WO2013145962A1 - 車両番号データ処理システム、車両番号データ処理方法、車両番号データ処理装置、プログラム、及び記録媒体 - Google Patents

車両番号データ処理システム、車両番号データ処理方法、車両番号データ処理装置、プログラム、及び記録媒体 Download PDF

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Publication number
WO2013145962A1
WO2013145962A1 PCT/JP2013/054336 JP2013054336W WO2013145962A1 WO 2013145962 A1 WO2013145962 A1 WO 2013145962A1 JP 2013054336 W JP2013054336 W JP 2013054336W WO 2013145962 A1 WO2013145962 A1 WO 2013145962A1
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WIPO (PCT)
Prior art keywords
vehicle number
number data
vehicle
information
optical character
Prior art date
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PCT/JP2013/054336
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English (en)
French (fr)
Japanese (ja)
Inventor
拓馬 岡▲崎▼
健太 中尾
Original Assignee
三菱重工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to IN1885MUN2014 priority Critical patent/IN2014MN01885A/en
Priority to SG11201405962VA priority patent/SG11201405962VA/en
Priority to MYPI2014702702A priority patent/MY183070A/en
Publication of WO2013145962A1 publication Critical patent/WO2013145962A1/ja

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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
    • G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems

Definitions

  • the present invention relates to a vehicle number data processing system, a vehicle number data processing method, a vehicle number data processing device, a program, and a recording medium.
  • the present invention is a vehicle number data processing system for processing vehicle number data including information of a vehicle number of a license plate of a vehicle obtained by optical character recognition of an image, a vehicle number data processing method, a vehicle number data processing device
  • the present invention relates to a program that causes a computer to function as the vehicle number data processing device, and a recording medium recording the program.
  • the automatic toll collection system for toll roads inserts an IC (Integrated Circuit) card recording contract information etc. into the onboard equipment attached to the vehicle, and wirelessly installs between the roadside antenna and the onboard equipment installed at the tollgate of the toll road It is a system which performs communication and performs payment by recording information such as a toll on both the toll road computer system connected to the roadside antenna and the IC card.
  • IC Integrated Circuit
  • FIG. 14 shows an example of the usage environment of the toll road automatic toll collection system 900.
  • the user of the automatic toll collection system 900 needs to attach an on-vehicle device to the vehicle.
  • the vehicle-mounted device is a wireless device for wirelessly communicating information necessary for charging a toll with the roadside antennas 930 and 960.
  • the vehicle is equipped with an on-board unit that charges and processes tolls according to the type of the vehicle.
  • a roadside antenna 930, a camera 940, a sensor 950, and a roadside antenna 960 are sequentially provided in the same lane. Then, when the vehicle enters the communication range of the roadside antenna 930 of the lane, the on-vehicle device deducts the toll from the balance of the electronic money charged in the IC (Integrated Circuit) card inserted in the on-vehicle device.
  • IC Integrated Circuit
  • control device 920 identifies, for example, the vehicle type of the vehicle based on the size of the vehicle indicated by the data.
  • the roadside antenna 960 When the vehicle enters the communication range of the roadside antenna 960, the roadside antenna 960 receives data indicating the tolls withdrawn from the balance of the electronic money from the on-board unit, and sends the data to the control device 920. Forward.
  • control device 920 determines whether the toll removal amount indicated by the data is valid as the toll rate of the vehicle type specified as described above. Do. For example, if the on-board unit attached to the vehicle does not correspond to the vehicle type of the vehicle, the toll fee corresponding to the specified vehicle type is not withdrawn, so the control device 920 sets the removal amount as the toll. Judge as not valid. Further, also in the case where the balance of the electronic money is insufficient, or in the case where the vehicle-mounted device is not attached, the control device 920 determines that the deduction amount is not valid as a toll.
  • control device 920 determines that the amount of removal is not valid as a toll
  • sensor 950 detects the rear end of the vehicle
  • camera 940 captures an image of the rear end of the vehicle and controls its image data. Send to device 920.
  • the license plate provided at the rear end of the vehicle is shown.
  • the control device 920 receives the image data transmitted from the camera 940, the control device 920 transmits the image data to the server 910.
  • the server 910 When the server 910 receives the image data transmitted from the control device 920, the server 910 optically recognizes the image data and reads the vehicle number displayed on the license plate. In this way, the road operator can identify the vehicle number of the violating vehicle.
  • the camera for imaging the license plate of a vehicle is arranged in the width direction of the upper direction of the road so that the imaging ranges next to each other may overlap.
  • the imaging ranges next to each other may overlap.
  • vehicles traveling in the lane can be imaged by any of the cameras.
  • a vehicle traveling at a position where the imaging ranges of two adjacent cameras overlap each other is imaged by the two cameras.
  • the image which is not the license plate of the illegal vehicle is included. Therefore, in the upper-level system, processing is performed to determine whether the license plate shown in the image is that of an unauthorized vehicle. Therefore, the image data captured by each camera is transmitted to the upper system.
  • Patent Document 1 describes a method of recognizing a moving object that recognizes an object entering a measurement area in which imaging regions of a plurality of cameras are connected by image processing.
  • this moving object recognition method measurement areas are set so as to overlap adjacent imaging areas by a predetermined width necessary to avoid recognition errors of an object or its elements, and are simultaneously imaged by each camera The recognition processing of the object is performed based on the image.
  • the measurement area can be expanded. Recognition and recognition of many mobiles can be improved.
  • the method of recognizing a moving object described in Patent Document 1 is to aggregate plural vehicle number data to generate complete vehicle number data, and an optical character recognition is performed on an image captured by each camera.
  • the data indicating the vehicle number of the license plate obtained the data indicating the vehicle number of the same vehicle can not be processed as one data.
  • a vehicle number data processing system for processing vehicle number data including information of a vehicle number of a license plate of a vehicle obtained by optical character recognition of an image, in order to solve the above problems.
  • the vehicle number data processing device is provided with a plurality of imaging devices provided to overlap the imaging ranges and imaging the road with time, and a vehicle number data processing device for processing vehicle number data.
  • the image data captured by the imaging device having vehicle number data including the information of the vehicle number obtained by optical character recognition of the image captured by the image capturing device and the imaging range overlapping the imaging range of the one imaging device Of the vehicle number data including the information of the vehicle number obtained by recognition, one of the vehicle number data is left, and the other is related to the same vehicle by deleting the vehicle number data. Having a vehicle number data integration section that integrates the vehicle number data including broadcast.
  • the one imaging device captures an image from among the vehicle number data obtained by optical character recognition of an image captured by an imaging device having an imaging range overlapping the imaging range of the one imaging device.
  • the vehicle number data integration unit further includes a vehicle number search unit for searching for vehicle number data including the same information as vehicle number information included in vehicle number data obtained by optical character recognition of an image. Vehicle number data obtained by optical character recognition of an image captured by an imaging device may be integrated with vehicle number data searched by the vehicle number search unit.
  • the vehicle number data processing device determines whether or not the vehicle number obtained by optical character recognition of an image captured by one imaging device includes a portion in which the optical character can not be recognized.
  • the vehicle number search unit further includes a determination unit, and when the optical character recognition determination unit determines that the vehicle number does not include the portion in which the optical character can not be recognized, Vehicle number data including the same information may be searched.
  • the vehicle number data processing device captures an image of an imaging device having an imaging range in which a position in an image of a vehicle number obtained by optical character recognition of an image captured by one imaging device overlaps an imaging range of the one imaging device
  • the vehicle further includes a vehicle number position determination unit that determines whether or not the range is within the range, and the optical character recognition determination unit determines that the vehicle is within the imaging range of the imaging device having an imaging range overlapping the imaging range of one imaging device.
  • the number position determination unit makes a determination, it may be determined whether the vehicle number includes a portion in which the optical character can not be recognized.
  • the vehicle number data processing apparatus further includes an integrated data determination unit that determines whether or not the vehicle number data integration unit integrates the vehicle number data, and the vehicle number position determination unit If the integrated data determination unit determines that the vehicle number data does not correspond to the vehicle number data, it is determined whether the position in the image of the vehicle number included in the vehicle number data is within the imaging range of another imaging device. You may
  • a plurality of vehicle number data generation devices are provided, one for each image pickup device, and optical character recognition of an image picked up by the corresponding image pickup device to generate vehicle number data, vehicle number data processing
  • the apparatus receives, from the vehicle number data generating device, a check data receiving unit that receives check data for checking the soundness of the network; a vehicle number data receiving unit that receives vehicle number data from the vehicle number data generating device;
  • the vehicle number data reception unit further includes a reception presence determination unit that determines whether the check data reception unit receives the check data after the vehicle number data reception unit receives the vehicle number data, and the integrated data determination unit If the check data reception unit determines that the check data reception unit has received the check data after the vehicle number data reception unit receives the To about the vehicle ID data, it may determine whether the vehicle number data integration unit is a vehicle number data after integration.
  • the vehicle number data generation device performs optical character recognition on the image captured by the corresponding imaging device to generate vehicle number data including the information of the vehicle number of the license plate of the vehicle, the vehicle detects the vehicle by the corresponding imaging device Generating vehicle number data further including the information of the first time and the information of the last time, and the vehicle number data processing device is assumed that the vehicle number includes a portion that could not be recognized as an optical character
  • the optical character recognition determination unit makes a determination
  • the optical character recognition unit that complements the characters of the vehicle number of the portion where the optical character could not be recognized, and the portion where the vehicle character can not recognize the optical character are included
  • the optical character recognition determination unit determines that the vehicle ID number has been set, or if the vehicle number search unit can not search for vehicle number data including information on the same vehicle number
  • optical character recognition is obtained from an image captured by the one imaging device
  • the same time zone search unit for searching for vehicle number data including
  • the vehicle number data generation device performs optical character recognition on the image captured by the corresponding imaging device, and generates vehicle number data including the information of the vehicle number of the license plate of the vehicle.
  • the vehicle number data processing device further generates the vehicle number data, and the vehicle number data processing device searches the vehicle number data including the information of the same vehicle number among the vehicle number data searched by the same time zone search unit.
  • the vehicle number data integration unit further includes a type search unit, and when the number plate type search unit searches for one vehicle number data, the vehicle number data and an image captured by one imaging device are optical character recognition And the obtained vehicle number data may be integrated.
