JP2019091230A - Vehicle monitoring system, monitoring device, and information sharing method - Google Patents

Abstract

To provide a method of information provision improved according to a vehicle monitoring system and a monitoring device.SOLUTION: A first device (patrol car 10) transmits first detection information E1 comprising a vehicle number of a specified vehicle A, and a vehicle image of a first photographic vehicle B1. A second device (portable monitoring device 20) receives the first detection information E1. According to the second device, the first photographic vehicle B1, that is included in the first detection information E1, is displayed on a display device when detecting similarity of vehicles.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle monitoring system that recognizes a vehicle number from an image of a license plate of a vehicle, a monitoring device, and an information sharing method performed by these systems and devices.

  There is known a technique for photographing a surrounding vehicle and recognizing a vehicle number from an image of a license plate. In the device of Patent Document 1, character recognition processing is performed on an image captured by an on-vehicle camera, and a vehicle number is read. The database is searched by the read vehicle number and the matching data is displayed. When the vehicle is photographed, the on-vehicle camera is automatically controlled so that the license plate is captured at a full angle of view.

  In the device of Patent Document 2, a license plate is photographed using an infrared camera and an infrared lighting device, and a vehicle number is read. The read vehicle number, time, place, and one still image are registered in the database. When a pre-registered vehicle number is detected, notification is made. The acquired vehicle information is sent to the center.

Unexamined-Japanese-Patent No. 11-296785 gazette Patent No. 4494983

  Patent Document 2 mentioned above discloses a system for transmitting vehicle information acquired by a movable vehicle number recognition device or a fixed vehicle number recognition device to a center device. The center device creates a database of vehicle information such as the vehicle number of the imaged vehicle, image data, data acquisition time, etc., and also has information such as the vehicle number of the arrangement vehicle, A command can be issued to command movement to the detection position. At this time, the surveillance vehicle side instructed to move may be provided with information for reliably finding the order vehicle. Conventionally, vehicle numbers, vehicle types, vehicle colors, etc. have been transmitted by voice communication. There is room for improvement in this information provision method.

  In addition, in a vehicle number recognition apparatus that can be moved, such as in an on-vehicle type, there are restrictions on the size and power consumption of the illumination device and camera that can be used. In addition, the surrounding situation changes in various ways as it moves. Therefore, compared to the quality of an image captured by a fixed type vehicle identification system, the quality of the captured image may be low, and character recognition may not be performed with high accuracy. In this regard, Patent Documents 1 and 2 described above disclose various strategies for capturing high-quality images that can be accurately recognized by characters. The use of high-performance cameras and lighting devices increases the number of situations where high-quality images can be taken, but also leads to an increase in system cost. In addition, there still remains a scene where an image which can not be accurately recognized is captured.

  If the recognition accuracy of the vehicle number is low, false detection and missing may occur. Here, false detection means that a vehicle that is not actually a detection target is erroneously detected as a detection target, and missed detection means that a vehicle that is a detection target is not actually detected. In the system central monitoring system of Patent Document 2, the portable vehicle recognition device transmits all the acquired vehicle information to the center device in order to perform unified management of the vehicle information. Then, even if it is an erroneous detection, the vehicle information such as the vehicle number is transmitted to the center apparatus, and the movement instruction is output to the monitoring vehicle. In addition, since nothing is displayed in the case of a miss, it can not be known whether a miss has occurred or not. If the urgency is low, such as when collecting and analyzing the movement records of the vehicle, or when searching for the movement route of the arranged vehicle at a later date, there is little influence even if there is a false detection or miss. However, for example, when a stolen vehicle or a vehicle used by a criminal for escape is detected in real time, and information is shared and tracked among a plurality of monitoring vehicles, the effect of false detection or missing is large. If a false detection occurs, the surveillance vehicle will move in the wrong direction, and if a miss occurs, the ordered vehicle will be missed. Therefore, there is a need for a mechanism that has the convenience of character recognition and that can suppress false sharing or missed information due to false detection.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide an improved information provision method in a vehicle monitoring system or a monitoring device, and sharing or missing of erroneous information due to erroneous detection. It is to suppress the occurrence.

[Configuration 1]
The characteristic configuration of the vehicle monitoring system to achieve the above purpose is
A vehicle monitoring system comprising a first device and a second device, the vehicle monitoring system comprising:
The first device includes a first device camera, a first device storage unit, a first device recognition unit, a first device detection unit, and a first device transmission unit.
The first device camera captures a vehicle around the first device,
The first device storage unit stores designated vehicle information including a vehicle number of the designated vehicle,
The first device recognition unit recognizes a vehicle number from a captured image of a first captured vehicle captured by the first device camera.
The first device detection unit detects at least a difference between a vehicle number of the first photographed vehicle recognized by the first device recognition unit and a vehicle number included in the designated vehicle information.
When the first device detection unit detects the same vehicle number, the first device transmission unit detects first detected vehicle information including the vehicle number of the designated vehicle and the vehicle image of the first imaging vehicle. Send
The second device includes a second device camera, a second device reception unit, a second device storage unit, a second device recognition unit, a second device detection unit, and a second device display unit.
The second device camera captures a vehicle around the second device,
The second device receiving unit receives the first detected vehicle information,
The second device storage unit stores the first detected vehicle information received by the second device receiving unit,
The second device recognition unit recognizes a vehicle number from a vehicle image of a second photographed vehicle photographed by the second device camera.
The second device detection unit detects at least a difference between a vehicle number of the second photographed vehicle recognized by the second device recognition unit and a vehicle number included in the first detected vehicle information.
The second device display unit is configured to display a vehicle image of the first photographed vehicle included in the first detected vehicle information when the second device detection unit detects the same vehicle number.

  According to the above characteristic configuration, the first device transmits the first detected vehicle information, and the vehicle image included in the first detected vehicle information is displayed on the second device display unit of the second device. The vehicle image captured by the device is provided to the second device and made available. That is, according to the above feature configuration, an improved information provision method to the second device is realized.

[Configuration 2]
Another characteristic configuration of the vehicle monitoring system according to the present invention is
The first device has a first device display unit and a first device input unit.
The first device display unit, when the first device detection unit detects the same vehicle number, a vehicle number of the designated vehicle, and a vehicle image of the first imaging vehicle captured by the first device camera Are displayed to the operator of the first device,
The first device input unit receives an input from an operator of the first device,
When the first device transmission unit receives an input to the effect that the operator of the first device has confirmed that the first device input unit is identical to the first imaging vehicle and the designated vehicle, Transmitting the first detected vehicle information;

  According to the above-described feature configuration, the transmission of the first detected vehicle information from the first device is performed when the confirmation input from the operator of the first device is received, so an error occurs when an erroneous detection occurs. It can suppress that information is transmitted.

[Configuration 3]
Another characteristic configuration of the vehicle monitoring system according to the present invention is
The second device has a second device input unit and a second device transmission unit.
When the second device detection unit detects the same vehicle, the second device display unit detects a vehicle number included in the first detection vehicle information and the second photographing vehicle captured by the second device camera. Displaying a vehicle image and presenting it to the operator of the second device;
The second device input unit receives an input from an operator of the second device,
The second device transmission unit indicates that the operator of the second device has confirmed that the second device input unit is the same as the second photographing vehicle and the vehicle related to the first detection vehicle information. When the input is received, the second detection vehicle information including the vehicle number included in the first detection vehicle information and the vehicle image of the second imaging vehicle is transmitted.

  According to the above-described feature configuration, the transmission of the second detected vehicle information from the second device is performed when the confirmation input from the operator of the second device is received. It can suppress that information is transmitted.

[Configuration 4]
Another characteristic configuration of the vehicle monitoring system according to the present invention is
The specified vehicle information includes appearance information of the specified vehicle,
The first device recognition unit recognizes appearance information from a captured image of the first captured vehicle captured by the first device camera,
The first device detection unit collates the appearance information of the first photographed vehicle recognized by the first device recognition unit with the appearance information included in the designated vehicle information, in addition to the vehicle number, It is in the point of detecting the difference between the photographing vehicle and the designated vehicle.

