JP4276920B2 - Information processing program, storage medium, information processing apparatus, and information processing method - Google Patents

Description

  The present invention relates to an information processing technique, and more particularly to a technique for correcting a shooting date and time in a digital image file to an accurate date and time when an error occurs in a clock in a terminal device.

  Conventionally, the date and time of shooting can be recorded in an image file shot with a digital camera. However, if there is an error in the clock built in the digital camera, the date / time information must be corrected manually using an EXIF editor or the like for each image file.

For this reason, if there is a difference between the clock time of the personal computer (PC) that stores the image file and the clock time of the digital camera, the shooting time of the image captured from the digital camera is corrected by the time corresponding to the difference. The technique which performs is proposed (for example, refer patent document 1).
JP 2002-44596 A

  However, the technique described in Patent Document 1 captures an image from an external device when the current date and time indicated by the external device that captured the image is different from the current date and time of the file storage device when the image is captured to the file storage device. A file storage device for correcting shooting date / time information of an image file is disclosed. Since this file storage device corrects only the time corresponding to the current time difference, the time interval of the digital camera clock as an external device is inaccurate, and correction of past time due to advance or delay of time is possible. Is not supported. It also does not support correction when the digital camera's watch is reset due to battery replacement.

  Furthermore, since the technique described in Patent Document 1 corrects the time when the file is stored in the file storage device, it cannot correct the time of the image file already stored in the file storage device.

  The present invention has been made in view of such circumstances, and can correct the shooting date and time in accordance with the advance / delay of the clock of the terminal device, and can also capture an image file that has already been saved. An object is to provide an information processing program, a storage medium, an information processing apparatus, and an information processing method capable of correcting the date and time.

The program according to claim 1 of the present invention is an information processing program for an information processing device, and includes a time information acquisition procedure for acquiring time information of a clock of a terminal device connected to the information processing device, and a current correct information A current date and time acquisition procedure for acquiring a first current date and time as a date and a second current date and time measured by the clock of the terminal device acquired in the timing information acquisition procedure; and the terminal at the acquired first current date and time A clock correction procedure for correcting the clock date and time of the device, a clock correction history storage procedure for storing the first current date and time and the second current date and time used for correction in the clock correction procedure as clock correction history, An image acquisition procedure for acquiring a captured image from the terminal device connected to the information processing device, a shooting date and time given to the image acquired in the image acquisition procedure, and the clock correction history storage Compared with the last clock correction date and time of the terminal device stored in step 3, the reset determination procedure for determining whether or not the image was taken after the reset of the terminal device, and the reset determination procedure, the image is When it is determined that the image was taken before the terminal device was reset, the shooting date and time of the image was corrected by the first correction formula, and when it was determined that the image was taken after the terminal device was reset, the first The information processing apparatus is caused to execute a shooting date / time correction procedure for correcting the shooting date / time of the image using a second correction formula different from the correction formula.

The program according to claim 2 of the present invention is a program which is the invention of the above, wherein the first correcting equation, the actual reset time T _0, the reset time t ₀ of the clock of the terminal _device, the final The actual date and time T _{n at} the time adjustment time, the date and time t _n of the terminal device at the final time adjustment time, the actual date and time T _{n−1 at} the last previous clock time adjustment time, and the last previous clock time adjustment time t _n-1 time point of the terminal _device, the actual current time T _p, with time t _p of the current terminal device, a new shot is corrected as shooting date t _a of the image taken previously reset time between the T _a,
T _A = T _n + (t _A −t _n ) × (T _n −T _n−1 ) / (t _n −t _n−1 )
And the second correction formula is calculated between the shooting date / time t _{B of the} image shot after the reset and the corrected new shooting date / time T _{B.
T B = T P - (t} P -t B) × (T n -T n-1) / (t n -t n-1)
To establish a relationship.

A program according to a third aspect of the present invention is the program according to the above invention, wherein the terminal device is at least one of a digital camera, an imaging device, a mobile terminal with a digital camera, and a mobile terminal with an imaging device. is there.

The storage medium of claim 4 according to the present invention is a storage medium storing the information processing program of the information processing apparatus, obtains the time information of the clock of the terminal device connected to the information processing apparatus counting An information acquisition step, a current date acquisition step of acquiring a first current date and time that is the current correct date and time, and a second current date and time measured by the clock of the terminal device acquired in the timekeeping information acquisition procedure; A clock correction step for correcting the clock date and time of the terminal device with the first current date and time, and the first current date and time and the second current date and time used for correction in the clock correction step are stored as a clock correction history. A clock correction history storage step, an image acquisition step of acquiring a captured image from the terminal device connected to the information processing device, and an image acquired in the image acquisition step Reset to determine whether the image was taken after reset of the terminal device by comparing the given shooting date and time with the last clock correction date and time of the terminal device stored in the clock correction history storage step When it is determined by the determination step and the reset determination step that the image is captured before the terminal device is reset, the shooting date and time of the image is corrected by a first correction formula, and the image is the terminal device. A shooting date correction step of correcting the shooting date and time of the image with a second correction formula different from the first correction formula when the information processing device is determined to have been shot after resetting I remembered the program.

The storage medium according to claim 5 of the present invention is the storage medium according to the above-described invention, wherein the first correction formula is an actual reset date / time T ₀ , a reset time / date t ₀ of the clock of the terminal device. , The actual date and time T _{n at} the final time adjustment time, the date and time t _n of the terminal device at the final time adjustment time, the actual date and time T _{n−1 at} the last previous clock time adjustment time, and the last previous clock time t _n-1 of the time adjustment time of the terminal _device, the actual current time T _p, with time t _p of the current terminal device, a new corrected as shooting date t _a of the image taken previously reset between the shooting date and time _{T a,}
T _A = T _n + (t _A −t _n ) × (T _n −T _n−1 ) / (t _n −t _n−1 )
And the second correction formula is calculated between the shooting date / time t _{B of the} image shot after the reset and the corrected new shooting date / time T _{B.
T B = T P - (t} P -t B) × (T n -T n-1) / (t n -t n-1)
I remembered the program that defined the relationship.

