JP5405340B2 - Image monitoring apparatus and monitoring system - Google Patents

Description

  The present invention relates to an image monitoring apparatus having a function of monitoring a user in a restricted area, and more particularly to a technique for appropriately monitoring using an image obtained by photographing a restricted area with a surveillance camera.

  2. Description of the Related Art Conventionally, in order to manage user access to important objects and restricted areas, techniques for managing user access using ID cards and biometric information are widely used. In connection with such technology, when a user enters the management zone after performing authentication, an illegal act of the user in the management zone is performed using a camera system that captures the inside of the management zone. An entrance / exit management system has been proposed that monitors camera images with a camera image (see, for example, Patent Document 1).

JP 2007-102570 A

  However, in the conventional entrance / exit management system, whether to enter / exit the section (for example, whether to enter a certain room) is determined for each section (for example, room unit) to be managed. Therefore, when various important items and stored items are stored in various places in one room, it is not sufficient to manage the user's access to the important items and stored items.

  For example, it is necessary to allow access only to the extent to which each user has access authority, such as an office space where multiple departments (such as the finance department and accounting department) live together, and a locker room where multiple lockers are placed. There is a situation. In such a case, it is possible to restrict access appropriately by restricting the access of users by partitioning each partition or locker physically with a partition or the like. However, in that case, there is a problem that construction is required each time a department is transferred or a room layout is changed, and it may be difficult to install partitions depending on the room layout.

  In this way, when various important items and stored items are stored in various places in a single room (management section), the conventional entrance / exit management system uses a camera system to store the contents in the room. Although an attempt is made to monitor the user's illegal actions by photographing the user's actions, it is necessary for the monitor to constantly monitor the camera image, which increases the monitoring burden.

  The present invention has been made in view of the above problems, and an image monitoring apparatus capable of reducing the burden of constant monitoring by a monitor without using a physical partition and realizing monitoring according to his / her authority. The purpose is to provide.

  An image monitoring apparatus according to the present invention is an image monitoring apparatus that monitors a user in a restricted area using a restricted area image obtained by photographing the restricted area with a surveillance camera, and that is for a user who has entered the restricted area. An identification information acquisition unit that acquires identification information, an image acquisition unit that acquires image data of the restricted area image, an individual monitoring area set in the restricted area image, and the identification information of the user A storage unit that stores in advance as area information for each user, and a monitoring area setting that sets an individual monitoring area corresponding to identification information of a user who has entered the restricted area as a monitoring area in the restricted area image And an abnormality determination unit that determines whether or not there is an abnormality in the restricted area based on fluctuations that occur in the monitoring area set in the restricted area image.

  As a result, when a user enters or leaves (enters or leaves) the restricted area, the identification information acquisition unit acquires the identification information of the user. In the image of the restricted area taken by the surveillance camera (restricted area image), the area to be monitored for each user (the area where the user's access is prohibited) is set, and he enters the restricted area. An individual monitoring area corresponding to the identification information of the user is set as a monitoring area in the restricted area image. For example, if there is only one user entering the restricted area, the individual monitoring area for that user is set as the monitoring area, and there are multiple users entering the restricted area. In this case, an area obtained by combining the individual monitoring areas of the plurality of users is set as the monitoring area. When a change occurs in the monitoring area in the restricted area image, it is determined that there is an abnormality in the restricted area. As described above, according to the present invention, it is possible to monitor the behavior of the user in the restricted area by setting the monitoring area for each user in the image obtained by photographing the restricted area. In other words, instead of providing a physical partition in the restricted area, an area where the restricted area (the entire area) should be monitored for each user by providing a virtual partition in the image of the restricted area. It is possible to divide into (partial areas) and monitor the user's behavior in that area (monitoring area). Therefore, when monitoring the users in the restricted area, the burden of the monitor constantly monitoring with the monitor is reduced. In addition, the layout of the monitoring area can be dynamically changed according to the user who enters the restricted area. In other words, unlike a physical partition, a virtual partition requires no installation work and is not subject to restrictions such as floor plans for restricted areas, so it depends on the users entering the restricted area. Can be installed easily. As described above, according to the present invention, it is possible to realize monitoring according to access authority for each user by reducing the burden of constant monitoring by a monitor without using a physical partition.

  In the image monitoring apparatus according to the present invention, when a plurality of users enter the restricted area, the monitoring area setting unit AND-joins the individual monitoring areas corresponding to the identification information of each user. An area obtained in this manner may be set as the monitoring area.