  The appearance information is information related to the appearance of the vehicle, and is, for example, information such as color, vehicle type, and vehicle type. According to the above-described feature configuration, since the difference between the first photographed vehicle and the designated vehicle is detected by comparing the vehicle number and the appearance information, the detection accuracy is improved, and the occurrence of false detection can be suppressed. . In addition, the conditions for collation of the vehicle number are relaxed (for example, it is performed by partial information included in the car number (for example, only a series of designated numbers, only numerals, etc.), etc. It is also possible to suppress both and

[Configuration 5]
Another characteristic configuration of the vehicle monitoring system according to the present invention is
The specified vehicle information includes an importance index indicating the importance of the specified vehicle.

  According to the above feature configuration, it is possible to enhance the convenience of the vehicle monitoring system by using the importance index included in the designated vehicle information. For example, designated vehicles relating to traffic violations are considered to be low: designated vehicles relating to serious crimes or designated vehicles urgently placed are considered important: high, and importance of some devices included in the vehicle monitoring system : Only high designated vehicles are targeted for verification and detection. In this case, the device can concentrate on searching and monitoring the high importance specified vehicles without being bothered by the low importance specified vehicles.

[Configuration 6]
Another characteristic configuration of the vehicle monitoring system according to the present invention is
The first detected vehicle information includes time information and position information,
The second device extracts the vehicle number, the time information, and the position information from the plurality of first detected vehicle information stored in the second device storage unit, and relates to at least one of the vehicle numbers The point is that it further comprises a data processing unit that generates the series of position information.

  When time-series position information is created as in the above-described feature configuration, the operator can easily understand the tendency of the designated vehicle to move, such as the direction in which the designated vehicle is heading.

[Configuration 7]
The characteristic configuration of the monitoring device to achieve the above purpose is
A monitoring device for monitoring surrounding vehicles, comprising a camera, a storage unit, a recognition unit, a detection unit, and a transmission unit,
The camera captures a vehicle around the monitoring device;
The storage unit stores designated vehicle information including a vehicle number of the designated vehicle,
The recognition unit recognizes a vehicle number from a photographed image of a photographed vehicle photographed by the camera.
The detection unit detects at least a difference between a vehicle number of the photographed vehicle recognized by the recognition unit and a vehicle number included in the designated vehicle information.
The transmitting unit transmits detected vehicle information including a vehicle number of the designated vehicle and a vehicle image of the photographed vehicle when the detection unit detects the same vehicle.

  According to the above-described feature configuration, since the detected vehicle information is transmitted from the monitoring device that has photographed the vehicle that is the designated vehicle, it is possible to use the detected vehicle information with another monitoring device or the like. That is, according to the above-described feature configuration, an improved information provision method from the monitoring device is realized.

[Configuration 8]
The characteristic configuration of the monitoring device to achieve the above purpose is
A monitoring apparatus including a camera, a receiving unit, a storage unit, a recognition unit, a detecting unit, and a display unit,
The camera captures a vehicle around the monitoring device;
The receiving unit receives detected vehicle information including a vehicle number and a vehicle image,
The storage unit stores the detected vehicle information received by the receiving unit,
The recognition unit recognizes a vehicle number from a vehicle image of a photographed vehicle photographed by the camera.
The detection unit detects at least a difference between a vehicle number of the photographed vehicle recognized by the recognition unit and a vehicle number included in the detected vehicle information.
The display unit is configured to display a vehicle image included in the detected vehicle information when the detection unit detects the same vehicle.

  According to the above-described feature configuration, since the vehicle image included in the received detected vehicle information is displayed on the display unit, the detected vehicle information can be used in the monitoring device. That is, according to the above-described feature configuration, the improved information use in the monitoring device that has received the information provision is realized.

[Configuration 9]
Another characteristic configuration of the monitoring device according to the present invention is
The detected vehicle information includes time information and position information,
A data processing unit that extracts the vehicle number, the time information, and the position information from the plurality of detected vehicle information stored in the storage unit, and creates the time-series position information related to at least one of the vehicle numbers In addition, there is a point.

  When time-series position information is created as in the above-described feature configuration, the operator can easily understand the tendency of the designated vehicle to move, such as the direction in which the designated vehicle is heading.

[Configuration 10]
The characteristic configuration of the monitoring device to achieve the above purpose is
A monitoring apparatus including a camera, a receiving unit, a storage unit, a recognition unit, a detecting unit, a display unit, an input unit, and a transmitting unit,
The camera captures a vehicle around the monitoring device;
The receiving unit receives vehicle information including a vehicle number,
The storage unit stores the vehicle information received by the receiving unit,
The recognition unit recognizes a vehicle number from a vehicle image of a photographed vehicle photographed by the camera.
The detection unit detects at least a difference between a vehicle number of the photographed vehicle recognized by the recognition unit and a vehicle number included in the vehicle information,
When the detection unit detects the same vehicle number, the display unit displays the vehicle number included in the vehicle information and the vehicle image of the photographed vehicle photographed by the camera, and the display unit Present to the operator,
The input unit receives an input from an operator of the monitoring device.
When the transmission unit receives an input to the effect that the operator of the monitoring device has confirmed that the input unit is the same as the photographing vehicle and the vehicle related to the vehicle information, the operator is the same. The point is to transmit detected vehicle information including the vehicle number of the confirmed vehicle and the vehicle image of the photographed vehicle photographed by the camera.

  According to the above-described feature configuration, the transmission of the second detected vehicle information from the monitoring device is performed when the confirmation input from the operator of the monitoring device is received. It can be suppressed to be sent.

[Configuration 11]
The characteristic configuration of the information sharing method to achieve the above purpose is
An information sharing method for sharing detected vehicle information among a plurality of devices, comprising:
A first photographing step in which a camera of the first device photographs a vehicle;
A first recognition step of recognizing a vehicle number from a photographed image of the first photographed vehicle photographed by the camera of the first device;
A first detection step of detecting a difference between a vehicle number recognized from a photographed image of the first photographed vehicle and a vehicle number of a designated vehicle;
When it is detected that the vehicle number of the first photographed vehicle and the vehicle number of the designated vehicle are detected, transmission is performed to transmit detected vehicle information including the vehicle number of the designated vehicle and the vehicle image of the first photographed vehicle Step and
A receiving step in which a second device other than the first device receives the detected vehicle information;
A second imaging step in which a camera of the second device captures a vehicle;
A second recognition step of recognizing a vehicle number from a photographed image of a second photographed vehicle photographed by a camera of the second device;
A second detection step of detecting a difference between a vehicle number recognized from a photographed image of the second photographed vehicle and a vehicle number included in the detected vehicle information;
When it is detected that the vehicle number of the second imaging vehicle and the vehicle number according to the detected vehicle information are detected, the display device of the second device displays the vehicle image of the first imaging vehicle included in the detected vehicle information And a display step to be displayed.

  According to the above feature configuration, the first device transmits the first detected vehicle information, and the vehicle image included in the first detected vehicle information is displayed on the display device of the second device. The obtained vehicle image is provided to the second device and made available. That is, according to the above feature configuration, an improved information provision method to the second device is realized.

Diagram showing the outline of the vehicle monitoring system A diagram showing an outline of a vehicle monitoring system according to another embodiment Block diagram showing the configuration of a vehicle monitoring system Diagram showing an example of screen display in the monitoring device Diagram showing an example of screen display in the monitoring device Flow chart showing processing performed by vehicle monitoring system

First Embodiment
Hereinafter, a vehicle monitoring system, a monitoring apparatus, and an information sharing method according to the present embodiment will be described with reference to the drawings.

  At least a first device and a second device are connected to the vehicle monitoring system 1. The first device is a monitoring device that detects the difference between a photographed vehicle and a designated vehicle, and transmits detected vehicle information when the designated vehicle is detected. The second device is a monitoring device that detects the difference between the photographed vehicle and the vehicle according to the detected vehicle information, receives the detected vehicle information, and displays the vehicle image included in the detected vehicle information when the same vehicle is detected. Do. The monitoring device may comprise the functionality of the first device and the functionality of the second device.

