JP5942460B2 - Digital data mediating method and server device - Google Patents

Description

  The present invention relates to a method for mediating digital data and a server device for mediating digital data.

  There is known a digital data mediating method in which digital data such as image data of a subject that cannot be photographed by the client himself / herself is created by another person via a server device of a service provider. (Patent Document 1)

Japanese Patent No. 4239591

  However, the invention of Patent Document 1 does not guarantee that the quality of the digital data submitted by the creator of the digital data necessarily satisfies the request of the client. For example, there is a possibility that digital data with poor quality may be submitted from the creator due to camera shake or the like. Conventionally, as a countermeasure against the submission of poor quality digital data, the client will respond by requesting multiple photographers, and there is a problem such as an increase in the payment remuneration amount and a decrease in the reward setting amount It has occurred. SUMMARY OF THE INVENTION An object of the present invention is to make it possible to provide digital data according to a client's request more reliably.

Mediated process digital data which is one embodiment of the present invention, server device, creates a first reception step of receiving request information requester sends the server device, a plurality of candidates for receiving the request is a digital data a determination step of determining the authors on the basis of historical information about the history of the server apparatus, a second reception step of receiving digital data from a creator, which is determined by the determination step, the server apparatus, the second reception step Based on the received digital data, decide whether to send the received digital data to the client or to send digital data different from the received digital data to the client, and send the determined digital data to the client another server apparatus which is an embodiment of the present invention having the step, the is first to receive the request information relating to the digital data requester to request A receiving unit, which is stored in the storage unit, on the basis of a plurality of candidates for receiving the request in the history information about the history of creating digital data, and a determination unit for determining a creator, a creator determined by the determination unit Based on the digital data received by the second receiving unit that receives the digital data and the second receiving unit, the received digital data is transmitted to the requester, or digital data different from the received digital data is transmitted to the requester. And a transmitting unit that transmits the determined digital data to the requester .

  ADVANTAGE OF THE INVENTION According to this invention, the digital data along with a client's request can be provided more reliably.

It is a block diagram which shows the structure of the digital data mediation system which mounted the digital data mediation method by one Embodiment of this invention. It is a block block diagram of the communication apparatus utilized with a digital data mediation system. It is a functional block diagram of the server apparatus by one Embodiment of this invention. 3 is an example of a flowchart illustrating a digital data mediating method according to an embodiment of the present invention; 3 is an example of a flowchart illustrating a digital data mediating method according to an embodiment of the present invention; 3 is an example of a flowchart illustrating a digital data mediating method according to an embodiment of the present invention;

  In the digital data mediation system in which the digital data mediation method according to the present invention is implemented, the server device intervenes between the requester communication device and the creator communication device to mediate digital data. Digital data refers to image data, audio data, text data, and the like. For example, still image data and moving image data photographed by a digital camera or the like, voice data recorded by an IC record, text data associated therewith, and the like.

  FIG. 1 is an example of a block diagram showing a configuration of a digital data mediation system 1 including a server device according to the present invention. The digital data mediation system 1 in FIG. 1 includes a plurality of requester communication devices 2, a server device 3, and a plurality of creator communication devices 4. The requester communication device 2 and the creator communication device 4 are a personal computer, a mobile phone, a digital camera having a communication function, and the like, via a communication line network 5 implemented by an Internet line or a mobile phone line network. It is connected to the server device 3.

  The server device 3 shown in FIG. 1 includes a communication unit 31, a calendar unit 32, a storage unit 33, a data bus 34, and a control unit 35. The communication unit 31, the calendar unit 32, the storage unit 33, and the control unit 35 are connected via the data bus 34 inside the server device 3.

  The communication unit 31 is connected to the requester communication device 2 and the creator communication device 4 via the communication network 5. The calendar unit 32 manages date / time information, and transmits the current date / time information to the control unit 35 in response to a request from the control unit 35.