  • the vehicle number data generation device further includes information of the vehicle speed of the vehicle in recognizing the characters captured by the corresponding imaging device by optical character recognition and generating vehicle number data including information of the vehicle number of the license plate of the vehicle.
  • Vehicle number data is generated, and the vehicle number data processing device is a vehicle obtained by optical character recognition of an image captured by one imaging device when the same number plate type searching unit searches for a plurality of vehicle number data.
  • the vehicle number data integration unit further includes a vehicle speed evaluation unit that evaluates the degree of coincidence between the vehicle speed and the vehicle speed. It may integrate vehicle number data including information of the vehicle speed.
  • vehicle number data processing device when the same number plate type searching unit searches a plurality of vehicle number data, information included in the vehicle number data obtained by optical character recognition of an image captured by one imaging device Included in vehicle number data obtained by optical character recognition of an image captured by an imaging device having a time zone from the first time shown to the last time shown and an imaging range overlapping the imaging range of the one imaging device
  • vehicle number data integration unit further includes a time zone evaluation unit that evaluates the degree to which the time zone from the first time to the last time indicated by the information matches, and the vehicle number data integration unit Vehicle number data including high time information may be integrated.
  • the vehicle number data generation device performs optical character recognition on the image captured by the corresponding imaging device to generate vehicle number data including the information of the vehicle number of the license plate of the vehicle, the vehicle detects the vehicle by the corresponding imaging device Vehicle number data further including information on the detected position of the vehicle with respect to the detected positions of all the vehicles detected in the designated time zone, and the vehicle number data processing device searches a plurality of vehicle number data for the same number plate type
  • the detected position indicated by the information contained in the vehicle number data obtained by Fits further comprising a detection position evaluation unit for evaluating the vehicle number data integration section may integrate vehicle number data including a high detection position information of the degree to which the detected position evaluation unit match evaluated.
  • the imaging time of the image during the optical character recognition processing of the vehicle number data generation device is The imaging time determination unit further determines whether the time is earlier than the last time when the vehicle included in the vehicle number data obtained by optical character recognition of an image captured by one imaging device is detected. If the imaging time determination unit determines that the imaging time is not earlier than the last time, the vehicle number data integration unit is obtained by optical character recognition of an image captured by one imaging device. Vehicle number data may be used as the integrated vehicle number data.
  • a vehicle number data processing method for processing vehicle number data including information of a vehicle number of a license plate of a vehicle obtained by optical character recognition of an image, wherein an imaging range is overlapped And vehicle number data including information of a vehicle number obtained by optical character recognition of an image captured by one imaging device among a plurality of imaging devices imaging the road with time.
  • vehicle number data including the information of the vehicle number obtained by optical character recognition of the image captured by the imaging device having the imaging range overlapping the imaging range of the imaging device, leaving one of the vehicle number data, the other
  • the vehicle number data integration step of integrating the vehicle number data including the information on the same vehicle by deleting the vehicle number data of.
  • a vehicle number data processing apparatus for processing vehicle number data including information of a vehicle number of a license plate of a vehicle obtained by optical character recognition of an image, wherein an imaging range is overlapped And vehicle number data including information of a vehicle number obtained by optical character recognition of an image captured by one imaging device among a plurality of imaging devices imaging the road with time.
  • vehicle number data including the information of the vehicle number obtained by optical character recognition of the image captured by the imaging device having the imaging range overlapping the imaging range of the imaging device, leaving one of the vehicle number data, the other
  • a vehicle number data integration unit that integrates vehicle number data including information on the same vehicle by deleting the vehicle number data.
  • a program causing a computer to function as a vehicle number data processing device for processing vehicle number data including information of a vehicle number of a license plate of a vehicle obtained by optical character recognition of an image.
  • a computer number is provided so that the imaging ranges overlap, and a vehicle number obtained by optical character recognition of an image captured by one imaging device among a plurality of imaging devices imaging the road with time.
  • vehicle number data including information and vehicle number data including vehicle number information obtained by optical character recognition of an image captured by an imaging device having an imaging range overlapping the imaging range of the one imaging device
  • Vehicle number data base which integrates vehicle number data including information on the same vehicle by leaving one vehicle number data and deleting the other vehicle number data To function as a part.
  • a program for causing a computer to function as a vehicle number data processing device for processing vehicle number data including information of a vehicle number of a license plate of a vehicle obtained by optical character recognition of an image The recording medium is a recording medium, and the computer is provided such that the imaging ranges overlap, and an image captured by one imaging device is obtained by optical character recognition among a plurality of imaging devices imaging the road with time.
  • Vehicle number data including information of the identified vehicle number, and a vehicle number including information of the vehicle number obtained by optical character recognition of an image captured by the imaging device having an imaging range overlapping the imaging range of the one imaging device Of the data, leaving one of the vehicle number data and deleting the other vehicle number data integrates the vehicle number data including information on the same vehicle Recording the program to function as the vehicle number data integration unit.
  • FIG. 2 is a diagram showing an example of a block configuration of a vehicle number data processing device 110. It is a figure which shows an example of the information stored in the vehicle
  • FIG. 1 is a diagram showing an example of a block configuration of a vehicle number data processing device 110. It is a figure which shows an example of the information stored in the vehicle
  • FIG. 6 is a diagram showing an example of an operation sequence of a vehicle number data processing device 110 and a vehicle number data generation device 150. It is a figure which shows an example of the operation
  • FIG. It is a figure which shows an example of the operation
  • FIG. It is a figure which shows an example of the operation
  • FIG. It is a figure which shows an example of the operation
  • FIG. It is a figure which shows an example of the operation
  • FIG. It is a figure which shows an example of the hardware constitutions of the computer 800 which comprises the vehicle
  • FIG. 1 shows an example of a usage environment of a vehicle number data processing system 100 according to an embodiment.
  • the vehicle number data processing system 100 is a system for processing vehicle number data.
  • the vehicle number data is data including at least information of a vehicle number of a license plate of a vehicle obtained by optical character recognition of an image.
  • Vehicle number data processing system 100 includes vehicle number data processing device 110, a plurality of cameras 130a-d (hereinafter collectively referred to as camera 130), and a plurality of vehicle number data generation devices 150a-d (hereinafter referred to as vehicle number data generation).
  • Device generally referred to as device 150
  • the camera 130 may be an example of the “imaging device” in the present invention.
  • Vehicle number data processing device 110 is electrically connected to vehicle number data generation device 150. Then, the vehicle number data processing device processes the vehicle number data.
  • the cameras 130 are arranged side by side in the width direction at the gate G above the road R10 with a plurality of lanes R11 to R13 so that the imaging ranges of adjacent ones overlap.
  • the imaging range Aa of the camera 130a and the imaging range Ab of the camera 130b overlap.
  • the imaging range Ab of the camera 130 b and the imaging range Ac of the camera 130 c overlap.
  • the imaging range Ac of the camera 130c and the imaging range Ad of the camera 130d overlap.
  • the camera 130 is electrically connected to one vehicle number data generation device 150. Then, the camera 130 captures an image of the road R10 obliquely below with time.
  • One vehicle number data generation device 150 is provided corresponding to each camera 130. Further, the vehicle number data generation device 150 is electrically connected to the corresponding one camera 130. Then, the vehicle number data generation device 150 performs optical character recognition on the image captured by the corresponding camera 130, and vehicle number data including at least the information of the vehicle number of the license plate of the vehicle obtained by optical character recognition of the image. Generate More specifically, the vehicle number data generation device 150 performs optical character recognition on the image captured by the corresponding camera 130, and generates vehicle number data including the information of the vehicle number of the license plate of the vehicle. Vehicle number data may also be generated, including other information about the vehicle.
  • the vehicle number data generation device 150 generates vehicle number data further including information on the first time when the vehicle was detected by the corresponding camera 130 and information on the last time. Further, the vehicle number data generation device 150 generates vehicle number data further including information on the type of the license plate of the vehicle. In addition, the vehicle number data generation device 150 generates vehicle number data further including information of the vehicle speed of the vehicle. In addition, the vehicle number data generation device 150 generates vehicle number data further including information on the detected position of the vehicle with respect to the detected positions of all the vehicles detected in the time zone in which the vehicle is detected by the corresponding camera 130.
  • the vehicle number data processing system 100 may include a plurality of vehicle number data processing devices 110.
  • the vehicle number data processing system 100 includes the plurality of vehicle number data generation devices 150 corresponding to the plurality of cameras 130.
  • the vehicle number data processing system 100 may include one vehicle number data generation device 150 corresponding to a plurality of cameras 130.
  • FIG. 2 shows an example of a block configuration of the vehicle number data processing device 110.
  • Vehicle number data processing device 110 includes vehicle number data reception unit 112, check data reception unit 111, reception / non-existence determination unit 113, integrated data determination unit 114, vehicle number position determination unit 115, optical character recognition determination unit 116, and vehicle number Search unit 117, same time zone search unit 119, character complement unit 118, same number plate type search unit 120, vehicle speed evaluation unit 121, time period evaluation unit 122, detected position evaluation unit 123, imaging time judgment unit 124, vehicle number data An integration unit 125 and a vehicle number data storage unit 126 are provided. In the following description, the function and operation of each component will be described in detail.
  • Vehicle number data reception unit 112 receives vehicle number data from vehicle number data generation device 150.
  • the check data receiving unit 111 receives the check data from the vehicle number data generation device 150.
  • the check data is data for checking the soundness of the network between the vehicle number data processing device 110 and the vehicle number data generation device 150.
  • the reception determination unit 113 determines whether the check data receiving unit receives the check data.
  • the integrated data determination unit 114 determines whether or not the vehicle number data is vehicle number data after being integrated by the vehicle number data integration unit 125. More specifically, in the case where the integrated data determination unit 114 determines that the check data reception unit 111 has received check data after the vehicle number data reception unit 112 receives vehicle number data, the integrated data determination unit 114 determines Then, the vehicle number data integration unit 125 determines whether or not the vehicle number data is integrated.
  • the integrated data determination unit 114 determines that the vehicle number position determination unit 115 is not the vehicle number data integrated by the vehicle number data integration unit 125, the vehicle number included in the vehicle number data It is determined whether or not the position in the image is within the imaging range of the adjacent camera 130.
  • the optical character recognition determination unit 116 determines whether a vehicle number obtained by performing optical character recognition on an image captured by one camera 130 includes a portion in which the optical character can not be recognized. More specifically, when the vehicle number position determination unit 115 determines that the optical character recognition determination unit 116 is within the imaging range of the camera 130 next to one camera 130, the optical character recognition is performed on the vehicle number It is determined whether or not the part that could not be done is included.
