JP2011138178A - Light emitting device, suspicious person detection system and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain: a light emitting device capable of easily and accurately detecting whether a holder is a person of authorized admission or not; and a suspicious person detection system capable of easily and accurately detecting whether an attending person is of the authorized admission or not. <P>SOLUTION: CPU 50B controls a light emitting element 50A to emit light when the holder indicated by the holder information (ID information) stored in ROM 50D in advance and the authorized person indicated by the authorized person information received via a communication interface 50E match, and it controls the light emitting element 50A not to emit light when they do not match. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a light emitting device, a suspicious person detection system, and a program.

  Conventionally, as a technique that can be applied to prevent a suspicious person from entering a building or the like, Patent Document 1 filed by the present applicant includes a technique that suppresses the occurrence of an obstruction to a legitimate visitor and the privacy of the legitimate visitor. In order to prevent suspicious persons from entering the building at a high level while including the warning level, a warning level that executes a warning process and a warning level that does not execute a warning process are included. Specific information for specifying processing to be executed for each of the plurality of warning levels is stored in advance, and the vicinity of the position of the door provided at the position that passes when entering the building, and the building An input means provided outside the building for entering warning level information indicating the warning level according to the situation at the time when entering the building by a regular visitor to the building; When the warning level information is input by the input unit, the specific information corresponding to the warning level indicated by the warning level information is read from the storage unit, and the process specified by the specific information is executed And a suspicious person admission prevention system comprising means.

  In this system, while detecting the position of a person existing in an area to be monitored from an image obtained by a monitoring camera or the like, there is an RFID (Radio Frequency Identification) tag possessed by a legitimate visitor. The position is detected by radio waves emitted from the RFID tag, and based on the distance between the two detected positions, it is determined whether or not a person existing in the region to be monitored possesses the RFID tag.

JP 2007-179491 A

  However, in the technique disclosed in Patent Document 1, as described above, the position where the RFID tag is present is detected by radio waves emitted from the RFID tag, and therefore the position can be detected with high accuracy. However, as a result, there is a problem that it is impossible to detect with high accuracy whether or not a visitor has an RFID tag.

  In addition, the technique disclosed in Patent Document 1 requires two systems: a system that detects the position of a person using a surveillance camera and a system that detects the position of the RFID tag using radio waves emitted from the RFID tag. There is a problem that a complicated system configuration is necessary.

  The present invention has been made to solve the above-described problems, and provides a light-emitting device that can easily and accurately detect whether or not the owner is an authorized person permitted to enter. A first object is to provide a suspicious person detection system and program that can easily and accurately detect whether or not a visitor is the permitter.

  In order to achieve the first object, the light-emitting device according to claim 1 is a light-emitting device configured to be capable of switching between light emission and non-light emission, and a holder storage device that stores in advance owner information indicating the owner. Receiving means for receiving permitter information indicating a permitter permitted to enter the area to be detected by the suspicious person, and possession indicated by the owner information stored in the owner storage means A determination means for determining whether or not the authorized person indicated by the authorized person information received by the receiving means matches, and the light emitting means to emit light when the determination means determines that they match. Control means for controlling the light emitting means to emit no light when the judgment means judges that they do not match.

  According to the light emitting device of the first aspect, the owner information indicating the owner is stored in advance by the owner storage means. The above-mentioned holder storage means includes a RAM (Random Access Memory), an EEPROM (Electrically Erasable and Programmable Read Only Memory), a semiconductor storage element such as a flash EEPROM (Flash EEPROM), a portable recording medium such as a flexible disk, A fixed recording medium such as a hard disk is included.

  Here, in the present invention, the permitter information indicating the permitter permitted to enter the area to be detected by the suspicious person is received by the receiving means.

  In the present invention, whether the holder indicated by the holder information stored in the holder storage means matches the permitter indicated by the permitter information received by the receiving means by the judging means. It is determined whether or not the light emitting means emits light when the control means determines that they match, and the light emitting means does not emit light when the determination means determines that they do not match. It is controlled to

  That is, in the present invention, when the holder indicated by the pre-stored owner information and the permitter indicated by the received permitter information match, the light emitting means is controlled to emit light, and when they do not match The light emitting means is controlled so as not to emit light, and as a result, the position of the light emitting point of the light emitting means can be detected with high accuracy from the image obtained by photographing by the photographing means such as a camera. It is possible to detect whether the holder is a permitted person permitted to enter or not with higher accuracy than when using a system that detects the position of the RFID tag using such radio waves. I have to. Further, in the present invention, since it is not necessary to use a system for detecting the position of the RFID tag by radio waves emitted from the RFID tag, it is easily detected whether or not the owner is a permitted person permitted to enter. be able to.

  As described above, according to the light emitting device of the first aspect, the light emitting means emits light when the holder indicated by the previously stored owner information matches the authorized person indicated by the received authorized person information. If the light emission means does not emit light when they do not match, it is possible to easily and accurately detect whether the holder is a permitted person permitted to enter. .

  It goes without saying that a person who does not have the light emitting device according to the present invention can detect that the person is not an authorized person by not detecting the light emitting point.