  The storage unit 33 is a hard disk or a flash memory. The storage unit 33 stores digital data created by the user, registered personal data of the user, map data, request history data of a creation request, and the like. The registered personal data of the user stored in the storage unit 33 includes a registration ID for identifying the user, contact information for designating a transmission destination of information, information on equipment that can be used by the user (for example, the model of the digital camera) ), User location information, creation request acceptance history, evaluation value history information (hereinafter referred to as evaluation value history) for requests accepted in the past, payment pseudo currency information, and the like.

  The control unit 35 in FIG. 1 includes a microprocessor (not shown), various peripheral circuits, RAM, ROM, and the like. The control unit 35 controls the communication unit 31, the calendar unit 32, the storage unit 33, and the like, and executes various processes as the server device 3. In FIG. 1, an image recognition processing unit 37, a database engine unit 38, and a network service server unit 39 are shown as processing examples executed by the control unit 35.

  The image processing unit 37 performs processing related to image data among digital data, and includes an image evaluation unit 36. The image evaluation unit 36 evaluates the quality of image data taken by the user of the creator communication device 4. The quality of image data evaluated by the image evaluation unit 36 includes the presence / absence of camera shake, the presence / absence of blur, the presence / absence of color skipping, and the like.

The image evaluation unit 36 calculates an evaluation value based on, for example, recognition of the contour pattern of the subject in the image data and dispersion of the luminance histogram of the image data, and evaluates the quality of the image data. Evaluation of the quality of image data based on the variance of the luminance histogram will be described. The image evaluation unit 36 calculates the luminance with high frequency and peak in the luminance histogram of the image data. When the peak of the luminance histogram corresponds to any of the following [1]-[3], the image evaluation unit 36 calculates a sample variance based on the peak. If the sample variance value is low, it is determined that the gradation expression of the image is poor, and the evaluation of the quality of the image data is lowered.
[1] When there is only one peak in the luminance histogram.
[2] A case where a plurality of luminance histogram peaks are obtained, and only one peak having a higher frequency than the other peaks exists among the peaks.
[3] A case where a plurality of peaks of the luminance histogram are obtained and these peaks are concentrated around one luminance value.

  Further, when a luminance histogram peak exists in the vicinity of the luminance corresponding to blackout (for example, 0), or when a luminance histogram peak exists in the vicinity of the luminance corresponding to overexposure (for example, 255), The image evaluation unit 36 lowers the evaluation of the quality of the image data. The determination of color skip can be performed not only based on the peak of the luminance histogram but also based on the peak of the histogram of the RGB value and the color distribution in the Lab color space.

  The image evaluation unit 36 determines the number of peaks appearing in the histogram, the frequency and rank of each peak, and the position of the peak (high frequency) pixel point in the image (for example, the position of the image). The degree of lowering the evaluation is determined depending on whether the image exists in the center or the periphery of the image.

  The image evaluation unit 36 performs Hough conversion on the image data and detects straight lines and circles from the image. Then, the degree of blurring of the image is determined using the amount of change (inclination) of the luminance in the vertical direction with respect to the detected line. When the image data is Exif data and meta information (additional information) is attached (added), the image evaluation unit 36 uses the position in the image of the AF target stored in the metainformation to store the image data. The accuracy of determining the degree of blur can be improved.

  Further, the image evaluation unit 36 detects the luminance gradient of the portion where the color is greatly changed in the hue information of the image data, subject detection by image recognition, and the gradient of the luminance change and the directionality of the gradient in the subject detection target region (for example, If the luminance change is slow in a specific direction, it is estimated that there is a possibility of camera shake), and the evaluation of the image data is changed by estimating the occurrence of blur or camera shake. Further, the image evaluation unit 36 estimates the white balance deviation based on the color distribution information of the entire image, and changes the evaluation.

  The image evaluation unit 36 quantifies the degree of evaluation by various evaluation processes of the above image data as a determination value, multiplies each determination value by a weighting coefficient, and calculates the sum of them as an evaluation value.

  The database engine unit 38 manages user registration personal data, digital data, map data, request history data, and the like stored in the storage unit 33 as a database. The network service unit 39 executes processing of the server device 3 such as a Web server or a mail server. For example, the network service unit 39 provides an input screen (Web page) for inputting request contents of a digital data creation request to the requester communication device 2 connected to the server device 3.

