JP2008146174A - Image management device and image management method, and control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image management device capable of automatically creating shared image information among users knowing each other, and notifying the users of the renewal of the shared image information at appropriate timing. <P>SOLUTION: This device comprises a group information management means for managing the plurality of users as a group, a user's image management means for managing image information stored by the users belonging to the group, and a shared image management means for managing the shared image information as image information shared among the users belonging to the group. This device performs first narrowing for extracting the shared image information from the image information managed by the user's image management means, and performs second narrowing for determining whether or not to notify a designated contact of the updated information when the shared image management means is updated by the shared image of the first narrowing. The shared image information extracted by the first narrowing is notified to the users as the updated information of the shared image at the timing determined by the second narrowing. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image management apparatus that manages image information, an image management method thereof, and a control program for executing the image management method.

  With the spread of the Internet in recent years, it has been performed to share images taken with a digital camera with a large number of people. Specifically, the image provider uploads an image captured using a digital camera from a personal computer or directly from the digital camera to a disk space on the service provider's Web server. Then, the image can be registered as an online album.

  As a technique for sharing an online album on such a Web server, there is a method of notifying the location (URL) and password of the album by e-mail between users who want to share.

  Also, a prior art for reducing such an album creation load is disclosed in, for example, Patent Document 1. Patent Document 1 proposes a technique for automatically creating an album for each fixed place by uploading shooting time data and shot position data to a server in addition to image data taken by a digital camera.

On the other hand, Web sites that provide SNS (social networking site) services that form a community on the network and exchange diaries and messages are becoming common. In addition, services that link these communities with online albums are also being offered.
JP 2002-183742 A

  However, when sharing an image among users in the network community as described above, it is preferable to share only with users who are interested in the shared image information.

  For example, in the case of sharing a photographed image at a concert starring a specific person among several users belonging to the network community, the following is assumed. That is, the user who is interested in the main performer of the concert makes this photographed image a target of sharing, but the user who is not interested in the photographed image does not want to share. In order to share, if album information (URL, password) is simply notified to all of the several users by e-mail, the user who does not need the photographed image is also notified. .

  In order to avoid this, the photographer must create a personal album dedicated to the photographer, and then share the album information (URL, password) by mail notification only to the user who wants to share. For this reason, the burden on the photographer who wants to share images increases, and automation of sharing has been desired.

  On the other hand, in Patent Document 1 described above, an album is automatically created for each fixed place based on shooting time data and shooting position data, but means for notifying information on the automatically created album is disclosed. Is not disclosed. When sharing with users on a network community such as SNS, which is not necessarily composed only of users who share images, sharing is also performed to unnecessary users.

  In view of the above-described conventional problems, the present invention automatically creates shared image information among known users and can update the shared image information to the user at an appropriate timing. An object is to provide an image management method and a control program.

  In order to achieve the above object, the present invention is an image management apparatus for managing image information, and a group information management unit for managing a plurality of users as a group, and a user for managing image information stored by users belonging to the group The shared image information is extracted from the image management means, the shared image management means for managing the shared image information that is the image information shared among the users belonging to the group, and the image information managed by the user image management means. A first narrowing-down means, and a second narrowing-down means for determining whether to notify update information to a designated contact when the shared image management means is updated with the shared image of the first narrowing-down means The shared image management means extracts the shared image information extracted by the first narrowing-down means at the decision timing of the second narrowing-down means. A shared image update notification means for notifying to the user as information, characterized by comprising.

  The present invention also provides group information management means for managing a plurality of users as a group, user image management means for managing image information stored by users belonging to the group, and images shared among users belonging to the group. A shared image management means for managing shared image information as information, and an image management method for an image management apparatus for managing image information, wherein the shared image information is managed from the image information managed by the user image management means. A first narrowing-down process for extracting the second image, and a second determination for determining whether to notify update information to a designated contact when the shared image management means is updated with the shared image of the first narrowing-down process The shared image management means extracts the shared image information extracted in the narrowing-down process and the first narrowing-down process at the determination timing of the second narrowing-down process. A shared image update notification step of notifying the user as update information, characterized in that it has.

