JP4474348B2 - Information processing apparatus, information processing method, program, and storage medium - Google Patents

Description

The present invention relates to an information processing apparatus, an information processing method, a program, and a storage medium. For example, the present invention relates to a technique suitable for use in searching for a recording medium in a state of being taken out from a photographing device without inserting it into the device when searching for a recording medium storing target data.

  In recent years, electronic devices having a photographing function (hereinafter referred to as photographing devices) such as digital cameras, digital video cameras, and mobile phones have been widely used. In general, image data captured by these imaging devices is recorded on a small recording medium. At present, there are many cases where one person has a plurality of photographing devices, and accordingly, the number of recording media managed by individuals is increasing.

  Usually, the recording medium is small, and the frequency of stored data is updated frequently. Further, in recent years, the capacity has also increased. However, since there is a limit on the surface space of the recording medium, there is a possibility that not all information relating to the contents of the data stored inside can be described on a label or the like affixed to the surface. For this reason, when searching for the recording medium storing the data from the contents of the stored data, eventually, the recording medium is inserted into the device, and the stored contents are displayed and confirmed one by one. I had to do such work.

  On the other hand, by holding auxiliary information (hereinafter referred to as metadata) of the data recorded on the recording medium together with the identification information of the recording medium, the contents can be confirmed one by one simply by inserting the recording medium into the device. There has been proposed a technique capable of grasping what is recorded even if it is not present (see, for example, Patent Document 1).

JP 2005-5793 A

  In the method described in Patent Document 1, in order to acquire metadata necessary for grasping the contents, an operation such as inserting a recording medium into the device is eventually required. It is possible to obtain an advantage that it is not necessary to perform step by step. However, it is necessary to further reduce the load on the user.

In view of the above-described problems, it is a first object of the present invention to make it easy to associate metadata of data recorded on a recording medium with the recording medium.
Another object of the present invention is to enable a user to search for a recording medium from metadata without imposing a heavy load on the user.
It is a third object of the present invention to make it possible to search for a recording medium from metadata using a portable photographing device.

The present invention has been made in view of the above problems, and can be solved by the following apparatus.
An information processing apparatus for searching an external storage device, a holding means in association with the metadata of the stored data stored in said external storage device, to hold the first identifier identifying the external storage device, and input means to enter the metadata as a search condition, obtaining means for obtaining a first identifier which is held in association with the metadata input as the retrieval condition in said holding means, imaging of the external storage device An imaging unit that captures an image, a recognition unit that recognizes a second identifier that identifies the external storage device from the captured image, and whether the acquired first identifier matches the recognized second identifier judging means for judging whether a notification means the matching with the determined external storage device identified by the second identifier indicates that it is the result of the search that meet the search criteria The information processing apparatus comprising: a.

  According to the present invention, an identifier for recognizing an external storage device is acquired, and when image data is recorded in the external storage device for which the identifier has been acquired, the metadata of the image data is associated with the acquired identifier. Therefore, it is possible to easily associate a lot of metadata with IDs.

  According to another aspect of the present invention, an identifier associated with the metadata that matches the input search condition is retrieved to obtain an identifier of the external storage device, and the obtained identifier of the external storage device, Since it is determined whether or not the identifier that matches the search condition matches, it is possible to search the recording medium from the metadata without imposing a great load on the user.

  Furthermore, according to another feature of the present invention, since the identifier of the external storage device is obtained from the image data of the recorded recording medium, the portable device does not have a non-contact memory tag read / write mechanism. A recording medium can be searched from metadata using a photographing device. In addition, it is possible to easily associate a large amount of metadata with an ID, and to search for a recording medium from the metadata without imposing a great load on the user.

(First embodiment)
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing an example of a hardware configuration of a recording medium management / search apparatus that functions as an information processing apparatus according to the present embodiment.
In FIG. 1, reference numeral 101 denotes a photographing apparatus that includes a lens for photographing an object and generating image data, and an image sensor such as a CCD or a CMOS sensor. Reference numeral 102 denotes an input device such as a device pointing device for a user to input data.