According to a sixth aspect of the present invention, there is provided the information processing apparatus according to the sixth aspect , wherein a time information acquisition unit that acquires time information of a clock of a terminal device connected to the information processing apparatus, and a first current date and time that is a current correct date and time. Current date and time acquisition means for acquiring the second current date and time measured by the clock of the terminal device acquired by the timing information acquisition means, and corrects the date and time of the clock of the terminal device by the acquired first current date and time. Clock correction means, clock correction history storage means for storing the first current date and time and second current date and time used for correction in the clock correction means as clock correction history, and the information processor connected to the information processing apparatus Image acquisition means for acquiring a photographed image from the terminal device, photographing date and time given to the image acquired by the image acquisition means, and the last time of the terminal device stored in the clock correction history storage means Compared with the correction date and time, a reset determination unit that determines whether or not the image is captured after the terminal device is reset, and the reset determination unit determines that the image is captured before the terminal device is reset. If it is determined that the image was captured using the first correction formula and the image was taken after the terminal device was reset, a second correction formula different from the first correction formula is used. And a photographing date and time correcting means for correcting the photographing date and time of the image.

The information processing apparatus according to claim 7 of the present invention is the information processing apparatus according to the above-described invention, wherein the first correction formula is an actual reset date / time T ₀ , a reset date / time t of a clock of the terminal device. _0, the actual date and time T _n of the last time adjustment _time, date t _n of last time adjustment time of the terminal _device, the actual of the previous time the clock time adjustment of last time T _n-1, the last of the previous time t _n-1 of the clock time regulation time of the terminal _device, the actual current time T _p, with time t _p of the current terminal device newly corrected and shooting date t _a of the image taken previously reset between the Do shooting date and time T _a,
T _A = T _n + (t _A −t _n ) × (T _n −T _n−1 ) / (t _n −t _n−1 )
And the second correction formula is calculated between the shooting date / time t _{B of the} image shot after the reset and the corrected new shooting date / time T _{B.
T B = T P - (t} P -t B) × (T n -T n-1) / (t n -t n-1)
To establish a relationship.

The information processing method according to claim 8 of the present invention is an information processing method for an information processing apparatus, a time information acquisition step of acquiring time information of the clock of the terminal device connected to the information processing apparatus, A current date acquisition step for acquiring a first current date and time that is the current correct date and a second current date and time measured by the clock of the terminal device acquired in the timing information acquisition procedure, and an acquired first current date and time The clock correction step of correcting the clock date and time of the terminal device, and the clock correction history storage step of storing the first current date and the second current date and time used for correction in the clock correction step as clock correction history An image acquisition step of acquiring a captured image from the terminal device connected to the information processing device, and a shooting date assigned to the image acquired in the image acquisition step And a reset determination step for determining whether or not the image has been taken after resetting the terminal device, in comparison with the last clock correction date and time of the terminal device stored in the clock correction history storage step, and the reset If it is determined in the determination step that the image was taken before the terminal device is reset, the shooting date and time of the image is corrected by a first correction formula, and the image is taken after the terminal device is reset. If it is determined, a shooting date and time correction step of correcting the shooting date and time of the image by a second correction formula different from the first correction formula is provided.

The information processing method according to claim 9 of the present invention is the information processing method according to the above-described invention, wherein the first correction formula is an actual reset date and time T ₀ , a reset time and date t of the clock of the terminal device. _0, the actual date and time T _n of the last time adjustment _time, date t _n of last time adjustment time of the terminal _device, the actual of the previous time the clock time adjustment of last time T _n-1, the last of the previous time t _n-1 of the clock time regulation time of the terminal _device, the actual current time T _p, with time t _p of the current terminal device newly corrected and shooting date t _a of the image taken previously reset between the Do shooting date and time T _a,
T _A = T _n + (t _A −t _n ) × (T _n −T _n−1 ) / (t _n −t _n−1 )
And the second correction formula is calculated between the shooting date / time t _{B of the} image shot after the reset and the corrected new shooting date / time T _{B.
T B = T P - (t} P -t B) × (T n -T n-1) / (t n -t n-1)
To establish a relationship.

  According to the information processing program of the present invention, the shooting date / time can be corrected in accordance with the advance / delay of the clock of the terminal device, and the shooting date / time can also be corrected for an already stored image file. it can.

[First Embodiment]
FIG. 1 is a diagram showing a configuration of an information processing system to which the information processing program according to the first embodiment of the present invention is applied.

  The information processing system includes an information processing apparatus 1, a camera 2, and a communication line 3 that connects them. Here, the information processing apparatus 1 incorporates the information processing program according to the first embodiment of the present invention, receives the image file photographed by the camera 2 through the communication line 3, stores it, and corrects the photographing date and time. To do.

  The information processing apparatus 1 includes a communication interface 10, a processing unit 11, an image memory 12, an image management DB 13, a camera management DB 14, a program memory 15, a clock unit 16, a display unit 17, and an operation input unit 18.