  The present invention also provides group information management means for managing a plurality of users as a group, user image management means for managing image information stored by users belonging to the group, and images shared among users belonging to the group. A computer-readable control program for executing an image management method of an image management apparatus for managing image information, comprising shared image management means for managing shared image information that is information A first narrowing step for extracting the shared image information from the image information managed by the image managing means, and when the shared image managing means is updated with the shared image in the first narrowing step, to a specified contact address A second refinement step for determining whether or not to notify update information; and the shared refinement extracted by the first refinement step. Image information, a decision timing of the second narrowing step, the shared image update notification step of notifying the user as update information of the shared image management means, characterized by comprising.

  According to the present invention, image information saved by users belonging to a group can be automatically shared, and update notification can be sent to the user according to the shared image information. As a result, it is possible to effectively share an image while preventing unnecessary update notifications.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<System configuration>
FIG. 1 is a block diagram showing a configuration of an image management system including an image management apparatus according to an embodiment of the present invention.

  This image management system includes a Web server 2000 that performs communication processing with a client computer 1000, and a file server 3000 that manages various data including image information. The Web server 2000 includes a client request processing unit 2010 that processes requests such as image browsing and image storage from the client computer 1000, and an update notification unit 2020 that notifies the client of an update of shared image information described later. Yes.

  The file server 3000 also includes a user data management unit 3100 that manages data for each individual user. Furthermore, the file server 3000 includes a shared image management unit 3200 that manages images shared among a plurality of users, and a group information management unit 3300 that manages information (group information) of groups composed of a plurality of users. .

  The user data management unit 3100 includes a user image management unit 3110, a user HTML data management unit 3120, an image sharing determination unit 3130, a saved image group feature amount management unit 3140, and a user-dependent data management unit 3150. .

  The user image management unit 3110 receives an image storage processing request from the client request processing unit 2010 and stores it as image data for the client. The user HTML data management unit 3120 receives an update request from the user image management unit 3110, manages the image data in an HTML format that can respond to the Web request, and provides the HTML data to the client request processing unit 2010. Further, the image sharing determination unit 3130 receives the image information stored from the user image management unit 3110 and determines whether to share an image by means described later. The stored image group feature amount management unit 3140 receives the image information stored from the user image management unit 3110 and manages the feature amounts extracted from all the images stored in the user image management unit 3110. The user-dependent data management unit 3150 manages destination information such as a mail address when notifying the user of information and a user ID assigned to each user.

  The shared image management unit 3200 includes a shared image attribute information management unit 3210, a shared image management unit (shared album) 3220, a shared image HTML data management unit 3230, and a shared information notification determination unit 3240.

  The shared image attribute information management unit 3210 manages the attribute information of the shared image that has already been shared, and the shared image management unit 3220 uses the image information received from the user image management unit 3110 of each user as a shared image. save. The shared image HTML data management unit 3230 manages the image data as an HTML format that can respond to the Web request from the image information stored in the shared image management unit 3220, and provides the HTML data to the client request processing unit 2010. The shared information notification determination unit 3240 determines whether to notify the update information of the shared image HTML data management unit to users who belong to the group other than the image information provider. The shared image management unit 3200 includes identification information (not shown) corresponding to a plurality of shared image management IDs managed by a group information management unit 3300 described later.

  The group information management unit 3300 includes a group user ID management unit 3310 and a shared image data creation unit 3320. The group user ID management unit 3310 manages a plurality of users as a group using the user ID managed by the user-dependent data management unit 3150 as a key. The shared image data creation unit 3320 newly creates shared image data among a plurality of users managed by the group user ID management unit 3310.

<Management information of group user ID management unit>
Next, information managed by the group user ID management unit 3310 in FIG. 1 will be described with reference to FIG.

  FIG. 2 is a table showing the contents of the group user ID management table according to the present embodiment.

  In the group information, correspondence between a plurality of groups and users constituting the group is managed in a table 1040.

  In FIG. 2, reference numeral 1010 denotes a group ID column indicating an ID for each group. In FIG. 2, M groups (gr001 to grM) are managed. Reference numeral 1020 denotes a user ID column indicating the ID of a user included in each group of the group ID column 1010, and gr001 indicates that the group includes four users (usr001, usr002, usr003, usr005). .

