CN103258431A - Automatic number plate recognition system and method for transmitting vehicle information - Google Patents
Automatic number plate recognition system and method for transmitting vehicle information Download PDFInfo
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2869—Operational details of access network equipments
- H04L12/2878—Access multiplexer, e.g. DSLAM
- H04L12/2879—Access multiplexer, e.g. DSLAM characterised by the network type on the uplink side, i.e. towards the service provider network
- H04L12/2881—IP/Ethernet DSLAM
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Abstract
Disclosed are an automatic number plate recognition system and a method for transmitting vehicle information. A device used for catching vehicle number recognition images in gigabit Ethernet network comprises an image processing unit configured to obtain an image of a vehicle entering a detection region, a number plate detection unit configured to extract a number plate image from the image of the vehicle, a number recognition unit configured to recognize a vehicle number from the image information of the number plate image and a transmission selection unit configured to select and output at least one from the image of the vehicle, the number plate image and the vehicle number so as to send vehicle information in the broadband of the gigabit Ethernet network.
Description
The application requires to be submitted on February 20th, 2012 rights and interests of the 10-2012-0016946 korean patent application of Korea S Department of Intellectual Property, and the open of this application all is contained in this by reference.
Technical field
The present invention relates to a kind of automatic number plate recognition system and pass through the method that the Gigabit Ethernet network sends information of vehicles.
Background technology
The automatic number plate recognition system that is used for reading the vehicle registration board of motion, that park and the vehicle that stops is used to detect the vehicle of the vehicle of illegally parking, stolen vehicle, unpaid parking fee and the vehicle of not insuring.
Fig. 9 is the schematic block diagram that traditional automatic number plate recognition system is shown.With reference to Fig. 9, in traditional automatic number plate recognition system, camera 20 obtains vehicle image and this image is sent to number plate recognition device 30.Camera 20 is handled the back or under the situation that the carries out image signal is not handled at the carries out image signal, and original signal (Bayer RGB) form of the vehicle image image taking sensor that catches is sent to number plate recognition device 30.Number plate recognition device 30 receives vehicle image, and from vehicle image identification vehicle registration number, and the number of will registering vehicle sends to Control Server 40.
That is, in traditional automatic number plate recognition system, keep the pixel quantity of the image of seizure to send to number plate recognition device 30 with the image that will catch, number plate recognition device 30 extracts the number plate zones with identification character.Yet according to this method, the increase of pixel quantity causes the increase of transmission bandwidth, because this technical limitation has increased cost.
Summary of the invention
The invention provides a kind of number plate recognition system that can reduce owing to the burden that monitors image resolution ratio that a plurality of vehicles increase and transmission bandwidth simultaneously.
The present invention also is provided for the image capture device of the vehicle number identification in the Gigabit Ethernet network.Described device comprises: graphics processing unit is constructed to obtain enter the image of the vehicle of surveyed area; The number plate detecting unit is constructed to extract the number plate image from vehicle image; The number recognition unit is constructed to the image information identification vehicle number from the number plate image; Send selected cell, be constructed to select and export in vehicle image, number plate image and the vehicle number at least one, in the broadband of Gigabit Ethernet, to send information of vehicles.
Described device also can comprise serial communication unit, be constructed to by serial communication, receive to be used for the control signal of the selection of control vehicle image, number plate image and vehicle number from the external device (ED) that is connected to the Gigabit Ethernet network, and control signal is outputed to the transmission selected cell.Serial communication unit can will output to the Gigabit Ethernet network from the vehicle number of number recognition unit output by serial communication.Can control signal be set according to the Loss Rate of network state or information of vehicles.
Described device also can comprise the gigabit transmission unit, be constructed to pass through Gigabit Ethernet, receive to be used for the control signal of the selection of control vehicle image, number plate image and vehicle number from the external device (ED) that is connected to the Gigabit Ethernet network, and control signal is outputed to the transmission selected cell.The gigabit transmission unit can send vehicle image, number plate image and the vehicle number of optionally exporting according to control signal by Gigabit Ethernet.Can control signal be set according to the Loss Rate of network state or information of vehicles.
The vehicle image of output can be with one of a plurality of two field pictures of the frame per second seizure of determining.