  FIG. 2 is a block diagram illustrating an example of the configuration of the requester communication device 2. In FIG. 2, the requester communication device 2 includes a control unit 20, an input unit 21, a storage unit 22, a display unit 23, a GPS reception unit 24, a calendar unit 25, and a communication unit 26. The creator communication device 4 has the same configuration.

  The control unit 20 includes a microprocessor, various peripheral circuits, a RAM, a ROM, and the like, and controls each part of the client communication device 2 in order to execute various processes of the client communication device 2. The processing executed by the control unit 20 includes communication processing by the communication unit 26, processing for displaying various screens such as an input screen, a confirmation screen, and a menu screen on the display unit 23, and communication apparatus for the client based on the GPS signal. 2 for calculating position information of the second position.

  The input unit 21 includes various operation members such as switches, a voice input microphone, a touch panel, and a keyboard. The user of the requester communication device 2 can make various inputs via the input unit 21. For example, information can be input to the input screen provided from the server device 3.

  The storage unit 22 is a non-volatile storage device such as a hard disk or a flash memory, and stores user personal information, information related to a creation request, various digital data, and the like. The display unit 23 is a liquid crystal display or the like. The display unit 23 can display various screens such as an input screen and a menu screen on the display screen under the control of the control unit 20.

  The GPS receiving unit 24 receives GPS signals from a plurality of GPS satellites, and transmits the received GPS signals to the control unit 20. The control unit 20 can calculate the position information of the place where the client communication device 2 exists based on GPS signals from a plurality of GPS satellites. The calculated position information is transmitted to the server device 3 via the communication unit 26 under the control of the control unit 20. The server device 3 receives the transmitted location information via the communication unit 31 and stores it as location information in the registered personal data of the user stored in the storage unit 33.

  The calendar unit 25 manages date / time information, and can transmit date / time information at the time of request in response to a request from the control unit 20. The communication unit 26 is connected to the communication line network 5 under the control of the control unit 20. The communication unit 26 is connected to the server device 3 via the communication line network 5.

  FIG. 3 is a functional block diagram illustrating an example of a service provided by the digital data mediation system 1. In FIG. 3, as a service of the digital data mediation system 1, a data creation request function 301, a data storage function 302, and a data sharing storage function 303 are illustrated. These services are provided by the server device 3.

  The data creation request function 301 is a function in which the server device 3 mediates a digital data creation request. When the creation requester transmits a digital data creation request, the server device 3 stores information on the request content in the storage unit 33. Then, the user who should be the creator is selected as a candidate according to the request content, and information on the request content is transmitted. Hereinafter, the information related to the request content is referred to as creation request information.

  When transmitting the creation request information, the server device 3 examines the success rate of each candidate for creation of digital data. The server device 3 examines the conditions under which each candidate fails to create digital data based on the acceptance history and evaluation value history stored in the storage unit 33. The server device 3 attaches a condition that does not fail the creation obtained as a result of the examination to the creation request information.

  The data creation request function 301 receives digital data created by the creator in response to the creation request, and evaluates the quality of the digital data. When the quality of the received digital data satisfies a predetermined standard, the digital data is transmitted to the creation requester. When the quality of digital data created by the creator does not satisfy a predetermined standard, a process for requesting the creator to re-create, or a process for extracting digital data that may satisfy the requested content from the storage unit 33 Etc. to obtain alternative data.

  The data storage function 302 is an online storage function that stores and stores digital data created by the user in the storage unit 33. The data storage function 302 is executed using the communication unit 31, the storage unit 33, the database engine unit 38, and the network service server unit 39 of FIG.

  The data sharing function 303 is a function that enables sharing setting of digital data stored in the storage unit 33 by the data storage function 302 or the like. The sharing setting is for setting a user who can access digital data (output digital data, download digital data, etc.). The data sharing function 303 is executed using the communication unit 31, the storage unit 33, the database engine unit 38, and the network service server unit 39 of FIG.