  As a result, when there are multiple users entering the restricted area, the individual monitoring areas of these multiple users (areas where each user's access is prohibited) are ANDed (logical ANDed). Thus, an area obtained by extracting an overlapping part between the individual monitoring areas is set as a monitoring area. In other words, this monitoring area can be said to be an area obtained by OR-joining (logical OR) the areas that each user is permitted to access. Thus, when there are a plurality of users entering the restricted area, it is possible to suitably set the monitoring area.

  In the image monitoring apparatus of the present invention, the monitoring area setting unit, when the user leaves the restricted area, corresponds to a user who is currently entering a predetermined time after the user leaves. A new monitoring area may be reset based on the individual monitoring area.

  Thus, when the user leaves the restricted area, the monitoring area (new monitoring area) is reset according to the setting conditions excluding the individual monitoring area of the user. The new monitoring area is reset after a predetermined time (for example, 30 seconds) after the user leaves, so if there are other users remaining in the restricted area, Users) can be assured of a time margin for notifying that the monitoring area has been reset. Therefore, it is possible to reduce the possibility that the user who remains in the restricted area enters the monitoring area without knowing that the monitoring area has been reset, and is erroneously detected / reported as an abnormal occurrence. This resetting notification may be performed by sound from a speaker or may be displayed as an image on a display.

  In the image monitoring device of the present invention, the storage unit stores information on the lighting device corresponding to each individual monitoring area in the lighting device installed in the restricted area, and the image monitoring device further includes the monitoring When the area is set, an illumination control unit that turns on the illumination device corresponding to the monitoring area may be provided.

  Thus, when a monitoring area is set, the lighting device corresponding to the monitoring area is turned on, so that the user in the restricted area knows which area is set as the monitoring area by the presence or absence of lighting. Can do. Here, the lighting of the lighting device corresponding to the monitoring area is, for example, turning on the lighting device in an area other than the monitoring area (an area where user access is permitted) and prohibiting the monitoring area (user access is prohibited). The illumination device in the designated area) is turned off. Also, lighting devices in areas other than the monitoring area (areas where user access is permitted) are lit in white light, and lighting apparatuses in monitoring areas (areas where user access is prohibited) are lit in red light, etc. May be.

  The monitoring system of the present invention includes an entrance / exit management device that manages the entry / exit of users to / from a restricted area, and an image monitoring device that monitors users in the restricted area using a restricted area image obtained by photographing the restricted area with a surveillance camera. The access management device includes an authentication information storage unit that stores identification information of a user who can enter and exit the restricted area, a user who enters the restricted area, and the restricted area. An identification information receiving unit that receives identification information input by a user who leaves, a determination unit that determines whether the user can go in and out by checking the identification information input by the user, and a user who is determined to be able to go in and out An output unit that outputs the identification information to the image monitoring apparatus, and the image monitoring apparatus acquires, from the access management apparatus, the identification information acquisition unit that acquires the identification information of the user who is determined to be able to enter and exit. , An image acquisition unit that acquires image data of the restricted area image, an individual monitoring area set in the restricted area image, and the user identification information are associated with each other and stored in advance as area information for each user. A storage area, a monitoring area setting section for setting an individual monitoring area corresponding to identification information of a user who has entered the restricted area as a monitoring area in the restricted area image, and set in the restricted area image. And an abnormality determination unit that determines whether there is an abnormality in the restricted area based on fluctuations that occur in the monitored area.

  According to this system, similarly to the above-described apparatus, it is possible to reduce the burden of constant monitoring by a monitor without using a physical partition, and to realize monitoring according to the access authority for each user.

  According to the present invention, it is not necessary to use a physical partition by appropriately setting a monitoring area according to a user who enters the restricted area, and the burden of constant monitoring by the monitoring person can be reduced. It is possible to easily realize monitoring according to the access authority for each user.

1 is a schematic diagram of a monitoring system in an embodiment of the present invention. It is a block diagram which shows the structure of the access control apparatus in embodiment of this invention. It is a block diagram which shows the structure of the image monitoring apparatus in embodiment of this invention. (A) It is the figure which showed an example of the management table. (B) It is the figure which showed an example of the area table. (A) It is the figure which showed an example of user area information. (B) It is the figure which showed an example of occupant information. (C) It is the figure which showed an example of the monitoring setting information. (D) It is the figure which showed an example of the illumination information. It is the figure which showed an example of the restricted area image. (A) It is the figure which showed the example of the individual monitoring area | region of the user A of the locker A. FIG. (B) It is the figure which showed the example of the individual monitoring area | region of the user B of the locker B. FIG. (C) It is the figure which showed the example of the individual monitoring area | region of the user C of the locker C. FIG. It is the figure which showed the example of the monitoring area | region set when the user A and the user B are entering the room. It is a flowchart for demonstrating operation | movement of the monitoring system in embodiment of this invention. It is a flowchart for demonstrating the flow of a monitoring setting process.

