JP2010209592A - Unlocking permission device and unlocking permission method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a lock from being illegally unlocked by utilizing the images picked up by a monitor camera in a safe which is locked and unlocked by electronic control. <P>SOLUTION: This unlocking permission device includes an image signal input part into which image signals are input, an image analyzing part which detects the number of persons present within a predetermined area before an opening/closing part to be locked and unlocked by analyzing the image signals, and an unlock condition determination part which does not provide a permission of unlocking to a locking and unlocking control unit for controlling an electric lock for locking and unlocking the opening/closing part. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a technique for preventing unauthorized unlocking using an image of a surveillance camera in a safe or the like that is locked and unlocked by electronic control.

  For example, when unlocking a safe installed in a safe room of a bank or the like, it is usually unlocked by two persons, an unlocker and a witness, to prevent unauthorized opening. I am trying to do the work. Whether or not an unauthorized unlocking operation is being performed is confirmed by monitoring the video in front of the safe taken by the monitoring camera by a person at all times or by reproducing the video at a later date.

However, it is very burdensome for a person to constantly monitor and monitor the video of the surveillance camera, and the economic burden is large. Further, in the method of confirming the video at a later date, the fact that the unauthorized unlocking has been performed can be found, but the fraud itself cannot be protected.
The present invention has been made to solve the above-described problems, and an object thereof is to provide an unlocking permission device and an unlocking permission method for preventing unauthorized unlocking by using a video of a surveillance camera. And

In order to achieve the above object, an unlocking permission device according to the present invention includes a video signal input unit for inputting a video signal and a predetermined range in front of the opening / closing unit to be unlocked by analyzing the video signal. The video analysis unit for detecting the number of persons present in the screen and the unlocking control device for controlling the electric lock for unlocking and unlocking the opening / closing unit when the number of detected persons is not two And an unlocking condition determination unit that does not give permission.
Further, the unlocking permission method of the present invention for granting unlocking permission to the unlocking control device for controlling the electric lock for unlocking and unlocking the opening / closing part is based on the video signal of the surveillance camera for photographing the front of the opening / closing part. A first step of generating a still image by inputting, a second step of detecting the number of persons appearing within a predetermined range in the generated image, and at least the number of detected persons Only when there are two persons, a third step of granting unlocking permission to the locking / unlocking control apparatus is provided.

  According to the present invention, it is possible to prevent unauthorized unlocking by a single offender or unauthorized unlocking by three or more crimes.

It is a connection block diagram which shows the example of the connection form of an unlocking permission apparatus. It is the arrangement | positioning figure which showed the example of installation of the monitoring camera to a safe room. 2 illustrates an image captured by a surveillance camera. It is a block diagram which shows the structure of an unlocking permission apparatus. It is a flowchart of a 1st unlocking condition determination process. It is a flowchart of a 2nd unlocking condition determination process. It is a flowchart of a 3rd unlocking condition determination process.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a mode for carrying out the present invention will be described in detail with reference to the drawings as appropriate, taking as an example a case where the present invention is applied to a safe installed in a safe room such as a bank.
FIG. 1 is a connection configuration diagram showing an example of a connection form of an unlocking permission device according to the present invention.

  The safe room 1 includes a safe 2 having an opening / closing part that is locked and unlocked by an electric lock 21 controlled by the lock / unlock control device 3, and a monitoring camera 4 that captures an image of the inside of the safe room 1. . The video signal captured by the monitoring camera 4 is transmitted to the monitoring terminal 6 and the unlocking permission device 7 via the communication line 5. The monitoring terminal 6 projects the video of the monitoring camera 4 on the screen so that a person can visually confirm the situation in the safe room 1 and records the video on a hard disk, DVD, or the like.

  The unlocking permission device 7 analyzes the video of the monitoring camera 4 to determine whether or not a regular unlocking operation is performed, and only when the regular unlocking operation is performed An unlocking permission signal is transmitted to the lock control device 3. When the unlocking operation unit 32 performs the unlocking operation, the locking / unlocking control device 3 is operated by the electric lock control unit 31 only when the unlocking permission signal is transmitted from the unlocking permission device 7. 21 is unlocked, and the electric lock 21 is not unlocked otherwise.

  Thus, only when the unlocking permission device 7 analyzes the video of the monitoring camera 4 and determines that the unlocking operation is proper, the unlocking operation can unlock the electric lock 21 and open the safe door. it can.