  • the vehicle number search unit 117 performs optical character recognition on the image captured by the one camera 130.
  • Vehicle number data including the same information as the vehicle number information included in the obtained vehicle number data is searched. More specifically, if the optical character recognition determination unit 116 determines that the vehicle number does not include the portion in which the optical character can not be recognized, the vehicle number search unit 117 Search for vehicle number data containing the same information as the information. Further, the same vehicle number search unit 117 searches for vehicle number data including the same information as the information of the vehicle number for which the character complementing unit 118 has complemented the characters among the vehicle number data searched by the same time zone search unit 119. .
  • the character complementing unit 118 detects the vehicle in the portion in which the optical character can not be recognized. Complete the letters of the number.
  • vehicle number data including information of the same vehicle number, when the optical character recognition determination unit 116 determines that the vehicle number includes a portion in which the optical character can not be recognized.
  • vehicle number data obtained by optical character recognition of an image captured by the camera 130 next to the one camera 130 when the same vehicle number search unit 117 can not search for the same vehicle number.
  • Vehicle number data including information on the first time or information on the last time corresponding to the time zone from the first time to the last time included in the vehicle number data obtained by optical character recognition of the captured image Search for
  • the same license plate type searching unit 120 Vehicle number data obtained by optical character recognition of an image captured by the camera 130 from vehicle number data obtained by optical character recognition of an image captured by the camera 130 next to the camera 130 Search for vehicle number data that includes the same information as the license plate type information included in.
  • the vehicle speed evaluation unit 121 uses information included in vehicle number data obtained by optical character recognition of an image captured by one camera 130 when the same license plate type search unit 120 searches for a plurality of vehicle number data. The degree of agreement between the indicated vehicle speed and the vehicle speed indicated by the information contained in the vehicle number data obtained by optical character recognition of the image captured by the camera 130 next to the one camera 130 is evaluated.
  • the time zone evaluation unit 122 is information included in vehicle number data obtained by performing optical character recognition on an image captured by one camera 130 when the same license plate type search unit 120 searches for a plurality of vehicle number data. Time zone from the first time to the last time indicated by the first time, and the first time indicated by the information included in the vehicle number data obtained by the optical character recognition of the image captured by the camera 130 next to the one camera 130 The degree of agreement with the time zone from the time of day to the last time is evaluated.
  • the detection position evaluation unit 123 is information included in vehicle number data obtained by optical character recognition of an image captured by one camera 130 when the same license plate type search unit 120 searches for a plurality of vehicle number data. The degree of coincidence between the detected position indicated by and the detected position indicated by the information contained in the vehicle number data obtained by optical character recognition of the image captured by the camera 130 next to the one camera 130 is evaluated. .
  • the imaging time determination unit 124 captures an image during the optical character recognition process of the vehicle number data generation device 150 when the same time zone search unit 119 or the same license plate type search unit 120 can not search for the vehicle number data. It is determined whether the time is a time before the last time when the vehicle included in the vehicle number data obtained by optical character recognition of an image captured by one camera 130 is detected.
  • Vehicle number data integration unit 125 includes vehicle number data including information of a vehicle number obtained by optical character recognition of an image captured by one camera 130, and an image captured by camera 130 next to the one camera 130. Of the vehicle number data including the information of the vehicle number obtained by optical character recognition, leaving one of the vehicle number data and deleting the other vehicle number data, so that the vehicle number including the information on the same vehicle Consolidate data. More specifically, the vehicle number data integration unit 125 acquires vehicle number data obtained by optical character recognition of an image captured by one camera 130, and vehicle number data searched by the vehicle number search unit 117. Integrate.
  • the vehicle number data integration unit 125 captures an image of the vehicle number data searched by the same license plate type searching unit 120 and the one camera 130. The image is integrated with the vehicle number data obtained by optical character recognition. In addition, the vehicle number data integration unit 125 integrates the vehicle number data including the information of the vehicle speed with the high degree of coincidence evaluated by the vehicle speed evaluation unit 121. In addition, the vehicle number data integration unit 125 integrates the vehicle number data including the information of the high matching time evaluated by the time zone evaluation unit 122. Further, the vehicle number data integration unit 125 integrates the vehicle number data including the information of the detected position having a high degree of coincidence evaluated by the detected position evaluation unit 123. In addition, when the imaging time determination unit 124 determines that the imaging time is not before the last time, the vehicle number data integration unit 125 can obtain an image captured by one camera 130 by optical character recognition. The acquired vehicle number data is taken as the integrated vehicle number data.
  • the vehicle number data storage unit 126 includes data ID (identifier), image ID, vehicle number, optical character recognition evaluation value, license plate type, vehicle number detection area center position, vehicle detection area center position, vehicle detection evaluation value, vehicle speed (Km / h), imaging time (year / month / day / hour: minute: second), camera ID, first detection time (year / month / day / hour: minute: second), last detection time (year / month / day Month / day / hour: minute: second), number of vehicles, detection position, check data reception time (year / month / day / hour: minute: second), and integrated? Each information (Yes or No) is stored in association with each other.
  • the data ID information is information for uniquely identifying each vehicle number data among a plurality of vehicle number data. More specifically, the data ID information is information added when each piece of information included in the vehicle number data is stored in the vehicle number data storage unit 126.
  • the information of the image ID is information for uniquely identifying each image in a plurality of images captured by the camera 130. More specifically, the vehicle number data generation device 150 stores an image in which the vehicle number displayed on the license plate is most easily visible among the images showing the same vehicle. Here, the image in which the vehicle number displayed on the license plate is most easily viewed is, for example, an image in which the license plate is most widely captured.
  • the information of the image ID is information for identifying the image stored in the vehicle number data generation device 150 in this manner.
  • the information of the vehicle number is information indicating the vehicle number of the vehicle shown in the image. More specifically, the vehicle number data generation device 150 performs optical character recognition on the image in which the vehicle number displayed on the number plate is most clearly displayed among the images in which the same vehicle is shown, and the number Read the letters of the vehicle number displayed on the plate.
  • the information of the vehicle number is the information that the vehicle number data generation device 150 recognizes and reads the optical character as described above.
  • the information on the optical character recognition evaluation value is information indicating the degree to which the optical character recognition result can be trusted. More specifically, the information of the optical character recognition evaluation value of the present embodiment is represented by a decimal number having “1” as the maximum value, and the larger the numerical value, the more reliable the optical character recognition result can be. It means that the degree is high.
  • the information on the type of license plate is information indicating the type of license plate of the vehicle shown in the image. More specifically, the information on the type of license plate indicates, for example, how many steps the vehicle number is displayed on, for example, the license plate for many wheels.
  • the information of the vehicle number detection area center position is information indicating the position in the image of the center point of the area occupied by the vehicle number detected in the image in which the optical character recognition is performed. More specifically, the information on the center position of the vehicle number detection area is, for example, a position in an orthogonal coordinate system with the X axis in the horizontal direction of the image and the Y axis in the vertical direction of the image from the upper left of the image. Show.
  • the information of the vehicle detection area center position is information indicating the position in the image of the center point of the area occupied by the vehicle detected in the image subjected to the optical character recognition. More specifically, the information on the center position of the vehicle detection area indicates, for example, a position in an orthogonal coordinate system with the X axis in the horizontal direction of the image and the Y axis in the vertical direction of the image with the upper left of the image as a base point. .
  • the information of the vehicle detection evaluation value is information indicating the degree to which the detection result of detecting the object shown in the image as the vehicle can be trusted. More specifically, the vehicle number data generation device 150 detects whether or not the object is a vehicle based on, for example, the feature points of the object other than the road shown in the image. The information of the vehicle detection evaluation value indicates the degree to which the detection result can be relied upon.
  • the information on the vehicle speed (km / h) is information indicating the speed of the vehicle shown in the image. More specifically, the vehicle speed is measured, for example, by a measuring device (not shown).
  • Information of imaging time (year / month / day / hour: minute: second) is information indicating a time when an image is imaged. More specifically, the imaging time information is simultaneously recorded in the image file when the camera 130 captures an image.
  • the camera ID information is information for uniquely identifying each camera 130 in the plurality of cameras 130. More specifically, the vehicle number data generation device 150 generates vehicle number data including information of a camera ID indicating the corresponding camera 130.
  • the information of the first detection time is information indicating the time when the vehicle shown in the image is first detected. More specifically, the camera 130 continuously captures an image in which a vehicle traveling on the road R ⁇ b> 10 is captured before the vehicle passes through the imaging range.
  • the information on the first detection time indicates the imaging time of the first image captured among the plurality of images in which the same vehicle is thus taken.
  • the information on the last detection time (year / month / day / hour: minute: second) is information indicating the time when the vehicle shown in the image was last detected. More specifically, the information of the last detection time (year / month / day / hour: minute: second) is an image captured last among a plurality of images showing the same vehicle as described above Indicates the imaging time of the
  • the information on the number of vehicles is information indicating the number of all vehicles detected by the camera 130 from the first detection of a vehicle shown in the image by the camera 130 to the last detection. If it explains more concretely, for example, camera 130b of this embodiment is picturizing imaging range Ab which extends to lane R11 and lane R12. Therefore, the camera 130b simultaneously images the vehicle traveling in the lane R11 and the vehicle traveling in the lane R12. For example, when two vehicles travel in the imaging range of lane R12 while detecting a vehicle traveling in lane R11, camera 130b detects a vehicle traveling in lane R11; It means that it has detected a set of vehicles.
  • the information on the detected position is for the detected position in the direction of the width of all the vehicles detected by the camera 130 from when the vehicle shown in the image is first detected by the camera 130 until it is finally detected,
  • This is information indicating the detection position in the width direction of the vehicle shown in the image identified by the information of the image ID.
  • the camera 130b detects a vehicle traveling in the lane R11 In the meanwhile, three vehicles were detected.
  • the detection position in the width direction of the vehicle traveling in the lane R11 is the first one from the left among the three vehicles in the traveling direction.
  • Information on the check data reception time (year / month / day / hour: minute: second) is received when the vehicle number data processing device 110 receives vehicle number data from the vehicle number data generation device 150. Is information indicating the time of last reception of the check data from the vehicle number data generation device 150. More specifically, the information on the check data reception time (year / month / day / hour: minute: second) is information to be compared with the latest check data reception time.