  When digital data is stored in the storage unit 33 by the data storage function 302, sharing setting can be performed by the data sharing function. In the data storage function 302, when storing digital data, various kinds of additional information can be added to the header portion of the file. For example, in the case of image data, information on the subject (for example, Mt. Fuji), shooting direction information (from the southwest), shooting date / time information (for example, January 1, 2011, 7:00), information on shooting equipment (for example, 10 million pixels) Shooting using the above single-lens reflex camera) can be added as additional information.

  Details of the data creation request function 301 will be described using an image data creation request as an example. The server device 3 stores the creation request information in the storage unit 33 when the creation request information is input from the requester communication device 2. The creation request information related to the image data includes information related to the subject (for example, Mt. Fuji), shooting direction information (from the southwest), shooting date / time information (for example, January 1, 2011, 6: 40-7: 30), and a reward amount. Information (for example, 10 points) and information on photographing equipment (for example, photographing using a single-lens reflex camera having 10 million pixels or more) are included. In the information relating to the photographic equipment, it may be possible to specify the lens used for photographing, the exposure, sensitivity, aperture value, focal length, etc. of the photographic equipment.

  Based on the creation request information, the server device 3 searches the registered personal data of the user stored in the storage unit 33 and extracts the user candidates who request the creation of the image data. First, the acceptance history of registration personal data creation request and equipment information stored in the storage unit 33 are searched using the request contents of the creation request information as a key, and a user having an acceptance history similar to the creation request information is searched. Extract. For example, when the request content is the above-described content, a user who has received a request in the past and photographed “Mt. Fuji” with a “single-lens reflex camera having a pixel count of 10 million pixels or more” is extracted. Hereinafter, the acceptance history adapted to the request content of the creation request information is referred to as the adaptation history.

  Next, the server device 3 refers to the evaluation history corresponding to the suitability history of each candidate, determines whether or not the evaluation value of each evaluation history is equal to or higher than a predetermined pass / fail reference value, and creates a ratio equal to or higher than the pass / fail reference value. Calculated as the success rate of each candidate for the request information. For example, candidate A has photographed Mt. Fuji 10 times in the past with a single-lens reflex camera having a pixel count of 10 million pixels or more, and the evaluation value was greater than the pass / fail reference value in 4 out of 10 shots. In this case, the success rate for the creation request information of candidate A is calculated as 40%.

  Next, the server device 3 determines whether or not the success rate for the creation request information of each candidate is a predetermined value (for example, 50%) or less, and for the candidates whose success rate is a predetermined value or less, the success rate Consider additional designation information to improve First, the server device 3 extracts those having an evaluation value equal to or higher than a pass / fail reference value from candidate matching histories having a success rate equal to or lower than a predetermined value. The server device 3 extracts common creation request information from the successful matching history. For example, in the conformance history in which the candidate A having a success rate of 40% has succeeded, it is specified that the lens X is to be used. Is added. The server device 3 transmits the creation request information and the additional designation information to the creator communication device 4 possessed by the candidate thus extracted. The candidate who received the creation request information or the like determines whether or not to accept the creation request.

  The candidate who accepted the creation request creates image data based on the creation request accepted as the creator and transmits it to the server device 3. When the creator transmits the image data, the self-evaluation value given by the creator to the image data is added. When the server device 3 receives the image data from the creator, the server device 3 uses the image evaluation unit 36 to calculate an evaluation value of the quality of the image data. At this time, the image evaluation unit 36 calculates the evaluation value in consideration of the self-evaluation value transmitted together with the image data.

  The server device 3 determines whether or not the evaluation value calculated by the image evaluation unit 36 is greater than or equal to a pass / fail reference value. If the evaluation value is equal to or higher than the acceptance / rejection reference value, it is considered that the image data has been successfully created, and the image data is transmitted to the creation requester. On the other hand, when the evaluation value is less than the pass / fail criterion value, the server device 3 considers that the creation of the image data by the creator has failed. In this case, the server apparatus 3 acquires alternative data that replaces the failed image data, and reduces the possibility that the creation requester cannot obtain the desired image data.

