JP2014192746A - Information processing apparatus, display method in information processing apparatus and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and accurately correct imaging time data of image files imaged by a plurality of imaging devices.SOLUTION: An information processing apparatus comprises: a frequency calculation unit which calculates frequencies of image files whose imaging times are included within a prescribed time range on the basis of imaging time data; a correction value calculation unit which compares the frequencies of the image files calculated by the frequency calculation unit for each imaging device and calculates the correction value of the imaging time data of an image file imaged by another imaging device with respect to the imaging time data of an image file imaged by one imaging device so that the frequencies match each other; and a display control unit which generates a screen display signal for displaying a display screen displaying a plurality of image files according to the transition of time by correcting the imaging time data with the correction value calculated by the correction value calculation unit.

Description

  The present invention relates to an information processing apparatus that displays an image file including imaging time data, a display method in the information processing apparatus, and a program.

  When an imaging device typified by a digital camera generates an image file including image data as a result of imaging a subject, various attached data at the time of imaging are often stored in the image file. As a standard for storing such attached data in an image file, a standard called Exif (Exchangeable Image Format) is known (see Non-Patent Document 1). According to the Exif standard, image data is captured by an imaging device. The attached data including the imaging date / time data is stored in the header portion of the Exif file.

  When the imaging device stores imaging date / time data in an image file, the imaging date / time data is often given based on an internal clock of the imaging device. When the imaging device is equipped with a GPS (Global Positioning System) module, the internal clock may be corrected based on time information supplied from the satellite of the GPS system, but the imaging device not equipped with the GPS module In this case, after setting the internal clock in the initial setting of the imaging apparatus, the user cannot be expected to actively adjust the time. An internal clock of a general image pickup device generates an error of about several tens of seconds per month, and this error also varies depending on the image pickup device. It is difficult to guarantee that the imaging date and time data stored in is exactly the same.

  As a phenomenon based on the occurrence of a shift of the internal clock in a plurality of imaging devices, the following may be mentioned. In some cases, the same subject is imaged simultaneously by a plurality of imaging devices, such as a wedding reception, and the image files captured by these imaging devices are brought together for viewing at a later date. In such viewing, a so-called slide show, a plurality of image files are arranged in order of imaging date / time data, and each image file is displayed in order of imaging date / time data for a predetermined time (for example, several seconds). May be displayed. Here, when the internal clock is shifted in a plurality of imaging devices, the slide show images are displayed in the order in which the actual events occur in detail, even though the same event is captured by the plurality of imaging devices almost simultaneously. The file may not be displayed.

  In view of such a phenomenon, there has been proposed a technique capable of displaying an image corresponding to a shift in imaging date / time data of image files captured by a plurality of imaging devices. As an example, a technique of extracting an image file having a high degree of similarity from among image files captured by a plurality of imaging devices and correcting the imaging date / time data of the other image file based on the imaging date / time data of one image file (patent) Reference 1), a technique of displaying a list of image files captured by a plurality of imaging devices in the order of imaging date and time, and correcting the image files that can be determined to be inaccurate by moving them manually on the screen (Patent Document) 2), and further, a reference photographic image obtained by imaging the same subject is extracted, and a reference photographic image captured by another imaging device in accordance with imaging date / time data of the reference photographic image captured by any of the imaging devices is extracted. There is a technique for correcting imaging date / time data (see Patent Document 3).

JP 2011-9976 A JP 2009-267600 A JP 2009-88677 A

“What is Exif Print [What is Exif?]” [Search February 25, 2013], Internet <URL: http: //www.cipa.jp/exifprint/contents_j/01exif1_j.html>

  However, any of the above-described conventional techniques requires time and effort to correct the imaging date / time data, or the imaging date / time data may not be corrected accurately.

  For example, in the techniques described in Patent Document 1 and Patent Document 3, image files that are estimated to have captured the same subject by calculating the similarity of the image files are considered to have been captured almost simultaneously, and the imaging date / time data Was corrected. However, even when the same subject is captured by a plurality of imaging devices, the same subject is not always captured simultaneously. In addition, there are cases where it can be considered that images are captured almost simultaneously like a characteristic scene (for example, the moment of cake cut at a reception), but even in this case, images may be captured with a similar composition by a plurality of imaging devices. Absent. Therefore, the techniques described in Patent Literature 1 and Patent Literature 3 may not be able to accurately correct the imaging date / time data.

  In the technique described in Patent Document 2, since the image date / time data is corrected by moving the image file manually, it takes time and effort to correct the image date / time data.

  The present invention has been made in view of the above-described problems, and is an information processing apparatus capable of easily and accurately correcting image capturing time data of image files captured by a plurality of image capturing apparatuses, and a display in the information processing apparatus. One of the purposes is to provide a method and a program.

  The present invention is applied to an information processing apparatus having a storage unit that is captured by a plurality of imaging devices and stores a plurality of image files including image data and imaging time data of the image data. Then, based on the imaging time data, the frequency calculation unit that calculates the frequency of the image file that includes the imaging time within a predetermined time range and the frequency of the image file calculated by the frequency calculation unit are compared for each imaging device. A correction value calculation unit that calculates a correction value of imaging time data of an image file imaged by another imaging device with respect to imaging time data of an image file imaged by one imaging device so that this frequency matches, A display control unit that corrects the imaging time data using the correction value calculated by the correction value calculation unit, and generates a screen display signal for displaying a display screen that displays a plurality of image files according to a transition of time; and a screen By providing an output unit that outputs a display signal, at least a part of the above-described problems is solved.

  The frequency calculation unit calculates the frequency of the image file including the imaging time within a predetermined time range based on the imaging time data, and the correction value calculation unit captures the frequency of the image file calculated by the frequency calculation unit. Comparing each device, the correction value of the imaging time data of the image file captured by the other imaging device is calculated with respect to the imaging time data of the image file captured by the one imaging device so that this frequency matches. Therefore, the display control unit corrects the imaging time data with the correction value calculated by the correction value calculation unit, and generates a screen display signal for displaying a display screen that displays a plurality of image files according to the transition of time. Then, on the display screen generated based on the screen display signal, the image file is displayed in a state where the shift of the imaging time data based on the shift of the internal clock of the imaging device is corrected.

  Here, the correction value calculation unit adds or subtracts the difference value to the imaging time data of the image file captured by at least one of the other imaging devices, and captures the frequency of the image file calculated by the frequency calculation unit. It is preferable to output a difference value having the same frequency compared with each device as a correction value.