  Reference numeral 103 denotes a ROM that stores programs and parameters that do not need to be changed. Reference numeral 104 denotes a storage device inside the recording medium management / search apparatus. For example, the storage device includes a hard disk, a semiconductor memory, and the like, and can store, change, and delete data associated with metadata and an ID of an external storage device (recording medium).

  Reference numeral 105 denotes a work RAM when executing a program stored in the ROM 103 or the storage device 104. A CPU 106 executes the entire program stored in the ROM 103 or the storage device 104. Reference numeral 107 denotes an output device, for example, an output device such as a display or a speaker for displaying image data captured by the image capturing device 101 and a program execution result.

  Reference numeral 108 denotes an external storage device (recording medium) that can be attached to and detached from the apparatus, and is a removable external storage device that includes a hard disk, a memory card, or an optical disk, magnetism, optical card, IC card, memory card, and the like. The external storage device 108 according to the present embodiment is used to save, change, delete, and the like image data captured by the image capturing device 101 and its metadata. Reference numeral 109 denotes a bus that exchanges data by connecting the units of the devices 101 to 108.

FIG. 2 is a functional configuration diagram showing an example of a functional basic configuration of the recording media management / search apparatus according to the present embodiment. Each functional configuration in FIG. 2 is executed by the CPU 106 based on a program read from the ROM 103.
In FIG. 2, reference numeral 201 denotes a photographing unit that photographs a subject with the photographing apparatus 101 and acquires the obtained data as image data of a general format. Reference numeral 202 denotes an ID recognizing unit that recognizes an ID (identifier) by image processing from character or graphic image data attached to the recording medium acquired by the photographing unit 201.

  A data storage unit 203 records the image data acquired by the photographing unit 201 in the external storage device 108. A metadata adding unit 204 adds metadata to the image data acquired by the photographing unit 201. Reference numeral 205 denotes an ID-metadata management unit that associates the metadata provided by the metadata assignment unit 204 with the ID acquired by the ID recognition unit 202 and stores and manages the association information in the storage device 104.

  A search condition input unit 206 inputs a search condition via the input device 102 in order for the user to search for a recording medium. The search condition may be in a format that can be accepted by the next search unit 207. For example, a character string representing the metadata itself may be used, or a numerical range may be designated. For example, if the search unit 207 can analyze a natural language, a natural sentence may be used, and further, a range of metadata to be searched may be specified.

  Also, the input method is not particularly limited. For example, input using a numeric keypad, input using a pointing device and a soft keyboard or handwritten character recognition, input by voice, and the like can be considered.

  A search unit 207 searches the ID-metadata management unit 205 for an ID (identifier) associated with metadata that matches the search condition input by the search condition input unit 206. 208 indicates that a recording medium that meets the search condition is found when the ID of the recording medium acquired by the ID recognition unit 202 matches the ID searched by the search unit 207 from the image data obtained by the photographing unit 201. Is displayed on the output device 107.

Next, the operation procedure of the recording medium management / search apparatus according to the present embodiment will be described with reference to the flowcharts of FIGS. 3 to 6 are executed by the CPU 106 based on the program read from the ROM 103.
FIG. 3 is a flowchart showing an example of a procedure until the recording medium is set in the photographing apparatus prior to use of the apparatus in the present embodiment.

  First, in step S301, the imaging unit 201 captures a barcode of a recording medium and acquires barcode image data. In the present embodiment, as shown in FIG. 8, a two-dimensional code is affixed to the recording medium. By recognizing the two-dimensional code by the ID recognition unit 202, it is possible to acquire a unique ID of the recording medium.

  In FIG. 8, 801 is a recording medium (external storage device 108), and 802 is a two-dimensional barcode. However, the present invention is not limited to such a form, and it is only necessary to obtain image data that can be recognized and acquired as a unique ID by the ID recognition unit 202. For example, it may be a character string or a one-dimensional barcode. Note that the ID of the recording medium only needs to be unique for the entire recording medium 801 to be managed by the user, and simple pattern images, color information, and the like having a smaller number of patterns may be used.

  Next, in step S302, the ID recognition unit 202 recognizes the barcode image of the recording medium acquired in step S301, and acquires the ID of the recording medium 801. The acquired ID of the recording medium 801 needs to be stored in order to associate metadata, and is stored in the storage device 104.

