JP5753986B2 - Identity confirmation support system - Google Patents

Description

  The present invention relates to an identity confirmation support system, and more specifically, to an identity confirmation support system that identifies an individual based on the state of a tooth involved in dental treatment.

  Among victims of disasters and accidents, there are “unidentified persons” who are unable to confirm their identity because there are no personal belongings or personal belongings to confirm their identity. And in a dead body that is severely damaged or has passed a long time after death, information by a family member or a third party that can lead to identity confirmation cannot be obtained, and identity confirmation becomes difficult. As one of the methods for confirming the identity in such a case, information (hereinafter referred to as the tooth status) relating to the tooth status (hereinafter referred to as the tooth status) such as the personal tooth type and the dental treatment trace recorded in advance. There is a method of confirming identity using information).

  In this method, information on the state of tooth collection that can be collected at a dental treatment opportunity that more people experience is used instead of information such as a fingerprint that has limited collection opportunities. It can also be applied to cases where fingerprints of unidentified persons cannot be collected due to burns or the like. Further, in the identity confirmation method based on the tooth status information, there is no need for the assumption that there is a person who is considered to be a close relative of an unidentified person and that the DNA of the person can be collected, as in DNA identification.

  However, in the identification method using tooth status information as a clue, the dentist must record the tooth status information and make observations on the tooth status of the unidentified person. Then, the number of dentists is overwhelmingly insufficient, and it is difficult to quickly confirm the identity. In view of this, an identification method using a dental chart (data obtained by converting an individual's tooth status into findings) as described in Non-Patent Document 1 and the like has been proposed.

  Moreover, since it is necessary to collect a lot of tooth state information in advance for quick identification, the following patent document 1 is prepared by the dental clinic every month and submitted to the examination body. It describes a method for automatically generating a dental chart from a medical fee bill (receipt).

JP 2011-107827 A

Japan Dental Association magazine, Vol. 58, no. 10, 2006-1 (P.15-P.25)

  In the conventional identification method using the tooth status information as a clue, the dental chart is substantially the tooth status information. Further, the same dentist does not necessarily make the dental chart creator and the unidentified person's findings. In particular, in the event of a large-scale disaster, many dentists with completely different skills and experiences will find their findings. Therefore, even if there is a dental chart of a certain unidentified person, there is a possibility that the contents of the findings are different from the contents of the dental chart by the doctor.

  In a large-scale disaster, the number of dentists in the disaster area alone is insufficient. The dentist itself may be affected. Therefore, dentists nationwide will make observations in the disaster area. However, the format and description of the dental chart are not completely unified, and it may not be possible to match the dental state information obtained from findings on unidentified persons with the contents of the dental chart created in advance. possible. Of course, Patent Document 1 can also efficiently create a dental chart based on a database of receipts, but the discrimination accuracy of an unidentified person depends on the skill and experience of the doctor who makes the finding. In addition, depending on the area of the dentist who performs the finding, it is impossible to collate the tooth state information created by the finding with the dental chart.

  Therefore, when confirming the identity of an unidentified person based on the tooth status information, the present invention unifies the format and description of the tooth status information, while creating the tooth status information, taking into account the skill and experience of the doctor. It is an object of the present invention to provide an identity confirmation support system in which tooth state information having the same content is created, misidentification is prevented at the time of collation, and identity can be confirmed in a shorter time.

The present invention for achieving the above object is an identity confirmation support system constituted by one or more computers,
A large number of people who may be unidentified persons are subject to verification, and the identification verification information created based on the findings on the X-ray images of the dentition in the oral cavity of the unidentified person, and each verification target person Assisting identification of the unidentified person by collating with tooth status information including treatment information based on findings on the X-ray image,
Storage means for storing the tooth status information for each of a large number of verification subjects, and control means for executing tooth status information creation processing and identity verification processing,
In the tooth state information, personal information, X-ray image data that is the X-ray image as digital data, and the treatment information are associated with identifiers individually assigned to each person to be collated. Information,
The treatment information includes information about the presence / absence of teeth in a predetermined region in the oral cavity and treatment records for a plurality of teeth belonging to a specific type, and the treatment record is specified for each of a plurality of items. Is associated with one of the two values describing whether or not each item is applicable, and only one item is included in each of the plurality of teeth belonging to the specific type. The corresponding value is associated,
In the tooth state information creation process, when information indicating the creation of tooth state information corresponding to a specific person to be collated is input, a new identifier is generated, and the X corresponding to the identifier is generated. When the radiographed image data, the personal information, and the treatment information are input, the step of associating each input information with the identifier to create the tooth state information and storing it in the storage means,
The identity verification information is information in which an identifier for a specific unidentified person is associated with at least finding information including the treatment record for one or more teeth belonging to the specific type,
In the identity verification process, when the identity verification information about an unidentified person is input, the tooth status information associated with the treatment record including the content matching the finding information in the identity verification information is identified, Outputting information including the identifier of the identified tooth state information to the user,
This is an identity confirmation support system characterized by this.

  In the identity verification support system, the information about the presence / absence of teeth in a predetermined region in the oral cavity may be the number of teeth in the predetermined region. And it is good also considering the tooth | gear of the predetermined area | region in the said oral cavity contained in the said treatment information as a total of 24 teeth on the back | inner side of the oral cavity from a canine tooth to a 3rd molar in the upper, lower, left, and right sides. Furthermore, the tooth belonging to the specific type may be at least one of a canine, a first molar, and a second molar.

  Or the teeth of the predetermined area | region in the said oral cavity contained in the said treatment information are in the innermost back | inner area | region, and 16 teeth except the canine in the area | region from the upper, lower, right and left central incisors to the 2nd premolar. It can also be set as the identification confirmation support system which is a total of 20 teeth consisting of 4 upper and lower third molars. Furthermore, the tooth belonging to the specific type may be at least one type of tooth among canine, first molar, and second molar.