  The information processing apparatus preferably includes an arrangement unit that arranges a plurality of image files on the time axis for each imaging apparatus based on the imaging time data. In this case, the frequency calculation unit provides time intervals each having substantially the same time range on the time axis, and in the state arranged by the arrangement unit, the frequency of the image file including the imaging time for each time interval is obtained as the imaging time data. It is preferable to calculate based on Further, the correction value calculation unit compares the frequency of the image file for each time interval calculated by the frequency calculation unit for each imaging device, and captures the image file captured by one imaging device so that the frequency matches. It is preferable to calculate a correction value of imaging time data of an image file captured by another imaging device with respect to time data.

  The information processing apparatus preferably includes an imaging time update unit that updates the imaging time data with the correction value calculated by the correction value calculation unit and stores the data in the storage unit.

  In addition, the present invention is applied to a display method in an information processing apparatus having a storage unit that is captured by a plurality of imaging devices and stores a plurality of image files including image data and imaging time data of the image data. Then, based on the imaging time data, the step of calculating the frequency of the image file including the imaging time within a predetermined time range is compared with the frequency of the calculated image file for each imaging device, and this frequency matches. As described above, the step of calculating the correction value of the imaging time data of the image file captured by the other imaging device with respect to the imaging time data of the image file captured by the one imaging device, and the imaging time data by the calculated correction value And generating a screen display signal for displaying a display screen for displaying a plurality of image files according to a transition of time, and a step of outputting the screen display signal as described above. Solves at least some of the challenges.

  Furthermore, the present invention is applied to a program executed by a computer having a storage unit that is imaged by a plurality of imaging devices and stores a plurality of image files including image data and imaging time data of the image data. When this program is executed by a computer, the program calculates the frequency of an image file whose imaging time is included within a predetermined time range based on the imaging time data, and images the calculated frequency of the image file. The step of calculating the correction value of the imaging time data of the image file captured by another imaging device with respect to the imaging time data of the image file captured by one imaging device so that this frequency is matched for each device And correcting the imaging time data with the calculated correction value to generate a screen display signal for displaying a display screen for displaying a plurality of image files according to the transition of time, and the screen display signal By providing the output step, at least a part of the above-described problems is solved.

  According to the present invention, it is possible to appropriately correct imaging time data of an image file regardless of the subject and composition included in the image file. Further, it is possible to save the operator from manually selecting and correcting a similar image file. Therefore, according to the information processing apparatus of the present invention, it is possible to easily and accurately correct imaging time data of image files captured by a plurality of imaging apparatuses.

1 is a diagram illustrating a schematic configuration of an image display system including an information processing apparatus according to an embodiment of the present invention. It is a block diagram which shows schematic structure of the information processing apparatus which is one Embodiment of this invention. It is a functional block diagram which shows the function structure of the information processing apparatus of one Embodiment. It is a figure which shows the data structure of the image file applied to the information processing apparatus of one Embodiment. It is a figure which shows the data structure of the evaluation value table applied to the information processing apparatus of one Embodiment. It is a figure which shows the data structure of the registration table applied to the information processing apparatus of one Embodiment. It is a figure for demonstrating an example of the correction value calculation procedure in the information processing apparatus of one Embodiment. It is a figure for demonstrating the other example of the correction value calculation procedure in the information processing apparatus of one Embodiment. It is a figure for demonstrating the other example of the correction value calculation procedure in the information processing apparatus of one Embodiment. It is a figure for demonstrating the further another example of the correction value calculation procedure in the information processing apparatus of one Embodiment. It is a figure for demonstrating an example of the procedure of the apparatus registration or apparatus follow-up in the information processing apparatus of one Embodiment. It is a flowchart for demonstrating an example of operation | movement of the information processing apparatus of one Embodiment. It is a flowchart for demonstrating an example of the apparatus registration operation | movement of the information processing apparatus of one Embodiment. 6 is a flowchart for explaining an example of a correction processing operation of the information processing apparatus according to the embodiment.

Hereinafter, an information processing apparatus according to an embodiment of the present invention will be described with reference to the drawings.
(One embodiment)
FIG. 1 is a diagram showing a schematic configuration of an image display system including an information processing apparatus according to an embodiment of the present invention. In FIG. 1, an image display system including an information processing apparatus according to an embodiment includes an information processing apparatus 1, a first imaging apparatus 2, a second imaging apparatus 3, and an image display apparatus 4.

  The information processing device 1 corrects at least the imaging time data of the image file captured by the second imaging device 3. Details of the information processing apparatus 1 will be described later. The first imaging device 2 captures a subject and generates a first image file. At that time, imaging date / time data and GPS data, which are examples of imaging time data, are added to a part of the first image file. To do. In particular, in the present embodiment, the first imaging device 2 periodically adjusts the internal clock based on the time information obtained from the GPS satellite at the time of GPS data acquisition. It can be considered that the shooting date and time data given to the file is accurate. The first imaging device 2 is, for example, a digital still camera equipped with a smartphone or a GPS device. The second imaging device 3 captures a subject and generates a second image file. At that time, imaging date / time data, which is an example of imaging time data, is assigned to a part of the second image file. The second imaging device 3 is, for example, a digital still camera that is not equipped with a GPS device.

  As an example, the first and second image files captured by the first and second imaging devices 2 and 3 are taken into the information processing device 1 by a USB (Universal Serial Bus) cable 5 which is an example of a data transfer cable. It is. Alternatively, the first and second image files picked up by the first and second image pickup devices 2 and 3 are stored in the memory card 6, and information processing is performed by inserting the memory card 6 into the information processing device 1. It is taken into the device 1.

  As an example, the image display device 4 is connected to the information processing device 1 by an HDMI (High Definition Multimedia Interface) (registered trademark) cable 7 which is an example of a data transfer cable. The image display signal output from the information processing apparatus 1 is input to the image display apparatus 4 via the HDMI cable 7, and the image display apparatus 4 displays an image on the display screen 4a based on the input image display signal. Is displayed. Alternatively, the image display device 4 may be connected to the information processing device 1 by a cable having an RCA terminal capable of transmitting and receiving a composite video signal, and a cable having an S terminal. The information processing apparatus 1 may be connected by a cable having a D terminal capable of transmitting and receiving signals. The image display device 4 is, for example, a TV or a monitor.

(Configuration of information processing apparatus according to one embodiment)
FIG. 2 is a block diagram showing a schematic configuration of the information processing apparatus 1 according to the embodiment of the present invention. 2, an information processing apparatus 1 according to the present embodiment includes a CPU (Central Processing Unit) 10, a ROM (Read Only Memory) 11, a RAM (Random Access Memory) 12, an input / output device 13, and an HDMI interface (I / F). 14, a network interface (I / F) 15 and an HDD (Hard Disk Drive) unit 16, which are connected to each other by a bus.