FIG. 2 is a layout diagram illustrating an example of installation of the monitoring camera 4 in the vault 1.
The surveillance camera 4 captures the entire body of the unlocking person 8 and the witness 9 in the designated area provided on the floor surface in front of the safe 2 in the imaging range 41 indicated by the broken line in FIG. As described above, it is installed on the ceiling surface almost directly above the safe 2. The surveillance camera 4 is preferably protected by a protective glass or the like so that it cannot be touched or broken by humans, and exposure of the surveillance camera 4 is preferably prevented by embedding cables such as a power source in a wall surface. Further, not only one surveillance camera but also a plurality of surveillance cameras may be installed.

  FIG. 3 illustrates an image captured by the monitoring camera 4 installed at the position shown in FIG. In the image of FIG. 3, the upper surface of the safe 2, a frame line 42 indicating the range of the designated area, and the unlocker 8 and the witness 9 within the designated area are shown.

  The designated area indicated by the frame line 42 is a place where only the unlocking person 8 and the witness 9 should enter during the unlocking operation, and only the inside of the designated area as a predetermined range is the unlocking permission device 7. The number of people and armbands are subject to detection.

  The method of clearly indicating the range of the designated area is not limited to the frame line 42 shown in FIG. 3, and any mark that can recognize the boundary line may be installed on the floor surface. You may make it change the color of. Or you may make it consider the predetermined area | region in the image | photographed image | video as a designated area, without performing such explicit on a floor surface. Further, the entire area in the safe room 1 may be designated as the designated area.

  In the example of FIG. 3, both the unlocker 8 and the witness 9 wear the armband 10 on the arm, but the armband 10 will be described later.

FIG. 4 is a block diagram showing a configuration of the unlocking permission device 7.
As shown in FIG. 4, the unlocking permission device 7 includes a display operation unit 71, a data input unit 72, a video signal input unit 73, a communication unit 74, a control unit 75, and a storage unit 76. Composed.

The display operation unit 71 includes a display (not shown) for displaying various operation guidance and an input screen, an operation key (not shown) for receiving a user operation, and the like.
The data input unit 72 receives input of data stored in an external storage medium or the like.
The video signal input unit 73 has a function of converting a video signal transmitted from the surveillance camera 4 into digital still image data.
The communication unit 74 transmits an unlocking permission signal or an unlocking prohibition signal to the locking / unlocking control device 3 in accordance with an instruction from the control unit 75.

  The storage unit 76 includes a nonvolatile storage device such as a hard disk device, and includes a person pattern storage unit 91, an armband pattern storage unit 92, an unlocking condition storage unit 93, and a determination history storage unit 94.

The person pattern storage unit 91 stores various image patterns that are referred to in order to detect a person image from the video of the monitoring camera 4, and the armband pattern storage unit 92 stores armband image patterns to be detected. Remembered.
The unlocking condition storage unit 93 stores unlocking permission conditions to be described later, and the determination history storage unit 94 stores the unlocking condition determination history along with the date and time.

The control unit 75 executes various types of control necessary for the operation of the unlocking permission device 7 according to a predetermined program, and includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory) not shown. ) And the like, and each function of the pattern registration unit 81, the unlocking condition registration unit 82, the video acquisition unit 83, the video analysis unit 84, and the unlocking condition determination unit 85 is provided.

The pattern registration unit 81 fetches image data of a person or an armband from the data input unit 72 or the video signal input unit 73 in accordance with a user operation by the display operation unit 71 and stores the image data in the person pattern storage unit 91 and the armband pattern storage unit 92, respectively. Remember.
The unlocking condition registration unit 82 stores the unlocking conditions described later in the unlocking condition storage unit 93 in accordance with a user operation by the display operation unit 71.

The video acquisition unit 83 acquires digital still image data generated from the video signal of the monitoring camera 4 from the video signal input unit 73 as video data.
The video analysis unit 84 refers to the image data stored in the person pattern storage unit 91 and the armband pattern storage unit 92, so that the image pattern of the person or armband is selected from the video data acquired by the video acquisition unit 83. Is detected, the number of persons included in the video data is counted, and it is determined whether each person is wearing a predetermined armband 10.

  The unlocking condition determination unit 85 determines whether or not the state of the image obtained by imaging the designated area in front of the safe 2 satisfies the unlocking condition stored in the unlocking condition storage unit 93, and satisfies the unlocking condition. If so, an unlocking permission signal for permitting unlocking of the electric lock 21 is transmitted from the communication unit 74 to the unlocking control device 3. .

    As patterns of unlocking conditions determined by the unlocking condition determining unit 85, for example, the following three types are prepared, and the user selects an unlocking condition that matches the actual operation rule, and the unlocking condition is determined. The registration unit 82 stores it in the unlocking condition storage unit 93.