  The server device 3 extracts the creation request having the request content most similar to the creation request information from the request history data stored in the storage unit 33, and acquires the image data created at that time as first substitute data.

  The server device 3 also includes the content of the additional information and the content of the request for the creation request information from among the image data stored in the storage unit 33 that is set to be shared so that the requester of the creation can access. The one with the best match is acquired as the second alternative data.

  Furthermore, the server device 3 requests the creator who failed to create image data to be recreated. If the evaluation value of the image data transmitted again by the creator who failed to create is equal to or higher than the pass / fail reference value, the image data is acquired as the third alternative data. In addition, when the server apparatus 3 makes a re-creation request, it is desirable to notify the creator of the reason (color skip, hand shake, etc.) that is determined to have failed.

  The server device 3 transmits the substitute data acquired as described above and the image data whose evaluation value is less than the pass / fail reference value to the requester communication device 2. Thereby, the creation requester can obtain the desired image data even when the creator fails to create the image data.

  4 to 6 are an example of a flowchart of processing related to the data creation request function 301 executed among the requester communication device 2, the server device 3, and the creator communication device 4.

  In step S101 of FIG. 4, the control unit 20 of the requester communication device 2 controls the display unit 23 and the input unit 21 of the communication device 2 to cause the creation requester to input creation request information. In step S <b> 102, the control unit 20 of the requester communication device 2 transmits the creation request information input in step S <b> 101 to the server device 3.

  In step S <b> 103 of FIG. 4, the control unit 35 of the server device 3 receives the creation request information transmitted from the requester communication device 2 in step S <b> 102 and stores it in the storage unit 33. In step S104, the control unit 35 of the server device 3 searches the registered personal data of the user stored in the storage unit 33, and extracts users who are candidates for the creator. In step S105, the control unit 35 of the server device 3 calculates a success rate for the creation request information for each candidate extracted in step S104.

  In step S106 of FIG. 4, it is determined whether the success rate of each candidate calculated in step S105 is greater than a predetermined value. For a candidate whose success rate is equal to or less than a predetermined value, a request condition that can be used as additional designation information is examined in step S107.

  In step S108 in FIG. 4, the creation request information stored in step S103 and the additional designation information obtained as a result of the examination in step S107 are transmitted to each candidate communication device 4.

  When the candidate who has received the creation request information accepts the creation request and creates the image data based on the accepted creation request, the process of FIG. 5 is started.

  In step S <b> 201 of FIG. 5, the image data created based on the creation request by the creator who accepted the creation request is stored in the storage unit 22 of the creator communication device 4. In step S202, the control unit 20 of the creator communication device 4 causes the creator to input the self-evaluation of the image data stored in step S201. In step S203, the control unit 20 of the creator communication device 4 transmits the image data stored in step S201 and the self-evaluation information input in step S202 to the server device 3.

  In step S <b> 204 of FIG. 5, the control unit 35 of the server device 3 receives the image data and the self-evaluation information transmitted in step S <b> 203 and stores them in the storage unit 33. In step S205 of FIG. 5, the control unit 35 of the server device 3 evaluates the quality of the image data received in step S204 in the image evaluation unit 36, and calculates an evaluation value.

  In step S206 of FIG. 5, the control unit 35 of the server device 3 calculates whether or not the evaluation value calculated in step S205 is equal to or greater than a predetermined value. The control unit 35 of the server device 3 advances the process to step S207 when the evaluation value is greater than or equal to the predetermined value, and advances the process to step S208 when the evaluation value is less than the predetermined value.

  In step S207 of FIG. 5, the control unit 35 of the server device 3 considers that the creator has successfully created the image data, and sends the image data received in step S204 to the requester communication device 2 of the creation requester. Send.

  In step S208 of FIG. 5, the control unit 35 of the server device 3 regards that the creator has failed to create image data, and starts executing the process shown in FIG. 6 in order to acquire alternative data.