The information about the presence or absence of teeth in the predetermined region in the oral cavity is information that associates the type of tooth in the region with the presence or absence thereof,
The finding information includes information that associates the type of tooth in the predetermined region with the presence or absence thereof,
In the identity verification process, when information associating the type of tooth in the predetermined area with the presence / absence thereof is input as the identity verification information for a certain unidentified person, the type of the input tooth and the presence / absence thereof From among the tooth status information including the association with the subset as a subset, the treatment record including the content corresponding to the treatment record other than the tooth in the predetermined region included in the finding information in the identity verification information corresponds It is also possible to provide an identity confirmation support system characterized by identifying attached tooth status information.

  And the teeth in the predetermined region in the oral cavity are 16 kinds of teeth in the region from the central incisor except the canine on the top, bottom, left and right to the second premolar, and the top, bottom, left and right in the deepest region in the oral cavity. It is more preferable if it is 20 types of teeth consisting of 4 types of teeth of the third molar.

In the tooth state information creation process, an identification confirmation support system may be provided that receives the input of the treatment information while displaying and outputting the X-ray image data associated with the tooth state information being created. it can. Further, in the identity verification process, the X-ray image data of the corresponding unidentified person may be included in the identity verification information being created. Further, in the identity verification process, the input of the treatment information may be accepted while displaying and outputting the X-ray image data of the corresponding unidentified person. In the tooth state information creation process, the treatment information is generated by applying an image recognition technique to the X-ray image data associated with the tooth state information being created. It is also possible.

  According to the identity confirmation support system according to the present invention, when confirming the identity of an unidentified person based on the state of a tooth, it is possible to prevent the variation and misunderstanding of the findings due to the skill and experience of the doctor, and with high accuracy, Candidates can be extracted, and identity can be confirmed in a shorter time.

It is a figure which shows the structure of the identity verification assistance system which concerns on one Example of this invention. It is a figure which shows the data structure of the tooth state information used as the process target of the said identity confirmation assistance system. It is a figure which shows the flow of the tooth state information creation process performed with the said identity confirmation assistance system. It is the schematic of the initial screen displayed on the information creation terminal which comprises the said identity confirmation assistance system in the process of the said tooth state information processing. It is the schematic of the personal information input screen displayed on the said information creation terminal in the process of the said tooth state information processing. It is the schematic of the treatment information input screen displayed on the said information creation terminal in the process of the said tooth state information processing. It is a figure which shows the other example of the input screen of the said personal information. It is a flowchart of the identity collation process performed with the said identity confirmation assistance system. It is the schematic of the finding object selection screen displayed on the identity inquiry terminal which comprises the said identity confirmation assistance system in the process of the said identity collation process. It is the schematic of the finding information input screen displayed on the said identity inquiry terminal in the process of the said identity collation process. It is the schematic of the search result screen displayed on the said identity inquiry terminal in the process of the said identity collation process.

=== Identity Confirmation Support System ===
<System configuration>
FIG. 1 is a schematic diagram of a configuration of an identity confirmation support system 1 according to an embodiment of the present invention. In this example, the system 1 includes a plurality of computers (2, 4, 6) that can communicate with each other via an information communication network (5, 7). The identity confirmation support system 1 exemplified here is the same as a general server client system. The server 2 is a control unit of the system 1, and has a database function for accumulating the tooth state information in a large-capacity storage device 3 and managing the accumulated information in an identifiable manner.

  Then, a client terminal (hereinafter referred to as an information creation terminal) 4 used when creating tooth status information, and a client terminal for executing a database search by sending the contents of findings for an unidentified person as a query to the server 2 ( Hereinafter, an identity inquiry terminal) 6 is installed to be able to communicate with the server 2 via the network (5, 7). Here, the information creation terminal 4 is installed in a facility 10 or the like belonging to an organization that manages the server 2 and is connected to the server 2 via a LAN 5 installed in the facility. Also, it is assumed that the identity inquiry terminals 6 are connected to the Internet 7 and distributed throughout the country. Of course, the information creation terminal 4 may be connected to the Internet 7, or a part of the identity inquiry terminal 6 may be connected to the same LAN 5 as the server 2.

  In the identity verification support system 1 having the above-described configuration, a general personal computer (PC) can be adopted as the information creation terminal 4. That is, the information creation terminal 4 is a computer having a user interface such as a keyboard and a mouse and various data input devices such as a memory medium reading device and a scanner, and is created by operating the information creation terminal 4. The tooth state information is finally registered in the database of the server 2.

  The information creation terminal 4 is not limited to the form connected to the same LAN 5 as the server 2, and may be individually installed in a dental clinic or the like. The server 2 may also serve as the information creation terminal 4. In such a configuration, a program for creating tooth status information is installed in the server 2, and the server 2 is connected to the server 2 based on data input from a keyboard, mouse, scanner, or the like. Tooth information is registered in the database by creating information and storing it in its own storage device 3.

  The identity inquiry terminal 6 can employ a PC in the same manner as the information creation terminal 4. And it may be installed in a predetermined place, and may be a portable computer such as a smartphone 6a or a tablet terminal 6b that can communicate with the server 2 even in a disaster or accident site. The server 2 may also be used. In any case, the identity confirmation support system 1 is provided with a user interface for inputting personal information and treatment information for creating tooth state information and inputting various information required for database search. Good.

  As described above, the hardware configuration and network configuration of the identity verification support system 1 of the present embodiment are the same as those of a general server client system and search engine that have existed before. However, the essence of the present invention is not the configuration related to the installation state and hardware of the computers (2, 4, 6) constituting the identity verification support system 1, but the information in the server 2 using the above network configuration as one embodiment. The information is stored in the processing procedure or the storage device 3 attached to the server 2. In particular, the identity verification support system 1 of the present embodiment has a feature in the contents described in the tooth status information, and due to the feature, the identity is unknown regardless of the skill and experience of the doctor who performs the finding of the unidentified person. The person's identity can be identified quickly and with a high probability. In addition, due to the features, the burden on the doctor's findings can be reduced as much as possible.

<Tooth status information>
The identification confirmation support system 1 according to the embodiment of the present invention has a great feature in the description contents of the tooth state information stored in the storage device 3. In this embodiment, assuming that a patient who received treatment at a dental clinic becomes an unidentified person in the future, tooth status information for one person is created every time treatment for one patient is completed. And the tooth state information about each patient is used as information for confirming the identity of an unidentified person. That is, a patient who has received treatment at a dental clinic is a target person to be verified with the identity of an unidentified person (a verification target person).