  Hereinafter, a monitoring system according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, the case of a monitoring system used for image monitoring of a locker room in which a plurality of lockers are arranged is illustrated, but the scope of the present invention is not limited to this.

(Monitoring system)
FIG. 1 is a schematic diagram of a monitoring system according to the present embodiment. As shown in FIG. 1, in the monitoring system 1, a door 2 with an electric lock that restricts movement between areas is installed at the boundary of a restricted area (a restricted area, also simply referred to as an area). A card reader 3 for reading a user identification code (personal identification information) from an ID card (not shown) possessed by the user who enters and exits each area is installed. In the example of FIG. 1, two areas (a “corridor” in area A and a “locker room” in area B) are shown, on the indoor side (area B side) and the outdoor side (area A side) of the locker room. One card reader 3 is set for each. In this case, it can be said that one door 2 with an electric lock and two card readers 3 are installed as one set.

  An electric lock control device 4 for controlling the electric lock 11 is connected to the door 2 with electric lock and the card reader 3. The electric lock control device 4 may be provided in each door 2 with an electric lock so as to be able to individually manage the user's access to each door 2, and is integrated into a plurality of doors 2 with an electric lock. It may be configured so that one user can be centrally managed.

  As shown in FIG. 1, the electric lock control device 4 is connected to an image monitoring device 5 that monitors users in the area, and the image monitoring device 5 monitors the locker room (area B). It is connected to the camera 6. Moreover, this image monitoring apparatus 5 is also connected to the illuminating device 7 (illumination A1-illumination D2) installed in the ceiling of the locker room (area B). Further, the image monitoring device 5 is also connected to a monitoring terminal 9 installed on a monitoring console of the monitoring center 8, and a monitor of the monitoring center 8 can use the monitor 9 in the locker room with the monitor of the monitoring terminal 9. A person's action can be monitored with an image.

  The door 2 with electric lock, the card reader 3, and the electric lock control device 4 constitute an access management device 10 that manages the access of the user to the locker room, which is a restricted area. That is, it can be said that the monitoring system 1 of the present embodiment includes the access control device 10 and the image monitoring device 5. Hereinafter, the configuration of the access management apparatus 10 and the image monitoring apparatus 5 will be described in detail with reference to FIGS. 2 and 3.

(Access control device)
Here, first, the configuration of the access control apparatus 10 will be described. FIG. 2 is a block diagram illustrating a configuration of the access management apparatus 10. As described above, the access control apparatus 10 includes the door 2 with an electric lock, the two card readers 3, and the electric lock control apparatus 4. As shown in FIG. 2, the door 2 includes an electric lock 11. The electric lock 11 is normally maintained in a locked state, and is unlocked for a predetermined time when an unlock signal is received from the electric lock control device 4. As a result, the user cannot move between the areas unless the card reader 3 reads the identification code stored in the possessed ID card. When the user causes the card reader 3 to read the identification code, the card reader 3 sends the read identification code to the electric lock control device 4 to request authentication, and the electric lock control device 4 collates the received identification code. If the authentication is OK, the electric lock 11 is unlocked.

  The force reader includes a control unit 12 composed of an MPU, a microcomputer, etc., a reading unit 13 that reads a user's identification code from an ID card, and a storage unit 14 that stores the read identification code and its own address information. The display unit 15 that displays an authentication result of the read identification code and the communication interface 16 (communication I / F) that communicates with the electric lock control device 4 are provided. When the card reader 3 reads the user identification code stored in the ID card, the card reader 3 transmits the read identification code to the electric lock control device 4 together with the self-address information.

  The ID force may be any of magnetic force, IC force, or wireless force (wireless transmitter), but is a non-contact force force when using the system. It is preferable. The reading unit 13 can also read biometric information such as a personal fingerprint, palm print, voice print, iris, etc. instead of the ID field, and uses the read information as an identification code for identifying the individual. Also good.

  Furthermore, the reading unit 13 can be an RFID tag reader that reads identification information of an RFID tag possessed by a user instead of an ID card. In this case, in particular, the detection range of the RFID tag reader is within a restricted area. Thus, both a person who enters the area and a person who leaves the area can be detected by one tag reader installed in the restricted area.