  The communication interface 10 is an interface for exchanging various information with the camera 2. The processing unit 11 performs processing related to the correction of the shooting date and time and comprehensively controls the information processing apparatus 1. The image memory 12 stores the image file received from the camera 2. The image management DB 13 stores various management information related to images stored in the image memory 12. The camera management DB 14 stores the time adjustment history of the camera 2 that has transmitted the image file to the information processing apparatus 1. The program memory 15 stores various software files executed by the information processing apparatus 1. The clock unit 16 measures the time of the information processing apparatus 1. The display unit 17 displays information stored in the information processing apparatus 1. The operation input unit 18 receives an operation instruction input from the user and outputs it to the processing unit 11.

  The camera 2 includes a communication interface 20, an imaging unit 21, a processing unit 22, an image memory 23, a program memory 24, a clock unit 25, a display unit 26, and an operation input unit 27.

  The communication interface 20 is an interface for exchanging various types of information with the information processing apparatus 1. The imaging unit 21 acquires a light image of the subject and converts it into image data. The processing unit 22 creates an image file from the image data and comprehensively controls the camera 2. The image memory 23 stores the image file processed by the processing unit 22. The program memory 24 stores various software files executed by the camera 2 and various data. The clock unit 25 measures the time of the camera 2. The display unit 26 displays information stored in the camera 2. The operation input unit 27 receives an operation instruction input from the user and outputs it to the processing unit 22.

  The communication line 3 is a path widely used for transmitting and receiving information, and is not limited to communication using a wire such as a conductive wire or an optical fiber, but also includes wireless communication using light, sound waves, radio waves, and the like.

  Next, the photographing date / time correcting operation according to the first embodiment will be described. In the first embodiment, the shooting date / time is corrected in accordance with the advance / delay of the clock of the camera 2.

  FIG. 2 is a flowchart showing a procedure of the entire photographing date / time correction process according to the first embodiment.

  When the camera 2 is connected to the information processing apparatus 1, the processing unit 11 detects the connection via the communication interface 10 (S01), and determines whether the shooting date / time needs to be corrected (S02).

  3 and 4 are flowcharts showing a procedure for determining whether or not the photographing date / time needs to be corrected.

  In FIG. 3, the processing unit 11 of the information processing apparatus 1 first acquires camera information from the camera 2 (T01). That is, in FIG. 4, the processing unit 11 of the information processing apparatus 1 transmits a request for camera information to the camera 2 (R01).

  When this camera information request is received (Q01), the processing unit 22 of the camera 2 reads camera ID information, which is information for specifying the camera 2, from the program memory 24 (Q02). As camera ID information, for example, serial NO. and so on. Subsequently, the processing unit 22 reads the current date and time information from the clock unit 25 (Q03), and transmits the camera ID information and the current date and time information as camera information to the information processing apparatus 1 (Q04).

  The processing unit 11 of the information processing apparatus 1 receives the transmitted camera information (R02), and returns to the processing of FIG.

  Returning to FIG. 3, the processing unit 11 of the information processing apparatus 1 extracts a camera ID from the received camera information, and checks whether or not this camera ID is registered in the camera management DB 14 (T02).

  FIG. 5 is a diagram showing the configuration of the camera management DB 14. In the camera management DB 14, information on the date and time when the clock time of the camera 2 is adjusted for each camera ID is recorded as a history.

  When the camera ID is registered in the camera management DB 14 (T02 Yes), the last time adjustment date / time among the adjustment date / time information stored corresponding to the camera ID, that is, the Nth time in FIG. The time adjustment date and time is taken out (T03).

  Then, the difference between this final time adjustment date and time and the current date and time of the camera clock transmitted from the camera 2 is checked (T04). When the difference between the dates and times is smaller than a predetermined value (T04 No), since the time has not yet passed since the time of the previous camera 2 was adjusted, the correction of the shooting date and time is corrected because the clock error of the camera 2 is not large. Not required (T05). If the difference between the dates and times is greater than a predetermined value (T04 Yes), a sufficient number of days have passed since the time of the previous camera 2 was adjusted, and the camera 2 clock has an error that requires correction. It is necessary to correct the shooting date and time (T06).

  On the other hand, when the camera ID is not registered in the camera management DB 14 (T02 No), since the final time adjustment date and time of the camera 2 which is information necessary for correcting the shooting date and time described later is unknown, the correction of the shooting date and time is performed by the camera. 2 is to be implemented after the next time when it is connected to the information processing apparatus 1, and preparation for that is performed this time. Therefore, the processing unit 11 newly registers a camera ID in the camera management DB 14 (T10). Then, the processing unit 11 executes current date acquisition processing (T11).

  FIG. 6 is a flowchart showing a procedure for acquiring the current date and time.

  The processing unit 11 temporarily sets the date and time counted by the clock unit 16 of the information processing apparatus 1 as “current date and time” (R05), displays the “current date and time” in the display area, and also displays the date and time to the user. A message prompting the user to input the current date and time and a dialog for inputting the current date and time are displayed on the display unit 17 (R06).

  When the user confirms the displayed “current date and time” and corrects the “current date and time”, the user inputs the current date and time in the input dialog and completes the operation. If it is not necessary to correct the “current date and time”, the user completes the operation without inputting anything in the input dialog.

  When detecting that the completion operation has been performed (R07), the processing unit 11 checks whether or not the user has input the current date and time (R08). When the current date and time is input by the user (R08 Yes), the current date and time input by the user is set as “current date and time” (R09). When there is no input of the current date and time by the user (R08 No), the date and time of the information processing apparatus 1 is set as “current date and time”.

  Returning to FIG. 3, the processing unit 11 that has acquired the “current date and time” corrects the clock of the camera 2 with the “current date and time” (T12).

  FIG. 7 is a flowchart showing a procedure for correcting the clock of the camera 2.

  The processing unit 11 transmits a clock correction command including “current date and time” to the camera 2 (R15).