  In the present invention, as in the invention described in claim 2, the light emitting means may emit infrared light. Thereby, even when the light-emitting device according to the present invention is carried in a pocket of clothes, it can be easily and accurately detected whether or not the holder is a permitted person permitted to enter. . Here, it is preferable to apply the infrared light having a frequency that allows easy transmission of clothing such as far-infrared light.

  In the present invention, as in the invention described in claim 3, the holder storage means, the reception means, the determination means, and the control means may be constituted by an IC tag. As a result, the light emitting device according to the present invention can be configured using IC tags that are currently widely used. As a result, the present invention can be realized at low cost. Note that the IC tag is sometimes referred to as an RFID tag, a wireless tag, an ID tag, an electromagnetic induction tag, or the like. In this specification, these are collectively referred to as an IC tag.

  Further, according to the present invention, as in the fourth aspect of the present invention, when the control unit controls the light emitting unit to emit light, the owner information can be specified in advance. You may control to light-emit the said light emission means in the light emission state. Thereby, the holder of the light emitting device according to the present invention can be specified.

  On the other hand, in order to achieve the second object, a suspicious person detection system according to claim 5 includes a light emitting device according to any one of claims 1 to 4 and a region to be detected by a suspicious person. A photographing device for photographing the inside, permitter storage means preliminarily storing permitter information indicating a permitter permitted to enter the area, and permitter information stored in the permitter storage means. From the transmitting device that transmits within the area, the specifying means for specifying the position of the person and the position of the light emitting point by the light emitting device from the image taken by the photographing apparatus, and the position of the person specified by the specifying means in advance Position determining means for determining whether or not the position of the light emitting point specified by the specifying means is included within a predetermined range, and issuing a warning when it is determined not to be included by the position determining means And it includes a tell means.

  According to the suspicious person detection system according to claim 5, the imaging device captures an image of the area to be detected by the suspicious person, while the transmission device captures the area stored in advance in the authorized person storage unit. Permitr information indicating permitters allowed to enter is transmitted in the area. The permitter storage means includes the semiconductor storage element, the portable recording medium, the fixed recording medium, and an external storage device provided in a server computer connected to a network.

  On the other hand, in the light emitting device of the present invention, when the permitter information is received by the receiving means, and the holder indicated by the prestored owner information matches the permitter indicated by the received permitter information. While the light emitting means is controlled to emit light, the light emitting means is controlled not to emit light when they do not match.

  Here, in the present invention, the position of the person and the position of the light emission point by the light emitting device are specified from the image captured by the image capturing device by the specifying means, and the position of the person specified by the specifying means is determined by the position determining means. It is determined whether or not the position of the light emitting point specified by the specifying means is included within a predetermined range from the position, and a warning is issued when the warning means determines that the position is not included by the position determining means Is emitted. The warning by the warning means includes a warning by visual display, permanent visual display, and audible display using a display means.

  Thus, according to the suspicious person detection system according to claim 5, the position of the person and the position of the light emitting point by the light emitting device according to the present invention are specified from the photographed image, and are determined in advance from the position of the specified person. It is determined whether or not the position of the specified light emitting point is included within the range, and a warning is issued when it is determined that the specified light emitting point is not included. And it can detect with high precision.

  In the present invention, as in the invention described in claim 6, the transmission device may transmit the permitter information within a photographing region of the photographing device. Thereby, it is possible to prevent unnecessary permitter information from being transmitted outside the photographing range by the photographing apparatus.

  Further, according to the present invention, as in the invention described in claim 7, the permitter information may be information predetermined for each predetermined time range and for each predetermined region. Thereby, it is possible to easily and accurately detect whether or not the visitor is a permitter for each predetermined time range and for each predetermined region.

  On the other hand, in order to achieve the second object, the program according to claim 8 shoots the light emitting device according to any one of claims 1 to 4 and an area to be detected by a suspicious person. An imaging device, permitter storage means that stores permitter information indicating a permitter permitted to enter the area, and the permitter information stored in the permitter storage means are transmitted in the area. A program executed by a suspicious person detection system provided with a transmitting device, wherein the computer specifies a position of a person and a position of a light emitting point by the light emitting device from an image photographed by the photographing device; Position determining means for determining whether or not the position of the light emitting point specified by the specifying means is included within a predetermined range from the position of the person specified by the specifying means. It is intended to function as a warning means for issuing a warning when it is determined not to be included by the position determining means.

  Therefore, according to the program according to the eighth aspect, the computer can be caused to act in the same manner as the invention according to the fifth aspect. Therefore, similarly to the invention according to the fifth aspect, the visitor is the authorized person. It can be detected easily and with high accuracy.

  According to the invention described in any one of claims 1 to 4, when the holder indicated by the holder information stored in advance matches the permitter indicated by the received permitter information. Since the light emitting means is controlled to emit light, and the light emitting means is controlled not to emit light when they do not match, it is easily and accurately determined whether or not the owner is an authorized person permitted to enter. The effect that it can detect is acquired.

  According to the invention of any one of claims 5 to 8, the position of the person and the position of the light emitting point by the light emitting device according to the present invention are specified from the captured image, and the specified person's position is determined. It is determined whether or not the position of the specified light emitting point is included within a predetermined range from the position, and a warning is issued when it is determined that the position is not included. It is possible to obtain an effect that it can be easily and accurately detected.