  Reference numeral 1030 denotes a shared image management unit ID column indicating an ID of a shared image management unit used between users included in each group of the group ID column 1010. In addition, two types of shared image management units (share001, share002) are used between users included in gr001.

<Outline of Characteristic Operations in this Embodiment>
Next, the outline of the characteristic operation in the present embodiment will be described with reference to FIGS.

  FIG. 3 is a schematic diagram showing an outline of characteristic processing in the present embodiment.

  In the user image management unit 3110, for example, photographed images provided by the users A to D belonging to a group of acquaintances are uploaded from the digital cameras A1 and C1 and the personal computers B1 and D1 (P1 in FIG. 3), and personal Registered as albums A2 to D2.

  Corresponding to each of the personal albums A2 to D2, the stored image group feature amount management unit 3140 of the user image management unit 3110 manages one or more pieces of feature amount information A3 to D3 extracted from the captured image. ing. The user-dependent data management unit 3150 manages contact information A4 to D4 to the user such as a mail address.

  The image sharing determination unit 3130 then captures, from the captured images of the personal albums A2 to D2, a captured image that is already shared and stored in the shared image management unit 3220, for example, a shooting time and a shooting location that are similar to each other. Detect images. Then, the captured image registered as a shared album in the shared image management unit 3220 is updated. As described above, in order to automatically share the images, the captured images are narrowed down (first narrowing down) from the captured images of the personal albums A2 to D2 (P2 in FIG. 3).

  Next, the feature amount is extracted from the newly shared photographed image in the shared album and compared with the feature amount of all the photographed images in the personal album. Based on the result, it is determined whether or not update information is notified to a designated contact. In this way, in order to automatically share images, the captured images are further narrowed (second narrowing down) from the captured images in the shared album (P3 in FIG. 3).

  Thereafter, the shared image information extracted by the first narrowing P2 is notified to the user as update information of the shared album at the notification timing of the second narrowing P3 (P4 in FIG. 3).

  Next, as an example of a specific use form of the present embodiment, a use form at an athletic meet will be described.

  FIG. 4 is a schematic diagram showing a specific usage pattern of the present embodiment.

  Images taken at the athletic meet are stored in each personal album, and scenes at the same time and in the same place are automatically stored in the shared album as sharing targets.

  For example, the user A uploaded the photographed image from the digital camera A1 to the file server 3000 and saved it in the personal album A2 on the day of the athletic meet. This photographed image is a photographing scene of “first grader race (user A's child)” and “first grade ball holder (including user A's child)”. At this time, the images of the athletic meet are not stored in the personal albums A2 to D2 of the users A to D who are still members of the group. Therefore, the photographed image of user A is not a sharing target, and no notification is given to each member (users B to D) of the group regarding the photographed image.

  User B uploaded the photographed image from the personal computer B1 to the file server 3000 and stored it in the personal album B2 three days after the athletic meet. This photographed image is a photographing scene of “first grader race (user B's child)” and “first grader ball holder (including each of the users B and A's children)”. At this time, since the photographed image at the athletic meet is stored in the personal album of the user A, the photographed image of the user B becomes a sharing target (first narrowing down). Moreover, since the photographed image of the user B includes an image of the child of the user A, an update notification is made to the user A for the photographed image (second narrowing down).

  User C uploaded a photographed image from the digital camera C1 to the file server 3000 and stored it in the personal album C2 one week after the athletic meet. This photographed image is a photographing scene of “3rd grader race (child of user C)”. At this time, since the captured images at the athletic meet are stored in the personal albums of the users A and B, the captured images of the user C are to be shared (first narrowing down). However, the captured image of user C does not include images of children of users A and B. Therefore, since the update information is not significant as shared information for the users A and B, the update notification to the users A and B is not performed for this captured image (second narrowing).

  User D uploaded the photographed image from the personal computer D1 to the file server 3000 and stored it in the personal album D2 two weeks after the athletic meet. This photographed image is a photographing scene of “first grader race (user D's child)” and “first grader ball holder (including each child of users D, B, and A)”. At this time, since the captured images at the athletic meet are stored in the personal albums of the users A, B, and C, the captured images of the user D are to be shared (first narrowing down). Moreover, since the photographed image of the user D includes images of the children of the users A and B, an update notification is given to the users A and B for the photographed images (second narrowing).