  In the present embodiment, the tooth state information is an X-ray image using a silver salt film obtained by photographing a dentition in the oral cavity of a person to be verified, or an image photographed using an X-ray image sensor (hereinafter referred to as an X-ray photograph). Image). However, the content of the tooth status information is different from a dental chart, etc. Regardless of the skill and experience of the doctor performing the findings, based on the X-ray image of the same patient, the same status of tooth status information is created. It is devised so that.

  FIG. 2 is a schematic diagram showing the contents of the tooth status information 20. The tooth status information 20 is data in which personal information 22 and various information (hereinafter referred to as treatment information) 23 relating to a tooth status are associated with an identifier (ID) 21 such as a serial number assigned to each person to be collated. . Further, in the tooth status information 20, an X-ray image (X-ray image data) 24 converted into digital data in a predetermined format (such as a jpeg format) is also associated with the ID 21.

  The personal information 22 includes a name, date of birth, age, sex, blood type, contact information, and the like, and is information that finally becomes “identity” of an unidentified person. The age may be automatically calculated based on the current date when the date of birth is input, or may be the age at the time when the tooth status information is created or updated.

  The treatment information 23 is information describing information on the presence / absence of teeth in a predetermined region in the oral cavity and treatment records 26 for teeth belonging to a specific type. In the present embodiment, the number of teeth 25 is used as information regarding the presence or absence of teeth in a predetermined region in the oral cavity. In addition, the number of teeth 25 is an adult and if all teeth are healthy, there are a total of 32 teeth, 8 each in the upper, lower, left, and right directions. In this embodiment, the upper and lower teeth are present in the X-ray image. The teeth in the region from the front teeth (incisors) to the second premolars, which are difficult to discern the treatment status of the overlapping teeth, and in the innermost region in the oral cavity, the probability of treatment by extraction is very high Three molars are counted.

  The canine tooth in the region from the central incisor to the second premolar has the longest crown length and can be easily distinguished from other teeth. Also, it is highly possible that it exists to the end. Therefore, canine teeth are suitable for counting. However, on the other hand, since it is easy to confirm the treatment record, the canine is excluded from the counting target in this embodiment.

  Therefore, in this example, the left and right, upper and lower third molars in the innermost region in the oral cavity were added to 16 teeth except the canine in the region from the left and right middle and upper incisors in the oral cavity to the second premolars. A total of 20 are counted. In the treatment information, only the number is described. In other words, the creator of the tooth status information does not check the tooth type (upper right third molar, lower left canine, etc.) and its presence or absence, but only counts the number of teeth, which is inaccurate due to misidentification of the type. Tooth status information is not created. Further, the burden on the confirmation work is reduced, and the time required for creating the tooth state information is shortened.

  In addition, the treatment record 26 does not describe information that may differ depending on the doctor, such as the stage of caries, and can basically be determined by only binary values (corresponding or not). In addition, the treatment status of only a limited number of teeth for which the type of tooth and the content of past treatment can be easily specified is input as the treatment record 26. In other words, in order to eliminate misidentification of the tooth type, only specific teeth that are easy to determine the type and easily obtain a uniform finding are set as the input targets of the treatment record 26.

  The specific tooth to be input in the treatment record 26 is, for example, a canine tooth having a long root or a crown, which is difficult to be removed even after a long period of time after death, and a permanent tooth which is present for the longest period unless a person is extracted after birth. When taking X-rays with the head fixed by the first molar or ear rod, which is most likely to leave a clear treatment mark, it is close to the fixed part and stable with little blurring. There are second molars, etc., which can easily obtain a clearer image. In this embodiment, canine teeth, first molars, and second molars are used as input targets for the treatment record 26. .

  As for the contents of the treatment record 26, a state that is extremely easy to specify by an X-ray image is given as an item 27, and then the state can be designated by binary as described above. Thereby, the treatment state corresponding to any of the items 27 is specified. In the present embodiment, a total of eight items 27 to which numbers 0 to 7 are assigned are defined for a total of 12 teeth of upper, lower, left and right canines, first molars, and second molars. The number and the item (number: item) are “0: missing”, that is, there is no or there is. “1: No metal / No root filling” “2: No metal / With root filling” “3: With metal / No root filling” “4: With metal / With root filling” “5: Impacted teeth” “6: Hemi Sections (only the lower jaw), “7: Pontic” and “8: Implant”. In addition, a healthy tooth corresponds to the above-mentioned "1: No metal without root". The presence of metal can be most easily confirmed in X-ray images, and restoration materials and prosthetic materials other than metal appear in various concentrations on X-ray images due to differences in X-ray transmission. There is a great possibility that findings will be divided by doctors. With regard to the presence or absence of root filling, if a radiopaque image can be confirmed in the root canal, it is possible to unify the doctor's findings by using root filling. “6: Hemisection” is a divided extraction tooth, and it may be difficult to discriminate the upper forehead molar. Therefore, in this embodiment, only the lower molar that can be easily confirmed is used. The hemisection is a treatment method for molars. In this example, only the lower teeth are targeted, so the input of “7: Hemisection” is accepted for the canines and upper teeth. You may leave it out.

For one tooth to be recorded, only one of items 0 to 8 is associated with “1” corresponding to “applicable”, and “0” of “not applicable” is assigned to the other items. It will be associated. For example, in FIG. 2, the upper left canine corresponds to only “3: with metal / without root”.

  Thus, in the present embodiment, the information provided for the identity confirmation work in the tooth status information 20 does not include a stage of caries where the findings are divided by the doctor. Certainly, the tooth state information 20 also includes X-ray image data 24. This X-ray image data 24 is used when the doctor inputs the number of teeth 25 or the treatment record 26 in the treatment information 23. It is to be referred to and does not extract complicated information (such as the stage of caries) from the X-ray image data 24.

  Thus, in the tooth status information 20 in the identity verification support system 1 of the present embodiment, the number of teeth 25 in a predetermined region in the oral cavity and a very small number of teeth belonging to a specific type regardless of the type. Only the treatment record 26 is described. Moreover, in the treatment record 26, the item 27 is classified so that only one treatment state corresponds to one tooth. Therefore, the amount of data of the tooth status information 20 for one person is overwhelmingly small, and when confirming the identity of a large number of unidentified persons, the information search time can be extremely shortened. It is also possible to minimize the burden on the doctor who makes the findings.

