JP2011195227A - Tracking photographing system for crime prevention for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure a closeup image of a face usable to establish crime etc. within a riding car.SOLUTION: This tracking photographing system for crime prevention for an elevator includes: a door opening detection sensor 14 detecting and outputting the door opening state of an elevator door; a monitoring camera 21 with a pan tilting mechanism 22 shooting an image of an object entering inside of the riding car 2; and a face authentication tracking processing device 5. The face authentication tracking processing device 5 includes: a face authentication processing part 31 recognizing whether or not the object in the image taken by the monitoring camera 21 is a human and authenticating, when recognizing that the object is a human, the face position of the human; and a tracking photographing processing part 32 tracking the object so that the monitoring camera 21 faces the face position via the pan tilting mechanism 22 in accordance with the authenticated face position, adjusting the focus after zooming up the image so as to obtain a closeup image of the face with predetermined size and shooting and recording the closeup image of the face of the human.

Description

  The present invention relates to an elevator crime prevention tracking photographing system for photographing an elevator user in an elevator car.

  The conventional general security photography system has a surveillance camera fixedly installed on the ceiling of a car, etc., and captures and accumulates images in the cage taken by the surveillance camera at predetermined intervals. It is the structure which extracts the image area | region of an elevator user from the, and displays it on the monitor apparatus installed in a passenger car (patent document 1).

  Further, conventionally, without providing a monitor device in the car, images in the car photographed by the surveillance camera are recorded in time series on the video recording device, and the images recorded when necessary are recorded on another recording medium. The thing of the structure displayed on display parts, such as a management room and a monitoring center, is developed.

JP 2009-227450 A

  However, the crime prevention photographing system as described above always shoots the same place in the car with a surveillance camera and displays it on a monitor device or records it on a video recording device.

  Therefore, there is a problem that it is difficult to take an image when the imaging area of the surveillance camera is narrow and the elevator user in the car moves.

  In addition, since the image of the elevator user taken by the surveillance camera is displayed on the monitor device in the car, there is an effect of deterring crime, but conversely, if you move to the shooting spot while looking at the display image of the monitor device If it becomes impossible to take a picture, or if the face is intentionally turned away from the surveillance camera or the face is intentionally hidden with a hat, the necessary picture cannot be taken.

  As a result, after a crime occurs in the car, even if the recorded image is played back, it is difficult to recognize the criminal's face, or a sufficient face image for verifying the crime cannot be obtained. There is.

  The present invention has been made to solve the above-described problems, and tracks the position of the elevator user's face, takes a face-up image of the elevator user, and can be used effectively for crimes and the like. It is an object of the present invention to provide a crime prevention tracking photographing system for obtaining an image.

  In order to solve the above-mentioned problems, an elevator crime prevention tracking shooting system according to the present invention is installed in a car, a door open detection sensor that detects and outputs a door open state of the elevator door, and is installed in the car. After the surveillance camera equipped with a pan / tilt mechanism for photographing an incoming subject and the door open state from the output signal of the door opening detection sensor, the surveillance camera took a picture under the photographing start instruction. Based on the face authentication processing means for recognizing whether the subject in the image is a human and authenticating the human face position from the captured image when the subject is recognized as a human being, and the face position authenticated by the face authentication processing means The surveillance camera tracks through the pan / tilt mechanism so that it faces the face position, and after the zoom-in process of the face image, focus adjustment is performed, and the corresponding human face-up image is photographed and recorded. That a configuration in which a face authentication tracking processing apparatus having a tracking photographing processing means.

  Another invention is an image recording apparatus for recording a human face-up image together with shooting date / time data of the face-up image when the human face-up image is newly recorded in the configuration. Further, a configuration may be provided in which a display device that reproduces and displays a human face-up image recorded in the image recording device is provided.

  According to the present invention, the face position of the elevator user entering the car is authenticated, and the face image of the face is taken by tracking the authenticated face position, so it is effectively used for verifying crimes and the like. It is possible to provide an elevator crime prevention tracking photographing system capable of obtaining a possible face image.

The block diagram which shows one Embodiment of the tracking imaging | photography system for crime prevention of the elevator which concerns on this invention. The figure explaining the structure of a camera imaging | photography part. The functional block block diagram of the face authentication tracking processing apparatus shown in FIG. The flowchart explaining a series of operation | movement procedures of the tracking imaging | photography system for crime prevention of the elevator which concerns on this invention. The array example figure of the data preserve | saved at an internal memory part. The array example figure of the required item data for searching each human face-up image recorded on an image recording device.

  FIG. 1 is a configuration diagram showing an embodiment of an elevator crime prevention tracking photographing system according to the present invention.