<Processing of Image Management System According to this Embodiment>
Hereinafter, processing of the image management system according to the present embodiment will be described with reference to the flowcharts of FIGS. Note that the program code for executing the processing of these flowcharts is stored in the memory of the file server 3000 and the Web server 2000 and executed by these CPUs.

(A) Image Saving Process and Sharing Process of Image Management System FIGS. 5 and 6 are flowcharts showing the image saving process and the sharing process in the present embodiment.

  First, in step S1000, image storage processing of the image sharing apparatus of the present embodiment is started. In the next step S1010, the client request processing unit 2010 detects whether there is an image storage request from the user. If a request is generated, the process proceeds to step S1020.

  In step S1020, image information corresponding to the image storage request in step 1 is stored in the user image management unit 3110. In step S1030, the user HTML data management unit 3120 updates the user-specific image browsing HTML file. In step S1040, the file updated in step 1030 is provided to the client request processing unit 2010 in response to an image browsing request from the user.

  In the subsequent step S1050, the saved image group feature quantity management unit 3140 extracts and manages the feature quantity from the image group saved so far by the user managed by the user image management unit 3110. As this feature amount, for example, using subject recognition technology, the face feature amount of the subject person with the highest number of subjects from the saved image group, the face feature amount of the top few people with the highest number of times, or all of the feature features in the saved image group There are facial features of the subject person.

  In step S1060, the image sharing determination unit 3130 determines whether the image saved by the user is shared between the users. In step S1100, if it is determined in step S1100 that the image is to be added as a shared image to the shared image management unit 3200, the process proceeds to step S1110. Otherwise, the process proceeds to step S1210.

  In step S1110, the image newly determined to be shared in the above step is stored in the shared image management unit 3220. In step S1120, shared image HTML data management unit 3230 updates the image browsing HTML file for the shared image.

  In step S1140, the shared information notification determination unit 3240 determines whether to notify each user that the shared image browsing HTML has been updated. In step S1150, if the determination target user needs to be notified as a result of step S1140, the process proceeds to step S1160. Otherwise, the process proceeds to step S1170.

  In step S1160, the registered mail address information is acquired from the user-dependent data management unit 3150 of the target user, and the update notification unit 2020 notifies the target user of the URL information storing the shared image browsing HTML. In step S1170, with reference to the group user ID management unit 3310 managed by the group information management unit 3300, whether or not steps S1140 to S1160 have been processed for all users in the group including the user who provided the newly saved image. Check. If the process is completed for all users, the process proceeds to step S1300, and the image storage process ends.

  If it is determined in step S1100 that the image is not an image to be added as a shared image to the existing shared image management unit 3200, the process proceeds to step S1210. In step S1210, the group user ID management unit 3310 managed by the group information management unit 3300 is referred to, and the user ID included in the group to which the user who saved the image belongs is acquired. In step S1220, an image whose attribute value such as a captured time and a shooting location approximates the stored image is searched for from the image stored in the user image management unit 3110 corresponding to the user ID acquired in step S1210.

  In step S1230, it is checked whether there is an image determined to have the same attribute value as a result of searching in step S1220. If there is, the process proceeds to step S1240, and if not, the process proceeds to step S1300, and the image storage process is terminated. In step S1240, a new shared image management unit 3200 that manages the image determined to have the same attribute value in step S1230 and the stored image as a shared image is created, and the process proceeds to step S1300, where the image storage process ends. To do.

(B) Details of Storage Image Sharing Determination Process FIG. 7 is a flowchart showing details of the storage image sharing determination process in step S1060 of FIG.

  First, in step S2000, an image sharing determination process is started. In the next step S2010, information on the shooting location and shooting time is acquired as the attribute of the image newly stored in the user image management unit 3110. In subsequent step S2020, the user ID management table in FIG. 2 is referred to, and a list of shared image management unit IDs (1030) used by the group including the user who stored the image is acquired.

  In step S2030, the sharing determination flag is set to 'N', and steps S2040 to S2070 are repeated. In step S2040, the existing attribute information is acquired from the shared image attribute information management unit 3210 included in the shared image management unit 3200 corresponding to the shared image management unit ID acquired in step S2020.