  Of course, the tooth status information 20 does not include information on the tooth profile whose matching accuracy is reduced due to damage in the event of an accident or disaster or deterioration with time. The item 27 that can be discriminated at a glance is only described in binary, and there is almost no variation in the findings, and the reliability of the information search result is extremely high. In addition, as an item of the treatment record, a treatment in which only the tooth root is treated can be considered. In other words, the items of the treatment record only need to be discriminable by finding on the X-ray image. For example, a denture stabilizer such as a root face plate, an attachment, or an OP anchor, which is applied to a tooth root, can be considered.

  Of course, the number of teeth 25 and the contents of the item 27 in the treatment information 23 described above can be set as appropriate. However, considering the burden on the doctor at the time of the finding, the number of teeth may not be too large, and even if it is a frustrated binary, there should be no item whose contents of determination are divided by the doctor. It can be said that the numbers and items shown here are appropriate.

=== Creation and Registration of Tooth Status Information ===
In this embodiment, the information creation terminal 4 and the identity inquiry terminal 6 are installed with a dedicated program having a user interface environment for supporting the creation and registration of the tooth status information 20 and the identity confirmation work by the doctor. It shall be.

  First, in order to confirm the identity of an unidentified person, it is premised that the tooth status information 20 about a person who is a candidate for an unidentified person is registered in the database. Therefore, the tooth state information 20 for the person to be collated is created by using the person who has obtained consent for the provision of the tooth state information 20 as the person to be collated. Here, the procedure of registering the patient's tooth state information 20 in the database is described as an example, with a patient who goes to a general dental clinic as a person to be collated.

<Preparation of tooth status information>
First, a patient undergoing dental treatment agrees with the creation and registration of the tooth status information 20 through a dental clinic or the like, and when the patient finishes treatment at the clinic, X-ray imaging. In this embodiment, panoramic dental (full jaw) photography is used. Then, a set of a paper containing personal information about the patient and an X-ray image, and the set is an organization (the police dentist association, dental university forensic medicine, which is the administration parent of the identification confirmation work by the identification confirmation support system 1) Send it to the classroom, police, etc. (hereinafter referred to as the management organization) by mail. An X-ray image captured using an X-ray image sensor is not recorded as an optically visualized “thing”, but as digital data. A medium on which the line image data is recorded and a printout of the data are sent. Of course, even a silver salt film may be captured by a scanner and converted into electronic data, and the converted data may be set as a personal information sheet. When sending X-ray image data, it is also possible to send personal information as text data and upload the set to a file attached to an e-mail or a server.

<Creation and registration of tooth status information>
Next, a procedure for creating the tooth status information 20 based on the above set and registering it in the database will be described. FIG. 3 is a flowchart of processing and work related to the creation of the tooth status information 20, and FIGS. 4 to 6 are work areas displayed on the display of the information creation terminal 4 when the tooth status information 20 is created and registered. An example of the screen (hereinafter, screen) is shown. In addition, an information creation terminal 4 is installed in a management organization facility (FIG. 1, reference numeral 10) to which the set is sent, and a dedicated doctor is provided in the facility 10 to create tooth status information. (Hereinafter referred to as information creator) is waiting. Then, the information creator operates the information creation terminal 4 to create the tooth state information 20 having the contents shown in FIG. 2 based on the X-ray image and personal information set received from a doctor in a personal clinic. And

  The information creation terminal 4 is equipped with a dedicated program for creating tooth status information while communicating with the server 2, and when the information creator operates the information creation terminal 4 to start the program, FIG. The initial screen 30 shown is displayed (FIG. 3, s1). On the initial screen 30, buttons (31 to 33) for allowing the information creator to select a work to be performed are arranged. Here, the mouse cursor M is moved to the “create new” button 33 and the instruction is given (clicked). When the information creation terminal 4 receives the instruction, the information creation terminal 4 transmits information to that effect to the server 2 (s2 → s3), and the server 2 generates a new ID such as a serial number (s4). 4 is returned (s5). In addition to the “new creation” button 31, the initial screen 30 includes “update / confirmation” that is instructed when performing operations for confirming or changing the contents of the created tooth status information 20. ”Button 32 and a“ delete ”button 33 for deleting the tooth status information 20 of the person to be collated when the person to be collated ceases to be a target for collation.

  When the ID is returned from the server 2, the information creation terminal 4 displays a screen (personal information input screen) 40 for inputting personal information about the person to be verified shown in FIG. 5 (s6). In the displayed personal information input screen 40, the returned ID is already input in the predetermined column 41, and the text box 42 for inputting the name, the date of birth, the year, month, day Enter the list down box 43 for entering separately, the radio button 44 for specifying the sex of either gender, the radio button 45a for specifying either the blood type Rh type + or-, and the ABO type A list-down box 45b for inputting a contact information, a text box 46 for inputting a contact address, an X-ray image data specification field 47, and the like. As for the X-ray image data, when the above set including the X-ray image of the silver salt film and the personal information description sheet is sent to the management organization, the information creator selects the X-ray image. It is assumed that X-ray image data is created by reading with a scanner and stored with an appropriate file name in an appropriate storage location (folder or the like) of a storage device of the information creation terminal 4. Then, the information creator instructs the “reference” button 48 to display the hierarchical structure of the folder in the storage device of the information creation terminal 4 and designates the corresponding X-ray image data file. As a result, the file name is input to the corresponding input field 47.

  Then, necessary information is input or specified on the personal information input screen 40 (s7), and if all the information has been input, the "Next" button 49 is instructed. Upon receipt of this instruction, the information creation terminal 4 displays the treatment information input screen 50 shown in FIG. 6 (s7, s8 → s9 → s10).

