurality of information, and the attitude information acquiring means includes a detecting means for detecting information about the attitude of each of the information acquiring devices at the time of acquiring the plurality of information by the acquiring means. The information processing apparatus according to appendix 4, characterized in that.

(Appendix 6)
The information processing apparatus according to appendix 5, wherein the acquisition unit includes an imaging unit.

(Appendix 7)
7. The information processing apparatus according to appendix 6, wherein the image capturing unit captures an image at a predetermined cycle.

(Appendix 8)
8. The information processing apparatus according to appendix 7, wherein the holding unit holds information regarding the posture in association with an image captured by the image capturing unit in a predetermined cycle.

(Appendix 9)
An attitude information acquisition step of acquiring information about the attitude of each information acquisition device at the time of acquiring a plurality of information;
Depending on the content of the information regarding the posture acquired in the posture information acquisition step, as the information regarding the posture at the time of acquiring the information, a control step of controlling to apply the information obtained at a time other than the time of acquiring the information,
An information processing method comprising:

(Appendix 10)
The information regarding the posture is obtained continuously in time,
The content of the information on the posture includes a change in the information on the posture acquired continuously in time,
The control step is controlled to apply information acquired at a time other than when the information is acquired, according to whether or not a change in the information on the posture satisfies a predetermined condition. Information processing method.

(Appendix 11)
11. The information processing method according to appendix 10, wherein the predetermined condition is that the degree of change in information regarding the posture is within a predetermined range.

(Appendix 12)
Further comprising a holding step of holding information regarding the posture when the information acquisition device is stable,
When it is determined that the change in the information on the posture does not satisfy a predetermined condition, the control step applies the information on the posture held in the holding step as the information acquired except when the information is acquired. 11. The information processing method according to appendix 10, characterized by controlling.

(Appendix 13)
The method further includes an acquisition step of acquiring the plurality of pieces of information, and the attitude information acquisition step includes a detection step of detecting information regarding the attitude of each of the information acquisition devices at the time of acquisition of the plurality of information in the acquisition step. 13. The information processing method according to appendix 12, which is characterized in that

(Appendix 14)
Computer,
Attitude information acquisition means for acquiring information about the attitude of each information acquisition device at the time of acquiring a plurality of information,
According to the content of the information about the attitude acquired by the attitude information acquisition unit, as the information about the attitude at the time of acquiring the information, a control unit that controls to apply the information acquired at a time other than the time of acquiring the information,
A program characterized by making it function as.

(Appendix 15)
The information regarding the posture is obtained continuously in time,
The content of the information on the posture includes a change in the information on the posture acquired continuously in time,
15. The control unit controls to apply the information acquired except when the information is acquired, according to whether or not the change in the information on the posture satisfies a predetermined condition. program.

(Appendix 16)
16. The program according to appendix 15, wherein the predetermined condition is that the degree of change in the information regarding the posture is within a predetermined range.

(Appendix 17)
The information acquisition device further functions as a holding unit that holds information about the posture when the device is stable,
When the control unit determines that the change in the information regarding the posture does not satisfy a predetermined condition, the control unit applies the information regarding the posture held by the holding unit as the information acquired at a time other than the time when the information is acquired. 16. The program according to appendix 15, characterized by:

(Appendix 18)
While further functioning as an acquisition unit that acquires the plurality of information, the posture information acquisition unit serves as a detection unit that detects information regarding the posture of each of the information acquisition devices when the plurality of information is acquired by the acquisition unit. 18. The program according to appendix 17, which further functions.