  The CPU 10 controls the entire information processing apparatus 1 by executing a program such as firmware stored in the ROM 11 described later. Further, the CPU 10 also operates as each functional unit as shown in FIG. 3 by executing a program stored in the ROM 11. The operation of each functional unit shown in FIG. 3 will be described later. The ROM 11 stores programs such as the firmware described above. The RAM 12 functions as a work memory of the information processing apparatus 1 and stores programs, data, and the like that are temporarily used during the operation of the information processing apparatus 1 including the CPU 10.

  The input / output device 13 includes an input interface (I / F) 13a, an input instruction unit 13b, a card interface (I / F) 13c, and a USB interface (I / F) 13d. An input instruction unit 13b and an input device 20 are connected to the input interface 13a, and an input signal input by the user operating the input instruction unit 13b or the input device 20 is received. Examples of the input instruction unit 13b include an image capture instruction button, and examples of the input device 20 include a remote controller, a keyboard, and a mouse. The card interface 13c includes a card slot (not shown), and reads / writes data from / to the memory card 6 inserted in the card slot. The format of the memory card 6 is not limited, and examples thereof include an SD memory card including mini and micro, and a Memory Stick (registered trademark). The USB interface 13d includes a USB connector (not shown), and reads / writes data from / to the USB device 21 connected to the USB connector directly or via the USB cable 5. Examples of the USB device 21 include first and second imaging devices 2 and 3 having a USB flash memory and a USB connector.

  The HDMI interface 14 includes an HDMI connector (not shown), and outputs an AV stream (video signal and audio signal) to the HDMI output device 22 connected to the HDMI connector via an HDMI cable (not shown). An example of the HDMI output device 22 is the image display device 4. The network interface 15 includes a network connector (not shown), a router 23 is connected to the network connector via a network cable (not shown), and the router 16 is connected to a WAN (Wide Area Network) 24 such as the Internet. Thus, data is transmitted to and received from the external network. The network interface 15 performs wired communication based on, for example, IEEE (The Institute of Electrical and Electronics Engineers, Inc.) 802.3 standard. Alternatively, the network interface 15 may perform wireless communication based on the IEEE 802.11 standard, or may perform both wired / wireless communication.

  The HDD unit 16 includes an HDD 16a and an HDD interface (I / F) 16b. The HDD 16a includes a disk that is a recording medium, a rotating unit that rotates the disk, and a head unit that reads / writes data from / to the disk (all not shown). When there is a data read / write command to the HDD 16a, the HDD interface 16b controls the entire HDD 16a, performs data read / write control, and outputs the read data. Further, the HDD 16a stores a first image file 50, a second image file 51, a correction value 52, an evaluation value table 53, and a registration table 54 provided by the user.

  Although the method of storing the first and second image files 50 and 51 in the HDD 16a is arbitrary, as an example, the first and second imaging devices 2 and 3 obtained as described above are first images obtained as described above. And the second image file 50, 51 are stored in the memory card 6, the memory card 6 is inserted into the card slot of the card interface 13c, and the input instructing unit 13b is operated to store in the memory card 6. There is a method of taking the stored first and second image files 50 and 51 into the HDD 16a. Also, the USB cable 5 connected to the first and second imaging devices 2 and 3 that capture the first and second image files 50 and 51 is inserted into the USB connector of the USB interface 13d, and the input instruction unit 13b. The first and second image files 50 and 51 stored in the first and second image pickup devices 2 and 3 may be taken into the HDD 16a by operating. Further, the first and second image files 50 and 51 existing in the WAN 24 may be taken into the HDD 16 a via the router 23 and the network interface 15. Detailed configurations of the first and second image files 50 and 51, the correction value 52, the evaluation value table 53, and the registration table 54 will be described later. In FIG. 2, one each of the first and second image files 50 and 51 are shown, but in the present embodiment, a plurality of first and second image files 50 and 51 are stored in the HDD 16a. May be.

(Functional configuration of information processing apparatus of one embodiment)
FIG. 3 is a functional block diagram illustrating a functional configuration of the information processing apparatus 1 according to the embodiment. In FIG. 3, the information processing apparatus 1 according to the present embodiment includes a control unit 30, a storage unit 31, an input unit 32, and an output unit 33.

  The storage unit 31 stores a first image file 50, a second image file 51, a correction value 52, an evaluation value table 53, and a registration table 54. The first image file 50 includes first image data 50a and imaging time data 50b. Similarly, the second image file 51 includes second image data 51a and imaging time data 51b. The image data 50a and 51a and the imaging time data 50b and 51b of the first and second image files 50 and 51 are used when the first and second imaging devices 2 and 3 capture the subject. Are generated or assigned by the imaging devices 2 and 3. Details of the first image file 50, the second image file 51, the correction value 52, the evaluation value table 53, and the registration table 54 will be described later.

  The control unit 30 includes an arrangement unit 34, a frequency calculation unit 35, a correction value calculation unit 36, an imaging time update unit 37, and a display control unit 38.

  The arrangement unit 34 arranges the plurality of image files 50 and 51 on the time axis for each of the imaging devices 2 and 3 based on the imaging time data 50 b and 51 b of the first and second image files 50 and 51. More specifically, the arrangement unit 34 prepares time axes in which the first and second image files 50 and 51 are arranged for each of the imaging devices 2 and 3 (in this embodiment, two time axes). With reference to the imaging time data 50b and 51b of the first and second image files 50 and 51, the first and second image files 50 and 51 are arranged at positions on the time axis indicated by the imaging time data 50b and 51b. To do. That is, the first image file 50 is arranged on the time axis on one time axis, and the second image file 51 is arranged on the time axis on the other time axis.

  The frequency calculation unit 35, based on the imaging time data 50b and 51b of the first and second image files 50 and 51, an image file that includes the imaging time indicated by the imaging time data 50b and 51b within a predetermined time range. The frequency of 50 and 51 is calculated. Preferably, the frequency calculation unit 35 provides time sections having substantially equal time ranges on the time axis on which the arrangement unit 34 arranges the image files 50 and 51, and the arrangement unit 34 arranges the image files 50 and 51. Thus, for each time interval, the frequency of the image files 50 and 51 in which the imaging time indicated by the imaging time data 50b and 51b is included in the time interval is calculated based on the imaging time data 50b and 51b.

  As will be described later, since the imaging time data 50b and 51b provided by the first and second imaging devices 2 and 3 are often in units of seconds, the frequency calculation unit 35 uses the image files 50 and 51 on the time axis. Can be calculated in seconds. However, if the function of continuously shooting a plurality of image files 50 and 51 is different depending on the performance of the imaging devices 2 and 3, and the continuous shooting function of the imaging devices 2 and 3 is not high, calculating the frequency in units of 1 to 2 It may become a frequency of about. Further, the operator (cameraman) of the imaging devices 2 and 3 does not always use the continuous shooting function frequently. Accordingly, the frequency calculation unit 35 may calculate the frequency of the image files 50 and 51 in a time interval such as 60 seconds so that an appropriate correction value can be calculated by the correction value calculation unit 36 described later.