It is a mimetic diagram showing the whole suspicious person detection system composition concerning an embodiment. It is a top view which shows the structure of the building which the suspicious person detection system which concerns on embodiment makes into a suspicious person's detection target. It is the side view and top view which show the structure of each division area | region in the building which the suspicious person detection system which concerns on embodiment makes into a suspicious person's detection target. It is a perspective view which shows the structure of the ID card which concerns on embodiment. It is a block diagram which shows the principal part structure of the electric system of the ID card which concerns on embodiment. It is a block diagram which shows the principal part structure of the electric system of the suspicious person detection apparatus which concerns on embodiment. It is a schematic diagram which shows the main memory content of the secondary memory | storage part with which the suspicious person detection apparatus which concerns on embodiment was equipped. It is a schematic diagram which shows the structure of the ID information database which concerns on embodiment. It is a schematic diagram which shows the structure of the permission state management database which concerns on embodiment. It is a flowchart which shows the flow of a process of the suspicious person detection program which concerns on embodiment. It is a flowchart which shows the flow of a process of the authorizer authentication program which concerns on embodiment. It is the schematic which shows the structure of the suspicious person presentation screen which concerns on embodiment. It is the schematic which shows the structure of the normal screen which concerns on embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. Here, a case will be described in which the present invention is applied to a suspicious person detection system in which an office building is a building whose detection target is a suspicious person (hereinafter referred to as a “detection target building”).

  First, the configuration of the suspicious person detection system 10 to which the present invention is applied will be described with reference to FIGS.

  As shown in FIG. 1, the suspicious person detection system 10 according to the present embodiment includes a suspicious person detection device 20 that plays a central role in the system 10. In the suspicious person detection system 10 according to the present embodiment, as shown in FIG. 2, the suspicious person detection device 20 is installed in the server room 85 provided in the detection target building 90, but is not limited thereto. These may be provided in other rooms or buildings other than the detection target building 90.

  On the other hand, as shown in FIG. 1, the suspicious person detection system 10 according to the present embodiment includes a plurality of ID (Identification) cards 50 individually possessed by visitors to the detection target building 90, and each detection target building. A transmitter 30 and a plurality of transmitters 30 for transmitting later-described permitter information (hereinafter referred to as “detection target partition regions”) provided as predetermined regions to be detected by the suspicious person in 90 (hereinafter referred to as “detection target partition regions”). In the present embodiment, there are provided four video cameras (hereinafter referred to as “cameras”) 40 capable of capturing visible light images of moving images.

  By the way, as shown in FIG. 2, the detection target building 90 according to the present embodiment includes an entrance hall (hereinafter referred to as “hole”) 80, meeting rooms 82A to 82D, reception rooms 83A to 83C, and general office work. Each of the rooms 84A to 84C, the server room 85, the safe room 86, and the president room 87, the staircases 88A to 88B, and the corridors 89A to 89F are provided.

  The hall 80 is provided with a reception 80A. In the suspicious person detection system 10 according to the present embodiment, persons existing in the detection target building 90 are managed by the ID card 50, and visitors to the detection target building 90 are also managed by the ID card 50. . For this purpose, the reception 80A distributes and collects the ID card 50 to visitors.

  The hall 80, meeting rooms 82A to 82D, reception rooms 83A to 83C, general offices 84A to 84C, server room 85, safe room 86, president room 87, staircase rooms 88A to 88B, and corridors 89A to 89F Doors 92 are provided at the entrances.

  In the suspicious person detection system 10 according to the present embodiment, the meeting rooms 82A to 82D, the reception rooms 83A to 83C, the general offices 84A to 84C, and the president room 87 in the detection target building 90 are partitioned areas, that is, Although the hall 80, the server room 85, the safe room 86, the staircase rooms 88A to 88B, and the corridors 89A to 89F are applied as the detection target section areas, it goes without saying that the present invention is not limited thereto.

  As an example, as shown in FIG. 3, the transmitter 30 is provided at a substantially central position of the ceiling in each detection target partition area 90A, and a plurality of (four) cameras 40 are provided on the ceiling in each detection target partition area 90A. Each is provided at a different position.

  In the suspicious person detection system 10 according to the present embodiment, the position of the ID card 50 possessed by a visitor or the like who enters the detection target building 90 is detected from an image obtained by photographing with the camera 40. Therefore, the cameras 40 are distributed and arranged at positions where photographing can be performed so as to cover as much as possible the entire periphery of the visitors present in the installed detection target partition area 90A.

  Therefore, in the example shown in FIG. 3, front, back, left, right, and left in the traveling direction (in the example shown in FIG. 3, the left-right direction on the paper) when the visitor 70 moves to another partition area. Cameras 40 are provided at the four corners. In addition, in the figure, although it has shown about 90 A of detection target partition areas 90A of planar view, other detection target partition areas 90A, such as L shape of planar view, are similarly installed. The cameras 40 are distributed and arranged at positions where photographing can be performed so as to cover the entire periphery of the visitors 70 existing in

  Further, in the suspicious person detection system 10 according to the present embodiment, the transmitter 30 is installed so that the permitter information is transmitted only to the imaging region of each camera 40 as much as possible in order to prevent wasteful power consumption. The position, the transmission direction and transmission intensity of permitter information by the transmitter 30 are adjusted in advance.