  The treatment information input screen 50 displays the ID 51, the previously specified X-ray image 52 and its file name 53, and the information creator views the X-ray image 52 displayed on the same screen 50. However, any of the items 0 to 7 described above can be selected for the number of predetermined teeth in the treatment information and each tooth to be recorded. The illustrated treatment information input screen 50 includes a list down box 54 for inputting the number of teeth from 0 to 24, and 8 to 0 to 7 described above for each of a plurality of teeth belonging to a predetermined type. A list down box 55 for selecting any one of the types of treatment items is included. There is also an “enlarge” button 56 for enlarging the X-ray image 52. When this button 56 is designated, an arbitrary place of the X-ray image 52 is displayed in the display area of the X-ray image 52. The display can be enlarged. A new screen area may be generated on the display, and an enlarged image may be displayed on the screen. As a result, the information creator can enlarge the X-ray image 52 displayed as necessary to check the treatment state of a predetermined type of tooth in more detail. When the treatment information has been input on this screen 50, the “Create” button 57 is designated. Upon receipt of this instruction, the information creation terminal 4 creates new tooth state information including the ID, personal information, X-ray image data, and treatment information, and transmits the tooth state information to the server 2 (s11). → s12 → s13). When the tooth status information is transmitted from the information creation terminal 4, the server 2 stores it in the storage device 3, and executes various programs included in the ID and the tooth status information 20 by executing a program related to the database function. Based on this, management is performed so that specific tooth status information 20 can be extracted. That is, the tooth state information 20 is registered in the database.

  The creation of the tooth status information 20 is not limited to the above-described procedure. For example, the X-ray image data may be created only while the personal information input screen 40 is being displayed without creating the X-ray image data in advance so as not to mistake the X-ray image data with those of other verification target persons. . 7A and 7B exemplify the transition state of the screen displayed on the information creation terminal 4 when the tooth state information is created by other procedures. First, the personal information input screen 60 shown in FIG. 7A is displayed instead of the personal information input screen 40 shown in FIG. The screen 60 is provided with text boxes (62, 65), list-down boxes (63, 65b), radio buttons (64, 65a), etc. for inputting personal information, as in FIG. . However, there is no X-ray image designation field 47 or “reference” button 48 for searching for the storage location of the X-ray image data, and instead, a message instructing the scanner to read the X-ray image. A sentence 67 and a “read” button 68 for receiving an image capture instruction are provided.

  Then, when the information creator sets an X-ray image on the scanner connected to the information creation terminal 4 and instructs this “read” button 68, the information creation terminal 4 controls the scanner to display the set image. Read. Then, the read X-ray image is converted into X-ray image data in a predetermined format. Further, the same file name as the ID is generated for the X-ray image data, and the file is stored in a predetermined storage area. In this example, when the X-ray image data is stored, a confirmation screen 70 including the file name 73 and the X-ray image 72 is displayed as shown in FIG. The creator is asked to confirm the ID 71, the X-ray image 72 and the file name 73. Then, when the “OK” button 74 for confirmation is instructed, the treatment information input screen 50 shown in FIG. 6 is displayed.

=== Procedure for confirming identity ===
Next, using the identity verification support system 1 of the present embodiment, an operation for confirming the identity of a person who has been involved in an accident or disaster and has become unidentified, or information processing for identifying the identity in the system 1 is performed. The flow will be described. Here, it is assumed that an X-ray imaging apparatus and an identity inquiry terminal 6 are installed in a housing facility for an unidentified person.

<Preparation for identification>
First, X-ray imaging is performed in the oral cavity of an unidentified person in the same manner as preparation preparation of tooth state information. That is, panoramic dental photography. Here, it is assumed that the photographed image has already been converted into X-ray photographed image data, and that the image data can be displayed on the identity inquiry terminal 6. Further, it is assumed that an ID is assigned to each unidentified person, and the association between the ID of the unknown person (hereinafter, unknown person ID) and the X-ray image data has been completed. Note that the unknown person ID may be a simple character string, a camp and a refuge position in the camp. In any case, if the unknown person ID is designated, the location of the human body of the unidentified person and the X-ray image data can be identified. In addition, some of the personal information confirmed in advance, such as biometric information (gender, blood type), name and contact fragment confirmed from personal belongings, etc. If there is, the information may be associated with the unknown person ID as personal information of the unidentified person.

  The unknown person ID and the radiographic image data associated therewith may be already stored in the storage device 3 attached to the server 2 or may be stored in the storage device of the identity inquiry terminal 6. . It may be a storage device such as NAS (Network Attached Storage) connected to a LAN installed in a camp for unidentified persons. In any case, if an unknown person ID is designated at the identity inquiry terminal 6, the corresponding X-ray image data is prepared so as to be viewable as an X-ray image at the terminal 6. Of course, the X-ray image may not be prepared as digital data, and the identification confirmation operation may be performed by operating the identity inquiry terminal 6 while performing the observation while viewing the X-ray image of the silver halide photograph.

<Findings and identity verification process>
FIG. 8 is a flowchart showing a procedure for confirming the identity of the unidentified person based on the findings of the unidentified person, the contents of information processing in the identity confirmation support system 1 associated with the procedure, and the like. 9 to 12 are displayed on the identity inquiry terminal 6 in the process of performing an identity confirmation operation by operating a identity inquiry terminal 6 by a doctor or the like (hereinafter referred to as an “observer”) who makes an opinion on an unidentified person. It is the schematic of a screen.

  First, when the finding person starts the identity inquiry terminal 6, the finding target person selecting screen 80 for selecting an unknown person who is in charge of finding shown in FIG. 9 is displayed (s21 in FIG. 8). In this screen, a gender 82 and a blood type 83 are displayed in a list in association with an unknown person ID 81 for an unknown person already known at the preparation stage up to the finding. Also displayed is a state 84 as to whether or not the inquiry has already been completed after the findings have been made. Then, for an unknown person ID for which an inquiry operation has not been completed, a button 85 for enabling selection is displayed in the display column for that ID. If there are a large number of unidentified persons, the observation subject selection screen 80 is prepared over a plurality of pages, and when the “return” button 86 or the “next” button 87 on the screen 80 is designated, The finding subject selection screen 80 corresponding to the pages before and after the finding subject selection screen 80 is displayed. The finder then instructs the button 85 arranged in the unknown person ID column 81 of the finding target person selection screen 80 on an appropriate page, and selects an unidentified person who is the subject of the finding (s21).