  In step S2050, the attribute information acquired in step S2010 is compared with the attribute information acquired in step S2040. If it is determined that the attribute information is the same, for example, within a certain threshold range, sharing determination is performed in step S2060. Set the flag to 'Y'. In the next step S2070, if all of the list of shared image management units acquired in step S2020 is checked to see if the sharing determination flag is 'Y', the repetition process ends, and the image sharing determination process ends in step S2080.

(C) Details of Shared Information Notification Determination Process FIG. 8 is a flowchart showing details of the shared information notification determination process for each user in step S1140 of FIG.

  First, in step S3000, an image sharing information notification determination process is started. In the next step S3010, a feature amount is extracted from the newly shared image. For example, as in step S1050, the feature amount uses the face feature amount of the subject of the saved image using subject recognition technology. In step S3020, the group information management unit 3300 is referenced to obtain a group ID including the user ID of the user who saved the shared image. In subsequent step S3030, the notification determination list is initialized, and the following steps S3040 to S3070 are repeated.

  In step S3040, the feature amount is acquired from the stored image group feature amount management unit 3140 in the user data management unit 3100 corresponding to the target user, with one of the users included in the group ID acquired in step S3020 as the target user. Then, the feature amount is compared with the feature amount of the saved image acquired in step S3010.

  In the next step S3050, it is determined whether or not to update the target user based on the comparison result in step S3040. At this time, for example, when the user wants to collect images of the same subject, such as shooting at a concert, if the feature amount approximates as a comparison result in step S3040, it is determined that the target user is notified in this step. Also, for example, when it is desired to collect photographed images for a large number of people in order to create a commemorative album on a school trip, if the feature amount is not approximated as a comparison result in step S3040, the target user is notified in this step. Judge that it is a thing.

  In the subsequent step S3060, an e-mail address is acquired as contact information from the user-dependent data management unit 3150 of the target user and added to the notification determination list. In step S3070, when the notification determination is checked for all groups of users acquired in step S3020, the repetitive processing is ended, and in step S3080, the image sharing information notification determination processing is ended.

<Advantages of this embodiment>
As described above, in the present embodiment, the user can automatically share an image within a group constructed in the server only by storing the image information in a personal album dedicated to the user in the file server 3000. it can. In addition, since the shared information update notification is made to the user according to the shared image information, reception of the update notification unnecessary for each user can be prevented, and the image can be shared effectively.

  In addition, the objective of this invention is achieved by performing the following processes. That is, a storage medium that records a program code of software that realizes the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU, MPU, etc.) of the system or apparatus is stored in the storage medium. This is the process of reading the code.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the program code and the storage medium storing the program code constitute the present invention.

  Moreover, the following can be used as a storage medium for supplying the program code. For example, floppy (registered trademark) disk, hard disk, magneto-optical disk, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW, magnetic tape, nonvolatile memory card, ROM or the like. Alternatively, the program code may be downloaded via a network.

  Further, the present invention includes a case where the function of the above-described embodiment is realized by executing the program code read by the computer. In addition, an OS (operating system) running on the computer performs part or all of the actual processing based on an instruction of the program code, and the functions of the above-described embodiments are realized by the processing. Is also included.

 Furthermore, a case where the functions of the above-described embodiment are realized by the following processing is also included in the present invention. That is, the program code read from the storage medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer. Thereafter, based on the instruction of the program code, the CPU or the like provided in the function expansion board or function expansion unit performs part or all of the actual processing.

1 is a block diagram illustrating a configuration of an image management system including an image management apparatus according to an embodiment of the present invention. It is a table figure which shows the content of the group user ID management table which concerns on embodiment. It is a schematic diagram which shows the outline of the characteristic process in embodiment. It is a schematic diagram which shows the specific utilization form of embodiment. It is a flowchart which shows the image preservation | save process and sharing process in embodiment. It is a flowchart which shows the image preservation | save process and sharing process in embodiment. It is a flowchart which shows the detail of sharing judgment processing of a preserved image. It is a flowchart which shows the detail of a shared information notification determination process to each user.