  Receiving this clock correction command, the processing unit 22 of the camera 2 extracts the “current date and time” included in the clock correction command, and matches the current date and time of the clock unit 25 to the “current date and time” (Q10, Q11). . Then, a clock correction completion confirmation including the time information indicated by the clock unit 25 at the time of correction is transmitted to the information processing apparatus 1 (Q12).

  The processing unit 11 of the information processing apparatus 1 that has received the clock correction completion confirmation from the camera 2 sets the “current date and time” as the final time adjustment date and time, the camera ID and the date and time indicated by the camera clock unit 25 at the time of correction. The associated information is registered in the camera management DB 14 (R16, R17).

  Returning to FIG. 3, the time adjustment of the camera 2 and the registration of the camera ID and the like in the camera management DB are performed by the above processing, so that the processing unit 11 states that “the shooting date and time can be corrected in the future”. It is displayed on the display unit and presented to the user (T13). Then, it is unnecessary to correct the shooting date (T14).

  Returning to FIG. 2, when it is determined that the correction of the shooting date / time is unnecessary as a result of step S02 (No in S03), this process is terminated. When it is determined that the shooting date / time needs to be corrected (S03 Yes), “current date” is acquired (S04), and the clock of the camera 2 is corrected with the acquired “current date” (S05). Since the processes in steps S04 and S05 are the same as those in steps T11 and T12 shown in FIG. 3, detailed description thereof is omitted.

  Subsequently, the processing unit 11 executes an image file acquisition process from the camera 2 (S06).

  FIG. 8 is a flowchart showing a processing procedure for acquiring an image file from the camera 2.

  In this processing procedure, image files are obtained one by one from the camera 2. The processing unit 11 transmits an image request to the camera 2 (T21).

  The processing unit 22 of the camera 2 that has received the image request checks whether or not all captured image files have been transmitted to the information processing apparatus 1 (Q21, Q22). When all captured image files are transmitted to the information processing apparatus 1 (Q22 Yes), transmission completion information for notifying that all captured image files have been transmitted is generated, and the transmission completion information is transmitted to the information processing apparatus. 1 (Q23, Q25). When all the captured image files have not been transmitted to the information processing apparatus 1 (No in Q22), the next captured image file is read from the image memory 23 and the image file is transmitted to the information processing apparatus 1 (Q24). Q25).

  The processing unit 11 that has received the captured image file or the transmission completion information determines whether or not all the image files have been acquired from the information (T22, T23). When all the image files have been acquired (T23 Yes), this image file acquisition process is terminated and the process returns to FIG.

  If all the image files have not been acquired yet (T23 No), an image ID for the transmitted image file is created (T24). This image ID is an identification number for registering the transmitted image in the image memory 12. The image file transmitted from the camera 2 is given an identification number uniquely generated by the camera 2, but the identification number may be doubled in the information processing apparatus 1. Therefore, a unique image ID is created in the information processing apparatus 1.

  Next, the shooting date / time information is extracted from the information included in the transmitted image file (T25), and the image file is stored in the image memory 12 (T26). Information such as the image ID, camera ID, and shooting date / time information is stored in the image management DB 13 having the configuration shown in FIG. 9 (T27), and the process returns to step T21 to transmit the next image file to the camera 2. Request.

  Note that in the EXIF format, which is an industry standard file format generated by a digital camera, information on the shooting date and time is included together with the image, so this information is extracted in step T25.

  Following this image acquisition process, returning to FIG. 2, the processing unit 11 performs a correction process on the stored image file (S07). In this correction process, the shooting date and time are corrected in accordance with the advance / delay of the clock of the camera 2. FIG. 10 is a diagram for explaining a method of correcting the shooting date and time.

The horizontal axis of the coordinates in FIG. 10 indicates the correct time (X), and the vertical axis indicates the time (Y) in the clock of the camera 2. Here, T ₁ : Time when the clock of the camera 2 was last adjusted to the correct time (final time adjustment date and time), T ₂ : Current correct time, S: Current time on the camera 2 clock, R: Shooting time recorded in the image, P: correct shooting time.

  When there is no advance / delay in the clock of the camera 2, X and Y have a relationship indicated by a straight line A. That is, the straight line A shows the relationship when the clock of the camera 2 shows the correct time. However, when advance is occurring in the clock of the camera 2, X and Y have a relationship indicated by a straight line B. That is, the straight line B shows the relationship when the clock of the camera 2 advances faster than the actual time.

  Then, the formula for converting the shooting time R at which the image is recorded into the correct shooting time P is obtained by the following formula (1) using the relationship of the straight line B.

P = (T ₂ −T ₁ ) · (R−T ₁ ) / (S−T ₁ ) + T ₁ (1)
FIG. 11 is a diagram illustrating a processing procedure for correcting the shooting date and time.

  The processing unit 11 extracts the last time adjustment date and time of the camera 2 from the camera management DB 14 shown in FIG. 5 (T31). Next, the image management DB 13 selects an image file whose shooting date / time is corrected from image files having the same camera ID (T32). That is, when the shooting date / time has already been corrected, the following processing is not performed, and an image file whose shooting date / time has not been corrected is selected as a correction target.

  Next, the first image file is selected to extract shooting date / time information (T33), and the correction date / time of the shooting date / time is calculated using equation (1) (T34). Then, the shooting date / time of the selected image file is rewritten with the correction date / time (T35), and the shooting date / time, shooting time, etc. of the selected image ID stored in the image management DB 13 are replaced with the correction date / time. (T36).

  If the correction of the shooting date and time of all the selected image files has not been completed (No in T37), the next shooting image file is selected (T38), and the processes in steps T34 to T37 are repeated.