According to a further aspect in the invention, a kind of automatic number plate recognition system in the Gigabit Ethernet network is provided, comprise: camera, the number plate image that is constructed to optionally to send the vehicle image that obtains from vehicle, extracts from vehicle image and from the vehicle number of the image information identification of number plate image at least one are to send the information of vehicles about the vehicle that enters surveyed area in the bandwidth of Gigabit Ethernet; The information of vehicles receiving trap, the selection signal that is constructed to be used for the selection of control vehicle image, number plate image and vehicle number send to camera, and receive vehicle image, number plate image and the vehicle number at least one from camera.
Described information of vehicles receiving trap can be Control Server or user terminal.
Described system also can comprise back-up device, is constructed to back up one of the vehicle image of a plurality of frames that obtain with the frame per second of determining or vehicle image of described a plurality of frames.
Can control signal be set according to the Loss Rate of network state or information of vehicles.
According to a further aspect in the invention, provide a kind of and by camera information of vehicles is sent to the method for Gigabit Ethernet network, described method comprises: the image that obtains to enter the vehicle of surveyed area; Extract the number plate image from vehicle image; Image information identification vehicle number from the number plate image; In selection and output vehicle image, number plate image and the vehicle number at least one is to send information of vehicles in the bandwidth of Gigabit Ethernet.
Described method also can comprise by serial communication vehicle number is sent to the Gigabit Ethernet network.
Described method also can comprise the control signal that receives the selection that is used for control vehicle image, number plate image and vehicle number.Can control signal be set according to the Loss Rate of network state or information of vehicles.
Vehicle image, number plate image and vehicle number can be sent straight to Control Server or the user terminal that is connected to network.
The vehicle image of output can be with one of a plurality of two field pictures of the frame per second seizure of determining.
Described method can comprise that also backup is with one of the vehicle image of a plurality of frames of definite frame per second acquisition or vehicle image of described a plurality of frames.
Description of drawings
By the detailed description that the reference accompanying drawing carries out exemplary embodiment of the present invention, above-mentioned and other characteristics of the present invention and advantage will become clearer, in the accompanying drawings:
Fig. 1 illustrates according to an embodiment of the invention the schematic block diagram of number plate recognition system automatically;
Fig. 2 A and Fig. 2 B illustrate according to an embodiment of the invention the block diagram of the exemplary application of number plate recognition system automatically;
Fig. 3 illustrates the in-built schematic block diagram of ANPR camera according to an embodiment of the invention;
Fig. 4 is the block diagram that the information of vehicles that is obtained by the ANPR camera is shown according to an embodiment of the invention;
Fig. 5 and Fig. 6 illustrate the block diagram of the operation of the transmission selected cell of ANPR camera according to an embodiment of the invention;
Fig. 7 is the diagram that the data stream in the device that is connected to network according to an embodiment of the invention is shown;
Fig. 8 illustrates according to an embodiment of the invention the process flow diagram that the camera of number plate recognition system automatically sends to information of vehicles by the gigabit transmission method of external device (ED);
Fig. 9 is the schematic block diagram that traditional number plate recognition system is shown.
Embodiment
Hereinafter, describe embodiment of the present disclosure with reference to the accompanying drawings in detail.Identical label is represented components identical all the time.For fear of unnecessarily bluring emphasis of the present invention, with the detailed description of omitting known function or configuration.
Term used herein is not in order to limit the present invention but in order to describe present embodiment.Except as otherwise noted, otherwise the term of singulative can comprise plural form." comprise " and the implication of " comprising " indicates character, zone, stationary digital, step, processing, element and/or assembly and do not get rid of other character, zone, stationary digital, step, processing, element and/or assembly.
Unless otherwise defined, otherwise all terms used herein (comprising technical term and scientific terminology) have with example embodiment under the identical implication of the implication of those of ordinary skill common sense of technical field.Also will understand, unless definition clearly here, otherwise term (such as those terms that define in dictionary commonly used) should be interpreted as having the implication consistent with implication in the context in prior art, and will not be interpreted as idealized or too formal implication.
As used herein, term " and/or " comprise any combination and all combinations of one or more relevant items of listing.When such as " ... at least one " be expressed in behind the row element time, it is modified permutation element rather than modifies discrete component in this row element.