  Specifically, the first device collates the vehicle number recognized from the photographed vehicle with the vehicle number of the designated vehicle information to detect a difference and detects the same when the collated vehicle number is detected, the detected vehicle information Send. Similarly, the second device collates the vehicle number recognized from the photographed vehicle with the vehicle number of the detected vehicle information to detect differences and detects the same vehicle number, and is thus included in the detected vehicle information. Display the vehicle image.

  In this embodiment, the difference between the photographed vehicle and the vehicle according to the vehicle information (designated vehicle information, detected vehicle information, etc.) is detected by collating the vehicle number recognized from the photographed vehicle with the vehicle number included in the vehicle information. This is done by detecting differences. Information to be collated in detecting differences between vehicles is not limited to a vehicle number as long as it is unique information that can identify a vehicle, but a vehicle number that can be easily confirmed from the outside of the vehicle is advantageous.

  FIG. 1 shows an outline of the configuration and operation of a vehicle monitoring system 1. The vehicle monitoring system 1 includes a patrol car 10 (examples of a first device, a second device, and a monitoring device), a portable monitoring device 20 (examples of a first device, a second device, and a monitoring device), and a stationary monitoring device 30 (a first example). One apparatus, an example of a monitoring apparatus), and a central management apparatus 40 are configured. The vehicle monitoring system 1 is a system for searching for a designated vehicle (for example, a stolen vehicle or a vehicle related to a crime) based on a vehicle number.

  As described later, a plurality of patrol cars 10, portable monitoring devices 20, and stationary monitoring devices 30 connected to the vehicle monitoring system 1 may be connected. A configuration is also possible in which a plurality of patrol cars 10 are connected to the vehicle monitoring system 1 and the portable monitoring device 20 and the stationary monitoring device 30 are not connected. Here, in order to simplify the description, an example in which one or two patrol cars 10 and one portable monitoring device 20 and one stationary monitoring device 30 are connected will be described.

  The vehicle number is a number described on the license plate of the vehicle and is a number unique to the vehicle. In Japan, the car registration number of a registered car and the car number of a mini car and a motorcycle correspond to this. For example, in the case of a registered automobile, the vehicle number is described as "Himeji 560 12-34". "Himeji" represents the registration area of the car, "560" represents the type of car, and "u" represents the use of the car. "12-34" is a series designated number. In Japan, the letters of the vehicle number are numbers, kanji, hiragana, but in foreign countries, they may include alphabets and numbers, and may include other characters.

  The patrol car 10, the portable monitoring device 20, and the stationary monitoring device 30 capture images of surrounding vehicles and detect whether the vehicles are designated vehicles. The patrol car 10 is a vehicle equipped with a camera, and performs shooting while moving. The portable monitoring device 20 is a device including a movable camera and a notebook PC or a tablet terminal, and is carried by a surveillance person and performs shooting while moving. The portable monitoring device 20 may be of a type in which a surveillance worker wears a camera, or a type in which a camera is installed using a tripod or the like. The stationary monitoring device 30 is a device including a camera, is installed on a telephone pole or the like, and photographs the surroundings. The central management device 40 is communicably connected to the patrol car 10, the portable monitoring device 20, and the stationary monitoring device 30, and transmits designated vehicle information and transmits / receives detected vehicle information.

  The detection of the designated vehicle and the sharing of information are performed as follows. Character recognition is performed on the part of the license plate in the photographed image of the vehicle to recognize the vehicle number. The recognized vehicle number and the vehicle number of the designated vehicle are collated, and when they coincide, it is detected that the photographed vehicle is the designated vehicle. When the photographed vehicle is a designated vehicle, information (detected vehicle information) including an image of the photographed vehicle is transmitted to the central management device 40. Further, the recognized vehicle number and the vehicle number of the vehicle related to the detected vehicle information are collated, and when they coincide, it is detected that the photographed vehicle is a vehicle related to the detected vehicle information. Information (detected vehicle information) including an image of the photographed vehicle is also transmitted to the central management device 40 even when the photographed vehicle is a vehicle related to the detected vehicle information. Then, the central management device 40 transmits the detected vehicle information to the other patrol car 10, the portable monitoring device 20, and the stationary monitoring device 30. Thus, the information of the vehicle detected by one device (the patrol car 10, the portable monitoring device 20, and the stationary monitoring device 30) is the other device (the patrol car 10, the portable monitoring device 20, and the stationary). It is shared and used by the monitoring device 30).

  The flow of information in the vehicle monitoring system 1 will be described in detail. The central management device 40 transmits designated vehicle information D to the patrol car 10, the portable monitoring device 20, and the stationary monitoring device 30. The designated vehicle information D is information including at least a vehicle number of the designated vehicle. The number of designated vehicles according to the designated vehicle information D may be one, or two or more. In the present embodiment, the designated vehicle information D includes a vehicle number, a vehicle type, and a vehicle body color. The patrol car 10, the portable monitoring device 20, and the stationary monitoring device 30 receive and store the designated vehicle information D transmitted from the central management device 40.

  In the following, the patrol car 10 (corresponding to the first device) shares detected vehicle information on the detected designated vehicle A with the portable monitoring device 20 and the stationary monitoring device 30, and the portable monitoring device 20 (second device And the stationary monitoring device 30 detect the designated vehicle A related to the shared detected vehicle information.

  It is assumed that it is detected that the first photographed vehicle B1 photographed by the patrol car 10 is the designated vehicle A. The patrol car 10 transmits the first detected vehicle information E1 to the central management device 40. The patrol car 10 also stores the first detected vehicle information E1. The first detected vehicle information E1 is information including at least a vehicle number of the designated vehicle A and a vehicle image (a photographed image) of the first photographed vehicle B1. In the present embodiment, the first detected vehicle information E1 includes the designated vehicle information D of the designated vehicle A including the vehicle number of the designated vehicle A, the photographed image of the first photographed vehicle B1, the photographing date and time, and the photographing location. . The central management device 40 transmits the first detection vehicle information E1 transmitted from the patrol car 10 to the portable monitoring device 20 and the stationary monitoring device 30. The portable monitoring device 20 and the stationary monitoring device 30 receive and store the first detected vehicle information E1 transmitted from the central management device 40.

  In the present embodiment, in the patrol car 10, confirmation by the occupant (example of the operator) of the patrol car 10 is performed before transmission of the first detection vehicle information E1. In more detail, the vehicle number of the designated vehicle A and the vehicle image of the first imaging vehicle B1 are displayed on a liquid crystal monitor or the like and presented to the occupant of the patrol car 10. The passenger sees the displayed information, confirms that the first photographed vehicle B1 and the designated vehicle A are identical, and inputs that effect. When this input is made, the first detected vehicle information E1 is transmitted from the patrol car 10. In addition, when there is this input, the patrol car 10 stores the first detected vehicle information E1.

  Subsequently, it is assumed that it is detected that the second photographed vehicle B2 photographed by the portable monitoring device 20 is the designated vehicle A related to the first detection vehicle information E1. The portable monitoring device 20 displays the vehicle number of the designated vehicle A (that is, the vehicle number included in the first detected vehicle information E1) and the vehicle image of the second photographed vehicle B2 on a liquid crystal monitor or the like. Present it to the guard who carries 20. Further, the portable monitoring device 20 transmits the second detected vehicle information E2 to the central management device 40. Moreover, the portable monitoring device 20 stores the second detection vehicle information E2. The second detection vehicle information E2 is information including at least a vehicle number included in the first detection vehicle information E1 and a vehicle image (a photographed image) of the second photographed vehicle B2. In the present embodiment, the second detected vehicle information E2 includes the vehicle number of the designated vehicle A (that is, the vehicle number included in the first detected vehicle information E1), the designated vehicle information D of the designated vehicle A, and the second photographed vehicle B2. It shall include the photographed image, photographing date and time, and photographing location. The central management device 40 transmits the second detected vehicle information E2 transmitted from the portable monitoring device 20 to the patrol car 10 and the stationary monitoring device 30. The patrol car 10 and the stationary monitoring device 30 receive and store the second detected vehicle information E2 transmitted from the central management device 40.