  The correction value calculation unit 36 compares the frequencies of the image files 50 and 51 calculated by the frequency calculation unit 35 for each of the imaging devices 2 and 3, so that the frequencies match, that is, the first imaging device, that is, the first imaging device. Another imaging device, that is, the first imaging device 2 or the second imaging device, with respect to the imaging time data 50b and 51b of the image files 50 and 51 captured by either the imaging device 2 or the second imaging device 3. The correction values of the imaging time data 50b and 51b of the image files 50 and 51 captured by the other device 3 are calculated. Preferably, the correction value calculation unit 36 adjusts the difference value to the imaging time data 50b and 51b of the image files 50 and 51 captured by at least one imaging device 2 and 3 among the other imaging devices 2 and 3, The frequency of the image files 50 and 51 calculated by the frequency calculation unit 35 is compared for each of the imaging devices 2 and 3, and a difference value having the same frequency is output as a correction value. More preferably, the correction value calculation unit 36 compares the frequency of the image files 50 and 51 for each time interval calculated by the frequency calculation unit 35 for each of the imaging devices 2 and 3, so that the frequency matches. Another imaging device, that is, the first imaging device, for the imaging time data 50b and 51b of the image files 50 and 51 captured by either the imaging device, that is, the first imaging device 2 or the second imaging device 3. Correction values of the imaging time data 50b and 51b of the image files 50 and 51 captured by the other of the apparatus 2 or the second imaging apparatus 3 are calculated. The correction value calculated by the correction value calculation unit 36 is stored in the storage unit 31 (correction value 52).

  The correction value calculation unit 36 not only calculates the correction value in a state where the frequencies of the image files 50 and 51 calculated by the frequency calculation unit 35 are completely matched, but also matches the frequency trend even if they do not match completely. It is preferable to calculate the correction value even in such a state. The timing of capturing the subject in a strict sense varies depending on the operator of the image capturing apparatuses 2 and 3, so that the capturing time data 50 b and 51 b of the image files 50 and 51 do not exactly match even when capturing the same scene. Therefore, it is preferable to determine the matching state of the frequencies so that an appropriate correction value can be calculated by the correction value calculation unit 36, similarly to the setting of the time interval described above. As an example, the imaging time data 50b and 51b in which the peak value (maximum value) of the frequency of the image files 50 and 51 calculated by the frequency calculation unit 35 exceeds a certain threshold is captured, and the first imaging device 2 or the second imaging device 2 is captured. The difference value is added to or subtracted from the imaging time data 50b and 51b of the image files 50 and 51 imaged by the other imaging device of the imaging device 3, and the difference value when the imaging time data 50b and 51b match is used as a correction value. It may be calculated. Further, if the image files 50 and 51 are arranged in the above-described time section, the value is “1”, and if not, the value is “0”, and this value is arranged on the time axis to generate a certain pattern. The degree of coincidence of this pattern is quantified as an evaluation value. The difference value is added to or subtracted from the imaging time data 50b, 51b of the image file 50, 51 captured by the other imaging device of the first imaging device 2 or the second imaging device 3, and an evaluation value is calculated each time. The difference value when the evaluation value shows the maximum value or the minimum value may be calculated as the correction value. The evaluation value calculated by the correction value calculation unit 36 is paired with the difference value and stored in the storage unit 31 as the evaluation value table 53.

  The imaging time update unit 37 updates the imaging time data 50 b and 51 b of the image files 50 and 51 with the correction values calculated by the correction value calculation unit 36 and stores them in the storage unit 31. However, the imaging time data 50b and 51b by the imaging time update unit 37 are not essential, and only the correction value 52 is held in the storage unit 31, and the correction value 52 is referred to when the display control unit 38 described later generates an image display signal. Then, the imaging time data 50b and 51b of the image files 50 and 51 may be corrected.

  The display control unit 38 corrects the imaging time data 50b and 51b of the image files 50 and 51 with the correction value 52 calculated by the correction value calculation unit 36, and displays the plurality of image files 50 and 51 according to the transition of time. A screen display signal for displaying the display screen is generated. A preferred example of such a display screen is a display screen called a slide show display.

  The input unit 32 receives input of various data input to the information processing apparatus 1 from the external input device including the first and second imaging devices 2 and 3, and inputs the input various data to the control unit 30. Alternatively, it is stored in the storage unit 31. The output unit 33 outputs various data in the control unit 30 or the storage unit 31 including the image display signal to an external output device including the image display device 4.

  In the above configuration, the control unit 30 and the array unit 34, the frequency calculation unit 35, the correction value calculation unit 36, the imaging time update unit 37, and the display control unit 38 that constitute the control unit 30 are mainly configured by the CPU 10, and the storage unit Reference numeral 31 mainly includes a memory card 6, ROM 11, RAM 12, and HDD unit 16, the input unit 32 mainly includes an input / output device 13 and a network interface 15, and the output unit 33 mainly includes an HDMI interface 14 and a network interface 15. Consists of. The operation of each functional unit of the information processing apparatus 1 shown in FIG. 3 will be described in detail later.

(Data structure of image file)
FIG. 4 is a diagram illustrating an example of a data structure of an image file stored in the HDD 16a of the information processing apparatus 1 according to the present embodiment. In the present embodiment, the data structures of the first and second image files 50 and 51 are the same, and only the stored data is different. Therefore, in the following description of the data structure, the first image file 50 will be described as a representative. The first image file 50 of the present embodiment has a file format defined by the Exif standard, the tag information is stored in the header portion 60, the thumbnail image area 61 in which thumbnail image data is stored, and the image data 50a. Is stored in the image data area 62. In the first image file 50 of the present embodiment, the tag information stored in the header portion 60 is described in a predetermined area of the header portion 60 of the image file 50 by the first imaging device 2 when the subject is imaged.

  In the header portion 60 of the first image file 50, an ID area 63 in which a unique value for specifying the first image file 50 is described, and the number of pixels in which the number of pixels of the first image data 50a is described. An area 64, an imaging date / time area 65 in which imaging date / time data 50 b that is the imaging date / time of the image file 50 is described, an acquisition date / time area 66 in which the acquisition date / time of the image file 50 into the information processing apparatus 1 is described, and the image file 50 are imaged. A model name area 67 in which the model name of the first imaging device 2 is described, and various types of information of the imaging device when the image data 50a of the image file 50 is imaged, for example, an aperture value and a focal length are described. Position information (for example, latitude, longitude, altitude information) obtained by the GPS system indicating the position where the imaging device 2 is located when the information area 68 and the image file 50 are captured is recorded. User-defined region 70 for GPS information area 69, and the user information processing apparatus 1 arbitrarily describe various types of information are provided is. Naturally, it is optional to provide a region other than this in the header portion 60 of the image file 50.