Fig. 1 illustrates according to an embodiment of the invention the schematic block diagram of number plate recognition system (ANPR) 1 automatically.Fig. 2 A and Fig. 2 B illustrate according to an embodiment of the invention the block diagram of the exemplary application of number plate recognition system automatically.
With reference to Fig. 1, can comprise ANPR camera 2, Control Server 3, back-up device 4 and user terminal 5 based on the ANPR system 1 of Gigabit Ethernet.
Automatically vehicle registration number in the 1 identification motion of number plate recognition system, vehicle that park or that stop is to detect over-speed vehicles, car accident, illegally to stop or the vehicle of parking, stolen vehicle, the vehicle of unpaid parking fee and the vehicle of not insuring.
ANPR camera 2, Control Server 3, back-up device 4 and user terminal 5 can be based on gigabit Ethernet vision (GigE Vision) accesses network with sending/receiving information.Here, described network is the Gigabit Ethernet network, comprises Local Area Network and internet.
The gigabit Ethernet vision is the standard of machine vision camera interface, and the hardware of gigabit Ethernet vision is based on gigabit Ethernet.Therefore, hereinafter, gigabit Ethernet vision and Gigabit Ethernet can be exchanged and be used.
Under the situation that sends high-definition picture, the transmission solution of the table 1 that illustrates below can using.Basically, in network, the speed of Ethernet is approximately 10 or 100 mbps, and the speed of SD-SDI is approximately 360Mbps.On the contrary, the gigabit Ethernet vision based on Gigabit Ethernet provides the environment that passes through the network transmit image data with the maximal rate of about 1000Mbps or 1Gbps.
HD-SDI, dual link HD-SDI and 3G-SDI have the speed of 1.485Gbps, 2.970Gbps and 2.970Gbps respectively.Yet, because the bandwidth that increases should be used concentric cable at high price.In addition, data transmission is subjected to the influence of the state of the bending of cable or pressurized, therefore, cable difficulty and expensive is installed.
Therefore, use gigabit Ethernet vision transmission solution can reduce the convenience of system cost and raising use.
[table 1]
| Type | Bandwidth |
| Ethernet | 100?Mbps |
| SD-SDI | 360?Mbps |
| The gigabit Ethernet |
1?Gbps |
| HD-SDI | 1.485?Gbps |
| Dual link HD-SDI | 2.970?Gbps |
| 3G-SDI | 2.970?Gbps |
ANPR camera 2 is fixing and is installed in monitor area (such as road or parking lot) to obtain the image capture device about the information of the vehicle that enters monitor area.Information of vehicles can comprise vehicle image, vehicle registration board image and vehicle registration number.A plurality of ANPR cameras 2 are distributed on the ad-hoc location of monitor area and are connected to network.Each ANPR camera 2 has visual angle and the resolution of the image that catches a plurality of vehicles that enter monitor area simultaneously.ANPR camera 2 can be based on gigabit Ethernet vision sending/receiving data.
Under ANPR camera 2 is installed on the road with the situation that monitors the vehicle on the single track, consider vehicle registration board discrimination, the resolution of the needs of vehicle image (pixel quantity) approximately is 2 mega pixels.Under the situation of 2 megapixel image, as shown in table 2 below, because the data broadband approximately is 960Mbps, so can send image based on the Ethernet vision.
Yet, monitor that at ANPR camera 2 resolution of the needs of vehicle image approximately is 5 mega pixels under the situation in two tracks.Under the situation of 5 megapixel image, because data bandwidth approximately is 1200Mbps or 2400Mbps, so can not send image based on the gigabit Ethernet vision.That is, along with the increase of the quantity in the track that monitors, the image resolution ratio that needs and the burden of data transfer bandwidth also increase.
[table 2]
Therefore, according to embodiments of the invention, ANPR camera 2 will not send to the outside with the vehicle image of determining all frames that frame per second obtains by network, but ANPR camera 2 detects vehicle boarding card image, and obtain registration number to send vehicle registration board image and/or registration number from vehicle image, or optionally send vehicle image, in vehicle registration board image and the registration number at least one, thereby pass through the Gigabit Ethernet network based on the gigabit Ethernet vision, owing to monitor image resolution ratio that a plurality of vehicles increase and the burden of transmission bandwidth simultaneously, send information of vehicles by reducing.Here, ANPR camera 2 vehicle image that can not send all frames by the vehicle image that sends one or more frames reduces transmission bandwidth.