  In step S301 in FIG. 6, the control unit 35 of the server device 3 extracts a creation request that is most similar to the creation request information received in step S103 from the request request history data stored in the storage unit 33. . In step S302, the control unit 35 of the server device 3 acquires the image data created by the similar creation request extracted in step S302 from the storage unit 33 as first alternative data.

  In step S <b> 303 of FIG. 6, the control unit 35 of the server device 3 extracts image data accessible to the user who is the creation requester from the image data stored in the storage unit 33. In step S304, the control unit 35 of the server device 3 extracts, as second alternative data, image data whose additional information is most similar to the creation request information received in step S103 from the image data extracted in step S305.

  In step S305 in FIG. 6, the control unit 35 of the server apparatus 3 re-sends the creation request information to the creator who failed to create the image data, and requests the re-creation. In step S306, the control unit 35 of the server device 3 determines whether or not the creator has accepted the re-creation request. The control unit 35 of the server device 3 advances the process to step S307 when the creator accepts the re-creation request, and advances the process to step S311 when the creator does not accept the re-creation request.

  In step S <b> 307 of FIG. 6, the control unit 35 of the server device 3 receives the image data created by the creator who accepted the re-creation request, and stores it in the storage unit 33. In step S308, the control unit 35 of the server device 3 evaluates the quality of the re-created digital data in the image evaluation unit 36 in the same manner as in step S205 of FIG. 5, and calculates an evaluation value. In step S309, the control unit 35 of the server device 3 determines whether or not the evaluation value calculated in step S308 is equal to or greater than a predetermined value. The control unit 35 of the server device 3 advances the process to step S310 when the evaluation value is greater than or equal to the predetermined value, and advances the process to step S311 when the evaluation value is less than the predetermined value. In step S310, the control unit 35 of the server device 3 acquires the image data stored in step S307 as third alternative data.

  In step S311 of FIG. 6, the control unit 35 of the server device 3 transmits the image data received in step S204 of FIG. 5 and the substitute data acquired in FIG. 6 to the requester communication device 2 of the creation requester. . The control unit 35 of the server device 3 ends the process for the creation request information received in step S103 of FIG.

According to each embodiment explained above, the following operation effect is produced.
In the digital data mediation method according to the present invention, first, the server apparatus 3 receives the creation request information transmitted by the creation requester via the communication unit 31 (step S103 in FIG. 4). The server device 3 generates a creation request similar to the creation request information based on the received creation request information and the acceptance history or evaluation value history of the creation request included in the registered personal data of the user stored in the storage unit 33. A user who has experienced the above and has a high success rate is extracted as a candidate (steps S104 to S107 in FIG. 4). In step S108 of FIG. 4, the creation request information is transmitted to each candidate. By doing so, digital data in accordance with the request of the client can be provided more reliably.

Each of the above embodiments can be modified as follows.
The processing in FIGS. 4 to 6 has been described for the case where the digital data is image data. However, it can also be applied to digital data other than image data. For example, in the case of audio data, the recording quality evaluation value may be calculated based on the amount of noise.

  In the above embodiment, the additional designation information is executed only for candidates whose success rate for the creation request information is a predetermined value or less, but is executed for all the extracted candidates. Also good.

  The evaluation processing in the image evaluation unit 36 described in the above embodiment is merely an example, and various algorithms such as a learning algorithm such as a neural network and a hidden Markov model can be used for the evaluation. Further, even when evaluation values obtained by various evaluation processes of image data are evaluated with one evaluation value as described in the above embodiment, a plurality of evaluation axes can be provided. As the plurality of evaluation axes, for example, “gradation expression of image”, “possibility of occurrence of blur”, “possibility of occurrence of camera shake” are set as independent evaluation values, or the respective evaluation values It is conceivable that evaluation values such as accuracy, ease of recognition, artisticity, etc. are determined by changing the weighting to each evaluation value. Further, when a plurality of evaluation axes are provided, it may be acceptable that the requester specifies and requests an evaluation axis at the time of shooting request. Furthermore, it is possible to estimate an evaluation axis that the client would like based on the past request history, and to adopt an evaluation based on the evaluation axis.