  The electric lock control device 4 includes a control unit 17 configured by an MPU, a microcomputer, and the like, a storage unit 18 configured by an HDD, a memory, and the like, and a communication interface 19 (for communicating with the card reader 3 and the image monitoring device 5). A communication I / F) and an electric lock control unit 20 for controlling the electric lock 11 of the door 2 with electric lock. As a functional module, the control unit 17 collates the identification information receiving unit 21 that receives the identification code read by the user from the card reader 3 with the identification code (the identification code read by the user) and compares the identification code received by the user. A determination unit 22 is provided for determining whether to enter or leave the room. The storage unit 18 stores management information such as a management table and an area table, various processing programs, parameters, data, and the like.

  FIG. 4A illustrates an example of the management table. The management table is a table showing qualification information prepared for each card reader 3 and each area. In this example, the management table is a table in which identification codes of users who can enter and leave the restricted area (locker room) are recorded. is there. Therefore, the storage unit 18 corresponds to the authentication information storage unit of the present invention. In the example of FIG. 4A, identification information (XXXX, YYYYY, ZZZZZ) of three users (users A, B, and C) is stored in the storage unit 18 as a management table.

  FIG. 4B shows an example of the area table. In the area table, the address code of the card reader 3, the address code of the electric lock control device 4 (or the electric lock 11 corresponding to the card reader 3) that manages the card reader 3, and the card reader 3 are installed. 3 is a table in which a certain area (location area) and a destination area after the card reader 3 is operated (an area where traffic is restricted by a door with an electric lock corresponding to the card reader 3) are associated in advance. In the example of FIG. 4B, the address code “CR1” of the card reader 3 on the hallway side, the address code “D1” of the electric lock control device 4, the location area “area A (hallway)”, and the destination area “Area B (locker room)” is associated.

  The electric lock control device 4 collates the user identification code received from the card reader 3 with the management table. If the identification code of the user does not match the identification code registered in the management table as a result of the collation, it is determined as authentication NG, the electric lock 11 is not unlocked, and the authentication result is sent to the card reader 3. Send and finish the process. Then, the card reader 3 outputs an authentication result of authentication NG from the display unit 15.

  On the other hand, if the identification code of the user matches the identification code registered in the management table as a result of the verification, it is determined that the authentication is OK, and an unlock signal is output to the corresponding electric lock 11 and the authentication is performed. The result is transmitted to the card reader 3. Then, the card reader 3 outputs an authentication result of authentication OK from the display unit 15. When the received identification code is determined to be authentication OK, the electric lock control device 4 transmits the identification code of the user to the image monitoring device 5 via the communication interface 19. The communication interface 19 corresponds to the output unit of the present invention.

(Image monitoring device)
Next, the configuration of the image monitoring apparatus 5 will be described. FIG. 3 is a block diagram illustrating a configuration of the image monitoring apparatus 5. As shown in FIG. 3, the image monitoring apparatus 5 receives image data of restricted area images from a control unit 23 configured by an MPU, a microcomputer, a storage unit 24 configured by an HDD, a memory, and the like, and a monitoring camera 6. An image acquisition unit 25 to be acquired, an identification information acquisition unit 26 that acquires an identification code of a user determined to be authenticated from the access management device 10, and an external device interface 27 that communicates with the lighting device 7 and the monitoring center 8. (External device I / F).

  The image acquisition unit 25 has a function of receiving image data from the monitoring camera 6. Image data input from the monitoring camera 6 is output to the control unit 23. In the present embodiment, the case where the monitoring camera 6 and the image monitoring device 5 are separate devices has been illustrated. However, the scope of the present invention is not limited to this, and the image monitoring device 5 includes the monitoring camera 6. May be built in.

  The identification information acquisition unit 26 is connected to the access management apparatus 10 and has a function of receiving an identification code of a user who has entered a restricted area where the image monitoring apparatus 5 is installed and an identification code of a user who has left the room. ing. The identification information received from the entry / exit management device 10 is output to the control unit 23.

  The external device interface 27 is connected to the lighting device 7 installed in the restricted area. The lighting device 7 is, for example, ceiling lighting installed on the ceiling of the restricted area, and can be turned on / off with a switch for each unit to be illuminated in the room of the restricted area. The external device interface 27 transmits an ON signal / OFF signal for each lighting unit of the lighting device 7.

  The storage unit 24 stores information such as user area information, occupant information, monitoring setting information, and lighting information. The user area information is obtained by associating the individual monitoring area set in the restricted area image with the user identification code, and corresponds to the area information for each user according to the present invention. The individual monitoring area is a range where entry of the user is not permitted in the restricted area image, and is set in consideration of the access authority of the user in the restricted area, the required action range, and the like (see FIG. 7).