The image of ANPR camera 2 continuous capturing surveyed areas detects vehicle boarding card image to obtain the image by the vehicle of surveyed area from vehicle image, and identifies the vehicle registration number based on the image information of vehicle registration board image.Can optionally vehicle image, vehicle registration board image and vehicle registration number be sent to Control Server 3 and user terminal 5 as information of vehicles according to outer setting.
Fig. 2 A and 2B are respectively that to illustrate ANPR camera 2 fixing and be installed in the road 10 with n track enters the surveyed area 13 in track with seizure simultaneously vertical view and the side view of image of a plurality of vehicles.The image that ANPR camera 2 is fixed on bar 11 and continuous capturing surveyed area 13 is to detect the vehicle by road 10 and to obtain vehicle image, vehicle registration board image and vehicle registration number.Although Fig. 2 A illustrates two tracks, the invention is not restricted to this, therefore can be applicable to have the road more than two tracks.
The available bandwidth of Control Server 3 continuous coverage current networks.Control Server 3 can select best effectively information of vehicles (vehicle image, vehicle registration board image, vehicle registration number) control signal is sent to ANPR2 camera 2 based on the result of available bandwidth measurement according to outer setting.Perhaps, do not having under the situation of outer setting, Control Server 3 self can be selected best effectively information of vehicles based on the result of available bandwidth measurement, control signal being sent to ANPR camera 2.In addition, even be set to send at ANPR camera 2 under the situation of the vehicle image with maximum size, Control Server 3 also can effectively be managed the selection of the information of vehicles that will be sent out, and is safe up to the surplus of available bandwidth.
At the environment that arranges that is used for sending vehicle image, Control Server 3 can calculate the Loss Rate of the information of vehicles that receives at special time period, if and according to result calculated, Loss Rate is greater than reference value, then Control Server 3 can send to control signal ANPR camera 2, thereby sends in vehicle registration board image and the vehicle registration number at least one.Control Server 3 can ask ANPR camera 2 to send vehicle images at special time period after the past again.
Back-up device 4 recording and reproducing images are with storage and manage a large amount of long-term/high-resolution datas.Back-up device 4 receives vehicle image and backs up vehicle image from ANPR camera 2.Back-up device 4 backup vehicle images are for preparing as evidence material or preparing for the fault of network failure or Control Server 3.Back-up device 4 can comprise digital video recorder (DVR) and network video machine (NVR).
Fig. 3 illustrates the in-built schematic block diagram of ANPR camera 2 according to an embodiment of the invention.Fig. 4 is the diagram that the information of vehicles that is obtained by ANPR camera 2 is shown according to an embodiment of the invention.Fig. 5 and Fig. 6 illustrate the diagram of the operation of the transmission selected cell 26 of ANPR camera 2 according to an embodiment of the invention.
With reference to Fig. 3, ANPR camera 2 can comprise imageing sensor 21, graphics processing unit 22, number plate detecting unit 23, number recognition unit 24, serial communication unit 25, send selected cell 26 and gigabit communication unit 27.
Imageing sensor 21 comprises image capture device, such as charge-coupled device (CCD) or complementary metal oxide semiconductor (CMOS) (COMS) device.Imageing sensor 21 catches the image of the vehicle that enters surveyed area.
The picture signal from imageing sensor 21 is handled and proofreaied and correct to graphics processing unit 22, to obtain the vehicle image shown in Fig. 4 (a).Method for correcting image specifically is not subject to embodiments of the invention, can use various traditional methods, such as improving the method for interpolation of resolution by neighborhood pixels relatively and by merging the super-resolution method that several low-resolution images improve resolution.
Graphics processing unit 22 obtains several according to frame per second or tens two field pictures.Graphics processing unit 22 can be stored in the two field picture of a plurality of acquisitions in the back-up device 4.1. graphics processing unit 22 can output to transmission selected cell 26 as vehicle image with one in a plurality of two field pictures.Here, 1. vehicle image can be the single two field picture that the indication vehicle enters the time point that the external trigger of surveyed area is transfused to.