  When the correction of the shooting date / time of all the selected image files is completed (T37 Yes), the process returns to FIG. 2, and the shooting date / time correction processing according to the first embodiment is ended.

  Note that the correction of the camera clock (S05) may be executed after the correction process (S07) of the shooting time of the stored image. In this case, if the processing is interrupted during the acquisition of the camera image (S06) or the correction processing of the shooting time of the stored image (S07), the camera clock is not corrected, so that the acquisition of the camera image is again performed (S06). ), The shooting date and time of the image can be corrected.

  According to the first embodiment, it is possible to correct the shooting date and time even when the camera clock is advanced / delayed. In addition, the shooting date and time can be corrected for an image file that has already been shot.

[Second Embodiment]
The configuration of the information processing system to which the information processing program of the second embodiment is applied is the same as the configuration of the first embodiment. Accordingly, the same parts as those in the first embodiment are referred to with the same reference numerals, and detailed description thereof is omitted. The second embodiment is different from the first embodiment in that the shooting date and time can be corrected even when the camera clock is reset due to, for example, battery exhaustion.

  FIG. 12 is a flowchart showing a procedure of the entire photographing date / time correction process according to the second embodiment.

  When the camera 2 is connected to the information processing apparatus 1, the processing unit 11 detects the connection via the communication interface 10 (S11), and determines whether it is necessary to correct the shooting date and time (S12).

  FIG. 13 and FIG. 14 are flowcharts showing a procedure for determining whether or not the photographing date / time needs to be corrected.

  In FIG. 13, the processing unit 11 of the information processing apparatus 1 first executes a process of acquiring camera information from the camera 2 (T41). That is, in FIG. 14, the processing unit 11 of the information processing apparatus 1 transmits a camera information request to the camera 2 (R21).

  When this camera information request is received (Q31), the processing unit 22 of the camera 2 reads camera ID information, which is information for specifying the camera 2, from the program memory 24 (Q32). As camera ID information, for example, serial NO. and so on. Subsequently, the processing unit 22 reads the current date / time information from the clock unit 25 (Q33), and further extracts the image ID and the shooting date / time information of the image in the image memory 23 (Q34). Then, the camera ID information, the image ID, and the shooting date / time information are transmitted to the information processing apparatus 1 as camera information (Q35).

  The processing unit 11 of the information processing apparatus 1 receives the transmitted camera information (R22), and returns to the processing of FIG.

  Returning to FIG. 13, the processing unit 11 of the information processing apparatus 1 extracts the camera ID from the received camera information, and checks whether or not this camera ID is registered in the camera management DB 14 shown in FIG. 5 (T42).

  When the camera ID is registered in the camera management DB 14 (T42 Yes), among the adjustment date information stored corresponding to the camera ID, the last time adjustment date, that is, the Nth time in FIG. The time adjustment date is taken out (T43).

  Then, it is checked whether or not there is a camera image having a shooting date and time before the final time adjustment date and time (T44). The date of the camera 2 that has been reset is recognized as a date in the past that is far from January 1, 1900, for example. Therefore, it is possible to determine whether or not there is a reset by determining whether or not the photographing date and time is earlier than the final time adjustment date and time.

  When there is no camera image having a shooting date and time prior to the last time adjustment date and time (No in T44), the same processing as in the first embodiment is performed. That is, the difference between the last time adjustment date and time and the current date and time of the camera clock transmitted from the camera 2 is checked (T45). When the difference between the dates and times is smaller than a predetermined value (T45 No), since the time has not passed yet since the time of the camera 2 was adjusted last time, the clock date and time of the camera 2 is not so large and the shooting date and time are corrected. It is unnecessary (T46). If the difference between the dates and times is larger than a predetermined value (T45 Yes), a sufficient number of days have passed since the time of the previous camera 2 was adjusted, and the camera 2 clock has an error that requires correction. It is necessary to correct the shooting date and time (T47).

  If there is a camera image having a shooting date and time earlier than the last time adjustment date and time (T44 Yes), the camera image was taken after the date of the camera 2 was reset after the last time adjustment date and time. It is determined to be an image. Next, it is checked whether or not the clock adjustment history is stored twice or more in the camera management DB 14 (T48).

  When two or more clock adjustment histories are stored in the camera management DB 14 (T48 Yes), it is possible to correct the shooting date and time after reset, which will be described later, and thus it is necessary to correct the shooting date and time (T47). . If the camera management DB 14 does not store the clock adjustment history more than once (No in T48), it is impossible to correct the shooting date after reset, which will be described later. 17 (T49), it is unnecessary to correct the shooting date and time (T46).

  On the other hand, when the camera ID is not registered in the camera management DB 14 (T42 No), since the final time adjustment date and time of the camera 2, which is information necessary for correcting the shooting date and time described later, is unknown, the correction of the shooting date and time is performed by the camera. 2 is to be implemented after the next time when it is connected to the information processing apparatus 1, and preparation for that is performed this time. Therefore, the processing unit 11 newly registers a camera ID in the camera management DB 14 (T53). Then, the processing unit 11 acquires the current date and time, and corrects the clock of the camera 2 with the date and time (T54 and T55).

  Note that the current date acquisition processing and camera clock correction processing are the same as the processing in FIGS.

  Through the above processing, the time adjustment of the camera 2 and the registration of the camera ID and the like in the camera management DB 14 are performed, so that the processing unit 11 displays on the display unit 17 that “the photographing date and time can be corrected in the future”. To the user (T56). Then, it is unnecessary to correct the shooting date and time (T57).