  The elevator tracking and shooting system for elevators is installed in a car 2 running in the hoistway 1 of the building, and at an appropriate location on the ceiling or side plate of the car 2, and the elevator that has entered the car 2 is used. The camera photographing unit 4 for photographing the person 3 and the face of the elevator user 3 photographed by the camera photographing unit 4 installed in the upper part of the car 2 or in the elevator control device (not shown) A face authentication tracking processing device 5 that tracks the position and performs face-up shooting, an image recording device 6 that reproducibly records the face-up image of the elevator user 3 authenticated by the face authentication tracking processing device 5, and And a display device 7.

  The car 2 receives a door opening control command from the elevator controller, and receives a car door 11 installed on the car 2 side and a hall door 13 installed on the hall 12 side (hereinafter referred to as these doors 11 and 13). A door opening / closing mechanism (not shown) that opens and closes in conjunction with an elevator door) and a door open detection sensor 14 that detects the open state of the elevator door are provided.

  The door opening detection sensor 14 is a switch that is turned on when the elevator door is fully opened, but may be a door opening / closing detection sensor that is generally used in the past, or a part of the door opening / closing mechanism, such as a rotating mechanism portion, etc. To detect a door opening from a door opening start timing signal and a door opening end timing signal acquired from a pulse generator for generating a pulse corresponding to the rotational speed or a car operation panel installed in the car. It may be.

  As shown in FIG. 2, the camera photographing unit 4 is configured to support the surveillance camera 21 that photographs the elevator user 3 that has entered the car 2, and the surveillance camera 21 so that the surveillance camera 21 can rotate. A pan / tilt mechanism unit 22 that can rotate the camera 21 up, down, left and right at a required angle, and an exterior covering the surveillance camera 21 without including the pan / tilt mechanism unit 22. It consists of a body 23. The exterior body 23 is formed of a material that does not hinder the photographing of the monitoring camera 21.

  The face authentication tracking processing device 5 is roughly divided into a face authentication processing unit 31, a tracking photographing processing unit 32, and an internal storage unit 33, and is functionally configured as shown in FIG.

  That is, the face authentication processing unit 31 recognizes whether or not the subject (elevator user 3) that has entered the car 2 is a person, and when the subject is recognized as a person, the face authentication processing unit 31 recognizes the person's face from the captured image (frame). It authenticates the position.

  The face authentication processing unit 31 is functionally determined to be a door open determination unit 31A for determining the door open state of the elevator doors 11 and 13 from the signal output from the door open detection sensor 14 described above, and the door open state. At this time, a shooting start instruction is sent to the monitoring camera 21, and the subject recognition means 31B for recognizing whether or not the subject displayed in the captured image obtained from the monitoring camera 21 is a human and the subject recognition means 31B A face position authentication unit 31 </ b> C is provided that, when recognized, acquires human face position (for example, face center position) data from the frame of the captured image and stores it in the internal storage unit 33.

  Based on the face position data, the tracking shooting processing unit 32 tracks the surveillance camera 21 through the pan / tilt mechanism unit 22 so as to face the face position, and zooms so that an up image of the face of a required size can be obtained. It has a function to shoot up after focusing.

  Functionally, the tracking imaging processing unit 32 sends an operation command to the pan / tilt mechanism unit 22 based on the human face position data obtained by the face position authentication unit 31C, and changes the direction of the monitoring camera 21 to the human side. Face tracking control means 32A that moves in the direction of the face position and performs similar processing for a plurality of humans, after tracking to the human face position, zooms up so that the human face becomes a predetermined up image, A face-up adjusting unit 32B that performs focus adjustment and a face-up image recording unit 32C that captures a human face-up image after focus adjustment and records it in the image recording device 6 together with the predetermined item data shown in FIG. 6 are provided.

  As the image recording device 6, a video recording device such as a magnetic disc or an optical disc, for example, a digital video recorder (DVR) is used. This image recording device 6 is connected to the face authentication tracking processing device 5 and, for example, when a digital video recorder (DVR) is used, is based on the determination result of the door open state by the door open determination means 31A of the face authentication processing unit 31. The recording operation is automatically started based on the timing signal, and the human face-up image captured by the monitoring camera 21 is sequentially recorded.

  The display device 7 displays the face-up image of the elevator user 3 recorded in the image recording device 6, for example, regularly or when a crime occurs in the car.

  Next, an example of the processing operation of the elevator crime prevention tracking imaging system configured as described above will be described with reference to FIG.

  First, the face authentication processing unit 31 in the face authentication tracking processing device 5 executes the door opening determination means 31A.