  Here, various information described in each area of the header portion 60 will be described with an example. In the shooting date / time area 65, referring to the internal clock of the first imaging device 2, the date / time when the image data 50a of the first image file 50 was shot, that is, the shooting time data 50b indicating the shooting date / time, As an example, it is described as “2011/12/08 10:15:24”, that is, the time to the year, month, and second. The date and time when the image data 50a of the first image file 50 is imported to the information processing apparatus 1, that is, the acquisition date and time, is stored in the acquisition date and time area 66 with reference to an internal clock (not shown) of the information processing apparatus 1. As an example, it is described as “2012/03/07 18:00:58”, that is, the date and time up to the second unit. In the model name area 67, the model name of the first imaging device 2 is data determined by the manufacturer of the first imaging device 2, and is described as “XYZ- ◯” as an example. In the shooting information area 68, various information of the first imaging device 2 when the image data 50a of the first image file 50 is imaged is, for example, “aperture value F = 8, shutter speed 1/125”. Described. In the GPS information area 69, data indicating the position information obtained by using the GPS system for the position where the first imaging device 2 is located when the first image file 50 is generated, more specifically, the imaging device 2 As an example, the latitude information, longitude information, and altitude information of the position where “is” are described as “lat = + 35.09.36.266, lon = + 136.54.21.114, alt = 50”.

(Data structure of evaluation value table)
FIG. 5 is a diagram illustrating an example of a data structure of the evaluation value table 53 stored in the HDD 16a of the information processing apparatus 1 according to the present embodiment. The evaluation value table 53 in this embodiment is provided with a difference value area 71 and an evaluation value area 72, and the difference value calculated in the course of correction value calculation by the correction value calculation unit 36 described above is stored in the difference value area 71. The evaluation value area 72 is stored when the difference value is added to or subtracted from the imaging time data 50b, 51b of the image files 50, 51 captured by the other of the first imaging device 2 or the second imaging device 3. The evaluation value of is stored.

(Data structure of registration table)
FIG. 6 is a diagram illustrating an example of a data structure of the registration table 54 stored in the HDD 16a of the information processing apparatus 1 according to the present embodiment. The registration table 54 in this embodiment is provided with a group area 73 and a model name area 74. In the model name area 74, model names registered and tracked as belonging to the same group in the device registration process described later are described as belonging to the same group area 73. Details of the device registration process will be described later.

(Schematic operation of the information processing apparatus of one embodiment)
Next, the schematic operation of the information processing apparatus 1 according to the present embodiment will be described with reference to FIGS.

  FIG. 7 is a diagram illustrating an example of a correction value calculation procedure in the information processing apparatus 1 according to the present embodiment. The correction value calculation procedure is captured by the first imaging apparatus 2 and the second imaging apparatus 3 and is captured by the information processing apparatus 1. The arrangement unit 34 refers to the imaging time data 50b and 51b, and shows a state where the first and second image files 50 and 51 are arranged on the time axis provided for each of the imaging devices 2 and 3. is there.

  In this figure, the first image file 50 is arranged on the time axis 80a for arranging the first image files 50 imaged by the first imaging device 2 (indicated by “1” in the figure). Are arranged at positions indicated by the imaging time data 50b. The time axis 80a is divided into time sections 81 each having substantially the same time unit. In the illustrated example, the time interval 81 is 60 seconds. Then, the frequency 82 a on the time axis of the first image file 50 arranged by the arrangement unit 34 is calculated by the frequency calculation unit 35. Similarly, the second image file 51 is located on the time axis 80b for arranging the second image files 51 captured by the second imaging device 3 (indicated by “2” in the drawing). Are arranged at positions indicated by the imaging time data 51b. A frequency 82b on the time axis of the second image file 51 arranged by the arrangement unit 34 is calculated by the frequency calculation unit 35.

  The frequencies 82a and 82b calculated by the frequency calculation unit 35 are in units of 81 in the time interval, but in the illustrated example, in order to clearly illustrate the degree of concentration of the imaging time data 50b and 51b of the first and second image files 50 and 51. Further, the frequency of a time unit (for example, about 10 seconds) shorter than the time section 81 is illustrated. For this reason, the frequencies 82a and 82b are illustrated in the time interval 81 as maximal values.

  As shown in FIG. 7, when the frequencies 82a and 82b are compared with the starting points of the time axes 80a and 80b (9:00 in the illustrated example) aligned, the frequencies 82a and 82b in the same time section 81 do not necessarily match. Absent. Therefore, the correction value calculation unit 36 assumes that the imaging time data 50b of the image file 50 captured by the first imaging device 2 is accurate, and the imaging time of the first image file 50 on the time axis 80a. The difference value Δt is added to or subtracted from the imaging time data 51b of the second image file 51 on the time axis 80b with the data 50b as it is, and the difference value Δt when the frequencies 82a and 82b match is obtained as the correction value 52. . The value range to be set for the difference value Δt depends on the speed of the correction value calculation operation by the correction value calculation unit 36, how many image files 50 and 51 are subject to correction, and the like. This should be determined in consideration of these factors. As an example, −300 (seconds) ≦ Δt ≦ 300 seconds. Similarly, regarding the change unit of the difference value Δt, factors such as the speed of the correction value calculation operation by the correction value calculation unit 36 and the number of image files 50 and 51 to be corrected are taken into consideration. Just decide. As an example, the difference value Δt is changed in units of 10 seconds.

  FIG. 8 shows a state in which the frequencies 82a and 82b match as a result of the addition / subtraction of the difference value Δt by the correction value calculation unit 36. Although not all the maximum values of the frequencies 82a and 82b match, the maximum values of the frequency 82a all match the maximum values of the frequency 82b on the time axes 80a and 80b. The correction value calculation unit 36 determines that this state matches the frequencies 82a and 82b, and sets the difference value Δt at that time as the correction value 52. In the illustrated example, Δt = 60 seconds.

  An example of a method for calculating the degree of coincidence of the frequencies 82a and 82b will be described with reference to FIG. If the first or second image file 50, 51 is arranged in a specific time section 81 on the time axis 80a, 80b, the correction value calculation unit 36 sets the value “1” for the time section 81. Give. On the other hand, if the first or second image file 50, 51 is not arranged in the specific time section 81 on the time axis 80a, 80b, the correction value calculation unit 36 sets the value “0” for the time section 81. Is given. In this way, the correction value calculation unit 36 patterns the frequencies 82a and 82b. Next, the value of the time axis 80a and the value of the time axis 80b are compared in the same time interval 81, and a difference between the values (that is, “value of the time axis 80a−value of the time axis 80b”) is calculated. And the value which totaled all the difference of a value is calculated, and let this be an evaluation value. In the example shown in FIG. 9, the evaluation value is “−1”. The evaluation value calculated by the procedure shown in FIG. 9 is a value that can be evaluated that the frequencies 82a and 82b match when a value close to 0 is taken.