  When the unknown person ID to be found is specified in this manner, the identity inquiry terminal 6 reads X-ray image data corresponding to the ID from a predetermined storage unit (s22 → s23), and is shown in FIG. Similarly to the treatment information 23 in the tooth status information 20, the number of teeth in a predetermined region in the oral cavity and information specifying any of the above eight items for each of a plurality of teeth belonging to a specific type A finding information input screen 90 for inputting information including the following (hereinafter referred to as finding information) is displayed (s24).

  The finding information input screen 90 includes an unknown person ID 91, an X-ray image 92 corresponding to the specified unknown person ID and its file name 93, and the number of teeth in a predetermined region in the oral cavity (here, 24 from the canine to the back). A list down box 94 for inputting a book to be counted), and specifying any of the above-mentioned predetermined eight items for each of a plurality of teeth (upper and lower left and right canines and first molars) belonging to a specific type And a list down box 95 for the purpose. Further, in this example, the screen 90 also describes the gender 96 and blood type 97 of the corresponding unidentified person who is known in advance. In the example shown in the figure, the male is described, but if the gender is unknown, this is described.

  Then, the observer performs an observation while magnifying the image 92 while viewing the X-ray image 92 displayed on the screen 90 and instructing an “enlarge” button 98 as necessary. The number of teeth in a predetermined region in the oral cavity is counted, the number is designated from the list down box 94, and a treatment state for a tooth belonging to a specific type to be found is selected from the list down box 95. Thereby, the treatment state for each of the teeth to be found is uniquely determined.

  In this example, the content of the finding information is substantially the same as the treatment information 23 in the tooth status information 20, but the tooth that is the finding target of the treatment status is missing or damaged due to an accident or disaster. There may be cases. Corresponding to such a case, in the tooth status information 20, it was possible to select from 0 to 8 items as the treatment status. However, in the finding information, for example, an item such as “8: indistinguishable” may be provided. Good. And what is necessary is just to collate with the tooth state information 20 only about the tooth | gear with which the treatment state in any one of the items of 0-8 is matched.

  As for the number of teeth, if it is difficult to determine whether the number of teeth counted by observation is actually the same as the original number or if it is missing and the number is decreasing, for the time being, If the number of existing teeth is input, tooth status information associated with a number smaller than the number of teeth counted in the findings can be excluded from verification.

  In this manner, when the finding person inputs finding information for a certain unknown person ID without omission, the “inquiry” button 99 on the finding information input screen 90 is instructed. Upon receipt of this instruction, the identity inquiry terminal 6 creates identity inquiry information including the unknown person ID, the corresponding partial personal information that is currently known, and the finding information. (S26 → s27, s28). The server 2 searches the database based on the identity inquiry information transmitted from the identity inquiry terminal 6 (s29), and if there is no corresponding tooth status information, transmits information to that effect (s30 → s37). The terminal 6 displays a screen notifying that there is no corresponding information (s38).

  Here, an example in which one corresponding tooth state information 20 is extracted will be described. The server 2 returns the corresponding tooth status information 20 and the unknown person ID that is the origin of the search to the identity inquiry terminal 6 (s30 → s31), and the identity inquiry terminal 6 shows the search result as shown in FIG. In this way, the search result screen 100 for comparing the characteristics of the unidentified person and the searched person to be collated is displayed (s32). Specifically, the identity verification terminal 6 is associated with the unknown person ID 101 sent from the server 2 (X-ray image data, previously known blood type, gender, belongings) A part of a character string that seems to be a full name) is taken out from the storage device in which they are stored, and an unknown person ID 101, an X-ray image 102 of an unidentified person, and an individual are displayed on the search result screen 100. A part of information 103 is displayed, the ID 104 of the person to be collated in the tooth status information 20 sent from the server 2, the X-ray image 105 obtained by decoding the X-ray image data 24, and personal information Are displayed on the same search result screen 100. Thereby, the observer can confirm whether or not the identity of the unidentified person is that of the person to be collated, by comparing various information about the unidentified person and the person to be collated. . As a result of the identity confirmation, if it is determined that there is a high probability that the observer is the same person, the “save” button 107 on this screen 100 is instructed. In response to this instruction, the identity inquiry terminal 6 transmits a set of the unknown person ID and the ID of the person to be verified to the server 2 (s33 → s34). The server 2 stores this set in the storage device 3 as information of an unidentified person whose identity has been confirmed (s35).

  In addition, when this storage instruction is given, the identity inquiry terminal 6 attaches a code indicating identity confirmation to the unknown person ID. As a result, in the finding object selection screen 80 shown in FIG. 9, “Done” is displayed in the inquiry column 84 for the unknown person ID. Of course, since the inquiry is completed even if the identity is not confirmed, when the “inquiry” button 99 is instructed on the finding information input screen 90 shown in FIG. A reference numeral may be attached to display the inquiry “completed” for the corresponding unknown person ID on the finding object selection screen 80 shown in FIG. 9.

<About search results>
By the way, the tooth status information 20 corresponding to the identity inquiry information for one unidentified person is not limited to one, and a plurality of tooth status information 20 is often extracted as a result of database search. In such a case, the ID 21 and a part of the personal information 22 (gender, age, blood type, etc.) and the unknown person ID that is the origin of the search are identified for the corresponding plurality of tooth status information 20. What is necessary is just to return to the inquiry terminal 6. Then, the identity inquiry terminal 6 displays a list of a part of the IDs and personal information 22 for the plurality of tooth status information 20 and the observer wants to examine the specific tooth status information 20 in the list in more detail. A function for accepting an instruction to specify a specific ID from the list may be included. Then, if a certain ID is specified, the identity inquiry terminal 6 sends the ID to the server 2 to return all the corresponding tooth status information 20 and displays the tooth status information 20 on the screen. do it.

=== Reliability of information search results ===
As described above, in order to confirm the identity of an unidentified person, the existing tooth status information 20 and the finding information to be collated with it do not contain any uncertain information such as the stage of caries. Even if multiple doctors make observations on X-ray images of the same person to be collated, tooth status information with the same content is always created, and similarly, multiple doctors have X-rays of one unidentified person. Even if the findings are performed on the photographed image, the findings information having the same content is created. Therefore, even if a plurality of tooth state information is extracted by a database search based on certain identity inquiry information, the tooth state of the unidentified person corresponding to the queried identity inquiry information is included in the extracted plurality of tooth state information. Information will almost certainly exist. Therefore, even if a plurality of tooth state information is extracted, the identity of an unidentified person can be confirmed without fail by confirming the identity using a more advanced identity confirmation technique. That is, there is almost no possibility of misidentifying the identity.