  By the way, in the suspicious person detection system 10 according to the present embodiment, in addition to the visitor to the detection target building 90 described above, a worker who works in the detection target building 90 is also a management target. Also, the ID card 50 is distributed in advance.

  Next, the configuration of the ID card 50 according to the present embodiment will be described with reference to FIG.

  As shown in the figure, the ID card 50 according to the present embodiment is a flat plate having a rectangular shape in plan view, and the face photograph and name of the owner are written on the surface, and the light emitting element 50A is It is provided on the surface. In the ID card 50 according to the present embodiment, a light emitting diode that emits infrared light (so-called infrared LED) is applied as the light emitting element 50A. You may apply what emits other lights, such as light emitting elements other than a diode.

  Although the ID card 50 shown in FIG. 4 is for workers, the one for visitors is the same as that for workers except that the face photo and name are not written on the surface. It is.

  Next, with reference to FIG. 5, the structure of the main part of the electrical system of the ID card 50 will be described.

  As shown in the figure, the ID card 50 according to the present embodiment includes the above-described light emitting element 50A, a CPU (central processing unit) 50B that controls the operation of the entire ID card 50, and various processing programs executed by the CPU 50B. A RAM 50C used as a work area, a ROM 50D in which various programs and various parameters are stored in advance, and a communication I / F (interface) 50E for wirelessly transmitting and receiving various signals to and from an external device, etc. An antenna 50 </ b> F connected to the communication I / F 50 </ b> E and a power supply 50 </ b> G that supplies driving power to each part of the ID card 50 are provided. In order to avoid complications, connection wiring from the power supply 50G to each part of the power supply destination is omitted in the figure.

  A light emitting element 50A is connected to the CPU 50B, and the CPU 50B can selectively switch between light emission and non-light emission of the light emitting element 50A. Further, the RAM 50C and the ROM 50D are connected to the CPU 50B, and the CPU 50B can access the RAM 50C and the ROM 50D. Further, a communication I / F 50E is connected to the CPU 50B, and the CPU 50B can exchange various signals with an external device or the like via the communication I / F 50E.

  In the ID card 50 according to the present embodiment, the CPU 50B, the RAM 50C, the ROM 50D, the communication I / F 50E, the antenna 50F, and the power supply 50G are configured as IC tags, thereby reducing the size and the size of the ID card 50. Cost reduction is realized.

  In the suspicious person detection system 10 according to the present embodiment, ID information to be described later corresponding to each person to whom the ID card 50 is distributed is predetermined, and the ID information is stored in the ROM 50D of each ID card 50. Is stored in advance.

  On the other hand, as shown in FIG. 1, a suspicious person detection device 20 is electrically connected to a transmitter 30 provided in each detection target partition area 90 </ b> A. Control of the transmission operation of permitter information can be performed for each detection target partition area. The suspicious person detection device 20 is also electrically connected to a camera 40 provided in each detection target partition area 90A, and the suspicious person detection device 20 uses the camera 40 to obtain image information obtained by photographing with each camera 40. You can enter every 40.

  In the suspicious person detection system 10 according to the present embodiment, the camera 40 is always operated, and the suspicious person detection apparatus 20 is constantly input with image information indicating a moving image obtained by shooting from the camera 40. Has been.

  Here, based on the image information input from the camera 40, the suspicious person detection device 20 according to the present embodiment recognizes whether a person exists in the image indicated by the image information, and the person exists. In this case, it has a function of deriving position information indicating the presence position (hereinafter referred to as “human position detection function”). The suspicious person detection device 20 recognizes whether or not the person is present in the image indicated by the image information input from the camera 40 in a substantially circular shape and the range of the planar area of the person's head. Is a region of a predetermined size, and a region in which at least one color of skin color and a predetermined color as a human hair color such as black, brown, white, gold occupies more than half of the total area If it exists, it is performed by recognizing that the person is present by assuming that the area is the area of the person's head. It is good also as a form to perform. Further, in the suspicious person detection device 20, the position of the center of gravity of the recognized person is applied as the position of the person. However, the position is not limited to this, and the position of the person such as the center position of the person's head is considered. It is good also as a form which applies the other position which can be.

  Further, in the suspicious person detection device 20 according to the present embodiment, a light emitting point from the light emitting element 50 </ b> A of the ID card 50 exists in the image indicated by the image information based on the image information input from the camera 40. Or a function for deriving position information indicating the presence position when the light emission point exists (hereinafter referred to as a “light emission point position detection function”). In the suspicious person detection device 20, the recognition as to whether or not the light emission point is present is determined in advance as the frequency of the light emitted from the light emitting element 50A in the image indicated by the image information input from the camera 40. When there is an end point of light having a frequency in a predetermined range including the frequency, the position of the end point is regarded as the presence position of the light emitting point, and position information indicating the presence position is derived. However, the present invention is not limited to this, and other known light emission point derivation techniques may be applied.