  The door opening determining means 31A sets the monitoring camera 21 at a predetermined initial position via the pan / tilt mechanism 22 prior to a series of processing during the operation of the elevator (S1), and then from the door opening detection sensor 14. It is determined from the output signal whether the elevator doors 11 and 13 are in the door open state (S2). Here, when it is determined that the door is open, the subject recognition means 31B is executed.

The subject recognition means 31B sends a shooting start signal to the camera shooting unit 4 (S3). When the monitoring camera 21 receives the shooting start signal, the shooting camera 31 takes a picture of the subject that has entered the car 2. Therefore, the subject recognition means 31B captures an image shot by the monitoring camera 21 (S4). A plurality of human determination reference pattern images stored in a predetermined area such as the internal storage unit 33 are compared, and the head (contour), ear, arm, It is checked whether or not there is a device having a plurality of characteristic elements such as glasses. Here, when the subject of the captured image has at least two or more characteristic elements, the subject is recognized as a human (S5). In this way, the presence or absence of human beings is examined for all subjects in the captured image.

  Thereafter, the face authentication processing unit 31 executes face position authentication means 31C. When the subject recognition means 31B recognizes a person as the person, the face position authentication means 31C acquires human face position data from the frame that is the captured image, and then, as shown in FIG. Are stored in the internal storage unit 33 (S6). If a frame is also stored at the same time, a frame storage address is added to FIG.

  When there are a plurality of humans in a frame that is a captured image, all human face position data are acquired (S5 to S7).

  The subject recognizing means 31 </ b> B moves to the tracking photographing processing unit 32 after storing necessary data regarding all recognized humans in the internal storage unit 33.

  The tracking imaging processing unit 32 executes face tracking control means 32A. The face tracking control unit 32A first sets t = 0 in an appropriate storage unit (S8), and then operates the pan / tilt mechanism unit 22 based on the human face position data obtained by the face position authentication unit 31C. A command is sent (S9), and tracking control is performed so that the monitoring camera 21 faces the human face position (S10).

  Here, the tracking imaging processing unit 32 executes the face-up adjusting unit 32B after directing the monitoring camera 21 toward the human face position. The face-up adjusting unit 32B sends an instruction that the human face image becomes an up-sized image of a predetermined size, zooms up, and then adjusts the focus for the zoom-up (S11). A shooting start signal is transmitted, and shooting by the monitoring camera 21 is started.

  Further, the tracking imaging processing unit 32 executes the face-up image recording unit 32C. The face-up image recording means 32 </ b> C captures a human face-up image captured by the monitoring camera 21, and in addition to the human identification data of the corresponding person stored in the internal storage unit 33 as shown in FIG. A human face-up image is recorded in the image recording device 6 together with the date / time data and the face-up image storage address (S12).

  Subsequently, it is determined whether or not all human face-up photographing has been completed (S13). If it has not been completed, the process proceeds to step S9, and the processes of steps S9 to S13 are repeatedly executed.

  When all the human face-up shootings are completed, it is determined whether or not there is a door open state from the output of the door open detection sensor 14 due to arrival at the next destination floor due to the traveling of the elevator (S14).

  Here, when it is determined that the door is open, the process proceeds to step S3, and the same processing is repeatedly executed. However, when it is determined that the door is not open, t = n (n is, for example, 30 seconds). (S15), the process returns to step S9 to continue shooting the face-up image, and the frame that is the face-up image is displayed together with the human identification data, shooting date / time data, and face-up image storage address of the person shown in FIG. Store.

  When t exceeds n, which is a predetermined time, the processing is continued (for example, flag 1) as a condition (S16), and the process automatically proceeds to step S1 to return to the normal photographing mode.

  Therefore, according to the above embodiment, when the subject entering the car 2 is imaged after the elevator door is opened, and the subject displayed in the captured image is a human, The face position is authenticated, and the surveillance camera 21 is tracked to the authenticated face position via the pan / tilt mechanism unit 22.

  As a result, the surveillance camera 21 is always tracked to the position of each person's face and enters the state of preparation for photography, so that it can be surely matched to the subject to be photographed, and the surveillance camera 21 can be utilized in a wide photography area.

  Further, after the surveillance camera 21 is pointed at the human face position, the human face is enlarged to a required size, and after focusing, a face-up image is taken and recorded, so even if a crime occurs A montage photo of the criminal can be easily created from the recorded face-up image, and can be used as an effective means of criminal criminalization.

(Other embodiments)
(1) In the above-described embodiment, the operation is performed so that the surveillance camera 21 is directed to the authenticated face position, and then zoomed up so that a face-up image of a required size is obtained, and focusing is performed for shooting. At this time, there may be a case where a person who has already been authenticated deviates from the authenticated face position.