=== Other Embodiments ===
<About teeth to be counted>
In the above-described embodiment, the number of teeth in the tooth information is a count target for which it is difficult to confirm the treatment state in the X-ray image. Then, treatment information is associated with specific teeth other than the counting target. As a result, information on teeth in substantially the entire region of the oral cavity can be obtained, although the number and number of treatment records are different information. Needless to say, the present invention is not limited to the above-described embodiment, and teeth for which the treatment state can be easily confirmed in the X-ray image may be counted. For example, it is easy to confirm the total number of 24 teeth on the back side of the oral cavity from the canine to the third molar on the upper, lower, left and right sides. Moreover, it is good also as matching treatment information with the specific tooth which is easy to confirm a treatment state among the teeth of the count object. For example, canine teeth and first molars. In any case, the identity of an unidentified person can be identified quickly and accurately by performing a verification process based on information on the presence or absence of teeth in a predetermined region in the oral cavity and treatment records and findings on specific types of teeth. Can be confirmed.

<About tooth status information and identification information>
In the above embodiment, the tooth information includes, as the treatment information, the number of teeth in a predetermined region in the oral cavity and the treatment record for a specific type of tooth. In addition, the identification information also includes the number of teeth in a predetermined region and the treatment status for a specific type of tooth as finding information. Not limited to this example, instead of the number of teeth in a predetermined region in the oral cavity, information that associates the type of tooth in the predetermined region with its presence may be included in the tooth information or finding information. In the identity verification process, for the teeth other than the predetermined type of teeth, the treatment record in the tooth information and the treatment state in the finding information may be verified.

  In the above-described embodiment, the possibility that the upper and lower front teeth overlap in the X-ray image is taken into account. However, in order to perform highly accurate identification verification, it is natural that the type of tooth and its presence / absence are determined. It is better to verify your identity based on this. Therefore, as tooth status information, the presence / absence of teeth in a predetermined region in the oral cavity may be associated with each type, and treatment records may be associated with teeth outside the region. Therefore, the information search based on the type of tooth in the predetermined area and the presence / absence of the information is more appropriate as a search result than in the above embodiment in which the information search is performed based on the number of teeth in the predetermined area. In addition, the possibility that the narrowed tooth information includes the tooth information of the unidentified person who is the subject of the finding becomes high.

  For example, in the region from the upper and lower left and right central incisors to the second premolars, except for canines with a long crown length, the upper and lower teeth overlap in the findings, and the treatment state cannot be specified However, it is possible to confirm the type and presence / absence. Further, the third molar in the innermost region in the oral cavity is likely to be extracted as a treatment, and individual differences are likely to appear greatly in the presence or absence thereof. Therefore, the presence or absence of this third molar is also associated. It is thought that the accuracy of identification will be further improved. And for teeth outside the predetermined area, that is, teeth that are not subject to confirmation of presence or absence, the identity of the unidentified person can be more reliably identified by comparing the treatment record with the treatment status based on the findings, and as a result, identity verification The processing speed is increased and the verification probability is also increased.

  Of course, there may be a case where a tooth that should have been in a predetermined area in the oral cavity is missing due to an accident or disaster. If it is a subset of information about the type and presence / absence thereof, the tooth information can be extracted as an object of identity verification processing. That is, it is not necessary that the correspondence between the tooth type and the presence / absence of the tooth in the predetermined area in the tooth information and the finding information match. If there is a tooth that is present in certain findings information but not in the tooth information, this tooth information will be excluded from the identity verification process at that time, but even if there is no type of tooth in certain findings information If there are other types of teeth and it is described in a certain tooth information that there are other types of teeth, this tooth information is subject to identity verification processing.

  Then, by comparing the treatment state for the teeth other than the predetermined region in the finding information with the treatment record for the same tooth in the tooth information, the identity of the unidentified person can be identified with a very high probability. In some cases, the tooth that is the target of finding the treatment state may be missing. In this case, the treatment state based on the finding and the treatment record in the tooth information may be collated only for the existing tooth. That is, if there is a record of treatment records in the tooth information in which there is a record of the treatment state in a certain finding information, the tooth information may be extracted as a collation result. In this way, by performing a primary search based on the type and presence / absence of a specific tooth and using the tooth information extracted based on the primary search result as a target of the secondary search, finally, one tooth information can be obtained. Even if is not specified, the tooth information extracted by the secondary search should contain the tooth information of the unidentified person with a very high probability.

<Database search processing>
The flow of a series of information processing from when the identity inquiry terminal 6 sends the identity inquiry information to be a query to the server 2, the server 2 searches the database, and returns the search result to the identity inquiry terminal 6. It is not limited to. That is, there are many more efficient database search methods. For example, if the sex of an unidentified person can be specified, the tooth status information to be collated becomes 1/2 when the number of men and women is almost the same. If the unidentified person is a child, for example, any number of processes related to search efficiency can be considered, such as, for example, tooth status information corresponding to an age of 15 years or younger. In addition, if survival and location can be confirmed in advance, information to that effect may be included in the tooth status information. As a result, only the tooth status information of the person to be verified whose location and survival are unconfirmed can be set as the object to be verified.

  In addition, in the case of performing a database search based on the presence or absence of the above tooth type, the corresponding tooth state information is extracted based on the tooth type and presence, and the treatment state based on the findings for the extracted tooth state information And the treatment record in the tooth status information may be collated. In any case, the present invention is not characterized by the database search method, but is characterized by the data structure of the tooth state information used for the search.

<User interface environment>
Screens displayed on the information creation terminal 4 and the identity inquiry terminal 6, and the terminals (4, 4) for creating the tooth status information 20 using these terminals (4, 6) and for confirming the identity The operation environment (user interface environment) of 6) is not limited to the above embodiment, and the user interface environment can be designed appropriately. That is, the screen transition in the process of creating the screen configuration, the tooth status information 20 and the identity verification information may be set as appropriate.