  Next, with reference to FIG. 6, the main configuration of the electrical system of the suspicious person detection device 20 according to the present embodiment will be described.

  As shown in the figure, the suspicious person detection device 20 according to the present embodiment includes a CPU (Central Processing Unit) 20A that controls the operation of the suspicious person detection device 20 and a work area when the CPU 20A executes various processing programs. A RAM 20B used as a memory, a ROM 20C in which various control programs and various parameters are stored in advance, a secondary storage unit (here, a hard disk device) 20D used to store various information, and various information are input. And a display 20F used for displaying various types of information, and an input / output I / F (interface) 20G for exchanging various signals with an external device or the like. These units are electrically connected to each other by a system bus BUS.

  Therefore, the CPU 20A accesses the RAM 20B, the ROM 20C, and the secondary storage unit 20D, acquires various input information via the keyboard 20E, displays various information on the display 20F, and external devices via the input / output I / F 20G. Various signals can be exchanged between the two. Each transmitter 30 and each camera 40 are electrically connected to the suspicious person detection device 20 via the input / output I / F 20G.

  On the other hand, FIG. 7 schematically shows the main storage contents of the secondary storage unit 20D provided in the suspicious person detection device 20. As shown in the figure, the secondary storage unit 20D is provided with a database area DB for storing various databases and a program area PG for storing application programs for performing various processes. ing.

  The database area DB includes an ID information database DB1 and a permission state management database DB2. Hereinafter, the configuration of these databases will be described in detail with reference to the drawings.

  As shown in FIG. 8, the ID information database DB1 according to the present embodiment stores the above-described ID information and attribute information corresponding to the ID information in association with each other.

  In the example shown in the figure, the range of ID information from “1001” to “1020” corresponds to a guard who guards the detection target building 90, and the range of ID information from “2001” to “2050” is working. The ID information ranges from “3001” to “3100” corresponds to general employees in the worker, and the ID information ranges from “4001” to “4200” corresponds to the detection target building 90. It shows that it can respond to visitors.

  Therefore, in the suspicious person detection system 10 according to the present embodiment, the ID card 50 storing any ID information that does not overlap each other within the range from “1001” to “1020” is distributed to the guards. The ID card 50 storing any ID information that does not overlap each other within the range from “2001” to “2050” is distributed to the managers, and from “3001” to “3100” to the general employees. ID card 50 storing any ID information that does not overlap with each other within the range up to is distributed, and any ID information that does not overlap with each other within the range from '4001' to '4200' is distributed to the visitor. The stored ID card 50 is distributed.

  On the other hand, as shown in FIG. 9, the permission state management database DB2 according to the present embodiment is configured to store each information of area division, time zone, and permitter ID.

  The area classification information is information indicating a detection target partition area in the detection target building 90. In the example shown in the figure, the hall indicates the hall 80, the server room indicates the server room 85, and the safe room is a safe. The room 86 is shown, the staircase shows the staircases 88A-88B, and the hallway shows the hallways 89A-89F.

  The time zone information is information indicating a plurality of predetermined time zones at the time of the day, and the permitter ID information corresponds to the detection target partition area indicated by the corresponding area segment information. This is information indicating ID information corresponding to a person permitted to enter the time zone.

  In the example shown in the figure, for example, in the hall 80, the owner of the ID card 50 in which any one of “1001” to “1020” is stored as ID information from 0 o'clock to 5 o'clock, that is, the above-mentioned guard is stored. From 5 o'clock to 20 o'clock, the owner of the ID card 50 in which any of '1001' to '4200' is stored as ID information, that is, the above-mentioned guard, manager, It shows that both general employees and visitors can enter.

  Next, the operation of the suspicious person detection system 10 according to the present embodiment will be described.

  First, the operation of the suspicious person detection device 20 according to the present embodiment will be described with reference to FIG. Note that FIG. 10 shows the process of the suspicious person detection program executed by the CPU 20A of the suspicious person detection device 20 at a predetermined timing (in this embodiment, the timing when the execution instruction is input via the keyboard 20E). It is a flowchart which shows a flow, The said program is previously memorize | stored in the program area | region PG of secondary storage part 20D. Here, in order to avoid complications, a case will be described in which the permission state management database DB2 shown in FIG. 9 has already been constructed as an example.

  In step 100 of the figure, all information registered in the permission state management database DB2 (hereinafter referred to as “permission state management information”) is read, and in the next step 102, based on the read permission state management information. For the transmitter 30 provided in each detection target partition area 90A, the information (the above-mentioned permitter information) indicating the permitter ID corresponding to the time zone corresponding to this point in the corresponding detection target partition area 90A. Control to start transmission. For example, when the target detection area 90A is the hall 80 and the time at this time is in the range from 0:00 to 5:00, the information from '1001' to '1020' as permitter information The transmitter 30 is controlled to start transmission.

  In the next step 104, image information is acquired from each camera 40, and in the next step 106, whether or not a person exists in the image indicated by each acquired image information is recognized by the human position detection function described above. In addition, when there is a person, position information indicating an existing position is derived.