  Returning to FIG. 12, when it is determined that the correction of the shooting date / time is unnecessary as a result of step S12 (No in S13), this process is terminated. When it is determined that the shooting date / time needs to be corrected (S13 Yes), the “current date / time” is acquired (S14), and the clock of the camera 2 is corrected with the acquired “current date / time” (S15). Since the processes in steps S14 and S15 are the same as the processes in FIGS. 6 and 7, respectively, detailed description thereof is omitted.

  Subsequently, the processing unit 11 executes processing for acquiring an image file from the camera 2 (S16).

  FIG. 15 is a flowchart showing a processing procedure for acquiring an image file from the camera 2.

  In this processing procedure, image files acquired from the camera 2 are classified into an image group before date reset (group A) and an image group after date reset (group B). Therefore, the areas of group A and group B are generated as preparation processing (T61), and the last time adjustment date and time of the camera 2 is extracted from the camera management DB 14 (T62). Then, the processing unit 11 transmits an image request to the camera 2 (T63).

  The processing unit 22 of the camera 2 that has received the image request checks whether or not all captured image files have been transmitted to the information processing apparatus 1 (Q41, Q42). When all the captured image files are transmitted to the information processing apparatus 1 (Q42 Yes), information for notifying that all captured image files have been transmitted is generated, and the transmission completion information is transmitted to the information processing apparatus 1. Transmit (Q43, Q45). When not all the captured image files have been transmitted to the information processing apparatus 1 (No in Q42), the next captured image file is read from the image memory 23, and the image file is transmitted to the information processing apparatus 1 (Q44). Q45).

  The processing unit 11 that has received the captured image file or the transmission completion information determines whether or not all the image files have been acquired from the information (T64, T65). When all the image files have been acquired (T65 Yes), this image file acquisition process ends and the process returns to FIG.

  If all the image files have not been acquired yet (T65 No), an image ID for the transmitted image file is created (T66). This image ID is an identification number for registering the transmitted image in the image memory 12. The image file transmitted from the camera 2 is given an identification number uniquely generated by the camera 2, but the identification number may be doubled in the information processing apparatus 1. Therefore, a unique image ID is created in the information processing apparatus 1.

  Next, the shooting date / time information included in the transmitted image file is extracted (T67), and the image file is stored in the image memory 12 (T68). Information such as the image ID, camera ID, and shooting date / time information is stored in the image management DB 13 having the configuration shown in FIG. 9 (T69), and the image files are classified into groups. That is, if the shooting date is after the last time adjustment date, the image file is registered in group A (T70 Yes, T71). If the shooting date is before the last time adjustment date, the image file is registered in group B. (T70 No, T71). Returning to step T21, the camera 2 is requested to transmit the next image file.

  Following this image acquisition process, returning to FIG. 12, the processing unit 11 performs a correction process on the stored image file (S17). In this correction process, the shooting date and time are corrected before and after the clock of the camera 2 is reset.

FIG. 16 illustrates a method for correcting the shooting date and time.

  The horizontal axis of the coordinates in FIG. 16 indicates the actual date and time (X), and the vertical axis indicates the date and time (Y) in the clock of the camera 2. A straight line C represents a state before the clock of the camera 2 is reset, and a straight line D represents a state after the clock of the camera 2 is reset. Accordingly, the two straight lines C and D can be treated as having the same inclination.

  Note that the gap between the straight line C and the straight line B at the actual time indicates that the clock of the camera was stopped due to battery exhaustion and the clock was reset when the battery was replaced with a new battery.

Here, T ₀ : actual reset date / time, t ₀ : camera 2 reset date / time, T _n : actual date / time at the final time adjustment time, t _n : date / time of the camera 2 at the final time adjustment time, T _n−1 : Actual date and time at the last clock time adjustment time, t _n-1 : Camera date and time at the last previous clock time adjustment time, T _p : Actual current date and time, t _p : Current camera 2, T _A : actual shooting date / time of image, t _A : shooting date / time of camera 2, T _B : actual shooting date / time of image, t _B : shooting date / time of camera 2. Note that t _n-1 = T _n-1 .

As shown in FIG. 16, an image file shot between T _{n and} T ₀ at the actual date and time is registered in the group A, and an image file shot between T _{0 and} T _p at the actual date and time is stored in the group. Registered in B.

  Then, the correction coefficient α representing the reciprocal of the slope of the straight line C is represented by the equation (2), and the correction coefficient β representing the reciprocal of the straight line D is represented by the equation (3).

α = (T _n −T _n−1 ) / (t _n −t _n−1 ) (2)
β = (T _p −T ₀ ) / (t _p −t ₀ ) (3)
When formula (3) is modified to obtain T ₀ , formula (4) is obtained.

_{T 0 = T p - (t} p -t 0) × β ... formula (4)
As described above, since the slopes of the straight line C and the straight line D are considered to be equal (α = β), Expression (5) is established.

T ₀ = T _p − (t _p −t ₀ ) × α (5)
Under the above preparatory, the actual shooting date T _A of the image belonging to the group A, given by equation (6).

T _A = T _n + (t _A −t _n ) × α (6)
Further, the actual shooting date and time TB of the images belonging to the group B can be obtained by Expression (7).

T _B = T _p − (t _p −t _B ) × α (7)
FIG. 17 is a diagram illustrating a processing procedure for correcting the shooting date and time.

  The processing unit 11 selects image files belonging to the group A or the group B (T81). Then, the image file with the oldest shooting date and time is selected (T82), and it is checked whether the selected image belongs to group A or group B (T83).

  When the selected image belongs to the group A, the correction date / time of the shooting date / time is calculated by the equation (6) (T83 Yes, T84). When the selected image belongs to the group B, the correction date / time of the shooting date / time is calculated by the equation (7) (T83 No, T85).