  In the user area information, individual monitoring areas are set and stored for all users who may enter the restricted area. FIG. 5A shows an example of the user area information. In this example, the identification code “XXXX” of the user A and the individual monitoring area “area A” of the user A are associated with each other. User B's identification code “YYYYY” and user B ’s individual monitoring area “area B (area B1, area B2)” are associated with each other, and the identification code “ZZZZZ” of user C is used. The individual monitoring area “area C (area C1, area C2)” of the person C is associated.

  In contrast to this, by storing the range in which entry is permitted (for example, the shaded area in FIG. 7), the range in which entry is not permitted (for example, the range surrounded by the thick line in FIG. 7). May be identified. Also, the designation of the individual monitoring area can be realized by dividing the image data into a plurality of small areas and then designating the corresponding small areas, and a plurality of preset pre-set image data. It can also be realized by selecting a corresponding pattern from the patterns.

  The occupant information includes the identification code of the user who is currently in the restricted area based on the identification code of the user who has entered the room and the identification code of the user who has left the room received from the access control device 10. The code is memorized. FIG. 5B is a diagram showing an example of the occupant information. In this example, the users A, B, and C enter the room and the user C leaves the room. The identification code “XXXX, YYYYY” of B is stored as occupant information.

  In the monitoring setting information, information on the monitoring area in the current restricted area image set by the control unit 23 is stored. The setting of the monitoring area will be described later with reference to the drawings. FIG. 5C shows an example of monitoring setting information. In this example, “area B2” is set as monitoring area information set when the users A and B are in the room. It is remembered.

  In the illumination information, the unit of the illumination device 7 corresponding to each individual monitoring area and the current on / off state of each illumination unit are stored. FIG. 5D is a diagram showing an example of the illumination information. In this example, the unit “lighting A1, A2” of the lighting device 7 corresponding to the individual monitoring region “region A” and the current on / off state are shown. The off state “illumination A1: on, illumination A2: on” is stored. Further, the unit “lighting B1, B2” of the lighting device 7 corresponding to the individual monitoring region “area B” and the current on / off state “lighting B1: on, lighting B2: on” are stored. Further, the unit “lighting C1, C2” of the lighting device 7 corresponding to the individual monitoring region “area C” and the current on / off state “lighting C1: off, lighting C2: off” are stored.

  As a functional module, the control unit 23 includes a monitoring area setting unit 28 that sets a monitoring area in the restricted area image according to a user who has entered the restricted area, and a monitoring area set in the restricted area image. An abnormality determination unit 29 that determines whether or not there is an abnormality in the restricted area based on the fluctuations that occur, and an illumination control unit 30 that performs control to turn on the illumination device 7 corresponding to the monitoring area set in the restricted area image. .

  The monitoring area setting unit 28 receives the identification code of the user who has entered the restricted area or the identification code of the user who has left the room from the identification information acquisition unit 26, based on the received identification code. Update occupant information. Then, the individual monitoring area corresponding to the identification information stored in the current occupant information is read from the user area information, and the monitoring area is set in the restricted area image. For example, when the number of people in the room is one, the individual monitoring area of this user is set as the monitoring area of the image data. When there are a plurality of people in the room, the monitoring area is set in the restricted area image by combining the individual monitoring areas of the plurality of users. More specifically, when there are a plurality of occupants, the monitoring area setting unit 28 obtains a logical product of the individual monitoring areas of the occupants and overlaps the individual monitoring areas. A part is extracted, and the obtained area is set as a monitoring area in the restricted area image. In other words, it can be said that the monitoring area is an area obtained by ORing the logical sum of the ranges in which each occupant is allowed to enter. Information on the monitoring area set in this way is stored in the monitoring setting information in the storage unit 24.

  In addition, when the user leaves the restricted area, the monitoring area setting unit 28 responds to the user who has left the room from the current monitoring area setting conditions set at the time of leaving the room after a predetermined time from the user's leaving. The monitoring area set under the condition excluding the individual monitoring area to be reset is reset as a new monitoring area. That is, the monitoring area is reset by AND-joining the individual monitoring areas of those who remain in the restricted area. For example, the new monitoring area is reset 30 seconds after the user leaves the room. This ensures a time margin for notifying the user (remaining user) that the monitoring area has been reset. The notification of the resetting may be performed by sound from a speaker or may be performed by displaying video on a display or the like.