  In the present embodiment, in the portable monitoring device 20, before transmission of the second detection vehicle information E2, confirmation is performed by a monitoring person (example of an operator) who carries the portable monitoring device 20. Specifically, the vehicle number of the designated vehicle A (that is, the vehicle number included in the first detected vehicle information E1) and the vehicle image of the second photographed vehicle B2 are displayed on a liquid crystal monitor or the like, and the portable monitoring device 20 is carried It is presented to the guards. The surveillance staff sees the displayed information and confirms that the second photographed vehicle B2 and the first photographed vehicle B1 (the vehicle according to the first detected vehicle information E1, ie, the designated vehicle A) are identical, and Enter a message. When the input is made, the second detection vehicle information E2 is transmitted from the portable monitoring device 20. In addition, when there is this input, the portable monitoring device 20 stores the second detection vehicle information E2.

  Subsequently, it is assumed that it is detected that the third photographed vehicle B3 photographed by the stationary monitoring device 30 is the designated vehicle A related to the second detection vehicle information E2. The stationary monitoring device 30 transmits the third detection vehicle information E3 to the central management device 40. The stationary monitoring device 30 also stores the third detection vehicle information E3. The third detection vehicle information E3 is information including at least a vehicle number included in the second detection vehicle information E2 and a vehicle image (a photographed image) of the third photographed vehicle B3. In the present embodiment, the third detected vehicle information E3 is the designated vehicle information D of the designated vehicle A including the vehicle number of the designated vehicle A (that is, the vehicle number included in the first detected vehicle information E1 and the second detected vehicle information E2). , The photographed image of the third photographed vehicle B3, the photographing date and time, and the photographing location. The central management device 40 transmits the third detection vehicle information E3 transmitted from the stationary monitoring device 30 to the patrol car 10 and the portable monitoring device 20. The patrol car 10 and the portable monitoring device 20 receive and store the third detection vehicle information E3 transmitted from the central management device 40.

  As described above, the detected vehicle information (the first detected vehicle information E1, the second detected vehicle information E2, the third detected vehicle information E3) related to the designated vehicle A is the patrol car 10 of the vehicle monitoring system 1, the portable monitoring Information is shared between the device 20 and the stationary monitoring device 30.

  In another embodiment, as shown in FIG. 2, the stationary monitoring device 30 (corresponding to the first device) shares the detected vehicle information regarding the detected designated vehicle A with the patrol car 10 and the portable monitoring device 20, The patrol car 10 (corresponding to the second device) and the stationary monitoring device 30 may detect the designated vehicle A according to the shared detected vehicle information.

  It is assumed that it is detected that the first photographed vehicle B1 photographed by the stationary monitoring device 30 is the designated vehicle A. The stationary monitoring device 30 transmits the first detected vehicle information E1 to the central management device 40. The stationary monitoring device 30 also stores the first detected vehicle information E1. The first detected vehicle information E1 is information including at least a vehicle number of the designated vehicle A and a vehicle image (a photographed image) of the first photographed vehicle B1. In the present embodiment, the first detected vehicle information E1 includes the designated vehicle information D of the designated vehicle A including the vehicle number of the designated vehicle A, the photographed image of the first photographed vehicle B1, the photographing date and time, and the photographing location. . The central management device 40 transmits the first detected vehicle information E1 transmitted from the stationary monitoring device 30 to the patrol car 10 and the portable monitoring device 20. The patrol car 10 and the portable monitoring device 20 receive and store the first detected vehicle information E1 transmitted from the central management device 40.

  Subsequently, it is assumed that it is detected that the second photographed vehicle B2 photographed by the patrol car 10 is the designated vehicle A related to the first detected vehicle information E1. The patrol car 10 displays the vehicle number of the designated vehicle A (that is, the vehicle number included in the first detected vehicle information E1) and the vehicle image of the second photographed vehicle B2 on a liquid crystal monitor or the like. I will present to you. The patrol car 10 also transmits the second detected vehicle information E2 to the central management device 40. The patrol car 10 also stores the second detected vehicle information E2. The second detection vehicle information E2 is information including at least a vehicle number included in the first detection vehicle information E1 and a vehicle image (a photographed image) of the second photographed vehicle B2. In the present embodiment, the second detected vehicle information E2 includes the vehicle number of the designated vehicle A (that is, the vehicle number included in the first detected vehicle information E1), the designated vehicle information D of the designated vehicle A, and the second photographed vehicle B2. It shall include the photographed image, photographing date and time, and photographing location. The central management device 40 transmits the second detection vehicle information E2 transmitted from the patrol car 10 to the portable monitoring device 20 and the stationary monitoring device 30. The portable monitoring device 20 and the stationary monitoring device 30 receive and store the second detected vehicle information E2 transmitted from the central management device 40.

  In the present embodiment, in the patrol car 10, confirmation by the occupant (example of the operator) of the patrol car 10 is performed before transmission of the second detection vehicle information E2. Specifically, the vehicle number of the designated vehicle A (that is, the vehicle number included in the first detected vehicle information E1) and the vehicle image of the second imaging vehicle B2 are displayed on a liquid crystal monitor or the like. Will be presented. The surveillance staff sees the displayed information and confirms that the second photographed vehicle B2 and the first photographed vehicle B1 (the vehicle according to the first detected vehicle information E1, ie, the designated vehicle A) are identical, and Enter a message. When this input is made, the second detected vehicle information E2 is transmitted from the patrol car 10. In addition, when there is this input, the patrol car 10 stores the second detection vehicle information E2.

  As still another embodiment, the patrol car 10 (corresponding to the first device) shares the detected vehicle information regarding the detected specified vehicle A with the other patrol cars 10, and corresponds to the other patrol car 10 (the second device) ) May detect the designated vehicle A related to the shared detected vehicle information. The patrol car 10 has the same function as the patrol car 10 according to the embodiment shown in FIG. 1 and the other patrol car 10 has the same function as the patrol car 10 according to the embodiment shown in FIG. Thus, the first device can be configured by any one of the patrol car 10, the portable monitoring device 20, and the stationary monitoring device 30, and the second device can be the patrol car 10, the portable monitoring device 20. And one of the stationary monitoring devices 30 can be configured.

  FIG. 3 is a block diagram showing the configuration of the patrol car 10, the portable monitoring device 20, the stationary monitoring device 30, and the central management device 40.

  The patrol car 10 has a camera 11, a communication device 12, a control device 13, and a display input device 14.

  The camera 11 is a device that is controlled by the control device 13 and captures an image of a vehicle around the patrol car 10 to generate an image (vehicle image). In the present embodiment, imaging is performed automatically and continuously at predetermined time intervals. That is, shooting is performed in the form of a moving image. The photographed image is sent to the control device 13, and the vehicle number recognition process is performed. The camera 11 may be directed to the front of the patrol car 10 or may be directed to the rear or side. Multiple cameras 11 may be directed in multiple directions. The camera 11 may be a camera of a drive recorder provided in the patrol car 10.

  The communication device 12 is a device which is controlled by the control device 13 to transmit / receive detected vehicle information and receive designated vehicle information. The communication device 12 may be a wireless communication device provided in the patrol car 10.

  The control device 13 is a device that controls the camera 11, the communication device 12, and the display input device 14 to perform an operation related to the vehicle monitoring system 1. The control device 13 includes a receiving unit 13a, a storage unit 13b, a recognition unit 13c, a detecting unit 13d, a display unit 13e, an input unit 13f, and a transmitting unit 13g. The control device 13 includes, for example, a software program for realizing various processes, a CPU that executes the software program, and various hardware controlled by the CPU.

  The receiver 13a controls the communication device 12 to receive designated vehicle information and detected vehicle information transmitted from the central management device 40. The designated vehicle information and the detected vehicle information received are stored in the storage unit 13 b.

  The storage unit 13 b stores the received specified vehicle information and detected vehicle information. The storage unit 13 b is configured of a storage device such as a hard disk drive (HDD) or a random access memory (RAM).