  However, depending on the appearance order of the frequencies 82a and 82b in the unit of the time interval 81, that is, the patterns of the frequencies 82a and 82b, the evaluation value may take a value close to 0 in the plurality of difference values Δt. In the example illustrated in FIG. 10, the evaluation value is close to 0 in a plurality of difference value Δt sections (Δt = 10 to 20 and Δt = 30 to 35). In this case, a difference value Δt having a wide interval (Δt = 10 to 20 in the example of FIG. 10) is adopted, and an intermediate value Δt = 15 of this interval is adopted as a correction value.

(Operation of Information Processing Device of One Embodiment)
Next, the operation of the information processing apparatus 1 of the present embodiment will be described with reference to the flowcharts of FIGS.

  FIG. 12 is a flowchart for explaining the overall operation of the information processing apparatus 1 of the present embodiment. The program shown in the flowchart of FIG. 12 is started when the information processing apparatus 1 takes in the first and second image files 50 and 51.

  First, in step S <b> 1, the control unit 30 of the information processing apparatus 1 takes in the first and second image files 50 and 51 from the first and second imaging devices 2 and 3 and stores them in the storage unit 31. Next, in step S <b> 2, device registration processing is performed on the imaging devices 2 and 3 that have generated the captured image files 50 and 51. Details of the device registration process will be described later. In step S <b> 3, correction processing for calculating correction values of the imaging time data 50 b and 51 b is performed on the first and second image files 50 and 51 captured in the information processing apparatus 1. Details of the correction processing will also be described later. In step S4, a display screen for correcting the imaging time data 50b and 51b of the image files 50 and 51 with the correction value 52 calculated in step S3 and displaying the plurality of image files 50 and 51 according to the transition of time is displayed. A screen display signal for display is generated. The screen display signal is output to an external output device via the output unit 33, and a slide screen is displayed by generating a display screen based on the screen display signal in the external output device. Thereafter, the program shown in FIG. 12 ends.

  Next, FIG. 13 is a flowchart for explaining a device registration operation in the information processing apparatus 1 of the present embodiment.

  First, in step S10, one of the first and second imaging devices 2 and 3 is selected from step S3 in FIG. 12 and FIG. Whether to use the imaging device as a reference in the correction process. The imaging device used as a reference is the imaging time data 50b and 51b of the image files 50 and 51 captured by the imaging devices 2 and 3 as in the first imaging device 2 in the description of FIGS. The imaging devices 2 and 3 are assumed to be accurate. In particular, in the present embodiment, the first imaging device 2 periodically adjusts the time of the internal clock based on the time information acquired from the GPS satellite when acquiring GPS data as described above. It is preferable to set the imaging device 2 as a reference. Hereinafter, the imaging devices 2 and 3 other than the reference imaging devices 2 and 3 are referred to as imaging devices 2 and 3 to be corrected. Information relating to the imaging device as the reference designated in step S10, for example, information relating to the model name of the imaging devices 2 and 3 described in the model name area 67 of the image files 50 and 51, is temporarily stored in the storage unit 31. The Prior to the selection input instruction by the operator, the display control unit 38 generates a screen display signal for generating a display screen for the selection input instruction, and this screen display signal is externally output via the output unit 33. The display screen for selection input instruction may be displayed by outputting to the output device and generating the display screen based on the screen display signal in the external output device.

  Next, in step S11, it is determined whether or not the captured image file has been captured by the reference imaging device specified in step S10, and is captured by the reference imaging device. If there is (YES in step S11), the program proceeds to step S12. If not (NO in step S11), the program proceeds to step S13. In the determination in step S11, the information on the model names of the imaging devices 2 and 3 described in the model name area 67 of the image files 50 and 51 and the position information are described in the GPS information area 69 of the captured image file. It may be based on whether or not.

  In step S12, device registration work for the imaging device as a reference is performed. On the other hand, in step S13, the device following operation of the imaging apparatus to be corrected is performed. Thereafter, the device registration work ends.

  Details of the device registration work and device follow-up work performed in steps S12 and S13 will be described with reference to FIG.

  FIG. 11 is a diagram for explaining an example of a procedure for device registration or device tracking in the information processing apparatus 1 according to the present embodiment. In the device registration or device following operation shown in FIG. 11, the control unit 30 of the information processing apparatus 1 performs first and second imaging described in the model name area 67 of the first and second image files 50 and 51. Device registration or device following work is performed based on the model name information of the devices 2 and 3. As an example, when the first image file 50 generated by the first imaging device 2 having the model name information “XA” is first captured, it is described in the model name area 67 of the first image file 50. Model name information “XA” is described in the model name area 74 of the registration table 54. Next, when the second image file 51 generated by the second imaging device 3 having the model name “YA” information is first captured, the control unit 30 of the information processing device 1 passes through the output unit 33. Data for displaying an input screen for inputting which first imaging device 2 should be followed by the second imaging device 3 that should perform the tracking operation is output to the image display device 4. Then, the control unit 30 of the information processing device 1 obtains the model name information “YA” of the second imaging device 3 that should perform the follow-up operation based on the selection instruction input by the user via the input unit 32. It is described in another model name area 74 associated with the group area 73 of the registration table 54 in which the model name information “XA” of the first imaging device 2 that is the follow-up destination is described. Similarly, when the first image file 50 generated by the first imaging device 2 having the model name “XB” is first captured, the model name described in the model name area 67 of the first image file 50 is acquired. Information “XB” is described in the model name area 74 of the registration table 54. Next, when the second image file 51 generated by the second imaging device 3 having the model name “YB” information is first captured, the control unit 30 should perform a follow-up operation via the output unit 33. Data for displaying an input screen for inputting which first imaging device 2 should be followed by the second imaging device 3 is output to the image display device 4. Then, based on the selection instruction input by the user via the input unit 32, the control unit 30 sets the model name information “YB” of the second imaging device 3 that should perform the tracking operation as the tracking destination. The information is added to another model name area 74 associated with the group area 73 of the registration table 54 in which the model name information “XB” of one imaging apparatus 2 is described.

  Next, FIG. 14 is a flowchart for explaining the correction processing operation in the information processing apparatus 1 of the present embodiment.