  Each embodiment and various modifications described above are merely examples, and the present invention is not limited to these contents as long as the features of the invention are not impaired.

DESCRIPTION OF SYMBOLS 1 Digital data mediation system 2 Communication apparatus for requesters 3 Server apparatus 4 Communication apparatus for creators 5 Communication network 31 Communication part 32 Calendar part 33 Storage part 34 Data bus 35 Control part 36 Image evaluation part

Claims (11)

Server device, a first reception step of receiving request information requester sends,
The server device includes a determination step of a plurality of candidates for receiving the request to determine the author based on the history information about the history of creating digital data,
A second receiving step in which the server device receives digital data from the creator determined in the determining step;
Whether the server device transmits the received digital data to the requester based on the digital data received in the second receiving step or transmits digital data different from the received digital data to the requester And transmitting the determined digital data to the requester,
A method for mediating digital data, comprising: The method for mediating digital data according to claim 1,
The determination step includes
An extraction step of the server apparatus, the history that created the digital data corresponding to the request information in the past to extract candidates creator included in the history information,
The server device has a success rate calculation step of calculating a past request success rate for each candidate of the creator extracted in the extraction step based on the history information and setting it as a success rate for the request information. And
A digital data mediation method, wherein a candidate having a high success rate calculated in the success rate calculation step is set as the creator . The method for mediating digital data according to claim 1 or 2,
A pass / fail determination step in which the server device determines whether the quality of the digital data received in the second reception step is acceptable or not;
If the server device is determined to be unacceptable in the pass / fail determination step, an alternative data acquisition step of acquiring alternative data of the digital data received in the second reception step;
Digital data by the server device, at the transmitting step, the transmitted alternative data acquired in the acceptance judgment digital data is judged to be acceptable in step or the replacement data acquisition process, the requester, and wherein the Mediation method. The digital data mediation method according to claim 3, wherein
The digital data intermediation method characterized in that the alternative data acquisition step acquires digital data created according to a past request most similar to the request information received in the first reception step as alternative data. The method for mediating digital data according to claim 3 or 4,
The alternative data acquisition step acquires, as alternative data, digital data that matches the request content of the request information received in the first reception step from the digital data stored in the server device. Mediation method. The method for mediating digital data according to any one of claims 3 to 5,
Said alternative data acquisition step, and re-creation request digital data creator determined by the determining step, to acquire the digital data to which the author sends to the server device and recreated as alternative data A method for mediating digital data. A first receiver for receiving request information regarding digital data requested by the client ;
A determination unit that determines a creator based on history information related to a history of creating digital data from a plurality of candidates who receive the request stored in a storage unit ;
A second receiver for receiving digital data from the creator determined by the determiner;
Based on the digital data received by the second receiver, it is determined whether to transmit the received digital data to the client or to transmit digital data different from the received digital data to the client A transmission unit for transmitting the digital data to the requester;
A server device comprising: The server device according to claim 7,
A pass / fail judgment unit for judging pass / fail of the quality of the digital data received by the second receiving unit;
An alternative data acquisition unit that acquires alternative data of the digital data received by the first reception unit, when the pass / fail determination unit determines that it is rejected ,
And the transmission unit, the server apparatus and transmits the digital data is determined to be accepted by the acceptance judgment unit, or the alternative data obtained by the substitute data acquisition unit to the requester. The server apparatus according to claim 8, wherein
Further comprising a request information storage unit for storing a request information received by said first receiver,
The alternative data acquisition unit acquires, as alternative data, request information most similar to the request information received by the first reception unit from the request information stored in the request information storage unit. apparatus. In the server apparatus according to claim 8 or 9,
A digital data storage unit for storing digital data received by the second receiving unit;
The alternative data acquisition unit acquires, as alternative data, digital data that matches the request content of the request information received by the first reception unit from the digital data stored in the digital data storage unit. Server device. In the server apparatus as described in any one of Claims 8 to 10,
Said alternative data acquisition unit, and re-creation request digital data creator determined by the determination unit, to acquire the digital data to which the author sends to the server device and recreated as alternative data A server device as a feature.

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