  The abnormality determination unit 29 refers to the monitoring area information stored in the monitoring setting information, and determines the presence / absence of an abnormality from the variation of the monitoring area set in the restricted area image input from the image acquisition unit 25. For example, the monitoring area set in the restricted area image is compared with past image data, and a fluctuation area composed of fluctuation pixels whose luminance value fluctuation is greater than or equal to a predetermined value is extracted, and the fluctuation area is equal to or greater than the predetermined area. It is determined that an abnormality has occurred. There are various known methods for extracting a variable region, such as an inter-frame difference method based on a difference from the immediately preceding image data, and a background difference method based on a difference from previously acquired image data, and detailed description thereof is omitted here. .

  When the occupant information in the storage unit 24 is updated and the monitoring area information is stored in the monitoring setting information, the lighting control unit 30 reads the corresponding lighting unit from the lighting information and sets the current on / off state. Compare. If the lighting unit corresponding to the newly set monitoring area is different from the current on / off state, the lighting apparatus 7 is controlled to be turned on / off so that the lighting apparatus 7 corresponding to the monitoring area is turned on. Here, the lighting of the lighting device 7 corresponding to the monitoring area means, for example, that the lighting device 7 in an area other than the monitoring area (area where user access is permitted) is turned on, and the monitoring area (user access) This is to turn off the illumination device 7 in the area where is prohibited. By lighting the lighting device 7 corresponding to the monitoring area in this way, it is possible to notify the user in the restricted area which area is set as the monitoring area by the presence or absence of illumination. Here, the lighting device 7 is used to notify the user which region is set as the monitoring region, but it goes without saying that the user may be notified using voice.

  Here, the restricted area image photographed by the monitoring camera 6, the individual monitoring area for each user, and the monitoring area set according to the user in the room will be described with reference to the drawings. In the following example, two users (users A, B) out of three users (users A, B, C) who can enter the locker room are in the locker room. Will be described.

  FIG. 6 is a diagram illustrating an example of a restricted area image. In FIG. 6, the image (restricted area image) which image | photographed the locker room which is a restricted area with the monitoring camera 6 is illustrated. Although it does not appear in this image, there is a door for entering a restricted area (locker room) in the lower left part of the figure. In the example of FIG. 6, no user is present in the locker room.

  FIG. 7 is a diagram illustrating an example of individual monitoring areas set in such a restricted area image. FIG. 7A shows an example of the individual monitoring area of the user A of the locker A (left locker). In this example, the right range (area A surrounded by a thick line) from the locker B (central locker) is set as the individual monitoring area of the user A.

  Moreover, the example of the individual monitoring area | region of the user B of the locker B (central locker) is shown by FIG.7 (b). In this example, the range from the locker A (left locker) to the left (area B1 surrounded by a thick line) and the range from the locker C (right locker) to the right (area B2 surrounded by a thick line) It is set as a monitoring area.

  Moreover, the example of the individual monitoring area | region of the user C of the locker C (right locker) is shown by FIG.7 (c). In this example, a left range (region C1 surrounded by a thick line) from the locker B (central locker) and a right range (region C2 surrounded by a thick line) away from the locker C (right locker) are the user C. Is set as an individual monitoring area.

  FIG. 8 is a diagram illustrating an example of a monitoring area that is set when two users (users A and B) are present in the locker room. As shown in FIG. 8, in this case, an area “area B2” obtained by AND-joining the individual monitoring area “area A” of user A and the individual monitoring area “area B” of user B is obtained. Set as a monitoring area. Note that the area other than the monitoring area (shaded area in FIG. 8) may be masked so as to be displayed dark on the monitor of the monitoring center 8.

  The operation of the monitoring system 1 configured as described above will be described with reference to the drawings.

  FIG. 9 is a flowchart for explaining the operation of the monitoring system 1 in the embodiment of the present invention. As shown in FIG. 9, when monitoring a user in a restricted area using the monitoring system 1, first, the image monitoring apparatus 5 determines whether or not an identification code has been received from the access management apparatus 10 (S1). When the identification code of the user who has been determined to be allowed to enter the restricted area or the identification code of the user who has left the restricted area has been received, the process of setting or changing the monitoring area in the restricted area image (monitoring Setting process) is performed (S2). If the monitoring area is set in the restricted area image as a result of the monitoring setting process (S3), it is determined whether or not there is a change in the monitoring area (S4), and the monitoring area changes. If there is an error, an abnormality is output to the monitoring center 8 because an abnormality has occurred in the restricted area (S5).