First, in step S <b> 20, the array unit 34 of the control unit 30 of the information processing device 1 is captured by the imaging devices 2 and 3 that are taken into the information processing device 1 and the imaging devices 2 and 3 to be corrected. A group of image files 50 and 51 is specified. The group of image files 50 and 51 in step S20 is a group of image files 50 and 51 captured by the set of imaging devices 2 and 3 that have undergone device registration and device tracking operations in FIG.
Next, in step S21, the arrangement unit 34 is provided for each of the imaging devices 2 and 3 with reference to the imaging time data 50b and 51b for the group of the image files 50 and 51 specified in step S20. The image files 50 and 51 are arranged at positions indicated by the imaging time data 50b and 51b on the time axis (see FIG. 6). Next, in step S22, the frequency calculation unit 35 of the control unit 30 calculates the frequency of the image files 50 and 51 for each time interval on each time axis (see FIG. 6).

  Next, in step S23, the correction value calculation unit 36 of the control unit 30 sets the difference value Δt to be added to or subtracted from the imaging time data 50b and 51b of the image files 50 and 51 captured by the imaging devices 2 and 3 to be corrected. Set to the initial value. In the present embodiment, the initial value is −α (α is a natural number), and the variation range of the difference value Δt is −α ≦ Δt ≦ α.

  Next, in step S24, the correction value calculation unit 36 adds the difference value Δt set in step S23 to the imaging time data 50b and 51b of the image files 50 and 51 captured by the imaging devices 2 and 3 to be corrected. To do. In step S25, the correction value calculation unit 36 assigns values “1” and “0” based on whether or not the image files 50 and 51 are arranged for each time interval provided on the time axis, and assigns this to the time axis. An evaluation value is calculated from the difference between values obtained by comparison in the same time interval every time (see FIG. 8), and this evaluation value is stored in the evaluation value table 53 together with the difference value Δt.

  In step S26, the correction value calculation unit 36 determines whether or not the current difference value Δt is a value α corresponding to the end point of the fluctuation range, and the current difference value Δt is a value α corresponding to the end point of the fluctuation range. If yes (YES in step S26), the program proceeds to step S28, and if the current difference value Δt is not the value α corresponding to the end point of the fluctuation range (NO in step S26), the program proceeds to step S27. . In step S27, the correction value calculation unit 36 adds a value β that is a unit of variation to the current difference value Δt. Thereafter, the program returns to step S24 and repeats the above-described processing.

  In step S <b> 28, the correction value calculation unit 36 refers to the evaluation value table 53 and detects a minimum value of the evaluation value. In step S29, the correction value calculation unit 36 detects the difference value Δt corresponding to the minimum value of the evaluation value detected in step S28 with reference to the evaluation value table 53, and this difference value Δt is detected as the correction value 52. And stored in the storage unit 31.

  The correction value 52 of the imaging time data 50b and 51b of the first and second image files 50 and 51 can be obtained by the procedure described above, and the first and second imaging devices are obtained based on the correction value 52. A slide show can be displayed on the image display device 4 in a state where the deviation of the imaging time data 50b and 51b based on the deviation of the internal clocks 2 and 3 is corrected. Here, in the information processing apparatus 1 of the present embodiment, the frequency calculation unit 35 calculates the frequency of the image files 50 and 51 on the time axis, and based on the calculation result of the frequency calculation unit 35, the imaging devices 2, 3 Since the correction value 52 is calculated so that the frequency of the image files 50 and 51 in units matches, the imaging time data 50b and 51b are appropriately corrected regardless of the subject and composition included in the image files 50 and 51. can do. Further, it is possible to save the operator from having to select and correct similar image files 50 and 51 manually. Therefore, according to the information processing apparatus 1 of the present embodiment, it is possible to easily and accurately correct the imaging time data 50b and 51b of the image files 50 and 51 captured by the plurality of imaging apparatuses 2 and 3. .

  In particular, in the information processing apparatus 1 of the present embodiment, a time interval having a time range substantially equal to the time axis is provided, and the correction value 52 is calculated by detecting the degree of coincidence of frequencies in units of this time interval. As shown in FIG. 7, even when the frequencies of the image files 50 and 51 do not all match, the imaging time data 50b and 51b can be corrected appropriately.

(Modification)
The details of the information processing apparatus of the present invention are not limited to the above-described embodiment, and various modifications can be made.

  As an example, in the above-described embodiment, the imaging time data 50b of the first and second image files 50 and 51 captured by the two imaging devices, that is, the first and second imaging devices 2 and 3, Although the correction of 51b was performed, the number of imaging devices to be corrected is not limited to two, and the present invention can also be applied to three or more imaging devices.

  When the present invention is applied to three or more image capturing apparatuses, for example, when one image capturing apparatus captures a subject and generates an image file, a function of adding GPS data to a part of the image file is provided. If so, the time of the internal clock is periodically adjusted based on the time information acquired from the GPS satellites when GPS data is obtained as described above, so this imaging device should be set as an imaging device. Can do. And when an imaging device other than this does not have a function to give GPS data to a part of this image file when imaging a subject and generating an image file, as described in the above-described embodiment, Correction is performed between the image file picked up by the reference image pickup device and the image file picked up by any one of the image pickup devices to be corrected, and this is sequentially repeated to pick up an image pickup device other than the reference image pickup device. The image file picked up by the above is corrected. Alternatively, an imaging device that gives the most accurate imaging time data based on a priority assigning procedure that omits detailed description is determined, and an image file captured by the imaging device serving as a reference with the imaging device as a reference It is also possible to perform correction for an image file captured by any one of the imaging devices to be corrected, and sequentially repeat this to correct an image file captured by an imaging device other than the reference imaging device. Is possible.

  Further, when a plurality of imaging devices have a function of adding GPS data to a part of the image file when the subject is imaged to generate an image file, imaging is performed by an imaging device that can be used as a reference. The frequency of the merged image files may be merged, and correction may be performed on the image file captured by the other imaging device on the basis of the merged frequency.

  On the other hand, various information described in the header area of the image file may be added, changed, or deleted after being described by the imaging apparatus. As an example, even when the imaging device does not have a function of adding GPS data to a part of the image file when the subject is imaged to generate an image file, the operator sequentially acquires the GPS data. A device that carries the device at the same time and matches the GPS data acquired by this device to an image file at a later date is released (for example, GPS unit kit GPS-CS3K ("GPS-CS3K | GPS unit | Sony Stock" manufactured by Sony Corporation) "Company" [searched on March 15, 2013], Internet <URL: http://www.sony.jp/gps/products/GPS-CS3K/index.html>). An image file having GPS data and an image captured by an imaging device having a function of adding GPS data to a part of the image file when an image is generated by capturing an image of a subject If there is a file, from the viewpoint of pursuing the accuracy of the GPS data, when the subject is imaged and an image file is generated, the image is captured by an imaging device having a function of adding GPS data to a part of the image file. In this way, when there is an image file that is determined to have been added, changed, or deleted after the various types of information described in the header area have been described by the imaging device, It is preferable that the imaging apparatus that generated the image file performs processing that is not used as a reference.