  Next, in step S303, it is determined whether or not the recording medium 801 whose ID has been acquired in step S302 has been set in the photographing apparatus. If it is determined that the recording medium 801 is set, the process proceeds to step S304.

  If the recording medium 801 is not set as a result of the determination in step S303, the process waits until it is set and periodically checks whether the recording medium 801 is set. At this time, it is important for management of the recording medium 801 to set the recording medium 801 from which the ID is acquired. For this reason, if the corresponding recording medium 801 is not set even though the ID is recognized and the apparatus waits for a certain period of time, an instruction is displayed on the display unit 209 so as to prompt the user to set the recording medium 801. It may be. Alternatively, a similar instruction may be issued when shooting of a subject is started without setting the recording medium 801.

  Next, in step S304, it is checked whether or not the set recording medium 801 is in a state where data can be held. The recording medium 801 set in this way is hereinafter handled as the external storage device 108 in the hardware configuration diagram of FIG. 1 in order to store images and the like. Further, the data storage unit 203 in the functional configuration diagram of FIG. 2 is configured.

  FIG. 4 is a flowchart illustrating an example of a procedure for performing image capturing with the image capturing device and recording image data on the recording medium 801 in the present embodiment. In this flowchart, it is essential that the processing in steps S302 and S303 in FIG. 3 is performed.

  First, in step S <b> 401, image data acquired by the imaging unit 201 by imaging a subject is stored in the external storage device 108 by the data storage unit 203. The image data stored here may be a still image or a moving image.

  Next, in step S402, the metadata adding unit 204 acquires the metadata added to the image data acquired in step S401. In the present embodiment, the type and number of metadata are not defined, and any information that supplements captured image data may be used. Also, the method for assigning the metadata is not specified, and even if the user assigns the metadata via the input device 102, the metadata is generated from the photographing conditions and the device settings inside the device. Anyway, or both.

  Next, in step S403, the ID-metadata management unit 205 associates the metadata acquired in step S402 with the ID of the recording medium held in step S302, and stores the internal information of the recording medium management / search apparatus. Save in the storage device 104.

  FIG. 5 is a flowchart showing an example of a procedure for performing a search by inputting a search condition for searching the recording medium 801 in the present embodiment. This flowchart is based on the assumption that step S403 in FIG. 4 is performed and the ID of the recording medium 801 and the metadata of the data recorded on the recording medium 801 are stored in the storage device 104 in association with each other.

  First, in step S501, the search condition input to the search condition input unit 206 is acquired. Next, in step S502, the search unit 207 searches the search condition acquired in step S501 for an ID associated with metadata that matches the condition, and checks whether a matching ID exists. As a result of this check, if the ID is not found as a search result, the process proceeds to step S503. If an ID is found as a search result as a result of the check in step S502, the process proceeds to step S504.

  In step S503, the display unit 209 displays that there is no recording medium 801 that matches the search condition, and the process ends. In step S504, the display unit 209 displays that there is a recording medium 801 that matches the search condition, and acquires and holds the ID searched in step S502.

  FIG. 6 is a flowchart illustrating an example of a procedure for searching for a recording medium while photographing the recording medium 801 in the present embodiment. This flowchart is based on the premise that the process of step S504 in FIG. 5 is performed and an ID associated with metadata that matches the search condition is held.

  First, in step S601, the photographing unit 201 photographs the barcode 802 of the recording medium 801, and obtains image data of the photographed barcode 802. In the present embodiment, the number of recording media 801 to be photographed at the time of search is one for each search process. Next, in step S602, the ID recognition unit 202 recognizes the barcode image data of the recording medium 801 obtained in step S601, and acquires an ID.

  Next, in step S603, the search result determination unit 208 compares the ID acquired in step S602 with the ID held as the search result in step S504 in FIG. 5, and determines whether or not they are the same. To do. If it is determined that the IDs are the same, the process proceeds to step S604. If it is determined in step S603 that the ID is different, the process returns to step S601 to continue shooting.

  Note that this flowchart does not explicitly show the flow to the end state, but it ends when another operation such as transition to the normal shooting state or power OFF is performed. .