  In the next step 108, it is determined whether or not there is an image recognized as a person by the processing in step 106. If the determination is negative, the process proceeds to step 124 described later, whereas the determination is affirmative. In step 110, the light emitting point position detection function described above is indicated by the image information acquired from the camera 40 provided in the detection target section area 90A that is recognized as a person by the processing in step 106. The image recognizes whether or not a light emitting point from the light emitting element 50A of the ID card 50 exists in the image, and derives position information indicating the existing position when the light emitting point exists.

  In the next step 112, it is determined whether or not there is an image recognized as having a light emitting point by the processing of step 110. If the determination is negative, the process proceeds to step 120 described later, and the determination is affirmative. In this case, the process proceeds to step 114, where the presence position of the person indicated by the position information obtained by the process of step 106 and the existence position of the light emission point indicated by the position information obtained by the process of step 110 are Is calculated for each detection target partition area 90A.

  In the next step 116, the person whose luminous difference is less than or equal to a predetermined threshold and the luminous point are associated with each other. This association is performed in order to determine whether a person existing in the detection target partition area 90A has the ID card 50 that emits the light emitting element 50A. In the suspicious person detection program according to the above, a predetermined value (50 cm in the present embodiment) is applied as the upper limit value of the difference when a person has the ID card 50 as the threshold value. However, the present invention is not limited to this, and it may be configured such that the user designates the detection depending on the required detection accuracy of the suspicious person, the use of the suspicious person detection system 10, and the like.

  In the next step 118, there is a suspicious person by determining whether or not there is a person who has not been associated with a light emitting point by the process of step 116 among the persons recognized by the process of step 106. If the result is affirmative, the process proceeds to step 120. After controlling to display a predetermined suspicious person presentation screen on the display 20F, the process proceeds to step 124.

  In step 120, the configuration of the suspicious person presentation screen differs between the case where the determination is shifted to step 120 as a negative determination in step 112 and the case where the determination is transferred as a positive determination in step 118. Is done.

  That is, if the determination at step 112 is negative and the process proceeds to step 120, all of the persons recognized as existing in the process at step 108 have the ID card 50 that emits the light emitting element 50A. Since all of these persons are suspicious persons, in this case, a suspicious person presentation screen indicating that all of these persons are suspicious persons is displayed on the display 20F. Control.

  On the other hand, if the determination at step 118 is affirmative and the process proceeds to step 120, the light emitting point was not associated by the process at step 116 among the persons recognized as existing at the process at step 106. Since the person is a suspicious person, in this case, the display 20F is controlled to display a suspicious person presentation screen indicating that the person who is not associated with the light emitting point is a suspicious person.

  FIG. 12 shows a display example of the suspicious person presenting screen when the process proceeds to step 120 with an affirmative determination in step 118. As shown in the figure, in the suspicious person presentation screen according to the present embodiment, the image indicated by the image information acquired from the camera 40 photographing the suspicious person is detected by the process of step 106 above. The person is displayed in a state in which the suspicious person and the person excluding the suspicious person can be identified (in the present embodiment, the suspicious person is surrounded by a broken line and the person excluding the suspicious person is surrounded by a solid line). The suspicious person is shown enlarged. Accordingly, by referring to the suspicious person presentation screen, the user can easily grasp the existence of the suspicious person and who the suspicious person is.

  Although not shown in the figure, the screen for displaying a suspicious person when the determination is shifted to step 120 as a negative determination in step 112 has the same screen configuration as that shown in FIG. A screen in a state where all recognized persons are surrounded by a broken line can be exemplified.

  Here, in the example shown in FIG. 12, the case where there is one detection target partition area 90A where a suspicious person exists is shown, but when there are a plurality of detection target partition areas 90A where a suspicious person exists, The same image is displayed on one screen for all the detection target partition areas 90A where the suspicious person exists, or only one image for one detection target partition area 90A is displayed on one screen, and the user inputs an instruction. The detection target partition area 90A to be displayed may be switched according to the above.

  On the other hand, if a negative determination is made in step 118, the process proceeds to step 122, and control is performed to display a predetermined normal screen on the display 20F, and then the process proceeds to step 124.

  FIG. 13 shows a display example of a normal screen according to the present embodiment. As shown in the figure, on the normal screen according to the present embodiment, the image indicated by the image information acquired from the camera 40 provided in the detection target partition area 90A where the person is detected by the processing of step 106 above. On the other hand, all the people detected by the process of step 106 are displayed in a state indicating that they are not suspicious persons (in this embodiment, a state surrounded by a solid line). Therefore, by referring to the normal screen, the user can easily grasp that there is no suspicious person and the location of the person.

  In step 124, it is determined whether or not a predetermined timing has arrived as a timing for ending the suspicious person detection program. If a negative determination is made, the process returns to step 102. Control goes to step 126.

  In the suspicious person detection program according to the present embodiment, the timing at which the instruction information for instructing the user to end is input via the keyboard 20E is applied as the predetermined timing applied in step 124. However, the present invention is not limited to this, and it goes without saying that other timings such as a timing when a predetermined time is reached may be applied.