  FIG. 10 is a flowchart for explaining the flow of the monitoring setting process. In the monitoring setting process, when the identification code is received from the access management device 10, first, the image monitoring device 5 updates the occupant information in the storage unit 24 (S20). Then, the presence / absence of a room occupant is determined (S21). If there is no room occupant, the entire restricted area image is set as a monitoring area (S22). On the other hand, when the occupant is present, it is determined whether or not the occupant is the person to be monitored (S23). If the occupant is not the person to be monitored, the setting of the monitoring area is canceled (S24). The resident who is not the person to be monitored is, for example, a cleaning company or a manager. On the other hand, if the occupant is a person to be monitored, the individual monitoring area corresponding to the occupant is read (S25). If there is only one occupant (S26), The individual monitoring area of the room person is set as the monitoring area (S27). On the other hand, when there are a plurality of people in the room, an area obtained by AND-joining the individual monitoring areas of those persons in the room is set as the monitoring area (S28). When the monitoring area is set, the lighting device 7 is turned on / off corresponding to the monitoring area. Further, when the monitoring area is reset for a user who remains in the restricted area as the user leaves the room, the resetting is performed after a predetermined time (for example, 30 seconds) after the user leaves the room.

  According to such a monitoring system 1 of the present embodiment, the monitoring area can be dynamically set in the restricted area image according to the user who has entered the restricted area (locker room). It is not necessary to use a specific partition, the burden of constant monitoring by the supervisor can be reduced, and monitoring according to the access authority for each user can be easily realized.

  That is, in this embodiment, when a user enters or exits (enters or leaves the restricted area), the identification information acquisition unit 26 acquires the identification code of the user. In the image (restricted area image) obtained by photographing the restricted area with the monitoring camera 6, an area to be monitored for each user (area where the user's access is prohibited) is set, and the user enters the restricted area. The individual monitoring area corresponding to the user identification code is set as the monitoring area in the restricted area image. For example, when there is only one user entering the restricted area, the individual monitoring area of that user is set as the monitoring area (see FIG. 7), and there are a plurality of users entering the restricted area. In the case of a person, an area obtained by combining the individual monitoring areas of the plurality of users is set as the monitoring area (see FIG. 8). When a change occurs in the monitoring area in the restricted area image, it is determined that there is an abnormality in the restricted area.

  As described above, in this embodiment, by setting a monitoring area for each user in an image obtained by capturing the restricted area, it is possible to monitor the user's behavior in the restricted area. In other words, instead of providing a physical partition in the restricted area, an area in which the restricted area (entire area) should be monitored for each user by providing a virtual partition in the image of the restricted area. It is possible to divide into (partial areas) and monitor the user's behavior in that area (monitoring area). Therefore, when monitoring the users in the restricted area, the burden of constant monitoring by the monitor at the monitoring center 8 is reduced. In addition, the layout of this monitoring area can be dynamically changed according to the user who has entered the restricted area. In other words, unlike a physical partition, a virtual partition does not require installation work, and is not subject to restrictions such as floor plan, so it depends on the users who enter the restricted area. Can be installed easily. As described above, according to the present embodiment, it is possible to reduce the burden of constant monitoring by a monitor without using a physical partition, and to realize monitoring according to the access authority for each user.

  In this embodiment, when there are a plurality of users entering the restricted area, the individual monitoring areas (areas where each user's access is prohibited) of the plurality of users are ANDed. Then, an area obtained by extracting an overlapping portion between the individual monitoring areas is set as a monitoring area (see FIG. 8). In other words, it can be said that this monitoring area is an area obtained by OR-joining the areas permitted to be accessed by each user. In this way, when there are a plurality of users entering the restricted area, the monitoring area can be set appropriately.

  In the present embodiment, when a user leaves the restricted area, a monitoring area (new monitoring area) is created from the individual monitoring area of the current occupant under the conditions excluding the individual monitoring area of the user. Will be reset. Since this new monitoring area is reset after a predetermined time (for example, 30 seconds) after the user leaves the room, if another user remains in the restricted area, the user (remaining) Users) can be assured of a time margin for notifying that the monitoring area has been reset. Therefore, it is possible to reduce the possibility that the user who remains in the restricted area enters the monitoring area without knowing that the monitoring area has been reset, and is erroneously detected and reported as an abnormal occurrence. This resetting notification may be performed by sound from a speaker or may be displayed as an image on a display.