  The recognition unit 13c recognizes the vehicle number of the vehicle from the captured image of the vehicle captured by the camera 11. Specifically, the recognition unit 13c performs character recognition processing on the portion corresponding to the number plate in the captured image, and recognizes the vehicle number of the vehicle. Specifically, first, template matching is performed using template images of license plates of different sizes, or a learning model obtained by machine learning of images of license plates of different sizes is used to generate a license plate from an image of a vehicle Detect the position and size, and cut out the image of the part of the license plate. Next, from the image of the cut out license plate, a character image is cut out for each digit according to the specification of the license plate, and character recognition is performed on each character image. If the recognized character is arranged according to the specification of the number plate, it will become a vehicle number.

  The detection unit 13d collates the vehicle number recognized by the recognition unit 13c with the vehicle number included in the designated vehicle information, and detects the difference between the photographed vehicle and the designated vehicle. In the present embodiment, when the vehicle number recognized by the recognition unit 13c matches the vehicle number included in the designated vehicle information, the photographed vehicle and the designated vehicle are the same, that is, the photographed vehicle is the designated vehicle. Determine that there is. Here, various detection conditions can be set in the difference detection of vehicles. Specifically, when all of the region, type, application, and series designation number included in the vehicle number match, that is, all the characters of the vehicle number match, the vehicle may be “identical” or partially If they match, the vehicles may be "identical". Partially matching means, for example, the case where the series designation number matches, or the case where the series number matches except for one (two, three, etc.) characters of the vehicle number.

  If the recognized vehicle number and the vehicle number included in the specified vehicle information match, the detection unit 13d creates detection vehicle information including at least the matched vehicle number and the captured vehicle image of the vehicle, and the storage unit 13b. Remember. At this time, although the vehicle number included in the designated vehicle information is stored as the coincident vehicle number, if not completely coincident, the recognized vehicle number may be separately stored in addition to the vehicle number of the designated vehicle information.

  When the storage unit 13 b stores the detected vehicle information, the detection unit 13 d collates the vehicle number recognized by the recognition unit 13 c with the vehicle number included in the detected vehicle information, and captures the captured vehicle. And the difference between the vehicle according to the detected vehicle information. When the detected vehicle information includes the recognized vehicle number and the vehicle number of the designated vehicle information, the collation is performed using the vehicle number of the designated vehicle information.

  When the detection unit 13d detects the same vehicle, the display unit 13e controls the display input device 14 to cause the display input device 14 to display information related to the vehicle. For example, the display unit 13e displays, on the display input device 14, a vehicle image of a captured vehicle, designated vehicle information (such as a vehicle number) related to the vehicle, and detected vehicle information (such as a vehicle image) related to the vehicle. Let

  The input unit 13 f controls the display input device 14 to receive an input from an occupant (operator) of the patrol car 10. For example, the input unit 13 f causes the display input device 14 to display a button and receives an input.

  The transmitter 13 g controls the communication device 12 to transmit detected vehicle information to the central management device 40. The operations of the display unit 13e, the input unit 13f, and the transmission unit 13g will be described in detail later.

  The display input device 14 (an example of a display device) is a device controlled by the control device 13 to display various information and to receive an operation / input from an occupant (operator) of the patrol car 10. The display input device 14 is, for example, a touch panel liquid crystal monitor.

  The camera 11, the communication device 12, the control device 13, and the display input device 14 described above may be devices incorporated in the patrol car 10, or may be retrofitted to an existing vehicle. For example, the drive recorder functions as the camera 11, the notebook PC or tablet terminal functions as the communication device 12, the control device 13, and the display input device 14, and the drive recorder and the notebook PC or tablet terminal are mounted on a vehicle It may be

  The portable monitoring device 20 has the same configuration and function as the patrol car 10 and performs the same operation. Specifically, the portable monitoring device 20 includes a camera 21, a communication device 22, a control device 23, and a display input device 24. The control device 23 includes a receiving unit 23a, a storage unit 23b, a recognizing unit 23c, a detecting unit 23d, a display unit 23e, an input unit 23f, and a transmitting unit 23g. These configurations have the same functions as the camera 11, the communication device 12, the control device 13, and the display input device 14 of the patrol car 10, and perform the same operations.

  For example, the portable monitoring device 20 may be configured by a camera 21 mounted on a shoulder of a surveillance person, and a notebook PC or a tablet terminal. In addition, the portable monitoring device 20 may be configured by a camera 21 installed by a surveillance person with a tripod or the like, a notebook PC or a tablet terminal. A notebook PC or a tablet terminal functions and operates as the communication device 22, the control device 23, and the display input device 24.

  The stationary monitoring device 30 has the same configuration and function as the patrol car 10 except that it does not have the display unit 13e, the input unit 13f, and the display input device 14, and performs the same operation. That is, the stationary monitoring device 30 includes the camera 31, the communication device 32, and the control device 33. The control device 33 includes a receiving unit 33a, a storage unit 33b, a recognition unit 33c, a detecting unit 33d, and a transmitting unit 33e. These configurations have the same functions as the camera 11, the communication device 12, the control device 13, and the display input device 14 of the patrol car 10, and perform the same operations.

  The central management device 40 is a device that manages the overall operation of the vehicle monitoring system 1. The central management unit 40 has a communication unit 41 and a control unit 42. The communication device 41 is a device controlled by the control device 42 to transmit designated vehicle information and transmit / receive detected vehicle information.

  The control device 42 controls the communication device 41 to transmit designated vehicle information and transmit / receive detected vehicle information. The control device 42 includes a receiving unit 42a, a storage unit 42b, and a transmitting unit 42c. The control device 42 is configured by, for example, a software program for realizing various types of processing, a CPU that executes the software program, and various hardware controlled by the CPU.

  The receiving unit 42 a controls the communication device 41 to receive detected vehicle information transmitted from the patrol car 10, the portable monitoring device 20, and the stationary monitoring device 30. The received detected vehicle information is stored in the storage unit 42b.

  The storage unit 42 b stores designated vehicle information and detected vehicle information. The storage unit 42 b is configured of a storage device such as a hard disk drive (HDD) or a random access memory (RAM).

  The transmission unit 42 g controls the communication device 41 to transmit the designated vehicle information and the detected vehicle information to the patrol car 10, the portable monitoring device 20, and the stationary monitoring device 30.

  Next, the operations of the patrol car 10 and the portable monitoring device 20, particularly the operations of the display units 13e and 23e, the input units 13f and 23f, and the transmission units 13g and 23g will be described in detail with reference to FIGS. 4 and 5.

  First, it is assumed that the designated vehicle information is stored in the storage unit 13b of the patrol car 10 and the detected vehicle information is not stored. The patrol car 10 continuously shoots the surroundings with the camera 11 while traveling on a road, a parking lot, and the like. When a vehicle, particularly a license plate of a vehicle, appears in the photographed image, the recognition unit 13c recognizes the vehicle number from the image. Then, the detection unit 13d collates the vehicle number recognized by the recognition unit 13c with the vehicle number of the designated vehicle included in the designated vehicle information. If the two do not match, the shooting continues.

  If the vehicle numbers match, the detection unit 13d determines that the vehicle photographed by the camera 11 (first photographed vehicle B1) is the same as the designated vehicle (designated vehicle A) related to the vehicle number. At that time, the display unit 13e causes the display input device 14 (the liquid crystal monitor 70 in FIG. 4) to display the vehicle image of the first photographed vehicle B1 and the designated vehicle information (in particular, the vehicle number) related to the designated vehicle A. , These pieces of information are presented to the occupant (operator) of the patrol car 10.

  FIG. 4 is an example of a screen displayed on the display input device 14. In the display field 71, a vehicle image of the first photographed vehicle B1 photographed by the camera 11 is displayed. In the display column 72, an enlarged image of the portion of the license plate of the same vehicle image is displayed. In the display column 73, the vehicle number recognized by the recognition unit 13c from the photographed vehicle image is displayed. In the display column 76, designated vehicle information is displayed. The designated vehicle information is information relating to the designated vehicle A in which the detection unit 13d detects that it is identical to the photographed vehicle. That is, in the example of FIG. 4, the captured vehicle image of the first photographed vehicle B1 and the recognized vehicle number, and designated vehicle information (vehicle number and the like) related to the designated vehicle A are displayed.

  Further, in the example of FIG. 4, a button 74 described as “send” and a button 75 described as “cancel” are displayed. By these buttons, the input unit 13 f receives an input from the occupant.