  In step 126, the transmitter 30 provided in each detection target partition area 90A is controlled to stop transmission of authorized person information, and then the suspicious person detection program is terminated.

  Next, the operation of the ID card 50 according to the present embodiment will be described with reference to FIG. FIG. 11 is a flowchart showing the flow of processing of the permitter authentication program executed by the CPU 50B of the ID card 50 every predetermined period (0.1 seconds in the present embodiment). Is stored in advance in a predetermined area of the ROM 50D.

  In step 200 in the figure, it is determined whether or not the permitter information is received via the communication I / F 50E. If the determination is affirmative, the process proceeds to step 202, and ID information is read from the ROM 50D.

  In the next step 204, it is determined whether or not the ID information read out by the processing in step 202 is included in the received authorized person information, so that the holder is an authorized person who may be present on the spot. If the determination is negative, the process proceeds to step 208, which will be described later. On the other hand, if the determination is affirmative, the process proceeds to step 206 and control is performed to start the light emission of the light emitting element 50A. End this permitter authentication program.

  On the other hand, if the determination in step 200 is negative, the process proceeds to step 208. At this time, it is determined whether or not the light emitting element 50A emits light. If the determination is affirmative, the process proceeds to step 210. The permitter authentication program is terminated after controlling the light emitting element 50A to stop light emission. On the other hand, if the determination is negative, the permitter authentication program is terminated without executing the processing of step 210. .

  As described above in detail, in the ID card 50 according to the present embodiment, the holder indicated by the previously stored owner information (ID information in the present embodiment) and the permitted person information received are used. When the authorized person shown matches, the light emitting means (in this embodiment, the light emitting element 50A) is controlled to emit light, and when it does not match, the light emitting means is controlled not to emit light. It is possible to easily and accurately detect whether the person is a permitted person who is permitted to enter.

  In addition, in the ID card 50 according to the present embodiment, the light emitting means emits infrared light. Therefore, even when the ID card 50 is carried in a clothing pocket, Whether or not the person is permitted to enter can be detected easily and with high accuracy.

  In addition, since a part of the ID card 50 according to the present embodiment is configured by an IC tag, the ID card 50 can be configured by using an IC tag that is widely spread at present, resulting in low cost. The ID card 50 can be created.

  On the other hand, in the suspicious person detection system 10 according to the present embodiment, the position of the person and the position of the light emission point by the ID card 50 are specified from the captured image, and within a predetermined range from the position of the specified person, It is determined whether or not the specified position of the light emitting point is included, and a warning is issued when it is determined that the specified light emitting point is not included, so it is easily and accurately detected whether or not the visitor is a permitter can do.

  Further, in the suspicious person detection system 10 according to the present embodiment, it is determined that a suspicious person is present when there is no light emitting point even though there is a person, and therefore, the suspicious person is possessed by the ID card 50. It is possible to detect that a person who is not a suspicious person who is not a permitter is present.

  Further, in the suspicious person detection system 10 according to the present embodiment, since the permitter information is transmitted within the photographing region by the photographing device (camera 40 in the present embodiment), the outside of the photographing range by the photographing device. It is possible to prevent unnecessary permitter information from being transmitted.

  Further, in the suspicious person detection system 10 according to the present embodiment, the permitter information is predetermined information for each predetermined time range and for each predetermined region. It is possible to easily and accurately detect whether or not the visitor is a permitter for each predetermined time range and for each predetermined area.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. Various changes or improvements can be added to the above-described embodiment without departing from the gist of the present invention, and embodiments to which such changes or improvements are added are also included in the technical scope of the present invention.

  Further, the above embodiment does not limit the invention according to the claims (claims), and all combinations of features described in the embodiment are essential to the solution means of the invention. Is not limited. The embodiments described above include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. Even if some constituent requirements are deleted from all the constituent requirements shown in the above-described embodiment, as long as an effect is obtained, a configuration from which these several constituent requirements are deleted can be extracted as an invention.

  For example, in the above embodiment, the light emission state by the light emitting element 50A of the ID card 50 is not particularly mentioned. For example, the CPU 50B is predetermined so that the ID information stored in the ROM 50D can be specified. The light emitting element 50A may be controlled to emit light in the emitted light state.

  In addition, as a light emission state in this case, a light emission period, light emission brightness, light emission color, etc. can be illustrated. In this case, the holder of the ID card 50 can be specified.

  In the above-described embodiment, the case where the warning by the visual display by the display 20F is applied as the warning by the warning means of the present invention has been described. However, the present invention is not limited to this, for example, suspicious person detection A sounding means such as a buzzer or a speaker is provided in the apparatus 20 and a warning is given by the sounding by the sounding means, or an image forming apparatus such as a printer is provided in the suspicious person detection apparatus 20, and image formation by the image forming apparatus is performed. It is good also as a form etc. which warn by. In this case as well, the same effects as in the above embodiment can be obtained.

  Further, in the above embodiment, the case where the permitter information is transmitted only within the imaging region by the camera 40 has been described. It is good also as a form which transmits permitter information. In this case, although the power consumption for transmitting the permitter information is increased as compared with the above embodiment, the permitter who is permitted to exist in the detection target partition area 90A is the detection target partition area 90A. The light emitting element 50A of the ID card 50 possessed by the permitter can be caused to emit light at any place of the permitter, so that it is surely determined whether or not the permitter is by another person in the detection target partition area 90A. Can do.