  In the present embodiment, when a monitoring area is set, the lighting device 7 corresponding to the monitoring area is turned on, so that the user in the restricted area can determine which area is set as the monitoring area. You can know by the presence or absence of lighting. Here, the lighting of the lighting device 7 corresponding to the monitoring area means, for example, that the lighting device 7 in an area other than the monitoring area (area where user access is permitted) is turned on, and the monitoring area (user access) This is to turn off the illumination device 7 in the area where is prohibited. Further, the illumination device 7 in an area other than the monitoring area (area where the user's access is permitted) is turned on with white light, and the illumination apparatus 7 in the monitoring area (area where the user's access is prohibited) is turned on with red light or the like. It may be turned on.

  The embodiments of the present invention have been described above by way of example, but the scope of the present invention is not limited to these embodiments, and can be changed or modified according to the purpose within the scope of the claims. is there.

  As described above, the image monitoring apparatus according to the present invention does not need to use a physical partition, can reduce the burden of constant monitoring by the monitor, and can easily monitor according to the access authority for each user. Therefore, the present invention can be applied to a monitoring system or the like for monitoring a user in a restricted area with an image.

DESCRIPTION OF SYMBOLS 1 Monitoring system 2 Door 3 Card reader 4 Electric lock control apparatus 5 Image monitoring apparatus 6 Monitoring camera 7 Illumination apparatus 8 Monitoring center 9 Monitoring terminal 10 Entrance / exit management apparatus 11 Electric lock 12 Control part 13 Reading part 14 Storage part 15 Display part 16 Communication interface 17 Control unit 18 Storage unit 19 Communication interface 20 Electric lock control unit 21 Identification information receiving unit 22 Determination unit 23 Control unit 24 Storage unit 25 Image acquisition unit 26 Identification information acquisition unit 27 External device interface 28 Monitoring area setting unit 29 Abnormal Judgment unit 30 Lighting control unit

Claims (4)

An image monitoring device that monitors a user in the restricted area using a restricted area image obtained by photographing the restricted area with a surveillance camera,
An identification information acquisition unit for acquiring identification information of a user entering the restricted area;
An image acquisition unit for acquiring image data of the restricted area image;
A storage unit that stores the individual monitoring area set in the restricted area image and the identification information of the user in advance as the area information for each user;
A monitoring area setting unit that sets an individual monitoring area corresponding to identification information of a user who has entered the restricted area as a monitoring area in the restricted area image;
An abnormality determination unit that determines presence / absence of an abnormality in the restricted area based on a variation that occurs in the monitoring area set in the restricted area image;
Equipped with a,
The monitoring area setting unit
When a plurality of users enter the restricted area, an area obtained by AND-joining individual monitoring areas corresponding to identification information of each user is set as the monitoring area , Image monitoring device. The monitoring area setting unit
If the user from the restricted area to exit the claim 1, wherein after a predetermined from the user's exit time, resets the new monitoring area based on the individual monitoring area corresponding to the user who is currently entrance The image monitoring apparatus according to 1. The storage unit stores information on the lighting device corresponding to each individual monitoring area in the lighting device installed in the restricted area,
The image monitoring apparatus further the monitoring region image monitoring apparatus according to claim 1 or 2 comprising a lighting control unit for lighting the lighting device corresponding to the set the monitoring area. A monitoring system comprising an entry / exit management device for managing entry / exit of a user to / from a restricted area, and an image monitoring device for monitoring a user in the restricted area using a restricted area image obtained by photographing the restricted area with a surveillance camera. There,
The access control device
An authentication information storage unit for storing identification information of users who can enter and exit the restricted area;
An identification information receiving unit for receiving identification information input by a user who enters the restricted area and a user who leaves the restricted area;
A determination unit that determines whether the user can go in and out by checking the identification information input by the user;
An output unit that outputs the identification information of the user determined to be able to enter and exit to the image monitoring device;
The image monitoring device includes:
An identification information acquisition unit for acquiring identification information of the user determined to be allowed to enter and exit from the access control device;
An image acquisition unit for acquiring image data of the restricted area image;
A storage unit that stores the individual monitoring area set in the restricted area image and the identification information of the user in advance as the area information for each user;
A monitoring area setting unit that sets an individual monitoring area corresponding to identification information of a user who has entered the restricted area as a monitoring area in the restricted area image;
An abnormality determination unit that determines presence / absence of an abnormality in the restricted area based on a variation that occurs in the monitoring area set in the restricted area image;
Equipped with a,
The monitoring area setting unit
When a plurality of users enter the restricted area, an area obtained by AND-joining individual monitoring areas corresponding to identification information of each user is set as the monitoring area , Monitoring system.