  The occupant (operator) of the patrol car 10 visually observes the information displayed on the display input device 14 by the display unit 13e, and designates the first photographed vehicle B1 photographed by the camera 11 and the designated vehicle information displayed. It is confirmed whether or not the vehicle A is identical. If it is confirmed that they are the same, the button 74 is pressed as an input to that effect. If it is confirmed that they are not identical, the button 75 is pressed as an input to that effect.

  When the button 74 is pressed, that is, when the input unit 13f receives an input indicating that the occupant has confirmed that the first photographed vehicle B1 and the designated vehicle A are the same, the transmitting unit 13g performs the first photographing The detected vehicle information (first detected vehicle information E1) related to the vehicle B1 is transmitted to the central management device 40. When the button 75 is pressed, the detected vehicle information is not transmitted, and the photographing by the camera 11 is continued.

  Since the detection unit 13d detects the difference between the vehicles based on the result of the image recognition by the recognition unit 13c, if the imaging condition is bad and the image is not clear, there is a possibility that an erroneous detection occurs. In the present embodiment, since the information is displayed on the display input device 14 and the transmitting unit 13g transmits the detected vehicle information after receiving the confirmation input from the occupant, the erroneous information may be transmitted to the central management device 40 or another device (others It is possible to suppress transmission to the patrol car 10, the portable monitoring device 20, and the stationary monitoring device 30).

  The above operation shows an example in which the patrol car 10 operates as the first device. In this example, the camera 11, the communication device 12, the control device 13, the receiving unit 13a, the storage unit 13b, the recognition unit 13c, the detecting unit 13d, the display unit 13e, the input unit 13f, and the transmitting unit 13g of the patrol car 10 respectively First device camera, first device communication device, first device control device, first device receiving unit, first device storage unit, first device recognition unit, first device detection unit, first device display unit, first device It operates as an input unit and a first device transmission unit. The portable monitoring device 20 can also operate as the first device. Although the display of information and the confirmation input from the operator can be omitted, in that case, the stationary monitoring device 30 can also operate as the first device.

  The first detected vehicle information E1 transmitted from the patrol car 10 is received by the portable monitoring device 20 possessed by the supervisor via the central management device 40 and stored in the storage unit 23b of the portable monitoring device 20. .

  The portable surveillance device 20 continuously captures the surroundings with the camera 21 when the surveillance staff travels on a road, a parking lot or the like. When a vehicle, particularly a license plate of a vehicle, appears in the photographed image, the recognition unit 23c recognizes the vehicle number from the image. Then, the detection unit 23d collates the vehicle number recognized by the recognition unit 23c, the vehicle number of the designated vehicle included in the designated vehicle information, and the vehicle number of the first photographed vehicle B1 included in the first detected vehicle information E1. . If the two do not match, the shooting continues.

  The vehicle number recognized by the recognition unit 23c matches the vehicle number of the designated vehicle included in the specified vehicle information, and the vehicle number recognized by the recognition unit 23c and the first photographing included in the first detected vehicle information E1. When the vehicle number of the vehicle B1 does not match, the same operation as the operation of the patrol car 10 as the first device described above is performed.

  When the vehicle number recognized by the recognition unit 23c matches the vehicle number of the first photographed vehicle B1 included in the first detected vehicle information E1, the detection unit 23d detects the vehicle photographed by the camera 21 (second photographing It is determined that the vehicle B2) and the vehicle (first photographed vehicle B1) related to the first detected vehicle information E1 are the same. At this time, the display unit 23e is associated with the vehicle image of the second photographed vehicle B2 photographed by the camera 21, the vehicle image and the vehicle number of the first photographed vehicle B1 included in the first detection vehicle information E1, and the designated vehicle A. The designated vehicle information (especially, the vehicle number) is displayed on the display input device 24 (the liquid crystal monitor 80 in FIG. 5), and the information is presented to a monitoring person (operator) having the portable monitoring device 20.

  FIG. 5 is an example of a screen displayed on the display input device 24. In the display field 81, a vehicle image of the second photographed vehicle B2 photographed by the camera 21 is displayed. In the display field 82, a magnified image of the portion of the license plate of the same vehicle image is displayed. In the display field 83, the vehicle number recognized by the recognition unit 23c from the photographed vehicle image is displayed. Designated vehicle information relating to the designated vehicle A is displayed in the display column 86. The display column 87 displays the vehicle number of the first photographed vehicle B1 included in the first detected vehicle information E1, the photographing date and time of the vehicle image, and the photographing location. In the display column 88, a vehicle image of the first imaging vehicle B1 included in the first detected vehicle information E1 is displayed. The first detection vehicle information E1 is information related to the first photographing vehicle B1 in which the detection unit 23d detects that the vehicle photographed by the camera 21 and the vehicle related to the first detection vehicle information E1 are the same. That is, in the example of FIG. 5, the vehicle image and vehicle number of the first imaging vehicle B1 included in the first detection vehicle information E1, the imaging date and time and the imaging location of the vehicle image of the first imaging vehicle B1, and the first [2] A vehicle image of the photographed vehicle B2, a recognized vehicle number, and designated vehicle information related to the designated vehicle A are displayed.

  Further, in the example of FIG. 5, a button 84 described as “send” and a button 85 described as “cancel” are displayed. With these buttons, the input unit 23 f receives an input from the occupant.

  The monitoring person (operator) having the portable monitoring device 20 visually observes the information displayed on the display input device 24 by the display unit 23e, and the second photographed vehicle B2 photographed by the camera 21 and the displayed first It is confirmed whether it is the same as the 1st photography vehicle B1 concerning detection vehicle information E1. If it is confirmed that they are the same, the button 84 is pressed as an input to that effect. If it is confirmed that they are not identical, the button 85 is pressed as an input to that effect.

  When the button 84 is pressed, that is, the input unit 23f receives an input indicating that the occupant has confirmed that the second photographed vehicle B2 and the first photographed vehicle B1 related to the first detection vehicle information E1 are the same. At the same time, the transmitting unit 23g transmits the detected vehicle information (second detected vehicle information E2) related to the second photographed vehicle B2 to the central management device 40. When the button 85 is pressed, the detected vehicle information is not transmitted, and the photographing by the camera 21 is continued.

  The above operation shows an example in which the portable monitoring device 20 operates as the second device. In this example, the camera 21, the communication device 22, the control device 23, the receiving unit 23a, the storage unit 23b, the recognizing unit 23c, the detecting unit 23d, the display unit 23e, the input unit 23f, and the transmitting unit 23g of the portable monitoring device 20 Second device camera, second device communication device, second device control device, second device receiving unit, second device storage unit, second device recognition unit, second device detection unit, second device display unit, second It operates as a 2 device input unit and a 2nd device transmission unit. The patrol car 10 can also operate as the second device.

  Next, the information sharing method performed by the vehicle monitoring system 1 will be described with reference to the flowchart of FIG. An example in which the patrol car 10 operates as the first device and the portable monitoring device 20 operates as the second device will be described.

  In the first reception step of step S101, the patrol car 10 receives the designated vehicle information.

  In the first imaging step of step S102, the camera 11 of the patrol car 10 images a surrounding vehicle (first imaging vehicle B1).

  In the first recognition step of step S103, the vehicle number is recognized from the image of the vehicle photographed by the camera 11 of the patrol car 10 (the photographed image of the first photographed vehicle B1).

  In the first detection step of step S104, the vehicle number recognized from the image of the vehicle (the photographed image of the first photographed vehicle B1) and the vehicle number of the designated vehicle included in the designated vehicle information are collated and photographed. The difference between the vehicle (first photographed vehicle B1) and the designated vehicle is detected.

  In the first display step of step S105, when the same vehicle (first photographed vehicle B1) captured in the first detection step and the designated vehicle (designated vehicle A) are detected, a vehicle of the designated vehicle A The display / input device 14 of the patrol car 10 displays the number and the vehicle image of the first photographing vehicle photographed by the camera 11 of the patrol car 10 in the first photographing step.

  In a first input step of step S106, an input from an occupant (operator) of the patrol car 10 is received.