  Moreover, although the case where the camera 40 which image | photographs a moving image was applied as an imaging device of this invention was demonstrated in the said embodiment, this invention is not limited to this, and it image | photographs a still image. A camera, a so-called digital electronic still camera may be applied. In this case as well, the same effects as in the above embodiment can be obtained.

  Moreover, although the case where the camera for visible light was applied as an imaging device of this invention was demonstrated in the said embodiment, this invention is not limited to this, It is good also as a form which applies an infrared camera. In this case as well, the same effects as in the above embodiment can be obtained.

  Moreover, although the case where an office building was applied as an area to be detected by a suspicious person according to the present invention has been described in the above embodiment, the present invention is not limited to this, for example, various offices, hospitals In addition to other buildings where an unspecified number of people can enter, such as schools, museums, museums, movie theaters, etc., it is also possible to adopt a form in which outdoor areas such as parks and zoos are applied. In this case as well, the same effects as in the above embodiment can be obtained.

  Further, in the above embodiment, the case where the light emitting device of the present invention with a built-in power supply is applied has been described. However, the present invention is not limited to this, and does not have a built-in power supply, and external electromagnetic A configuration in which driving power is supplied by induction may be applied. In this case, the light emitting device can be reduced in size and weight.

  In addition, the configuration of the suspicious person detection system 10 described in the above embodiment (see FIGS. 1 to 7) is merely an example, and it is needless to say that the configuration can be appropriately changed without departing from the gist of the present invention.

  The data structures of the various databases described in the above embodiment (see FIGS. 8 and 9) are also examples, and new data can be added or unnecessary data can be deleted as necessary. Not to mention what you can do.

  The processing flow of the various programs shown in the above embodiment (see FIGS. 10 and 11) is also an example, and it goes without saying that it can be changed as appropriate without departing from the gist of the present invention.

  Furthermore, the configuration of various screens shown in the above embodiment (see FIGS. 12 and 13) is also an example, and it goes without saying that it can be changed as appropriate without departing from the gist of the present invention.

10 Suspicious Person Detection System 20 Suspicious Person Detection Device 20A CPU
20B RAM
20C ROM
20D Secondary storage unit 20E Keyboard 20F Display 20G Input / output I / F
30 Transmitter 40 Camera 50 ID Card 50A Light Emitting Element 50B CPU
50C RAM
50D ROM
50E Communication I / F
50F antenna 50G power supply 70 visitors 90 detection target building 90A detection target partition area DB1 ID information database DB2 permission state management database

Claims (8)

A light emitting means configured to be switchable between light emission and non-light emission;
Holder storage means for storing holder information indicating the holder in advance;
Receiving means for receiving permitter information indicating a permitter permitted to enter the area to be detected by the suspicious person;
Determining means for determining whether or not the holder indicated by the holder information stored in the holder storage means matches the permitter indicated by the permitter information received by the receiving means;
Control means for controlling the light emitting means to emit light when determined by the determining means to match, and for controlling the light emitting means to emit no light when determined not to match by the determining means;
A light emitting device comprising: The light emitting device according to claim 1, wherein the light emitting means emits infrared light. The light-emitting device according to claim 1, wherein the owner storage unit, the reception unit, the determination unit, and the control unit are configured by an IC tag. The control means, when controlling the light emitting means to emit light, controls the light emitting means to emit light in a predetermined light emitting state so that the owner information can be specified. The light emitting device according to claim 3. The light emitting device according to any one of claims 1 to 4,
An imaging device for imaging an area to be detected by a suspicious person;
Authorized person storage means for preliminarily storing authorized person information indicating authorized persons permitted to enter the area;
A transmitting device for transmitting the permitter information stored in the permitter storage means within the area;
A specifying means for specifying a position of a person and a position of a light emitting point by the light emitting device from an image photographed by the photographing device;
Position determining means for determining whether or not the position of the light emitting point specified by the specifying means is included within a predetermined range from the position of the person specified by the specifying means;
Warning means for issuing a warning when it is determined not to be included by the position determination means;
Suspicious person detection system including. The suspicious person detection system according to claim 5, wherein the transmission device transmits the permitter information within an imaging region of the imaging device. The suspicious person detection system according to claim 5 or 6, wherein the permitter information is information predetermined for each predetermined time range and for each predetermined area. A light emitting device according to any one of claims 1 to 4, a photographing device for photographing a region to be detected by a suspicious person, and permitter information indicating a permitter permitted to enter the region. A program executed by a suspicious person detection system including a permitter storage means stored in advance and a transmission device that transmits the permitter information stored in the permitter storage means in the area,
Computer
A specifying means for specifying a position of a person and a position of a light emitting point by the light emitting device from an image photographed by the photographing device;
Position determining means for determining whether or not the position of the light emitting point specified by the specifying means is included within a predetermined range from the position of the person specified by the specifying means;
Warning means for issuing a warning when it is determined not to be included by the position determination means;
Program to function as.

Images