As a means for eliminating the deviation from the already acquired face position, a shooting start time that a person who has entered the car 2 will settle in advance is set, and the set shooting is performed after the door of the elevator door is opened. If a shooting start signal is sent to the surveillance camera 21 at the start time to shoot a subject that has entered the car 2, there will be almost no human movement after shooting.
(2) In the above embodiment, the surveillance camera 21 is attached so as to form a dome shape, but the attachment form of the surveillance camera 21 is not particularly limited.

(3) The necessary data shown in FIG. 6 relating to the face-up image has been described as being recorded in the external image recording device 6. However, for example, only the face-up image is stored in the internal storage unit 33 so that it can be read over time. You may make it record on the recording device 6. FIG. Accordingly, necessary data shown in FIG. 6 may be printed out from the internal storage unit 33 when necessary, and used when a face-up image is reproduced from the image recording device 6.

(4) Although the shooting time is not defined in the above embodiment, crimes in the elevator car 2 are often performed at midnight when there are few users. Therefore, when a midnight (crime prevention) time zone is set in advance, after determining that the time zone has been entered, a series of processing operations shown in FIG. 4 may be entered.

  In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  DESCRIPTION OF SYMBOLS 2 ... Car, 4 ... Camera photographing part, 5 ... Face authentication tracking processing device, 6 ... Image recording device, 7 ... Display device, 11 ... Car door, 13 ... Landing door, 14 ... Door open detection sensor, 21 ... Monitoring Camera, 22 ... Pan / tilt mechanism, 23 ... Exterior body, 31 ... Face authentication processing unit, 31A ... Door opening determination means, 31B ... Subject recognition means, 31C ... Face position authentication means, 32 ... Tracking shooting processing part, 32A ... face tracking control means, 32B ... face-up adjustment means, 32C ... face-up image recording means, 33 ... internal storage unit.

Claims (7)

A door open detection sensor that detects and outputs the door open state of the elevator door;
A surveillance camera installed in a car and equipped with a pan / tilt mechanism for photographing a subject entering the car;
When the door open state is determined from the output signal of the door open detection sensor, and it is recognized whether or not the subject in the image taken by the monitoring camera is a human under an instruction to start shooting, and is recognized as a human The face authentication processing means for authenticating the human face position from the photographed image, and the surveillance camera is directed to the face position via the pan / tilt mechanism section based on the face position authenticated by the face authentication processing means. And a face authentication tracking processing device having tracking imaging processing means for performing focus adjustment after the zoom-up processing of the face image and capturing and recording the corresponding human face-up image. A tracking system for crime prevention of elevators. In the elevator tracking imaging system according to claim 1,
The face authentication processing means is displayed in a door open determining means for determining the door open state of the elevator door from an output signal of the door open detection sensor, and in an image taken by the monitoring camera after the door of the elevator door is opened. Subject recognition means for determining whether or not the subject is a human, and face position authentication means for acquiring human face position data from the captured image when the subject recognition means recognizes a person. Elevator crime prevention tracking shooting system. In the elevator tracking photographing system according to claim 1 or 2,
The means for determining whether or not the subject in the photographed image is a human has a human determination reference pattern image stored in advance, and the head included in the human determination reference pattern image is included in the subject displayed in the photographed image. An elevator crime prevention tracking photographing system characterized by recognizing a subject as a human when having a plurality of characteristic elements such as a head, an ear, an arm, and glasses. In the elevator tracking photographing system according to claim 1 or 2,
The tracking imaging processing means includes a face tracking control means for tracking via the pan / tilt mechanism unit so that the surveillance camera faces the direction of the human face position based on the human face position data; Face-up adjusting means for adjusting the focus of the surveillance camera after the boom is raised so that the face of the face becomes an image of a required size, and face-up for capturing and recording the face-up image of the required size An elevator crime prevention tracking photographing system comprising an image recording means. In the elevator tracking photographing system according to claim 1 or 2,
The tracking and shooting processing system for elevator crime prevention, wherein the tracking shooting processing means repeats shooting of the face-up image by the monitoring camera for a predetermined time, and automatically returns to the normal mode after the predetermined time elapses. In the tracking photography system for crime prevention of the elevator as described in any one of Claims 1 thru | or 5,
When a plurality of humans are present in the subject displayed in the photographed image, a process for authenticating the face positions of all humans is executed, and a face of a required size is increased according to the authenticated face positions. An elevator crime prevention tracking photography system characterized by photographing and recording images. In the elevator crime prevention tracking photographing system according to any one of claims 1 to 6,
When recording the human face-up image, an image recording device for reproducibly recording the human face-up image together with shooting date / time data of the face-up image,
An elevator crime prevention tracking photographing system, further comprising a display device for reproducing and displaying the human face-up image recorded in the image recording device.

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