  In the first transmission step (transmission step) of step S107, the occupant (operator) of the patrol car 10 confirms that the first photographed vehicle B1 and the designated vehicle A are identical in the first input step. When the input is received, the first detected vehicle information E1 (detected vehicle information) including the vehicle number of the designated vehicle A and the vehicle image of the first photographed vehicle B1 is transmitted.

  Each step described above is performed by the patrol car 10 (first device). The first recognition step and the first detection step may be performed by a device other than the patrol car 10, for example, the central management device 40.

  In the second reception step of step S201, the portable monitoring device 20, which is a device different from the patrol car 10, receives the first detection vehicle information E1 (detection vehicle information).

  In the second imaging step of step S202, the camera 21 of the portable monitoring device 20 images a surrounding vehicle (second imaging vehicle B2).

  In the second recognition step of step S203, the vehicle number is recognized from the image of the vehicle (the photographed image of the second photographed vehicle B2) photographed by the camera 21 of the portable monitoring device 20.

  In the second detection step of step S204, the difference between the image of the vehicle (second photographed vehicle B2) taken by the camera 21 of the portable monitoring device 20 and the vehicle (first photographed vehicle B1) related to the first detection vehicle information E1 To detect

  In the second display step of step S205, the difference between the vehicle (second photographed vehicle B2) photographed in the second detection step and the vehicle (first photographed vehicle B1) related to the first detection vehicle information E1 is detected In this case, the portable monitoring device 20 is displayed by displaying the vehicle image and vehicle number of the first photographed vehicle B1 included in the first detected vehicle information E1 and the vehicle image of the second photographed vehicle B2 photographed by the camera 21. Present to the possessed observer (operator).

  In the second input step of step S206, an input from a monitoring person (operator) having the portable monitoring device 20 is received.

  In the second transmission step of step S207, the portable monitoring device 20 indicates that in the second input step, the second photographed vehicle B2 and the vehicle (first photographed vehicle B1) related to the first detection vehicle information E1 are identical. The second detected vehicle information E2 including the vehicle number included in the first detected vehicle information E1 and the vehicle image of the second photographed vehicle B2 when the surveillance worker (operator) having the has received an input indicating the confirmation Send

  Each step described above is performed by the portable monitoring device 20 (second device). The second recognition step and the second detection step may be performed by a device other than the portable monitoring device 20, for example, the central management device 40.

Other Embodiments
<1> In the above embodiment, an example in which the vehicle monitoring system 1 has the central management device 40 has been described. It is also possible to configure a vehicle monitoring system 1 without the central management device 40, that is, a so-called ad hoc vehicle monitoring system 1.

<2> In the above embodiment, the example in which the vehicle monitoring system 1 has the patrol car 10, the portable monitoring device 20, and the stationary monitoring device 30 has been described. The vehicle monitoring system 1 may have a plurality of patrol cars 10, may have a plurality of portable monitoring devices 20, and may have a plurality of stationary monitoring devices 30. It is also possible to configure a vehicle monitoring system 1 that does not include the stationary monitoring device 30. It is also possible to configure a vehicle monitoring system 1 having a plurality of patrol cars 10 and not including the portable monitoring device 20. It is also possible to configure a vehicle monitoring system 1 having a plurality of portable monitoring devices 20 and not including the patrol car 10.

<3> The designated vehicle information may include the appearance information of the designated vehicle. The appearance information is information related to the appearance of the vehicle, and is, for example, information such as color, vehicle type, and vehicle type. In this case, it is preferable to detect the difference between the photographed vehicle and the designated vehicle by checking the vehicle number and the appearance information. For example, the recognition unit 13c detects the vehicle number and the color of the vehicle from the image of the vehicle captured by the camera 11. The detection unit 13 d collates the vehicle number recognized by the recognition unit 13 c with the vehicle number included in the designated vehicle information. At the same time, the detection unit 13d collates the color of the vehicle recognized by the recognition unit 13c with the color of the designated vehicle included in the designated vehicle information. If both the vehicle number and the color match, it is determined that the photographed vehicle and the designated vehicle are the same, that is, the photographed vehicle is the designated vehicle.

  Similarly, detected vehicle information may include appearance information of a vehicle detected as a designated vehicle. The appearance information may be appearance information of a designated vehicle, or information such as a color detected from an image of a photographed vehicle, a vehicle type, a vehicle type, and the like. In this case, it is preferable to detect the difference between the photographed vehicle and the vehicle related to the detected vehicle information by checking the vehicle number and the appearance information. Also in this case, for example, in addition to the comparison between the recognized vehicle number and the vehicle number included in the detected vehicle information, the color of the recognized vehicle is compared with the color of the vehicle included in the detected vehicle information. When both the vehicle number and the color match, it is determined that the photographed vehicle and the vehicle related to the detected vehicle information are the same, that is, the photographed vehicle is a vehicle related to the detected vehicle information.

<4> The designated vehicle information may include an importance index indicating the importance of the designated vehicle. For example, designated vehicles related to traffic violations are included in designated vehicle information as classified as importance: high: designated vehicles relating to low importance and low, designated vehicles relating to serious crimes and designated vehicles urgently arranged. One of the patrol cars 10 of the vehicle monitoring system 1 is set as a special vehicle for criminal investigation. The detection unit 13d of the patrol car 10 is set to detect only specified vehicles whose importance index is high. If this is done, the patrol car 10 does not detect a designated vehicle of importance: low, so it can ignore the designated vehicle of low importance and concentrate on criminal investigation.

<5> The patrol car 10 and the portable monitoring device 20 are information such as shooting date and time which is time information included in a plurality of detected vehicle information stored in the storage units 13b and 23b, a shooting location which is position information, and a vehicle number A data processing unit may be provided that integrates and processes each vehicle number. Specifically, the data processing unit extracts a vehicle number, time information, and position information from a plurality of detected vehicle information, and for each predetermined vehicle number or a plurality of vehicle numbers, the shooting location is expressed in order of shooting date and time Create the That is, the data processing unit creates time-series position information related to at least one vehicle number. Furthermore, the data processing unit may display the generated time-series position information on the display unit.

  For example, in FIG. 1, when the data processing unit of the patrol car 10 receives the detected vehicle information E3 related to the specified vehicle A, it is included in the detected vehicle information E1 related to the specified vehicle A, the detected vehicle information E2 and the detected vehicle information E3. The vehicle number, the shooting date and time, and the shooting location are extracted, time-series positional information related to the vehicle number of the designated vehicle A is created, and displayed on the display unit 13e. The representation of the time-series positional information of the designated vehicle A may be a list in which shooting locations are arranged in order of shooting date and time, and a moving route is expressed by connecting shooting locations drawn on a map by a line in shooting date and time It may be something. When the time-series position information is displayed, the operator can easily grasp the tendency of the designated vehicle A to move, such as the direction in which the designated vehicle A is heading.

  The display of the time-series position information may be performed when the detected vehicle information is received, or may be performed when the confirmation by the operator is performed, or the operator operates the input unit to arbitrarily select the designated vehicle. You may do it when you select. Further, the predetermined vehicle number is a vehicle number included in the received detected vehicle information, a vehicle number confirmed by the operator, a vehicle number of any designated vehicle selected by the operator, or the like. Further, creation of time-series position information by the data processing unit can be performed at an arbitrary timing, such as when displaying time-series position information, as well as when detected vehicle information is received.

  The configurations disclosed in the above-described embodiments (including the other embodiments, and the same hereinafter) can be applied in combination with the configurations disclosed in the other embodiments as long as no contradiction arises. Also, the embodiments disclosed in the present specification are exemplifications, and the embodiments of the present invention are not limited thereto, and may be modified as appropriate without departing from the object of the present invention.