  • the (Yes or No) information is information indicating whether or not the vehicle number data including each piece of information associated with the image ID information is integrated. More specifically, is it integrated? The information of "Yes” indicates that the data is the data after the vehicle number data processing device 110 performs the integration process. Meanwhile, integrated? The information of “No” indicates that the data is before the vehicle number data processing device 110 performs integration processing.
  • FIG. 7 shows an example of an operation sequence of the vehicle number data processing device 110 and the vehicle number data generation device 150.
  • this operation sequence transmission and reception processing of check data will be described in detail. Furthermore, in the explanation of this operation flow, FIGS. 1 to 6 will be referred to together.
  • the vehicle number data generation device 150 transmits the check data to the vehicle number data processing device 110 (S101). More specifically, the vehicle number data generation device 150 transmits check data at predetermined time intervals, for example.
  • the check data includes information of the imaging time of the image during the optical character recognition process.
  • the vehicle number data reception unit 111 of the vehicle number data processing device 110 receives the check data transmitted from the vehicle number data generation device 150
  • the vehicle number data reception unit 112 and the reception presence / absence determination unit 113 indicate the reception time.
  • the check data receiving unit 111 transmits, to the imaging time determination unit 124, data indicating the imaging time of the image being subjected to the optical character recognition process, which is included in the check data transmitted from the vehicle number data generation device 150.
  • the vehicle number data receiving unit 112 and the reception / non-existence determining unit 113 of the vehicle number data processing device 110 can perform processing using the latest check data reception time. Further, the imaging time determination unit 124 of the vehicle number data processing device 110 can perform processing using the imaging time of the image during the optical character recognition processing by the vehicle number data processing device 110.
  • FIG. 8 shows an example of an operation sequence of the vehicle number data processing device 110, the camera 130, and the vehicle number data generation device 150.
  • this operation sequence transmission and reception processing of vehicle number data will be described in detail. Furthermore, in the explanation of this operation flow, FIGS. 1 to 7 will be referred to together.
  • the camera 130 captures an image of an imaging range using a semiconductor element that reacts to light, such as a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) (S201), and outputs the image as image data (S202). More specifically, the camera 130 captures an image at a speed of, for example, about 20 (sheets / second).
  • a semiconductor element that reacts to light such as a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) (S201)
  • CMOS complementary metal oxide semiconductor
  • the vehicle number data generation device 150 When receiving the input of the image data output from the camera 130, the vehicle number data generation device 150 performs optical character recognition on the image data to generate vehicle number data (S203). More specifically, if the vehicle does not appear in the image, the vehicle number data generation device 150 discards the image data. On the other hand, when the vehicle is shown in the image, the vehicle number data generation device 150 stores the image data. Here, as described above, the camera 130 captures an image at a speed of about 20 (sheets / second). Therefore, the camera 130 continuously outputs image data in which the same vehicle is shown. When the vehicle number data generation device 150 continuously receives the input of the image data in which the vehicle is photographed, the vehicle number data generation device 150 treats the series of image data as image data in which the same vehicle is photographed.
  • the vehicle number data generation device 150 performs optical character recognition on the image having the clearest vehicle number displayed on the license plate of the vehicle among the series of image data. Then, the vehicle number data generation device 150 generates vehicle number data including the information of the vehicle number of the license plate of the vehicle obtained by optical character recognition.
  • the vehicle number data generation device 150 At that time, the vehicle number data generation device 150, image ID, optical character recognition evaluation value, license plate type, vehicle number detection area center position, vehicle detection area center position, vehicle detection evaluation value, vehicle speed (km / h), imaging Time (year / month / day / hour: minute: second), camera ID, first detection time (year / month / day / hour: minute: second), last detection time (year / month / day / hour: minute).
  • Each information of the number of vehicles (units) and the detected position (start point) is included in the vehicle number data.
  • generation apparatus 150 transmits the vehicle
  • vehicle number data reception unit 112 of vehicle number data processing device 110 receives vehicle number data transmitted from vehicle number data generation device 150
  • vehicle number data reception unit 112 corresponds each information included in the vehicle number data to information of data ID. And stored in the vehicle number data storage unit 126 (S205).
  • the vehicle number data receiving unit 112 further associates the information of the reception time of the check data indicated by the latest data finally received from the check data receiving unit 111 as described in step S101 of FIG. It is stored in the vehicle number data storage unit 126. Also, has the vehicle number data reception unit 112 been integrated? The information of "No" is further correlated and stored in the vehicle number data storage unit 126.
  • information as shown in FIGS. 3 to 6 is stored in the vehicle number data storage unit 126 of the vehicle number data processing device 110.
  • FIGS. 9 to 12 show an example of the operation flow of the vehicle number data processing device 110.
  • FIG. In the description of this operation flow, integration processing of vehicle number data will be described in detail. Furthermore, in the explanation of this operation flow, FIGS. 1 to 8 will be referred to together.
  • the reception determination unit 113 of the vehicle number data processing device 110 determines whether the check data receiving unit receives the check data (S301). . More specifically, the vehicle number data processing device 110 checks the reception time of the check data of one vehicle number data (year / month / day / hour from the information stored in the vehicle number data storage unit 126: Read the information of minutes: seconds). Then, the reception / non-existence determination unit 113 determines the time indicated by the information and the reception time of the check data indicated by the latest data finally received from the check data reception unit 111 as described in step S101 of FIG. Compare.
  • the vehicle number data processing device 110 Does not carry out integrated processing of vehicle number data.
  • step S301 the reception time of the check data indicated by the latest data finally received from the check data reception unit 111 is indicated by the information of the one vehicle number data read from the vehicle number data storage unit 126.
  • the reception / non-existence determination unit 113 sends the data ID of the one vehicle number data to the integrated data determination unit 114.
  • the vehicle number data integration unit for the one vehicle number data identified by the data ID It is determined whether the vehicle number data 125 is the integrated vehicle number data (S302). More specifically, the integrated data determination unit 114 selects one of the vehicle numbers identified by the data ID received from the check data reception unit 111 among the information stored in the vehicle number data storage unit 126. Is data integrated? Read (Yes or No) information. When the value indicated by the information is “Yes” (S302: Yes), the integrated data determination unit 114 stands by until the next process.
  • the vehicle number data processing device 110 does not perform integration processing of the one vehicle number data.
  • step S302 when the value indicated by the information of the one vehicle number data read out from the vehicle number data storage unit 126 is "No" (S302: No), the integrated data determination unit 114 The data ID of the vehicle number data is transmitted to the vehicle number position determination unit 115.
  • vehicle number position determination unit 115 of vehicle number data processing device 110 receives the data ID sent from integrated data determination unit 114, vehicle number position determination unit 115 of the vehicle number included in the one vehicle number data identified by the data ID It is determined whether the position in the image is within the imaging range of the adjacent camera 130 (S303). More specifically, the vehicle number position determination unit 115 selects one of the vehicles identified by the data ID received from the integrated data determination unit 114 among the information stored in the vehicle number data storage unit 126. Each information of the vehicle number detection area center position of the number data, the vehicle detection area center position, and the camera ID is read out.
  • the vehicle number position determination unit 115 refers to the information of the camera ID and the information of the center position of the vehicle number detection area, and the position in the image of the vehicle number is within the imaging range of the adjacent camera 130 Determine if For example, in the Cartesian coordinate system in which the vehicle number position determination unit 115 takes the upper left of the image as the base point, the X axis in the horizontal direction of the image and the Y axis in the vertical direction of the image, coordinates of the imaging range of the adjacent camera 130 The area settings are saved. This setting is different for each camera 130 that captures the image.
  • the vehicle number position determination unit 115 refers to the information of the camera ID, and identifies the camera 130 that has captured the image whose optical character has been recognized as the vehicle number.
  • the vehicle number position determination unit 115 refers to the above setting corresponding to the specified camera 130 and the coordinates of the information of the vehicle number detection area center position, and the position of the vehicle number in the image of the vehicle number is It is determined whether or not it is within the imaging range. As a result, when the vehicle number position determination unit 115 determines that the position in the image of the vehicle number is not within the imaging range of the adjacent camera 130 (S303: No), the data ID of the one vehicle number data is , Vehicle number data integration unit 125.
  • the vehicle number data integration unit 125 of the vehicle number data processing device 110 receives the data ID sent from the vehicle number position determination unit 115, the one vehicle number data identified by the data ID is integrated after integration. It is set as vehicle number data (S307). More specifically, the vehicle number data integration unit 125 identifies one of the above information items identified from the information stored in the vehicle number data storage unit 126 by the data ID received from the vehicle number position determination unit 115. Integrated vehicle number data? The value of (Yes or No) information is rewritten from "No" to "Yes".
  • the vehicle number data processing device 110 determines the vehicle number including the information of the vehicle number
  • the data is integrated vehicle number data.
  • step S303 when the vehicle number position determination unit 115 determines that the position in the image of the vehicle number is within the imaging range of the adjacent camera 130 in step S303 (S303: Yes), The data ID is sent to the optical character recognition determination unit 116.
  • the vehicle number position determination unit 115 refers to the information of the camera ID and the information of the vehicle detection area center position, and the position in the image of the vehicle number is within the imaging range of the adjacent camera 130 Determine if
  • the optical character recognition determination unit 116 of the vehicle number data processing device 110 uses the information included in the one vehicle number data identified by the data ID. It is determined whether the indicated vehicle number includes a portion that could not be recognized as an optical character (S304). More specifically, among the information stored in the vehicle number data storage unit 126, the optical character recognition determination unit 116 identifies one of the information items identified by the data ID received from the vehicle number position determination unit 115. Reads the information of the vehicle number of the vehicle number data. Then, the optical character recognition determination unit 116 determines whether the vehicle number indicated by the information includes a portion in which the optical character can not be recognized.
  • the optical character recognition determination unit 116 determines that the vehicle number includes a portion in which the optical character can not be recognized. Do. As a result, when the optical character recognition determination unit 116 determines that the vehicle number does not include the portion in which the optical character can not be recognized (S304: No), the data ID of the one vehicle number data is , It sends to the same vehicle number search unit 117.