(1) [Unlocking condition A]: When the number of people in the designated area is two, unlocking is permitted.
(2) [Unlocking condition B]: It is assumed that both unlocking person 8 and witness 9 are required to perform the unlocking operation by wearing a predetermined armband 10 clearly indicating the unlocking authority (see FIG. 3). ) When the number of persons in the designated area is two and both of them wear the predetermined armband 10, the unlocking is permitted.
(3) [Unlocking condition C]: Unlocker 8 wears an unlocker's armband 10a that clearly indicates the unlocking authority, and witness 9 wears an witness's armband 10b that clearly indicates the authority to witness. It is assumed that the lock work is required (see Fig. 3), the number of people in the designated area is two, one for the unlocker armband 10a, and the other for the witness When the armband 10b is worn, unlocking is permitted.

  The processing content of the unlocking condition determination unit 85 in the control unit 75 changes according to the type of unlocking condition stored in the unlocking condition storage unit 93. Hereinafter, the processing flow of the unlocking condition determination unit 85 corresponding to the three types of unlocking conditions will be sequentially described with reference to FIGS. 5 to 7.

FIG. 5 shows a flowchart of the unlocking condition determination process for the unlocking condition A.
First, the unlocking condition determination unit 85 causes the video acquisition unit 83 to acquire a still image in front of the safe 2 from the video signal transmitted from the monitoring camera 4 in step S1.
Next, the unlocking condition determination unit 85 causes the video analysis unit 84 to detect the number of persons in the designated area in the acquired image in step S2. Specifically, the video analysis unit 84 detects an image pattern that matches, for example, the image data of the human head stored in the person pattern storage unit 91 from the images in the designated area, and determines the number of the image patterns. Count.

  Subsequently, in step S3, the unlocking condition determination unit 85 determines whether the detected number of people in the designated area is two. If the number is two (“Yes” in step S3), the process proceeds to step S4. Branch and transmit an unlocking permission signal to the unlocking control device 3. On the other hand, if the number of persons is not two ("No" in step S3), the process branches to step S5 and transmits an unlocking prohibition signal to the locking / unlocking control apparatus 3. Thereafter, both return to step S1 and repeat the above-described processing.

FIG. 6 shows a flowchart of the unlocking condition determination process for the unlocking condition B.
Since the processing when “No” in steps S1, S2 and S3 is the same as described above, the description thereof is omitted.

  In step S3, when the number of persons in the designated area detected is two (“Yes” in step S3), the unlocking condition determination unit 85 branches to step S31 and is acquired by the video analysis unit 84. The number of wearers of the armband 10 in the designated area in the image is detected (see FIG. 3). Specifically, the video analysis unit 84 detects an image pattern that matches the image data of the armband 10 stored in the armband pattern storage unit 92 from the images in the designated area, and counts the number thereof. Since the image of the armband 10 may be hidden behind a person's shadow and may not be seen, it is desirable to detect the maximum value within a predetermined time (for example, 10 seconds). Next, the unlocking condition determination unit 85 determines whether or not the detected number of armband wearers is two in step S32, and if the number is two (“Yes” in step S32), the process proceeds to step S4. Branch and transmit an unlocking permission signal to the unlocking control device 3. On the other hand, if the number of persons is not two (“No” in step S32), the process branches to step S5 and transmits an unlocking prohibition signal to the locking / unlocking control apparatus 3. Thereafter, the process returns to step S1 as described above.

FIG. 7 is a flowchart of the unlocking condition determination process for the unlocking condition C.
Since the processing when “No” in steps S1, S2 and S3 is the same as described above, the description thereof is omitted.

  In step S3, when the number of persons in the designated area detected is two (“Yes” in step S3), the unlocking condition determination unit 85 branches to step S33 and causes the video analysis unit 84 to enter the designated area. The person wearing the armband 10a for the unlocker is detected, and the person wearing the armband 10b for the witness is also detected in step S34 (see FIG. 3). Specifically, the video analysis unit 84 selects an image pattern that matches the image data of the unlocker armband 10a and the witness armband 10b stored in the armband pattern storage unit 92 from the images in the designated area. Are detected, and the number of them is counted. Next, in step S35, the unlocking condition determination unit 85 determines whether or not a wearer has been detected for both arm chapters, that is, whether or not the number of both arm chapters detected is one. When the unlocking condition determination unit 85 detects the wearer for both armbands (“Yes” in step S35), the process branches to step S4 and transmits an unlocking permission signal to the unlocking control device 3. On the other hand, when a wearer of either one or both armbands is not detected (“No” in step S35), the process branches to step S5 and transmits an unlocking prohibition signal to the unlocking control device 3. Thereafter, the process returns to step S1 as described above.