1: Vehicle monitoring system 10: Patrol car 11: Camera 12: Communication device 13: Control device 13a: Reception unit 13b: Storage unit 13c: Recognition unit 13d: Detection unit 13e: Display unit 13f: Input unit 13g: Transmission unit 14: Display input device 20: portable monitoring device 21: camera 22: communication device 23: control device 23a: control unit 23b: storage unit 23b: recognition unit 23d: detection unit 23e: display unit 23f: input unit 23g: transmission unit 24: Display input device 30: Stationary monitoring device 31: Camera 32: Communication device 33: Control device 33a: Receiver 33b: Memory 33c: Recognizer 33d: Detector 33e: Transmitter 40: Central management device 41: Communication device 42: Control device 42a: Reception unit 42b: Storage unit 42c: Transmission unit 42g: Transmission unit A: Designated vehicle B1: First photographing vehicle B2 Second image capturing vehicle B3: third captured vehicle D: Specifies vehicle information E1: first detecting vehicle information E2: second detecting vehicle information E3: third detection vehicle information

Claims (11)

A vehicle monitoring system comprising a first device and a second device, the vehicle monitoring system comprising:
The first device includes a first device camera, a first device storage unit, a first device recognition unit, a first device detection unit, and a first device transmission unit.
The first device camera captures a vehicle around the first device,
The first device storage unit stores designated vehicle information including a vehicle number of the designated vehicle,
The first device recognition unit recognizes a vehicle number from a captured image of a first captured vehicle captured by the first device camera.
The first device detection unit detects at least a difference between a vehicle number of the first photographed vehicle recognized by the first device recognition unit and a vehicle number included in the designated vehicle information.
When the first device detection unit detects the same vehicle number, the first device transmission unit detects first detected vehicle information including the vehicle number of the designated vehicle and the vehicle image of the first imaging vehicle. Send
The second device includes a second device camera, a second device reception unit, a second device storage unit, a second device recognition unit, a second device detection unit, and a second device display unit.
The second device camera captures a vehicle around the second device,
The second device receiving unit receives the first detected vehicle information,
The second device storage unit stores the first detected vehicle information received by the second device receiving unit,
The second device recognition unit recognizes a vehicle number from a vehicle image of a second photographed vehicle photographed by the second device camera.
The second device detection unit detects at least a difference between a vehicle number of the second photographed vehicle recognized by the second device recognition unit and a vehicle number included in the first detected vehicle information.
A vehicle monitoring system, wherein the second device display unit displays a vehicle image of the first photographing vehicle included in the first detection vehicle information when the second device detection unit detects the same vehicle number. The first device has a first device display unit and a first device input unit.
The first device display unit, when the first device detection unit detects the same vehicle number, a vehicle number of the designated vehicle, and a vehicle image of the first imaging vehicle captured by the first device camera Are displayed to the operator of the first device,
The first device input unit receives an input from an operator of the first device,
When the first device transmission unit receives an input to the effect that the operator of the first device has confirmed that the first device input unit is identical to the first imaging vehicle and the designated vehicle, The vehicle monitoring system according to claim 1, wherein the first detected vehicle information is transmitted. The second device has a second device input unit and a second device transmission unit.
When the second device detection unit detects the same vehicle, the second device display unit detects a vehicle number included in the first detection vehicle information and the second photographing vehicle captured by the second device camera. Displaying a vehicle image and presenting it to the operator of the second device;
The second device input unit receives an input from an operator of the second device,
The second device transmission unit indicates that the operator of the second device has confirmed that the second device input unit is the same as the second photographing vehicle and the vehicle related to the first detection vehicle information. The vehicle monitoring system according to claim 1 or 2, wherein second detection vehicle information including a vehicle number included in the first detection vehicle information and a vehicle image of the second imaging vehicle is transmitted when an input is received. . The specified vehicle information includes appearance information of the specified vehicle,
The first device recognition unit recognizes appearance information from a captured image of the first captured vehicle captured by the first device camera,
The first device detection unit collates the appearance information of the first photographed vehicle recognized by the first device recognition unit with the appearance information included in the designated vehicle information, in addition to the vehicle number, The vehicle monitoring system according to any one of claims 1 to 3, which detects differences between a photographing vehicle and the designated vehicle.   The vehicle monitoring system according to any one of claims 1 to 4, wherein the designated vehicle information includes an importance index indicating importance of the designated vehicle. The first detected vehicle information includes time information and position information,
The second device extracts the vehicle number, the time information, and the position information from the plurality of first detected vehicle information stored in the second device storage unit, and relates to at least one of the vehicle numbers The vehicle monitoring system according to any one of claims 1 to 5, further comprising a data processing unit that generates the series of position information. A monitoring device for monitoring surrounding vehicles, comprising a camera, a storage unit, a recognition unit, a detection unit, and a transmission unit,
The camera captures a vehicle around the monitoring device;
The storage unit stores designated vehicle information including a vehicle number of the designated vehicle,
The recognition unit recognizes a vehicle number from a photographed image of a photographed vehicle photographed by the camera.
The detection unit detects at least a difference between a vehicle number of the photographed vehicle recognized by the recognition unit and a vehicle number included in the designated vehicle information.
The monitoring device transmits detection vehicle information including a vehicle number of the designated vehicle and a vehicle image of the imaging vehicle when the detection unit detects the same vehicle. A monitoring apparatus including a camera, a receiving unit, a storage unit, a recognition unit, a detecting unit, and a display unit,
The camera captures a vehicle around the monitoring device;
The receiving unit receives detected vehicle information including a vehicle number and a vehicle image,
The storage unit stores the detected vehicle information received by the receiving unit,
The recognition unit recognizes a vehicle number from a vehicle image of a photographed vehicle photographed by the camera.
The detection unit detects at least a difference between a vehicle number of the photographed vehicle recognized by the recognition unit and a vehicle number included in the detected vehicle information.
The monitoring device displays the vehicle image included in the detected vehicle information when the detection unit detects the same vehicle. The detected vehicle information includes time information and position information,
A data processing unit that extracts the vehicle number, the time information, and the position information from the plurality of detected vehicle information stored in the storage unit, and creates the time-series position information related to at least one of the vehicle numbers The monitoring device according to claim 8, further comprising: A monitoring apparatus including a camera, a receiving unit, a storage unit, a recognition unit, a detecting unit, a display unit, an input unit, and a transmitting unit,
The camera captures a vehicle around the monitoring device;
The receiving unit receives vehicle information including a vehicle number,
The storage unit stores the vehicle information received by the receiving unit,
The recognition unit recognizes a vehicle number from a vehicle image of a photographed vehicle photographed by the camera.
The detection unit detects at least a difference between a vehicle number of the photographed vehicle recognized by the recognition unit and a vehicle number included in the vehicle information,
When the detection unit detects the same vehicle number, the display unit displays the vehicle number included in the vehicle information and the vehicle image of the photographed vehicle photographed by the camera, and the display unit Present to the operator,
The input unit receives an input from an operator of the monitoring device.
When the transmission unit receives an input to the effect that the operator of the monitoring device has confirmed that the input unit is the same as the photographing vehicle and the vehicle related to the vehicle information, the operator is the same. A monitoring device that transmits detected vehicle information including a vehicle number of a confirmed vehicle and a vehicle image of the photographed vehicle photographed by the camera. An information sharing method for sharing detected vehicle information among a plurality of devices, comprising:
A first photographing step in which a camera of the first device photographs a vehicle;
A first recognition step of recognizing a vehicle number from a photographed image of the first photographed vehicle photographed by the camera of the first device;
A first detection step of detecting a difference between a vehicle number recognized from a photographed image of the first photographed vehicle and a vehicle number of a designated vehicle;
When it is detected that the vehicle number of the first photographed vehicle and the vehicle number of the designated vehicle are detected, transmission is performed to transmit detected vehicle information including the vehicle number of the designated vehicle and the vehicle image of the first photographed vehicle Step and
A receiving step in which a second device other than the first device receives the detected vehicle information;
A second imaging step in which a camera of the second device captures a vehicle;
A second recognition step of recognizing a vehicle number from a photographed image of a second photographed vehicle photographed by a camera of the second device;
A second detection step of detecting a difference between a vehicle number recognized from a photographed image of the second photographed vehicle and a vehicle number included in the detected vehicle information;
When it is detected that the vehicle number of the second imaging vehicle and the vehicle number according to the detected vehicle information are detected, the display device of the second device displays the vehicle image of the first imaging vehicle included in the detected vehicle information And displaying the information.

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