  • the same vehicle number search unit 117 of the vehicle number data processing device 110 receives the data ID sent from the optical character recognition determination unit 116, the vehicle number included in the one vehicle number data identified by the data ID
  • the vehicle number data including the same information as the information in (1) is searched (S305). More specifically, the same vehicle number search unit 117 identifies one of the information stored in the vehicle number data storage unit 126 by the data ID received from the optical character recognition determination unit 116. Information of vehicle number of vehicle number data and information of camera ID are read out. Then, the same vehicle number search unit 117 extracts vehicle number data including information on the camera ID of the camera 130 next to the camera 130 identified by the camera ID among the information stored in the vehicle number data storage unit 126.
  • the vehicle number search unit 117 searches the read vehicle number data for one including the same information as the information of the vehicle number included in the one vehicle number data. As a result, when there is vehicle number data including the information of the same vehicle number (S306: Yes), the vehicle number search unit 117 determines the data ID of the vehicle number data and the data ID of the one vehicle number data. And the vehicle number data integration unit 125.
  • the vehicle number data integration unit 125 When receiving the two data IDs sent from the same vehicle number search unit 117, the vehicle number data integration unit 125 integrates the two vehicle number data identified by the respective data IDs (S307). More specifically, vehicle number data integration unit 125 selects two vehicles identified by each data ID received from vehicle number search unit 117 among the information stored in vehicle number data storage unit 126. The information of the optical character recognition evaluation value of the number data is read out. Then, the vehicle number data integration unit 125 compares the magnitudes of the information of the two optical character recognition evaluation values. Then, the vehicle number data integration unit 125 deletes, from the vehicle number data storage unit 126, the information of the optical character recognition evaluation value with the smaller value and the other pieces of information associated with the information.
  • the vehicle number data integration unit 125 is integrated with the integrated information stored in the vehicle number data storage unit 126 in association with the information of the optical character recognition evaluation value of the larger value?
  • the value of (Yes or No) information is rewritten from "No" to "Yes”.
  • the vehicle number data processing device 110 determines that the degree of reliability of the optical character recognition result is These two vehicle number data are integrated by deleting the smaller vehicle number data and leaving the vehicle number data with the higher degree of reliability of the optical character recognition result.
  • step S304 when the optical character recognition determination unit 116 determines that the vehicle number includes the portion in which the optical character can not be recognized (S304: Yes), one of the vehicle number data of the above The data ID is sent to the character complementing unit 118.
  • the character complementing unit 118 of the vehicle number data processing device 110 receives the data ID sent from the optical character recognition determination unit 116, the character complementing unit 118 of the vehicle number data identified by the data is an optical character string of the vehicle number
  • the character of the part which could not be recognized is complemented (S308). More specifically, the character complementing unit 118 determines the vehicle number of the vehicle number data identified by the data ID received from the optical character recognition determination unit 116 from the information stored in the vehicle number data storage unit 126. Read the information of. Then, the character complementing unit 118 complements the characters of the portion of the character string of the vehicle number that could not be recognized as the optical character. For example, the part which could not be recognized as optical character is "?".
  • the character complementing unit 118 complements the most likely character with reference to a database indicating the pattern of the character string of the vehicle number, for example, for the portion where the optical character can not be recognized and is “?” Do. Then, the character complementing unit 118 rewrites the information of the vehicle number stored in the vehicle number data storage unit 126 into the information of the vehicle number obtained by complementing the characters of the portion where the optical character could not be recognized. Then, the character complementing unit 118 sends the data ID of the one vehicle number data to the same time zone searching unit 119.
  • the same vehicle number search unit 117 searches the data ID of the one vehicle number data in the same time zone. Send to section 119.
  • the same time zone search unit 119 of the vehicle number data processing device 110 receives the data ID sent from the character complementing unit 118 or the same vehicle number search unit 117, the above-mentioned one vehicle number identified by the data ID Vehicle number data including information on the first time or information on the last time corresponding to the time zone from the first time to the last time included in the data is searched (S309). More specifically, the same time zone search unit 119 identifies the information stored in the vehicle number data storage unit 126 by the data ID received from the character complement unit 118 or the vehicle number search unit 117.
  • the information of the first detection time (year / month / day / hour: minute: second) of the vehicle number data and the information of the last detection time (year / month / day / hour: minute: second) are read out. Then, from the time indicated by the information of the first detection time (year / month / day / hour: minute: second), the same time zone search unit 119 determines the last detection time (year / month / day / hour: minute: The time zone up to the time indicated by the information in sec) is calculated.
  • the same time zone search unit 119 detects information of the first detection time (year / month / day / hour: minute: second) of the plurality of vehicle number data stored in the vehicle number data storage unit 126, and the last The vehicle number data including the information of the time corresponding to the calculated time zone is searched with reference to the information of the detection time (year / month / day / hour: minute: second).
  • the same time zone search unit 119 determines the data ID of each vehicle number data and the above The data ID of one vehicle number data is sent to the same vehicle number search unit 117.
  • the same vehicle number search unit 117 When the same vehicle number search unit 117 receives the data ID sent from the same time zone search unit 119, it includes the same information as the vehicle number information included in the one vehicle number data identified by the data ID. Vehicle number data is searched (S311). More specifically, the vehicle number search unit 117 identifies vehicle number data identified by each data ID received from the same time zone search unit 119 among the information stored in the vehicle number data storage unit 126. Read out the vehicle number information of. Then, the same vehicle number search unit 117 searches the vehicle number data searched by the same time zone search unit 119 for one including the same information as the information of the vehicle number of the one vehicle number data.
  • the vehicle number search unit 117 determines the data ID of the vehicle number data and the data ID of the one vehicle number data. And the vehicle number data integration unit 125.
  • the vehicle number data integration unit 125 When receiving the two data IDs sent from the same vehicle number search unit 117, the vehicle number data integration unit 125 integrates the two vehicle number data identified by the respective data IDs (S307). More specifically, vehicle number data integration unit 125 selects two vehicles identified by each data ID received from vehicle number search unit 117 among the information stored in vehicle number data storage unit 126. The information of the optical character recognition evaluation value of the number data is read out. Then, the vehicle number data integration unit 125 compares the magnitudes of the information of the two optical character recognition evaluation values. Then, the vehicle number data integration unit 125 deletes, from the vehicle number data storage unit 126, the information of the optical character recognition evaluation value with the smaller value and the other pieces of information associated with the information.
  • the vehicle number data integration unit 125 is integrated with the integrated information stored in the vehicle number data storage unit 126 in association with the information of the optical character recognition evaluation value of the larger value?
  • the value of (Yes or No) information is rewritten from "No" to "Yes”.
  • the vehicle number data processing device 110 complements the character and then the camera of the adjacent camera Two vehicle number data including information on vehicles existing in the same time zone in the imaging region of 130 are integrated.
  • the same vehicle number search unit 117 determines the data ID of each vehicle number data searched by the same time zone search unit 119. And the data ID of the one vehicle number data described above are sent to the same license plate type search unit 120.
  • the license plate type search unit 120 of the vehicle number data processing device 110 receives the data ID sent from the vehicle number search unit 117, the number included in the one vehicle number data identified by the data ID Vehicle number data including the same information as the plate type information is searched (S313). More specifically, the number plate type searching unit 120 is a unit for identifying the vehicle number identified by each data ID received from the vehicle number searching unit 117 among the information stored in the vehicle number data storage unit 126. Read out the data of license plate type. Then, the same license plate type searching unit 120 searches the vehicle number data searched by the same time zone searching unit 119 for one including the same information as the information of the license plate type of the one vehicle number data.
  • the same license plate type search unit 120 determines the data ID of the vehicle number data, The data ID of the one vehicle number data is sent to the vehicle number data integration unit 125.
  • the vehicle number data integration unit 125 When receiving the two data IDs sent from the license plate type search unit 120, the vehicle number data integration unit 125 integrates the two vehicle number data identified by the respective data IDs (S307). More specifically, the vehicle number data integration unit 125 identifies two of the information stored in the vehicle number data storage unit 126, which are identified by the respective data IDs received from the number plate type search unit 120. Reads the information of the vehicle number of the vehicle number data. At this time, when the information of the vehicle number is included only in one of the vehicle number data, the vehicle number data integration unit 125 stores the respective information of the vehicle number data not including the information of the vehicle number in the vehicle number data storage unit 126. Remove from And, the vehicle number data integration unit 125 integrates the vehicle number data including the information of the vehicle number?
  • the vehicle number data integration unit 125 selects the two vehicles among the information stored in the vehicle number data storage unit 126. The information of the vehicle detection evaluation value of the number data is read out. Then, the vehicle number data integration unit 125 compares the magnitudes of the information of the two vehicle detection evaluation values. Then, the vehicle number data integration unit 125 deletes, from the vehicle number data storage unit 126, the information of the vehicle detection evaluation value with the smaller value and the other pieces of information associated with the information. Then, the vehicle number data integration unit 125 is integrated in the vehicle number data storage unit 126 in association with the information of the vehicle detection evaluation value of the larger value? The value of (Yes or No) information is rewritten from "No" to "Yes".
  • the vehicle number data processing device 110 integrates two vehicle number data including the same type of license plate information.
  • the license plate type search unit 120 determines the plurality of vehicle numbers The data ID of the data and the data ID of the one vehicle number data are sent to the vehicle speed evaluation unit 121, the time zone evaluation unit 122, and the detection position evaluation unit 123.
  • the vehicle speed evaluation unit 121 of the vehicle number data processing device 110 receives the data ID sent from the number plate type search unit 120, the vehicle speed indicated by the information included in the one vehicle number data and the same number plate The degree of coincidence with the vehicle speed indicated by the information contained in the plurality of vehicle number data searched by the type search unit 120 is evaluated (S316). More specifically, the vehicle speed evaluation unit 121 detects vehicle number data identified by each data ID received from the number plate type search unit 120 among the information stored in the vehicle number data storage unit 126. Read out the information on the vehicle speed (km / h).
  • the vehicle speed evaluation unit 121 calculates the value of the vehicle speed (km / h) of the one vehicle number data and the vehicle speed (km / h) of the plurality of vehicle number data searched by the license plate type searching unit 120.
  • the degree of agreement with the value of the information in) is evaluated.
  • the vehicle speed evaluation unit 121 sets the overlap amount of the two normal distributions as the degree of agreement of the vehicle speeds when assuming the normal distribution with respect to the measured value of the vehicle speed with the value of the information of the vehicle speed (km / h) as the central value. Rate as.
  • the vehicle speed evaluation unit 121 then evaluates the data ID of the one vehicle number data, the data IDs of the plurality of vehicle number data searched by the license plate type searching unit 120, and the evaluation result of the degree of coincidence of the vehicle speeds. , Vehicle number data integration unit 125.