  Then, the shooting date / time of the selected image file is rewritten with the correction date / time (T86), and the shooting date / time, shooting time, etc. of the selected image ID stored in the image management DB 13 is replaced with the correction date / time. (T87).

  If the correction of the shooting date and time of all the image files belonging to group A and group B has not been completed (No in T88), the next shot image file is selected (T89), and the processes of steps T83 to T88 are repeated.

  When the correction of the shooting date / time of all the selected image files is completed (T87 Yes), the process returns to FIG. 12, and the shooting date / time correction processing according to the second embodiment is ended.

  According to the second embodiment, even when the camera clock is reset and an error occurs between the camera time and the actual time, the shooting date and time can be corrected.

  In each of the above-described embodiments, the date and time of the image file from the camera is corrected. However, the present invention is not limited to this mode, and the correction processing of the shooting date and time is performed with a terminal device having an imaging function. Can do. Therefore, the present invention can be widely applied to a digital camera, an imaging device, a portable terminal with a digital camera, a portable terminal with an imaging device, and the like.

  It should be noted that the functions described in the above embodiments are not limited to being configured using hardware, but can be realized by causing a computer to read a program describing each function using software. Each function may be configured by appropriately selecting either software or hardware.

  Furthermore, each function can be realized by causing a computer to read a program stored in a storage medium (not shown). Here, as long as the storage medium in this embodiment can store a program and can be read by a computer, the storage format may be any form.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

The figure which shows the structure of the information processing system to which the information processing program of 1st Embodiment which concerns on this invention is applied. The flowchart which shows the procedure of the whole imaging | photography date correction process which concerns on 1st Embodiment. The flowchart which shows the procedure which determines the correction | amendment necessity of imaging | photography date / time. The flowchart which shows the procedure which determines the correction | amendment necessity of imaging | photography date / time. The figure which shows the structure of camera management DB. The flowchart which shows the acquisition procedure of the present date. The flowchart which shows the procedure which correct | amends the clock of a camera. The flowchart which shows the process procedure which acquires an image file from a camera. The figure which shows the structure of image management DB. The figure explaining the correction method of imaging | photography date. The figure which shows the process sequence which corrects imaging | photography date. The flowchart which shows the procedure of the whole imaging | photography date correction process which concerns on 2nd Embodiment. The flowchart which shows the procedure which determines the correction | amendment necessity of imaging | photography date / time. The flowchart which shows the procedure which determines the correction | amendment necessity of imaging | photography date / time. The flowchart which shows the process procedure which acquires an image file from a camera. The figure explaining the correction method of imaging | photography date. The figure which shows the process sequence which corrects imaging | photography date.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Information processing apparatus, 2 ... Camera, 3 ... Communication line, 11 ... Processing part, 12 ... Image memory, 13 ... Image management DB, 14 ... Camera management DB, 16 ... Clock part, 17 ... Display part, 18 ... Operation Input unit, 21 ... imaging unit, 22 ... processing unit, 25 ... clock unit, 26 ... display unit, 27 ... operation input unit.

Claims (9)