  Further, the data that is the origin of the screen displayed on the information creation terminal 4 or the identity inquiry terminal 6 may be transmitted from the server 2. That is, the server 2 is provided with a WWW server function, and a browser is mounted on the information creation terminal 4 and the identity inquiry terminal 6. Then, in addition to the tooth status information 20, the storage device 3 of the server 2 stores hypertext, images, and the like that are the origin of the generation of the Web page provided by this WWW server function. That is, it is only necessary to include well-known form data input and transmission functions on the screen displayed on the information creation terminal 4 and the identity inquiry terminal 6 during the creation and registration of the tooth status information 20 or the identity confirmation work.

<Generation of treatment information>
In the above embodiment, the treatment information 23 in the tooth status information 20 is input while the information creator looks at the X-ray image. Not limited to this example, image recognition technology is applied to an X-ray image, the number of teeth in a predetermined region in the oral cavity is counted, teeth belonging to a predetermined type are identified from the dentition, and the teeth On the other hand, the treatment state for each item may be identified by image recognition. And finally, you may make it produce | generate the treatment information 23 in the tooth status information 20 shown in FIG.

  The present invention can be used for the purpose of confirming the identity of a person who has become unidentified due to a disaster or accident.

1 Identity confirmation support system, 2 servers, 3 storage devices attached to the server,
4 Client terminal (information creation terminal), 5 LAN,
6, 6a, 6b Client terminal (identity inquiry terminal), 7 Internet,
20 Tooth status information, 21 ID, 22 Personal information, 23 Treatment information,
24 radiographic image data, 25 number of teeth, 26 treatment information indicating information,
27 Items about treatment status, 30 initial screen, 40 personal information input screen,
50 treatment information input screen, 52, 72, 92, 102, 105 X-ray image,
30 initial screen, 40,60 personal information input screen, 50 treatment information input screen,
80 finding target selection screen, 90 finding information input screen, 100 search result screen

Claims (12)

An identity verification support system composed of one or more computers,
A large number of people who may be unidentified persons are subject to verification, and the identification verification information created based on the findings on the X-ray images of the dentition in the oral cavity of the unidentified person, and each verification target person Assisting identification of the unidentified person by collating with tooth status information including treatment information based on findings on the X-ray image,
Storage means for storing the tooth status information for each of a large number of verification subjects, and control means for executing tooth status information creation processing and identity verification processing,
In the tooth state information, personal information, X-ray image data that is the X-ray image as digital data, and the treatment information are associated with identifiers individually assigned to each person to be collated. Information,
The treatment information includes information about the presence / absence of teeth in a predetermined region in the oral cavity and treatment records for a plurality of teeth belonging to a specific type, and the treatment record is specified for each of a plurality of items. Is associated with one of the two values describing whether or not each item is applicable, and only one item is included in each of the plurality of teeth belonging to the specific type. The corresponding value is associated,
In the tooth state information creation process, when information indicating the creation of tooth state information corresponding to a specific person to be collated is input, a new identifier is generated, and the X corresponding to the identifier is generated. When the radiographed image data, the personal information, and the treatment information are input, the step of associating each input information with the identifier to create the tooth state information and storing it in the storage means,
The identity verification information is information in which an identifier for a specific unidentified person is associated with at least finding information including the treatment record for one or more teeth belonging to the specific type,
In the identity verification process, when the identity verification information about an unidentified person is input, the tooth status information associated with the treatment record including the content matching the finding information in the identity verification information is identified, Outputting information including the identifier of the identified tooth state information to the user,
An identity confirmation support system characterized by that.   2. The identity confirmation support system according to claim 1, wherein the information about the presence / absence of teeth in a predetermined region in the oral cavity is the number of teeth in the predetermined region.   3. The identity according to claim 2, wherein the teeth in the predetermined region in the oral cavity included in the treatment information are a total of 24 teeth on the back side of the oral cavity from the canine tooth to the third molar tooth on the upper, lower, left and right sides. Confirmation support system.   4. The identity verification support system according to claim 3, wherein the tooth belonging to the specific type is at least one of a canine, a first molar, and a second molar.   In Claim 2, the tooth | gear of the predetermined area | region in the said oral cavity contained in the said treatment information has 16 teeth except the canine in the area | region from upper, lower, right and left central incisors to the 2nd premolar, and the innermost back in the oral cavity. An identification confirmation support system comprising a total of 20 teeth comprising four upper and lower third molars in the region.   6. The identity verification support system according to claim 5, wherein the tooth belonging to the specific type is at least one of a canine, a first molar, and a second molar. In claim 1,
Information about the presence or absence of teeth in the predetermined region in the oral cavity is information that associates the type of teeth in the region with the presence or absence thereof,
The finding information includes information that associates the type of tooth in the predetermined region with the presence or absence thereof,
In the identity verification process, when information associating the type of tooth in the predetermined area with the presence / absence thereof is input as the identity verification information for a certain unidentified person, the type of the input tooth and the presence / absence thereof From among the tooth status information including the association with the subset as a subset, the treatment record including the content corresponding to the treatment record other than the tooth in the predetermined region included in the finding information in the identity verification information corresponds An identification confirmation support system characterized by identifying attached tooth status information.   In Claim 7, the teeth in the predetermined region in the oral cavity are 16 kinds of teeth in the region from the central incisor except the upper, lower, left and right canines to the second premolars, and the upper and lower in the innermost region in the oral cavity. An identity confirmation support system comprising 20 types of teeth comprising four types of teeth of left and right third molars. In any one of Claims 1-8, in the said tooth state information creation process, the input of the said treatment information is received, displaying and outputting the said X-ray imaging image data matched with the tooth state information being created. An identity confirmation support system.   10. The identity verification support system according to claim 9, wherein, in the identity verification process, the X-ray image data of an unidentified person is included in the identity verification information being created. The identity verification support system according to claim 10, wherein in the identity verification process, input of the treatment information is received while displaying and outputting the X-ray image data of a corresponding unidentified person. 12. The tooth state information creation process according to claim 1, wherein the treatment information is generated by applying an image recognition technique to the X-ray image data associated with the tooth state information being created. An identity confirmation support system characterized by