  • the time zone evaluation unit 122 of the vehicle number data processing device 110 receives the data ID sent from the number plate type search unit 120, the time zone evaluation unit 122 first detects the vehicle indicated by the information included in the one vehicle number data. The time zone from the time to the last detection time, and the time zone from the first detection time of the vehicle to the last detection time indicated by the information included in the plurality of vehicle number data searched by the same license plate type search unit 120 And the degree of coincidence with each other is evaluated (S317). More specifically, the time zone evaluation unit 122 determines vehicle number data identified by each data ID received from the number plate type search unit 120 among the information stored in the vehicle number data storage unit 126.
  • the information on the first detection time (year / month / day / hour: minute: second) and the last detection time (year / month / day / hour: minute: second) is read out. Then, the time zone evaluation unit 122 determines the last detection time (year / month / day / from the time of the information of the first detection time (year / month / day / hour: minute: second) of the one vehicle number data described above.
  • the time zone up to the time of the information on the hour: minute: second) and the first detection time of each vehicle number data searched by the same license plate type search unit 120 (year / month / day / hour: minute: second)
  • the degree of agreement with the time zone from the time of the information in the time to the time of the information in the last detection time (year / month / day / hour: minute: second) is evaluated.
  • the time zone evaluation unit 122 evaluates the degree of matching of the time zone with the data ID of the one vehicle number data, the data ID of the plurality of vehicle number data searched by the license plate type searching unit 120, And the vehicle number data integration unit 125.
  • the detected position evaluation unit 123 of the vehicle number data processing device 110 receives the data ID sent from the number plate type search unit 120, the detected position evaluation unit 123 and the detected position of the vehicle indicated by the information included in the one vehicle number data.
  • the degree of coincidence with the detected position of the vehicle indicated by the information included in each of the plurality of vehicle number data searched by the same license plate type search unit 120 is evaluated (S318). More specifically, the detected position evaluation unit 123 is a camera ID identified by each data ID received from the number plate type search unit 120 among the information stored in the vehicle number data storage unit 126, Reads each piece of information on the number of vehicles (units) and the detected position (target).
  • the detected position evaluation unit 123 refers to these pieces of information and detects the vehicle detected position indicated by the information contained in the one vehicle number data, and the plurality of each detected by the number plate type search unit 120.
  • the degree of coincidence with the detected position of the vehicle indicated by the information contained in the vehicle number data is evaluated. For example, it is assumed that a vehicle indicated by information included in one vehicle number data is one that is imaged by the camera 130a. Then, it is assumed that the camera 130a detects a total of two vehicles including the vehicle in a time zone in which the vehicle is detected. Then, it is assumed that the camera 130a detects the vehicle at the second position from the left among the two vehicles, looking at the traveling direction.
  • the detected position evaluation unit 123 determines that the detected position of the vehicle detected first from the left by the camera 130b matches the detected position of the vehicle indicated by the information included in one vehicle number data. Evaluate as the highest. Then, the detection position evaluation unit 123 evaluates the degree to which the detection position matches the data ID of the one vehicle number data, the data ID of the plurality of vehicle number data searched by the license plate type searching unit 120, And the vehicle number data integration unit 125.
  • the vehicle number data integration unit 125 receives the data ID sent from the vehicle speed evaluation unit 121, the time zone evaluation unit 122, and the detected position evaluation unit 123, and the evaluation result.
  • the vehicle number data with the highest evaluation result by the evaluation unit 121, the time zone evaluation unit 122, and the detection position evaluation unit 123 are integrated (S307). More specifically, the vehicle number data integration unit 125 specifies vehicle number data in which the evaluation result sent from the time zone evaluation unit 122 and the detection position evaluation unit 123 is the highest overall. Then, the vehicle number data integration unit 125 integrates the vehicle number data and the one vehicle number data.
  • the vehicle number data integration unit 125 stores the respective information of the vehicle number data not including the information of the vehicle number in the vehicle number data storage unit 126. Remove from And, the vehicle number data integration unit 125 integrates the vehicle number data including the information of the vehicle number? The value of (Yes or No) information is rewritten from "No" to "Yes". On the other hand, when the information of the vehicle number is not included in either of the two vehicle number data, the vehicle number data integration unit 125 selects the two vehicles among the information stored in the vehicle number data storage unit 126. The information of the vehicle detection evaluation value of the number data is read out.
  • the vehicle number data integration unit 125 compares the magnitudes of the information of the two vehicle detection evaluation values. Then, the vehicle number data integration unit 125 deletes, from the vehicle number data storage unit 126, the information of the vehicle detection evaluation value with the smaller value and the other pieces of information associated with the information. Then, the vehicle number data integration unit 125 is integrated in the vehicle number data storage unit 126 in association with the information of the vehicle detection evaluation value of the larger value? The value of (Yes or No) information is rewritten from "No" to "Yes".
  • the vehicle number data processing device 110 determines the speed of the vehicle that is the target of the information included in the one vehicle number data, The time zone in which the vehicle was detected, and the position at which the vehicle was detected are evaluated to obtain the most probable vehicle number data among a plurality of vehicle number data including information on the same type of license plate, and the above. Integrate with one vehicle number data.
  • step S310 when there is no vehicle number data in step S310 (S310: No), the same time zone search unit 119 sends the data ID of the one vehicle number data to the imaging time determination unit 124.
  • step S314 when there is no vehicle number data in step S314: No), the number plate type searching unit 120 sends the data ID of the one vehicle number data to the imaging time determination unit 124.
  • the imaging time determination unit 124 of the vehicle number data processing device 110 receives the data ID sent from the same time zone search unit 119 or the same number plate type search unit 120, the vehicle number data identified by the data ID is received.
  • Each vehicle number data generation device 150 determines whether the imaging time of the image during optical character recognition is earlier than the time indicated by the information of the last detection time of the included vehicle (S319). More specifically, the imaging time determination unit 124 uses the data ID received from the same time zone search unit 119 or the same license plate type search unit 120 among the information stored in the vehicle number data storage unit 126. The information of the last detection time (year / month / day / hour: minute: second) of the vehicle number data identified by is read out.
  • the imaging time determination unit 124 compares the last detection time of the vehicle indicated by the information with the imaging time of the image in the optical character recognition process indicated by the data finally received from the check data reception unit 111. . As a result, when the imaging time of the image in the optical character recognition process is a time before the last detection time of the vehicle (S319: Yes), the imaging time determination unit 124 stands by until the next process.
  • the vehicle number data processing device 110 does not perform the integration process of the one vehicle number data.
  • step S319 when the imaging time of the image during the optical character recognition process is a time after the last detection time of the vehicle (S310: No), the imaging time determination unit 124 determines the one vehicle The data ID of the number data is sent to the vehicle number data integration unit 125.
  • the vehicle number data integration unit 125 When receiving the data ID sent from the imaging time determination unit 124, the vehicle number data integration unit 125 sets vehicle number data identified by the data ID as the integrated vehicle number data (S307). More specifically, of the information stored in the vehicle number data storage unit 126, the vehicle number data integration unit 125 stores the integrated data stored in association with the data received from the imaging time determination unit 124. ? The value of (Yes or No) information is rewritten from "No" to "Yes".
  • the vehicle number data processing device 110 sets the one vehicle number data as the integrated vehicle number data.
  • the plurality of cameras 130 are provided side by side in the width direction above the road R10 so that the imaging ranges adjacent to each other overlap, and images the road obliquely below with time. Then, the vehicle number data processing device 110 captures vehicle number data including information of a vehicle number obtained by optical character recognition of an image captured by one camera 130, and the camera 130 next to the one camera 130 captures an image Of the vehicle number data including the information of the vehicle number obtained by the optical character recognition of the captured image, leaving one of the vehicle number data and deleting the other vehicle number data, thereby including the information on the same vehicle Integrate vehicle number data.
  • the vehicle number data processing system 100 among the plurality of data indicating the vehicle number of the license plate obtained by optical character recognition of the image captured by each camera 130, indicates the vehicle number of the same vehicle Data can be processed as one data.
  • the vehicle number data processing device 110 selects one of the vehicle number data among the vehicle number data obtained by optical character recognition of the image captured by the camera 130 next to the one camera 130. Vehicle number data including the same information as vehicle number information included in vehicle number data obtained by optical character recognition of a captured image is searched. Then, the vehicle number data processing device 110 integrates vehicle number data obtained by optical character recognition of an image captured by one camera 130 and vehicle number data including information of the same searched vehicle number. Thus, depending on the vehicle number data processing system 100, if there is vehicle number data including information of the same vehicle number, the vehicle number data can be integrated.
  • the vehicle number data processing device 110 does the vehicle number data processing device 110 include a portion in which the optical character can not be recognized in the vehicle number obtained by performing the optical character recognition on the image captured by one camera 130? It is determined whether or not. Then, when the vehicle number does not include the part in which the optical character can not be recognized, the vehicle number data processing device 110 searches for the vehicle number data including the same information as the information of the vehicle number. In this manner, the vehicle number data processing system 100 searches for vehicle number data including information of the same vehicle number by using information of the vehicle number not including the portion in which the optical character can not be recognized. be able to.
  • the vehicle number data processing apparatus 110 detects the character captured by one camera 130 by optical character recognition, and the position in the image of the vehicle number obtained is the camera 130 next to the one camera 130. It is determined whether or not it is within the imaging range of Then, when the position in the image of the vehicle number is within the imaging range of the camera 130 next to the one camera 130, the vehicle number data processing device 110 can not recognize the optical character in the vehicle number Is determined.
  • the vehicle number data processing system 100 when the vehicle is imaged in the imaging area overlapping the imaging area of the next camera 130, the vehicle number obtained by optical character recognition of the image The data can be processed as data to be integrated with other vehicle number data.
  • the vehicle number data processing device 110 determines whether the vehicle number data is the integrated vehicle number data or not. Then, if the vehicle number data processing device 110 is not the integrated vehicle number data, whether the position in the image of the vehicle number included in the vehicle number data is within the imaging range of the next imaging device or not Determine In this manner, the vehicle number data processing system 100 can process only unintegrated vehicle number data as data to be integrated.