An information processing program for an information processing apparatus,
A time information acquisition procedure for acquiring time information of a clock of a terminal device connected to the information processing device;
A current date acquisition procedure for acquiring a first current date and time that is the current correct date and a second current date and time measured by the clock of the terminal device acquired in the timing information acquisition procedure;
A clock correction procedure for correcting the date and time of the clock of the terminal device with the acquired first current date and time;
A clock correction history storage procedure for storing the first current date and time and the second current date and time used for correction in the clock correction procedure as a clock correction history;
An image acquisition procedure for acquiring a captured image from the terminal device connected to the information processing device;
Compared with the shooting date and time given to the image acquired in the image acquisition procedure and the last clock correction date and time of the terminal device stored in the clock correction history storage procedure, after the image is reset A reset determination procedure for determining whether or not the image has been shot;
When it is determined by the reset determination procedure that the image was taken before the terminal device is reset, the shooting date and time of the image is corrected by a first correction formula, and the image is taken after the terminal device is reset. A shooting date and time correction procedure for correcting the shooting date and time of the image by a second correction formula different from the first correction formula;
For causing the information processing apparatus to execute the program. The first correction formula includes an actual reset date and time T ₀ , a terminal device clock reset date and time t ₀ , an actual date and time T _{n at} the final time adjustment time, a terminal device date and time t _n at the final time adjustment time, and the final The actual date and time T _{n-1 of} the previous clock time adjustment time, the date and time t _n-1 of the terminal device at the last previous clock time adjustment time, the actual current date and time T _p , and the current terminal device with time t _p, between the new shooting date T _a which is corrected with the shooting date t _a of the image taken previously reset,
T _A = T _n + (t _A −t _n ) × (T _n −T _n−1 ) / (t _n −t _n−1 )
To establish a relationship
The second correction equation is calculated between the shooting date / time t _{B of the} image shot after the reset and the corrected new shooting date / time T _{B.
T B = T P - (t} P -t B) × (T n -T n-1) / (t n -t n-1)
The program according to claim 1, wherein the relationship is defined as follows.   The program according to claim 1 or 2, wherein the terminal device is at least one of a digital camera, an imaging device, a portable terminal with a digital camera, and a portable terminal with an imaging device. A storage medium storing an information processing program of the information processing apparatus,
A time information acquisition step of acquiring time information of a clock of a terminal device connected to the information processing device;
A current date and time acquisition step of acquiring a first current date and time that is the current correct date and time and a second current date and time measured by the clock of the terminal device acquired in the timing information acquisition procedure;
A clock correction step of correcting the date and time of the clock of the terminal device with the acquired first current date and time;
A clock correction history storage step for storing the first current date and time and the second current date and time used for correction in the clock correction step as a clock correction history;
An image acquisition step of acquiring a captured image from the terminal device connected to the information processing apparatus;
Compare the shooting date and time given to the image acquired in the image acquisition step with the last clock correction date and time of the terminal device stored in the clock correction history storage step, and after the image is reset A reset determination step for determining whether or not the image has been shot;
If it is determined in the reset determination step that the image was taken before the terminal device is reset, the shooting date and time of the image is corrected by a first correction formula, and the image is taken after the terminal device is reset. A shooting date and time correction step of correcting the shooting date and time of the image by a second correction formula different from the first correction formula;
A storage medium storing a program for causing the information processing apparatus to execute the program. The first correction formula includes an actual reset date and time T ₀ , a terminal device clock reset date and time t ₀ , an actual date and time T _{n at} the final time adjustment time, a terminal device date and time t _n at the final time adjustment time, and the final The actual date and time T _{n-1 of} the previous clock time adjustment time, the date and time t _n-1 of the terminal device at the last previous clock time adjustment time, the actual current date and time T _p , and the current terminal device with time t _p, between the new shooting date T _a which is corrected with the shooting date t _a of the image taken previously reset,
T _A = T _n + (t _A −t _n ) × (T _n −T _n−1 ) / (t _n −t _n−1 )
To establish a relationship
The second correction equation is calculated between the shooting date / time t _{B of the} image shot after the reset and the corrected new shooting date / time T _{B.
T B = T P - (t} P -t B) × (T n -T n-1) / (t n -t n-1)
The storage medium storing the program according to claim 4, wherein: An information processing apparatus,
Time information acquisition means for acquiring time information of a clock of a terminal device connected to the information processing device;
Current date and time acquisition means for acquiring a first current date and time that is the current correct date and time, and a second current date and time measured by the clock of the terminal device acquired by the timing information acquisition means;
Clock correcting means for correcting the date and time of the clock of the terminal device with the acquired first current date and time;
Clock correction history storage means for storing the first current date and time and the second current date and time used for correction in the clock correction means as clock correction history;
Image acquisition means for acquiring a captured image from the terminal device connected to the information processing apparatus;
Compared with the shooting date and time given to the image acquired by the image acquisition means and the last clock correction date and time of the terminal device stored in the clock correction history storage means, after the image is reset Reset determination means for determining whether or not the image has been shot;
When the reset determination means determines that the image was taken before the terminal device is reset, the shooting date and time of the image is corrected by a first correction formula, and the image is taken after the terminal device is reset. An information processing apparatus comprising: a photographing date and time correcting unit that corrects the photographing date and time of the image by a second correction formula different from the first correction formula when it is determined. The first correction formula includes an actual reset date and time T ₀ , a terminal device clock reset date and time t ₀ , an actual date and time T _{n at} the final time adjustment time, a terminal device date and time t _n at the final time adjustment time, and the final The actual date and time T _{n-1 of} the previous clock time adjustment time, the date and time t _n-1 of the terminal device at the last previous clock time adjustment time, the actual current date and time T _p , and the current terminal device with time t _p, between the new shooting date T _a which is corrected with the shooting date t _a of the image taken previously reset,
T _A = T _n + (t _A −t _n ) × (T _n −T _n−1 ) / (t _n −t _n−1 )
To establish a relationship
The second correction equation is calculated between the shooting date / time t _{B of the} image shot after the reset and the corrected new shooting date / time T _{B.
T B = T P - (t} P -t B) × (T n -T n-1) / (t n -t n-1)
The information processing apparatus according to claim 6, wherein: An information processing method for an information processing apparatus,
A time information acquisition step of acquiring time information of a clock of a terminal device connected to the information processing device;
A current date and time acquisition step of acquiring a first current date and time that is the current correct date and time and a second current date and time measured by the clock of the terminal device acquired in the timing information acquisition procedure;
A clock correction step of correcting the date and time of the clock of the terminal device with the acquired first current date and time;
A clock correction history storage step for storing the first current date and time and the second current date and time used for correction in the clock correction step as a clock correction history;
An image acquisition step of acquiring a captured image from the terminal device connected to the information processing apparatus;
Compare the shooting date and time given to the image acquired in the image acquisition step with the last clock correction date and time of the terminal device stored in the clock correction history storage step, and after the image is reset A reset determination step for determining whether or not the image has been shot;
If it is determined in the reset determination step that the image was taken before the terminal device is reset, the shooting date and time of the image is corrected by a first correction formula, and the image is taken after the terminal device is reset. A shooting date and time correction step of correcting the shooting date and time of the image by a second correction formula different from the first correction formula;
An information processing method characterized by comprising: The first correction formula includes an actual reset date and time T ₀ , a terminal device clock reset date and time t ₀ , an actual date and time T _{n at} the final time adjustment time, a terminal device date and time t _n at the final time adjustment time, and the final The actual date and time T _{n-1 of} the previous clock time adjustment time, the date and time t _n-1 of the terminal device at the last previous clock time adjustment time, the actual current date and time T _p , and the current terminal device with time t _p, between the new shooting date T _a which is corrected with the shooting date t _a of the image taken previously reset,
T _A = T _n + (t _A −t _n ) × (T _n −T _n−1 ) / (t _n −t _n−1 )
To establish a relationship
The second correction equation is calculated between the shooting date / time t _{B of the} image shot after the reset and the corrected new shooting date / time T _{B.
T B = T P - (t} P -t B) × (T n -T n-1) / (t n -t n-1)
The information processing method according to claim 8, wherein:

Images