  In step S604, it is displayed on the display unit 209 that the recorded recording medium matches the search condition. In the present embodiment, the display unit 209 that displays information is the output device 107 that is a display attached to the photographing apparatus. The display can usually display data being photographed in real time. In the present embodiment, for example, the recording medium 801 being photographed is highlighted on the display as shown in FIG.

  In FIG. 9, reference numeral 901 denotes a display for displaying information, and reference numeral 902 denotes an image of the recording medium 801 being photographed. Reference numeral 903 denotes a circular frame for highlighting. In the present embodiment, the periphery of the two-dimensional code portion used for ID recognition by the ID recognition unit 202 is highlighted. Note that the highlighting method may be other than surrounding the two-dimensional code portion with a circle, surrounding it with another figure, using a color, or giving a message (character string).

(Second Embodiment)
In the first embodiment, the display unit 209 highlights those that match the search condition. In this embodiment, when a recording medium that has already been notified of notification is recognized again, information indicating “searched” is also displayed to indicate that the recording medium has already been checked. The form shown to the user will be described.

  For example, a character “Done” may be displayed like a display 1001 in FIG. However, it is needless to say that the display method does not have to be as shown in this example as long as it can be judged from the user.

  Alternatively, when multiple recording media are found as a search result, by displaying how many of the recording media have already been searched, it is indicated whether there are recording media that have not been searched yet, etc. Also good.

  For example, like the display 1002 in FIG. 10, it is only necessary to display that up to 3 of 5 have been found. Also in this case, it is needless to say that the display does not have to be as shown in this example as long as the display form can be determined by the user.

  In the first embodiment, the recording medium being photographed is highlighted on the output device 107 which is a display attached to the photographing apparatus. For example, instead of this, when a recording medium that matches the search condition is photographed, a lamp such as an LED attached to the photographing device may be lit or blinked.

  In the first and second embodiments, the search result is displayed on the display by the display unit 209. Instead, by introducing an audio output unit 701 instead of the display unit 209 as shown in FIG. 7, for example, a beep sound or a voice synthesized voice is recorded to indicate that a recording medium that matches the search condition is being shot. Etc. may be notified. In addition, other means, for example, a means for vibrating the device when a recording medium that matches the search condition is photographed may be used in combination.

The presentation to the user may include not only information for distinguishing whether or not the search condition is met, but also metadata of data recorded on the recording medium being photographed. . In particular, presenting metadata other than those given as search conditions makes it easier to determine whether the user is looking for a recording medium when there are multiple recording media that match the search conditions. The effect of.

  In the embodiment described above, the number of recording media to be photographed at the time of searching is set to one for each determination process. Alternatively, as shown in FIG. 11, a plurality of recording media may be photographed and the ID of each recording medium may be recognized from the image data. However, in this case, the ID recognition unit 202 needs to perform processing such as cutting out the barcode area of each recording medium if a barcode is used for ID recognition, for example.

  In the first embodiment, the ID and metadata association information are held by the photographing device. For example, the photographing device and the server are connected, and the ID and metadata management information is transmitted and held by the server. It may be. In this case, the ID-metadata management unit 205, the search condition input unit 206, and the search unit 207 may be arranged on the server, and the user may perform a search on the server.

  At the time of searching, the ID searched on the server is transmitted to the photographing device and held, and thereafter, the procedure may be carried out according to the procedure of the flowchart shown in FIG. Further, if it is possible to transmit and hold the ID from the server, the search is performed using another device having the photographing unit 201, the ID recognition unit 202, the search result determination unit 208, and the display unit 209. It may be. The connection between the server and the device may be any form that allows data transmission / reception, and general-purpose connection means such as USB and Ethernet (registered trademark) may be used.

  Further, the ID recognition process may be performed by the server by disposing the ID recognition unit 202 in the server instead of performing the ID recognition process by the photographing device. In this case, it is necessary for the photographing device to hold the image data of the recording medium in order for the server to recognize the ID. As this method, for example, a recording device different from the recording medium may be provided in the photographing device, the recording medium may be photographed, and the image may be held in the recording device.

  However, it is conceivable that a photographing apparatus that is currently used generally does not have another recording area as described above. In this case, there is no recording area other than the recording medium. However, since the recording medium cannot be photographed with the recording medium set, the image data of the recording medium cannot simply be held.