Explanation of symbols

1000 Client computer 2000 Web server 3000 File server 2010 Client request processing unit 2020 Update notification unit 3100 User data management unit 3110 User image management unit 3200 Shared image management unit 3300 Group information management unit 3120 User HTML data management unit 3130 Image sharing determination Unit 3140 saved image group feature amount management unit 3150 user-dependent data management unit 3210 shared image attribute information management unit 3220 shared image management unit 3230 shared image HTML data management unit 3240 shared information notification determination unit

Claims (11)

An image management device for managing image information,
A group information management means for managing a plurality of users as a group;
User image management means for managing image information stored by users belonging to the group;
Shared image management means for managing shared image information that is image information shared between users belonging to the group;
First narrowing-down means for extracting the shared image information from image information managed by the user image management means;
Second narrowing means for determining whether to notify update information to a designated contact when the shared image management means is updated by the shared image of the first narrowing means;
A shared image update notifying means for notifying the shared image information extracted by the first narrowing means to the user as update information of the shared image managing means at the determination timing of the second narrowing means;
An image management apparatus comprising:   The image management apparatus according to claim 1, wherein the user image management unit includes a user-stored image feature amount management unit that extracts and manages the feature amount information from the managed image information.   3. The image management apparatus according to claim 1, wherein the user image management unit includes a user contact management unit that manages contact information used for notification to a user by the shared image update notification unit. .   When the attribute information of the image information stored in the user image management unit approximates the attribute information of the image information managed by the shared image management unit, the first narrowing-down unit converts the image information into the shared image The image management apparatus according to claim 1, wherein the image management apparatus is added to image information managed by a management unit. The first narrowing means is
When the image information stored in the user image management unit is not managed by the shared image management unit, or the attribute information of the image information does not approximate the attribute information of the image information managed by the shared image management unit The user information management means of another user belonging to the same group as the user who stored the image information in the user image management means with reference to the group information management means, and attribute information of the image information When the attribute information of the image information stored by the user image management unit of another user is approximate, the image information and the image information stored by the user image management unit are newly shared image management unit. The image management apparatus according to claim 1, wherein the image management apparatus stores the image management apparatus.   6. The image management apparatus according to claim 4, wherein the attribute information of the image information managed by the user image management unit and the shared image management unit includes shooting time information and shooting position information. The second narrowing means has means for extracting feature amount information from the image information added to the shared image management means by the first narrowing means,
The group information including the user who provided the additional image information is acquired with reference to the group information management unit, the feature amount information included in the user stored image feature amount management unit of another user belonging to the group, and the additional image 7. The feature amount extracted from the information is compared, and when the comparison result approximates, the shared image update notification unit notifies the update information to the other user. The image management apparatus described in 1. The second narrowing means has means for extracting feature amount information from the image information added to the shared image management means by the first narrowing means,
The group information including the user who provided the additional image information is acquired with reference to the group information management unit, the feature amount information included in the user stored image feature amount management unit of another user belonging to the group, and the additional image 7. The feature amount information extracted from the information is compared, and when the comparison result does not approximate, the shared image update notification means notifies the update information to the other user. An image management apparatus according to claim 1.   9. The image management apparatus according to claim 7, wherein the feature amount information includes recognition information of a person and a landscape of the subject image. Group information management means for managing a plurality of users as a group, user image management means for managing image information stored by users belonging to the group, and shared image information that is image information shared among users belonging to the group An image management method of an image management apparatus for managing image information, comprising:
A first narrowing-down process for extracting the shared image information from the image information managed by the user image management means;
A second narrowing step for determining whether to notify update information to a designated contact when the shared image management means is updated with the shared image in the first narrowing step;
A shared image update notifying step of notifying the user of the shared image information extracted in the first narrowing step as update information of the shared image management means at the determination timing of the second narrowing step;
An image management method for an image management apparatus, comprising: Group information management means for managing a plurality of users as a group, user image management means for managing image information stored by users belonging to the group, and shared image information that is image information shared among users belonging to the group A computer-readable control program for executing an image management method of an image management apparatus for managing image information,
A first narrowing-down step of extracting the shared image information from image information managed by the user image management means;
A second narrowing step for determining whether to notify update information to a designated contact when the shared image management means is updated by the shared image in the first narrowing step;
A shared image update notifying step of notifying the user of the shared image information extracted in the first narrowing step as update information of the shared image management means at the determination timing of the second narrowing step;
A control program characterized by comprising.

Images