  • the vehicle number data generation device 150 is provided corresponding to each camera 130 one by one, and performs optical character recognition on an image captured by the corresponding camera 130 to generate vehicle number data. . Then, the vehicle number data processing device 110 receives the check data from the vehicle number data generation device 150. Further, the vehicle number data processing device 110 receives vehicle number data from the vehicle number data generation device 150. Then, after receiving the vehicle number data, the vehicle number data processing device 110 determines whether or not the check data has been received. Then, when the vehicle number data processing device 110 receives the check data after receiving the vehicle number data, the vehicle number data processing device 110 determines whether the vehicle number data is the vehicle number data after integration.
  • the vehicle number data processing system 100 for example, a difference occurs in the reception time of two vehicle number data relating to the same vehicle due to the time lag involved in the optical character recognition process, the influence of communication delay, etc.
  • the vehicle number data can be prevented from being subjected to integration processing as much as possible.
  • the vehicle number data generation device 150 performs the optical character recognition on the image captured by the corresponding camera 130 to generate the vehicle number data including the information of the vehicle number of the license plate of the vehicle.
  • the vehicle number data is generated which further includes information on the first time when the vehicle was detected by the camera 130 and information on the last time. Then, when the vehicle number includes the portion in which the optical character can not be recognized, the vehicle number data processing device 110 complements the character of the vehicle number in the portion in which the optical character can not be recognized. .
  • Vehicle number data obtained by optical character recognition of an image captured by the camera 130 from vehicle number data obtained by optical character recognition of an image captured by the camera 130 next to the camera 130 The vehicle number data including the information of the first time or the information of the last time corresponding to the time zone from the first time to the last time included in.
  • the vehicle number data processing device 110 calculates, from the vehicle number data including the information of the first time or the information of the last time corresponding to the above-mentioned searched time zone, the information of the vehicle number complemented with characters and Search for vehicle number data containing the same information.
  • the vehicle number data processing system 100 even if there is a vehicle number including a portion where the optical character could not be recognized, the character of the portion where the optical character can not be recognized is complemented. It is possible to perform integration processing of vehicle number data.
  • the vehicle number data generation device 150 performs optical character recognition on the image captured by the corresponding camera 130, and generates vehicle number data including the information of the vehicle number of the license plate of the vehicle. Vehicle number data is generated that further includes information on the type of vehicle license plate. Then, when the vehicle number data processing device 110 can not search for the vehicle number data including the information of the same vehicle number among the searched vehicle number data, an image captured by the camera 130 next to the one camera 130 Among the vehicle number data obtained by optical character recognition, the same information as the type information of the license plate included in the vehicle number data obtained by Search vehicle number data including.
  • the vehicle number data generation device 150 integrates the vehicle number data and the vehicle number data obtained by optical character recognition of an image captured by one camera 130. .
  • the vehicle number data processing system 100 integrates two vehicle number data including the same license plate type information even if it is not possible to search for the vehicle number data having the matched vehicle number information. can do.
  • the vehicle number data generation device 150 obtains an image obtained by one camera 130 by optical character recognition when searching for a plurality of vehicle number data including information of the same type of license plate.
  • the vehicle speed indicated by the information contained in the selected vehicle number data, and the vehicle speed indicated by the information contained in the vehicle number data obtained by optical character recognition of the image captured by the camera 130 next to the one camera 130 Assess the degree of match.
  • the vehicle number data generation device 150 integrates the vehicle number data including the information of the evaluated high vehicle speed with the matching degree. In this manner, the vehicle speed of the vehicle captured by the camera 130 even if the vehicle number data processing system 100 can not search for vehicle number data in which the information of the vehicle number and the information of the type of the license plate match. It is possible to integrate vehicle number data with a high degree of matching information.
  • the vehicle number data processing device 110 obtains an image obtained by one camera 130 by optical character recognition when searching for a plurality of vehicle number data including information of the same type of license plate.
  • the time zone from the first detection time of the vehicle to the last detection time indicated by the information contained in the acquired vehicle number data and the image captured by the camera 130 next to the one camera 130 are obtained by optical character recognition
  • the degree of coincidence between the time zone from the first detection time of the vehicle to the last detection time indicated by the information included in the acquired vehicle number data is evaluated.
  • license_plate number data processing apparatus 110 unifies the vehicle
  • the vehicle number data processing system 100 even if it is not possible to search for vehicle number data in which the information of the vehicle number and the information of the type of the license plate match, the first of the vehicles imaged by the camera 130 It is possible to integrate vehicle number data having a high degree of coincidence between time zones from the time indicated by the information of the detection time of 1 to the time indicated by the information of the last detection time of the vehicle.
  • the vehicle number data generation device 150 performs the optical character recognition on the image captured by the corresponding camera 130 to generate the vehicle number data including the information of the vehicle number of the license plate of the vehicle.
  • the vehicle number data is further generated, which further includes information on the detected position of the vehicle with respect to the detected positions of all the vehicles detected in the time zone in which the vehicle is detected by the camera 130.
  • vehicle number data processing device 110 searches for a plurality of vehicle number data including information of the same type of license plate, vehicle number data obtained by optical character recognition of an image captured by one camera 130 Detection position of the vehicle indicated by the information contained in the image, and a detection position of the vehicle indicated by the information contained in the vehicle number data obtained by optical character recognition of the image captured by the camera 130 next to the one camera 130 Evaluate the degree to which And the vehicle
  • the vehicle number data processing device 110 can not search for vehicle number data including information on detection time of vehicles in the same time zone, or vehicle number data including information on the same type of license plate
  • the vehicle number data generation device 150 detects the vehicle included in the vehicle number data obtained by the optical character recognition of the image captured by the camera 130 of the imaging time of the image during the optical character recognition processing It is determined whether it is a time before time of. Then, when the imaging time is not before the last time, the vehicle number data processing device 110 integrates the vehicle number data obtained by the optical character recognition of the image captured by the one camera 130 after the integration. Car number data.
  • the vehicle number data processing system 100 if the image captured before the last detection time of the vehicle indicated by the information included in the one vehicle number data is in the optical character recognition process, The vehicle number data obtained by optical character recognition of the image can be integrated with the one vehicle number data, and the integration process of the one vehicle number data can be postponed. .
  • FIG. 13 shows an example of a hardware configuration of a computer 800 that constitutes a vehicle number data processing apparatus 110 according to the present embodiment.
  • a computer 800 according to the present embodiment includes a CPU peripheral unit having a central processing unit (CPU) 802, a random access memory (RAM) 803, a graphic controller 804, and a display 805 mutually connected by a host controller 801, and an input / output.
  • CPU central processing unit
  • RAM random access memory
  • FIG. 13 shows an example of a hardware configuration of a computer 800 that constitutes a vehicle number data processing apparatus 110 according to the present embodiment.
  • a computer 800 according to the present embodiment includes a CPU peripheral unit having a central processing unit (CPU) 802, a random access memory (RAM) 803, a graphic controller 804, and a display 805 mutually connected by a host controller 801, and an input / output.
  • RAM random access memory
  • An input / output unit having a communication interface 807, a hard disk drive 808, and a CD-ROM (Compact Disk Read Only Memory) drive 809 mutually connected by the controller 806, and a ROM (Read Only Memory) connected to the input / output controller 806 Legacy I / O with 810, flexible disk drive 811, and I / O chip 812 Provided with a door.
  • a communication interface 807 a hard disk drive 808, and a CD-ROM (Compact Disk Read Only Memory) drive 809 mutually connected by the controller 806, and a ROM (Read Only Memory) connected to the input / output controller 806
  • Legacy I / O with 810, flexible disk drive 811, and I / O chip 812 Provided with a door.
  • the host controller 801 connects the RAM 803, the CPU 802 that accesses the RAM 803 at a high transfer rate, and the graphic controller 804.
  • the CPU 802 operates based on programs stored in the ROM 810 and the RAM 803 to control each part.
  • the graphic controller 804 acquires image data generated by the CPU 802 or the like on a frame buffer provided in the RAM 803 and causes the display 805 to display the image data.
  • the graphic controller 804 may internally include a frame buffer for storing image data generated by the CPU 802 or the like.
  • the input / output controller 806 connects the host controller 801 to the communication interface 807, which is a relatively high-speed input / output device, the hard disk drive 808, and the CD-ROM drive 809.
  • the hard disk drive 808 stores programs and data used by the CPU 802 in the computer 800.
  • the CD-ROM drive 809 reads a program or data from the CD-ROM 892 and provides it to the hard disk drive 808 via the RAM 803.
  • the ROM 810 and the flexible disk drive 811 and relatively low-speed input / output devices of the input / output chip 812 are connected to the input / output controller 806.
  • the ROM 810 stores a boot program executed when the computer 800 starts up, and / or a program depending on the hardware of the computer 800, and the like.
  • the flexible disk drive 811 reads a program or data from the flexible disk 893 and provides the hard disk drive 808 via the RAM 803.
  • the input / output chip 812 connects the flexible disk drive 811 to the input / output controller 806, and also connects various input / output devices to the input / output controller 806 via, for example, a parallel port, serial port, keyboard port, and mouse port. Do.
  • the program provided to the hard disk drive 808 via the RAM 803 is stored in a recording medium such as the flexible disk 893, the CD-ROM 892, or an IC (Integrated Circuit) card, and provided by the user.
  • the program is read from the recording medium, installed in the hard disk drive 808 in the computer 800 via the RAM 803, and executed by the CPU 802.
  • the program installed in the computer 800 and causing the computer 800 to function as the vehicle number data processing device 110 is information of the vehicle number obtained by optical character recognition of an image captured by one camera 130 in the computer 800 in step S307. And vehicle number data including vehicle number information obtained by optical character recognition of an image captured by the camera 130 next to the one camera 130, leaving one of the vehicle number data The other vehicle number data is deleted to function as a vehicle number data integration unit 125 that integrates vehicle number data including information on the same vehicle.
  • one camera 130 captures an image of vehicle number data obtained by optical character recognition of an image captured by the camera 130 next to the one camera 130 in step S306.
  • the same vehicle number search unit 117 for searching for vehicle number data including the same information as the vehicle number information included in the vehicle number data obtained by optical character recognition of the captured image, and the image captured by one camera 130 The vehicle number data obtained by character recognition and the vehicle number data searched by the vehicle number search unit 117 may be functioned as the vehicle number data integration unit 125 integrated in step S307.
  • the vehicle number obtained by performing optical character recognition on the image captured by one camera 130 in the computer 800 in step S304 includes a portion in which the optical character can not be recognized. If the optical character recognition determination unit 116 determines that the optical character recognition determination unit 116 determines that the vehicle number does not include the portion where the optical character recognition could not be performed, the vehicle number is determined in step S305. It may be functioned as the same vehicle number search part 117 which searches vehicle number data including the same information as the above information.