100... Imaging device, 102... Control part, 104... Memory, 106... Operation part, 110... Acceleration sensor, 111... Lens optical system, 112... Imaging element, 113... Analog/digital conversion part, 114... Image processing part, 115 ... auto-focus control section, 116... lens drive section, 120... display section, 122... imaging control section, 124... image acquisition section, 126... posture determination section

Claims (7)

Acceleration detecting means for sequentially detecting a change in acceleration in each direction of a three-dimensional space including gravitational acceleration;
From the magnitude of the change in acceleration in each direction detected by the acceleration detection means, a determination means for determining whether or not the acceleration in each direction is stable,
From the magnitude of change in the acceleration in each direction detected by the acceleration detecting means,-out based on the gravitational acceleration included in the information about the attitude information acquisition device, it determines the horizontal and vertical Direction is the direction during imaging Direction determining means to
Holding means for holding the determination result of the direction determining means,
When it is determined that the determination means is stable and the determination result by the direction determination means is the same as the previous determination result held in the holding means for a predetermined time , the held previous determination result is If the determination result is updated to the current determination result and the determination result is not stable, the previous determination result held in the holding unit is not updated. , Control means for controlling to apply the previous determination result ,
An information acquisition means for acquiring information by the imaging unit,
Acquisition control means for controlling to acquire the determination result held in the holding means when the information is acquired by the information acquisition means,
An information processing apparatus comprising: The information processing according to claim 1 , further comprising a storage control unit that stores the information acquired by the information acquisition unit and the determination result acquired by the acquisition control unit in a storage unit in association with each other. apparatus. The determining means determines that the acceleration in each direction is not stable when the direction of the gravitational acceleration cannot be determined due to a change in acceleration in each direction detected by the acceleration detecting means. The information processing device according to claim 1 or 2 . The determination means determines that the acceleration in each direction is not stable when the change in the acceleration in each direction detected by the acceleration detection means exceeds a predetermined range. 4. The information processing device according to any one of 3 to 3 . When the determination result by the direction determining means is the same as the previous determination result held in the holding means, further comprising a counting means for counting the number of times determined to be the same,
Said control means, based on the number of times counted by the determination result by said counting means, any one of claims 1 to 4, characterized in that to control the updating of the previous determination result held in said holding means The information processing device according to item 1. An information processing method executed by an information processing device including an acceleration detection unit that detects a change in acceleration in each direction of a three-dimensional space including gravitational acceleration,
An acceleration detection step of sequentially detecting acceleration by the acceleration detection unit;
From the magnitude of the change in acceleration in each direction detected in the acceleration detection step, a determination step of determining whether or not the acceleration in each direction is stable,
From the magnitude of variation of said acceleration detecting acceleration in each direction detected in step-out based on the gravitational acceleration included in the information about the attitude information acquisition device, the horizontal and vertical Direction is the direction during imaging A direction determining step for determining,
A holding step of holding the determination result of the direction determination step in a holding part,
If the determination result of the direction determination step is stable in the determination step and the determination result of the direction determination step is the same as the previous determination result held in the holding step for a predetermined time , the previous determination held Update the result to this time's judgment result, apply this time's judgment result, and if it is judged in the judgment step that it is not stable, do not update the held previous judgment result. , A control step of controlling to apply the previous determination result ,
An information acquisition step of acquiring information by the imaging unit,
An acquisition control step of controlling to acquire the determination result held by the holding step when the information is acquired by the information acquisition step,
An information processing method comprising: A computer provided with an information processing apparatus including an acceleration detection unit that detects a change in acceleration in each direction of a three-dimensional space including gravitational acceleration,
Acceleration detecting means for sequentially detecting acceleration by the acceleration detecting section;
Determination means for determining whether or not the acceleration in each direction is stable from the magnitude of the change in acceleration in each direction detected by the acceleration detection means,
From the magnitude of change in the acceleration in each direction detected by the acceleration detecting means,-out based on the gravitational acceleration included in the information about the attitude information acquisition device, it determines the horizontal and vertical Direction is the direction during imaging Direction determining means,
Holding means for holding the determination result by the direction determining means in a holding portion,
If the determination result of the determination unit is stable and the determination result of the direction determination unit is the same as the previous determination result held by the holding unit for a predetermined time , the previous determination result held To the determination result of this time, the determination result of this time is applied, and when it is determined that the determination means is not stable, the previous determination result held is not updated, Control means for controlling to apply the previous judgment result ,
Information acquisition means for acquiring information by the imaging unit,
Acquisition control means for controlling to acquire the determination result held in the holding means at the time of information acquisition by the information acquisition means,
A program characterized by making it function as.

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