  As a solution to this problem, for example, a medium that is currently in use is taken out from a photographing device. Then, when replacing the next medium and starting to use, the image of the recording medium is stored on the server by photographing the extracted medium and storing the image at the head of the newly replaced medium. A method of acquiring the data can be considered. At this time, it is necessary to associate the ID recognized from the image of the recording medium with the metadata of the data recorded there.

  Since the date and time when the recording medium was photographed can be acquired, the data to be associated is not related to data recorded by the same device up to the date and time, and other recording media whose photographing date and time is older Each metadata of data may be associated with the ID. Note that since the ID recognition process cannot be performed in the photographing device, the search may be performed using another device having the photographing unit 201, the ID recognition unit 202, the search result determination unit 208, and the display unit 209. .

  When connection with a server is assumed, the addition / update input of metadata may be performed not only from the photographing device but also from the server. However, if the metadata is stored together with the data recorded on the recording media, such as managing metadata on the server or managing only the metadata replication, the server side changes the It will be reflected when the next transmission / reception with the server becomes possible.

  In the first embodiment, the recording medium 801 is photographed in step S301 in FIG. 3 and step S601 in FIG. 6, and the ID is recognized from the barcode image in steps S302 and S602. However, since it is only necessary to associate the ID of the captured image data with the ID of the device that has acquired the ID of the recording medium, it is not always necessary to perform the procedure of capturing and acquiring the ID. For example, when the ID is stored electronically inside the medium, it is not necessary to take a picture. For example, when storing an ID in a non-contact memory tag such as an RFID tag, the ID may be recognized by an RFID tag reader or the like.

  In the first embodiment, the method of acquiring the ID from the captured image of the recording medium has been described in both steps S301 and S302 in FIG. 3 and steps S601 and S602 in FIG. In addition to this example, for example, the ID indicated by the barcode attached to the surface of the recording medium may be managed so that the ID held inside the recording medium is the same. In this way, in steps S301 and S302, the ID is acquired from the ID held in the recording medium, and in steps S601 and S602, the ID is acquired from the barcode. The advantage of not being the same method is obtained.

(Another embodiment according to the present invention)
An object of the present invention is to supply a recording medium storing software program codes for realizing the functions of the first and second embodiments described above to a system or apparatus, and a computer (CPU or MPU) of the system or apparatus. Needless to say, this can also be achieved by reading and executing the program code stored in the recording medium. In this case, the program code itself read from the recording medium realizes the functions of the first and second embodiments described above, and the recording medium on which the program code is recorded constitutes the present invention. .

  As a recording medium for supplying the program code, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a DVD, or the like can be used.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an operating system (OS) running on the computer based on the instruction of the program code. It goes without saying that a case where the function of the above-described embodiment is realized by performing part or all of the actual processing and the processing is included.

  Furthermore, after the program code read from the recording medium is written to the memory provided in the function expansion board inserted into the computer or the function expansion unit connected to the computer, the function is determined based on the instruction of the program code. It goes without saying that the CPU of the expansion board or the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

  As another program supply method, a client computer browser is used to connect to an Internet homepage, and the computer program itself of the present invention or a compressed file including an automatic installation function is downloaded from the homepage to a recording medium such as a hard disk. Can also be supplied.

  It can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from a different homepage. That is, the present invention includes a WWW server that allows a plurality of users to download a program file for realizing the functional processing of the present invention on a computer.

  In addition, the program of the present invention is encrypted, stored on a recording medium such as a CD-ROM, distributed to users, and key information for decryption is downloaded from a homepage via the Internet to users who have cleared predetermined conditions. It is also possible to execute the encrypted program by using the key information and install the program on a computer.

  In addition to the functions of the above-described embodiments being realized by the computer executing the read program, the OS running on the computer based on the instructions of the program is used for the actual processing. The functions of the above-described embodiment can be realized by performing some or all of the processes.