  • the position of the image of the vehicle number obtained by optical character recognition of the image taken by the one camera 130 in the computer 800 in step S303 is the position of the camera 130 next to the one camera 130.
  • the vehicle number position determination unit 115 determines that the vehicle number position determination unit 115 determines whether it is within the imaging range or not and that it is within the imaging range of the camera 130 next to one camera 130 in step S304.
  • the function may be made to function as an optical character recognition determination unit 116 that determines whether the vehicle number includes a portion in which the optical character can not be recognized.
  • the program integrated the computer 800 with the integrated data determination unit 114 that determines whether or not the vehicle number data integration unit 125 integrates the vehicle number data in step S302. If the integrated data determination unit 114 determines that the data is not the subsequent vehicle number data, in step S303, whether or not the position in the image of the vehicle number included in the vehicle number data is within the imaging range of the adjacent camera 130
  • the vehicle number position determination unit 115 may function as the vehicle number position determination unit 115.
  • the program receives the computer 800, the check data receiving unit 111 that receives check data from the vehicle number data generation device 150 in step S101, and the vehicle number data from the vehicle number data generation device 150 in step S204.
  • the check data receiving unit 111 determines whether the check data receiving unit 111 receives the check data in step S301.
  • the vehicle number data receiving unit 112 receives the vehicle number data 113, if the check data receiving unit 111 determines that the check data receiving unit 111 has received the check data, the vehicle number data is received in step S302.
  • Integrated about Whether the vehicle number data may function as the determining integrated data judging unit 114 a.
  • the optical character recognition determination unit 116 determines that the program includes the portion where the vehicle number could not recognize the optical character
  • the program recognizes the optical character in step S308.
  • the optical character recognition determination unit 116 determines that the character complementing unit 118 complements the characters of the vehicle number of the portion that could not be performed and the portion where the optical number can not be recognized is included in the vehicle number
  • the same vehicle number search unit 117 can not search for vehicle number data including information of the same vehicle number, in step S309, an optical character recognition is performed on an image captured by the camera 130 next to one camera 130.
  • the vehicle number data obtained by optical character recognition of the image captured by the one camera 130 Same time zone search unit 119 for searching vehicle number data including first time information or last time information corresponding to a time zone from the first time to the last time Even if the vehicle number data including the same information as the information of the vehicle number for which the character complementing unit 118 has complemented the characters is made to function as the same vehicle number searching unit 117 searched in step 311 among the vehicle number data searched by 119. Good.
  • the program causes the computer 800 to be searched.
  • the image captured by the one camera 130 is obtained by optical character recognition from among the vehicle number data obtained by performing the optical character recognition on the image captured by the camera 130 next to the one camera 130.
  • the license plate type searching unit 120 searches for the same license plate type searching unit 120 that searches for vehicle number data including the same information as the information on the type of license plate included in the acquired vehicle number data, and the same license plate type searching unit 120 searches for one vehicle number data
  • the vehicle number data and the image captured by one camera 130 are recognized as optical characters.
  • the program is obtained by optical character recognition of an image captured by one camera 130 in step S316 when the same plate number type search unit 120 searches the computer 800 for a plurality of vehicle number data.
  • the vehicle speed indicated by the information included in the vehicle number data matches the vehicle speed indicated by the information included in the vehicle number data obtained by optical character recognition of the image captured by the camera 130 next to the one camera 130.
  • the vehicle number evaluation unit 121 that evaluates the degree of exercise and vehicle number data including the information of the vehicle speed with a high degree of coincidence evaluated by the vehicle speed evaluation unit 121 may function as the vehicle number data integration unit 125 integrated in step S307. .
  • the program is obtained by optical character recognition of an image captured by one camera 130 in step S317 when the same plate number type search unit 120 searches the computer 800 for a plurality of vehicle number data.
  • the time zone from the first time to the last time indicated by the information contained in the vehicle number data and the vehicle number data obtained by optical character recognition of the image captured by the camera 130 next to the one camera 130 The time zone evaluation unit 122 which evaluates the degree of coincidence with the time zone from the first time to the last time indicated by the contained information, and the information of time with high coincidence degree evaluated by the time zone evaluation unit 122
  • the vehicle number data may be functioned as the vehicle number data integration unit 125 integrated in step S307.
  • the program is obtained by optical character recognition of an image captured by one camera 130 in step S318 when the same plate number type search unit 120 searches the computer 800 for a plurality of vehicle number data.
  • a detection position indicated by information included in vehicle number data, and a detection position indicated by information included in vehicle number data obtained by optical character recognition of an image captured by the camera 130 next to the one camera 130 As a vehicle number data integration unit 125 that integrates in step S307 the detected position evaluation unit 123 that evaluates the degree of coincidence and the vehicle number data including the information of the detected position with a high degree of coincidence evaluated by the detected position evaluation unit 123 It may be made to function.
  • the program causes the vehicle number data generation device 150 to generate an optical character in step S319 when the computer 800, the same time zone search unit 119, or the same number plate type search unit 120 can not search for the vehicle number data.
  • the imaging time of the image under recognition processing is before the last time when the vehicle included in the vehicle number data obtained by optical character recognition of the image captured by one camera 130 is detected
  • the imaging time determination unit 124 determines whether the imaging time is not earlier than the last time
  • the optical character captured by the image captured by one camera 130 in step S307 is determined.
  • the vehicle number data integration unit 125 may be used as vehicle number data after integration as vehicle number data obtained by recognition.
  • the information processing described in these programs is read by the computer 800, and the vehicle number data receiving unit 112 and the check data receiving unit 111 are specific means in which the software and various hardware resources described above cooperated.
  • the CPU 802 executes the communication program loaded on the RAM 803, and based on the processing content described in the communication program, the communication interface It instructs communication processing to 807.
  • the communication interface 807 reads out transmission data stored in a transmission buffer area or the like provided on a storage device such as the RAM 803, the hard disk drive 808, the flexible disk 893, or the CD-ROM 892 to the network. Alternatively, it writes data received or received from the network into a reception buffer area or the like provided on the storage device.
  • the communication interface 807 may transfer transmission / reception data with the storage device by the direct memory access method, and instead, the CPU 802 reads data from the transfer source storage device or the communication interface 807.
  • the transmission / reception data may be transferred by writing the data to the transfer destination communication interface 807 or storage device.
  • the CPU 802 can also transfer all or necessary portions out of files or databases stored in the external storage device such as the hard disk drive 808, CD-ROM 892, flexible disk 893, etc. to the RAM 803 by direct memory access transfer or the like.
  • the data is read, and various processing is performed on the data on the RAM 803. Then, the CPU 802 writes the processed data back to the external storage device by direct memory access transfer or the like.
  • the RAM 803 can be regarded as temporarily holding the contents of the external storage device, in the present embodiment, the RAM 803 and the external storage device are collectively referred to as a memory, a storage unit, or a storage device. .
  • Various kinds of information such as various kinds of programs, data, tables, databases, and the like in the present embodiment are stored on such a storage device and become an object of information processing.
  • the CPU 802 can hold a part of the RAM 803 in a cache memory, and can read and write on the cache memory. Even in such a mode, since the cache memory bears a part of the function of the RAM 803, in the present embodiment, the cache memory is also included in the RAM 803, the memory, and / or the storage device, unless otherwise indicated. Do.
  • the CPU 802 performs various operations described in this embodiment on data read from the RAM 803, specified by the instruction sequence of the program, including various operations, information processing, condition determination, information search, and replacement. And write back to the RAM 803.
  • the CPU 802 satisfies the condition that the various variables described in the present embodiment are larger, smaller, greater than, less than, equal to, etc. as compared with other variables or constants. It is determined whether the condition is satisfied or not, the process branches to a different instruction sequence, or a subroutine is called.
  • the CPU 802 can also search for information stored in a file in a storage device, a database, or the like. For example, in the case where a plurality of entries in which the attribute value of the second attribute is associated with the attribute value of the first attribute are stored in the storage device, for example, the CPU 802 sets the plurality of entries stored in the storage device. Search for an entry that matches the condition for which the attribute value of the first attribute is specified from among them, and by reading out the attribute value of the second attribute stored in the entry, it is associated with the first attribute that satisfies the predetermined condition An attribute value of the second attribute can be obtained.
  • the programs or modules described above may be stored in an external storage medium.
  • an optical recording medium such as a DVD (Digital Versatile Disk) or a CD (Compact Disk), a magneto-optical recording medium such as an MO (Magneto-Optical disk), a tape A medium, a semiconductor memory such as an IC card, or the like can be used.
  • the program may be provided to the computer 800 via a network using a dedicated communication network or a storage medium such as a hard disk provided in a server system connected to the Internet or a RAM as a recording medium.
  • vehicle number data including information of a vehicle license plate number of a vehicle obtained by optical character recognition of an image.
  • Vehicle Number Data Processing System 110 Vehicle Number Data Processor 111 Check Data Reception Unit 112 Vehicle Number Data Reception Unit 113 Reception Determination Unit 114 Integrated Data Determination Unit 115 Vehicle Number Position Determination Unit 116 Optical Character Recognition Determination Unit 117 Same Vehicle Number Search Unit 118 Character complementation unit 119 Same time zone search unit 120 Same license plate type search unit 121 Vehicle speed evaluation unit 122 Time zone evaluation unit 123 Detection position evaluation unit 124 Imaging time judgment unit 125 Vehicle number data integration unit 126 Vehicle number data storage unit 130 Camera 150 Vehicle Number Data Generator 800 Computer 801 Host Controller 802 CPU 803 RAM 804 graphic controller 805 display 806 input / output controller 807 communication interface 808 hard disk drive 809 CD-ROM drive 810 ROM 811 Flexible disk drive 812 I / O chip 891 Network communication device 892 CD-ROM 893 Flexible disk Aa Imaging range Ab of camera 130a Imaging range Ac of camera 130b Imaging range Ac of camera 130c Imaging range Ad of camera 130d G range R10 Road R11 Lane R12 Lane R13

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PCT/JP2013/054336 2012-03-26 2013-02-21 車両番号データ処理システム、車両番号データ処理方法、車両番号データ処理装置、プログラム、及び記録媒体 WO2013145962A1 (ja)

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JP6086651B2 (ja) 2017-03-01

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