  As an example of a method for detecting an image file having GPS data added after an imaging operation, the information processing apparatus acquires the model name described in the model name area of the image file, and the information processing apparatus exists on the Internet. If the server name is instructed to search and if it is determined that the model name does not have a GPS data adding function based on the search result, the GPS data relating to the image file captured by the imaging device is captured. There is a method of judging that it was added later.

  For example, when an image file is captured at home or the like, this GPS data is deleted or replaced with another GPS data after the imaging operation in order to prevent the GPS data related to the image file from being exposed. It is also possible to do. Even in such a case, it is preferable that the imaging apparatus that generated the image file performs processing that is not used as a reference.

  In the above-described embodiment, the correction value calculation processing is performed for all of the image files 50 and 51 captured in the information processing apparatus 1, but some time ranges of the captured image files 50 and 51 are used. For example, the correction value calculation processing may be performed only for the image files 50 and 51 belonging to a specific month. In addition, for example, the time axis may be divided into monthly units, and the correction value calculation process described above may be performed in divided monthly units. In this case, the correction value 52 is calculated for each divided monthly unit.

  Further, in the above-described embodiment, as illustrated in FIG. 1, the information processing apparatus 1 and the first and second imaging apparatuses 2 and 3 and the image display apparatus 4 are connected by a USB cable 5 or an HDMI cable 7. However, the information processing apparatus 1 is installed on the network, the image files 50 and 51 are transferred to the information processing apparatus 1 via the network, and the screen display signal from the information processing apparatus 1 is transmitted via the network to the image display apparatus. 4 may receive.

  In the above-described embodiment, the program for operating the information processing apparatus 1 is stored and provided in the ROM 11, the HDD unit 16, and the like. However, an optical disk drive (not shown), the card interface 13c, the USB interface 13d, and the like It is also possible to connect a DVD (Digital Versatile Disc) storing a program, a USB flash memory device, a memory card 6 or the like and read the program from the DVD or the like into the information processing apparatus 1 to operate. Alternatively, a program may be stored in a device on the WAN 24 and the program may be read and operated by the information processing device 1 via the network interface 15. Furthermore, in the above-described embodiment, the information processing apparatus 1 is configured by a plurality of hardware elements. However, the CPU 10 can realize some operations of these hardware elements by the operation of a program.

DESCRIPTION OF SYMBOLS 1 Information processing apparatus 2 1st imaging device 3 2nd imaging device 4 Image display apparatus 5 USB cable 6 Memory card 7 HDMI cable 10 CPU
11 ROM
12 RAM
13 I / O device 13a Input interface 13b Input instruction unit 13c Card interface 13d USB interface 14 HDMI interface 15 Network interface 16 HDD unit 16a HDD
16b HDD interface 20 Input device 21 USB device 22 HDMI output device 23 Router 24 WAN
30 control unit 31 storage unit 32 input unit 33 output unit 34 array unit 35 frequency calculation unit 36 correction value calculation unit 37 imaging time update unit 38 display control unit 50 first image file 50a first image data 50b, 51b time data 51 Second image file 51a Second image data 52 Correction value 53 Evaluation value table 54 Registration table 80a, 80b Time axis 81 Time interval 82a, 82b Frequency

Claims (8)

In an information processing apparatus having a storage unit in which a plurality of image files captured by a plurality of imaging devices and storing image data and imaging time data of the image data are stored.
A frequency calculating unit that calculates the frequency of the image file including the imaging time within a predetermined time range based on the imaging time data;
The frequency of the image file calculated by the frequency calculation unit is compared for each of the imaging devices, and the other of the imaging time data of the image file captured by one of the imaging devices is matched so that the frequency matches. A correction value calculation unit that calculates a correction value of the imaging time data of the image file captured by the imaging device;
Display control that corrects the imaging time data with the correction value calculated by the correction value calculation unit and generates a screen display signal for displaying a display screen that displays a plurality of the image files according to a transition of time. And
An information processing apparatus comprising: an output unit that outputs the screen display signal. The correction value calculation unit adds or subtracts a difference value to the imaging time data of the image file captured by at least one of the other imaging devices, and the image file calculated by the frequency calculation unit The information processing apparatus according to claim 1, wherein a difference value in which the frequencies coincide with each other is compared as a correction value.   3. The information processing according to claim 1, wherein the information processing device includes an arrangement unit that arranges a plurality of the image files on a time axis for each of the imaging devices based on the imaging time data. apparatus.   The frequency calculation unit provides time intervals each having substantially the same time range on the time axis, and in the state arranged by the arrangement unit, the frequency of the image file including the imaging time for each time interval is The information processing apparatus according to claim 3, wherein the information processing apparatus calculates the time based on imaging time data.   The correction value calculation unit compares the frequency of the image file for each time interval calculated by the frequency calculation unit for each imaging device, and is captured by the one imaging device so that the frequencies match. The information processing apparatus according to claim 4, wherein a correction value of the imaging time data of the image file captured by the other imaging apparatus with respect to the imaging time data of the image file is calculated.   The said information processing apparatus is provided with the imaging time update part which updates the said imaging time data with the correction value calculated by the said correction value calculation part, and stores it in the said memory | storage part. An information processing apparatus according to claim 1. A display method in an information processing apparatus having a storage unit in which a plurality of image files captured by a plurality of imaging devices and storing a plurality of image files including image data and imaging time data of the image data are stored.
Calculating the frequency of the image file whose imaging time is included within a predetermined time range based on the imaging time data;
The calculated frequency of the image file is compared for each imaging device, and imaging is performed by another imaging device with respect to the imaging time data of the image file captured by one imaging device so that the frequencies match. Calculating a correction value of the imaging time data of the image file that has been
Correcting the imaging time data by the calculated correction value, and generating a screen display signal for displaying a display screen for displaying a plurality of the image files according to a transition of time;
And a step of outputting the screen display signal. A display method in an information processing apparatus. A program executed by a computer having a storage unit that is captured by a plurality of imaging devices and stores a plurality of image files including image data and imaging time data of the image data,
When this program is executed by a computer,
Calculating the frequency of the image file whose imaging time is included within a predetermined time range based on the imaging time data;
The calculated frequency of the image file is compared for each imaging device, and imaging is performed by another imaging device with respect to the imaging time data of the image file captured by one imaging device so that the frequencies match. Calculating a correction value of the imaging time data of the image file that has been
Correcting the imaging time data by the calculated correction value, and generating a screen display signal for displaying a display screen for displaying a plurality of the image files according to a transition of time;
And a step of outputting the screen display signal.

Images