  Furthermore, after the program read from the recording 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, the function expansion board or The CPU or the like provided in the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

It is a block diagram which shows an example of the hardware constitutions of the recording media management / search apparatus based on the 1st Embodiment of this invention. 1 is a block diagram illustrating an example of a basic configuration of a recording media management / search apparatus according to a first embodiment of the present invention. 6 is a flowchart illustrating an example of a procedure for setting a recording medium in a photographing device in the recording medium management / search apparatus according to the first embodiment of the present invention. 6 is a flowchart illustrating an example of a procedure for performing shooting and recording image data on a recording medium in the recording medium management / search apparatus according to the first embodiment of the present invention. 4 is a flowchart showing an example of a procedure for performing a search by inputting a search condition for searching for a recording medium in the recording medium management / search apparatus according to the first embodiment of the present invention. 5 is a flowchart showing an example of a procedure for searching while recording a recording medium in the recording medium management / search apparatus according to the first embodiment of the present invention. It is a block diagram which shows an example of a basic composition at the time of performing presentation of a search result by the audio | voice of the recording media management and search apparatus concerning the 2nd Embodiment of this invention. It is a figure which shows an example of the two-dimensional code affixed on the recording medium in the 1st Embodiment of this invention. It is a figure which shows an example of the search result display screen when the recording medium in the 1st Embodiment of this invention is found. It is a figure which shows the example which displayed the information which shows the search condition in the 2nd Embodiment of this invention. It is a figure which shows the example which image | photographs and records several recording media simultaneously in the 2nd Embodiment of this invention.

Explanation of symbols

101 Imaging device 102 Input device 103 ROM
104 Storage device 105 RAM
106 CPU
DESCRIPTION OF SYMBOLS 107 Output device 108 External storage device 109 Bus | bath 201 Image | photographing part 202 ID recognition part 203 Data storage part 204 Metadata provision part 205 ID-metadata management part 206 Search condition input part 207 Search part 208 Search result determination part 209 Display part

Claims (10)

An information processing apparatus for searching an external storage device,
Holding means for holding a first identifier for identifying the external storage device in association with metadata of the storage data stored in the external storage device;
Input means for inputting the metadata as a search condition;
Obtaining means for obtaining a first identifier held in association with the metadata input as the search condition in the holding means ;
Photographing means for photographing a photographed image of the external storage device;
Recognition means for recognizing a second identifier for identifying the external storage device from the captured image;
Determining means for determining whether a second identifier the recognized first identifier the acquired matches,
Notification means for notifying that the external storage device identified by the second identifier determined to match is the result of the search that matches the search condition ;
The information processing apparatus comprising: a. The recognizing means recognizes the first identifier of the external storage device from an image obtained by photographing the external storage device in advance by the photographing means before photographing the captured image;
When the storage unit stores the storage data in the external storage device, the storage unit stores the recognized first identifier in association with the metadata of the storage data.
The information processing apparatus according to claim 1. The information processing apparatus according to claim 1, wherein the data stored in the external storage device is data of a video captured by the imaging unit. The recognition unit recognizes an identifier of the external storage device by reading a character, a figure, or a color assigned to the external storage device photographed by the photographing unit from the photographed image. The information processing apparatus according to any one of claims 1 to 3. The information processing apparatus according to claim 1, wherein the notification unit highlights an external storage device as a result of the search in the captured image. 2. The notification means displays an external storage device that has already been a search result in the photographed image separately from an external storage device that has not been a search result. The information processing apparatus according to claim 5. The notification means notifies that an external storage device as a result of the search is captured in the captured image by lighting a lamp, sound, or vibration. Item 5. The information processing device according to any one of items 4 to 6. An information processing apparatus for searching for an external storage device , wherein the holding unit includes a holding step of holding a first identifier for identifying the external storage device in association with metadata of the storage data stored in the external storage device An information processing method in
An input means, an input step of inputting the metadata as a search condition,
An obtaining step for obtaining a first identifier held in association with the metadata input as the search condition in the holding unit ;
A photographing step in which the photographing means photographs a photographed image of the external storage device;
A recognition step of recognizing a second identifier for identifying the external storage device from the captured image;
A determination step of determining whether the determination means matches the acquired first identifier and the recognized second identifier ;
A notification step of notifying that the external storage device identified by the second identifier determined to match is a result of the search that meets the search condition ;
An information processing method characterized by comprising: A program for causing a computer to execute each step of the information processing method according to claim 8 . A computer-readable storage medium storing a program for causing a computer to execute each step of the information processing method according to claim 8 .

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