  The result of the unlocking condition determination process described above is stored as a history in the determination history storage unit 94, but the control unit 75 receives a signal transmitted to the unlocking control device 3 from the unlocking prohibition signal. Only when the permission signal is changed or when the unlocking permission signal is changed to the unlocking prohibition signal, the determination history storage unit 94 stores it as a history.

  In the above description, the unlocking permission device 7 transmits an unlocking permission signal or an unlocking prohibition signal every time an image is acquired, but unlocking permission for a predetermined time (for example, 5 seconds) is assumed. It is also possible to count the number of times that the unlocking is prohibited and transmit a signal only when the predetermined number of times is exceeded. Alternatively, the unlocking permission signal may be transmitted only when the unlocking permission determination continues for a predetermined number of times. Further, only the unlocking permission signal may be transmitted without using the unlocking prohibition signal, and when the unlocking permission signal is not transmitted, it may be determined that unlocking is not permitted. .

  Further, in the above-described embodiment, an example using an armband as an object that clearly indicates the unlocking authority and the witnessing authority has been described. You may make it wear.

  Furthermore, in the above-described embodiment, an example in which the present invention is applied to a safe installed in a safe room such as a bank has been described. However, the present invention can also be applied to unlocking an entrance door to an area requiring security enhancement. is there.

  As described above, according to the present invention, since the unlocking permission is not given unless the unlocking operation is performed by two people, it is possible to prevent unauthorized unlocking by a single offender or a plurality of three or more offenders. . Furthermore, by using the authority explicitly by armbands or the like, it is possible to prevent unauthorized unlocking with an unauthorized third party. Thereby, the trouble of reproducing and confirming the video of the surveillance camera at a later date can be reduced.

DESCRIPTION OF SYMBOLS 1 Safe room 2 Safe 3 Locking / unlocking control device 4 Surveillance camera 5 Communication line 6 Monitoring terminal 7 Unlocking permission device 8 Unlocking person 9 Witness 10, 10a, 10b Armband 21 Electric lock 73 Video signal input part 75 Control part 76 storage unit 81 pattern registration unit 82 unlocking condition registration unit 83 video acquisition unit 84 video analysis unit 85 unlocking condition determination unit 91 person pattern storage unit 92 armband pattern storage unit 93 unlocking condition storage unit 94 determination history storage unit

Claims (6)

A video signal input unit for inputting a video signal;
Analyzing the video signal, a video analysis unit for detecting the number of persons existing in a predetermined range before the opening and closing unit to be locked and unlocked,
An unlocking condition determination unit that does not give an unlocking permission to an unlocking control device that controls an electric lock for unlocking and unlocking the opening and closing unit when the number of detected persons is not two; Unlocking permission device characterized by. The video analysis unit further analyzes the video signal and detects the number of persons wearing a thing clearly indicating the unlocking authority of the opening and closing unit existing within the predetermined range,
The unlocking condition determination unit further permits unlocking to the unlocking control device that controls the electric lock even when the number of persons wearing the object clearly indicating the unlocking authority is not two. The unlocking permission device according to claim 1, wherein the unlocking permission device is not given. The video analysis unit further analyzes the video signal and presents within the predetermined range the number of persons wearing objects that clearly indicate the unlocking authority of the opening / closing unit existing within the predetermined range. Detecting the number of persons wearing an object that clearly indicates the authority to witness the unlocking of the opening and closing unit;
The unlocking condition determination unit further includes one person who is wearing the object clearly indicating the unlocking authority and one person who is wearing the object clearly indicating the presence authority. The unlocking permission device according to claim 1, wherein unlocking permission is not given to the unlocking control device that controls the electric lock except in some cases. The unlocking permission device according to claim 2 or 3, wherein the thing that clearly indicates the unlocking authority and the object that clearly indicates the authority to witness are armbands. The unlocking permission device according to any one of claims 1 to 4, wherein a mark indicating a boundary line of the predetermined range is arranged on a floor surface in front of the opening / closing part. An unlocking permission method for giving unlocking permission to an unlocking control device for controlling an electric lock for unlocking and opening the opening and closing part,
A first step of generating a still image by inputting a video signal of a surveillance camera that images the front of the opening / closing unit;
A second step of detecting the number of persons appearing within a predetermined range in the generated image;
A unlocking permission method, comprising: a third step of not granting unlocking permission to the locking / unlocking control apparatus except when the detected number of persons is two.

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