Number plate detecting unit 23 extracts the number plate zone from a plurality of two field pictures, with the number plate image of acquisition shown in Fig. 4 (b) 2..Algorithm for detection of the number plate zone is not specifically limited, and therefore can use various known technology.For example, can use the two field picture to input to use vertical filter to use the algorithm of the projection of X-axis and Y-axis then.2. number plate detecting unit 23 can output to the number plate image and send selected cell 26.
Number recognition unit 24 is analyzed number plate based on the image information of number plate image, and with character and the numeral on the identification number plate, that is, the vehicle registration number 3..3. number recognition unit 24 can output to the vehicle registration number and send selected cell 26 and/or serial communication unit 25.
Graphics processing unit 22, number plate detecting unit 23 and number recognition unit 24 can realize by using dsp processor, FPGA or ASIC, and can be integrated with imageing sensor 21 or can separate with imageing sensor 21.For example, with reference to Fig. 2 A and Fig. 2 B, comprise that the optical unit of imageing sensor 21 can be arranged on the top of bar 11, can be arranged on a side of bar 11 for the treatment of the processor from the picture signal of imageing sensor 21.
Be connected under the situation of LAN at ANPR camera 2 and Control Server 3 or user terminal 5, serial communication unit 25 is connected ANPR camera 2 with Control Server 3 or user terminal 5.3. serial communication unit 25 can output to Control Server 3 or user terminal 5 by serial communication with the vehicle registration number from 24 outputs of number recognition unit continuously under the situation of the setting up procedure that does not add.Serial communication unit 25 can receive for the control signal of selecting from the information of vehicles of Control Server 3 or user terminal 5.
Send selected cell 26 can according to control signal optionally export respectively from the vehicle image of graphics processing unit 22, number plate detecting unit 23 and 24 outputs of number recognition unit 1., the number plate image 2. with the vehicle registration number 3. all or at least one.
As shown in Figure 5, send selected cell 26 and can receive control signal S1 by serial communication from Control Server 3 or user terminal 5 via serial communication unit 25.Control signal S1 is for selecting from the outer setting signal of the information of vehicles of ANPR camera 2 outputs.Send selected cell 26 can receive vehicle image 1., the number plate image 2. with the vehicle registration number 3., and can according to control signal S1 optionally export vehicle image 1., the number plate image 2. with at least one in 3. of vehicle registration number.
As shown in Figure 6, sending selected cell 26 can be via gigabit communication unit 27, and the tcp/ip communication by the gigabit Ethernet vision receives control signal S2 from Control Server 3 or user terminal 5.Control signal S2 is for selecting from the outer setting signal of the information of vehicles of ANPR camera 2 outputs.Send selected cell 26 can receive vehicle image 1., the number plate image 2. with the vehicle registration number 3., and can according to control signal S2 optionally export vehicle image 1., the number plate image 2. with at least one in 3. of vehicle registration number.
Gigabit communication unit 27 according to the agreement of gigabit Ethernet vision will from the vehicle image that sends selected cell 26 inputs 1., 3. 2. the number plate image send to Control Server 3 or user terminal with the vehicle registration number.
According to embodiments of the invention, ANPR camera 2 optionally with the vehicle image of each vehicle 1., 2. the number plate image send to Control Server 3 or user terminal 5 with at least one in 3. of vehicle registration number, thereby, can in the bandwidth range of about 1Gbps of gigabit Ethernet vision, send a plurality of information of vehicles.
Fig. 7 is the diagram that the data stream in the device that is connected to network according to an embodiment of the invention is shown.
With reference to Fig. 7, the TCP/TP communications reception of ANPR camera 2 by serial communication or gigabit Ethernet vision is from control signal S1 or the control signal S2 of Control Server 3 or user terminal 5.ANPR camera 2 can according to control signal S1 or control signal S2 optionally with vehicle image 1., 2. the number plate image output to Control Server 3 with at least one in 3. of vehicle registration number.
1. ANPR camera 2 outputs to back-up device 4 so that 1. vehicle image is backed up with vehicle image.1. 1. ANPR camera 2 can output to the vehicle image of single frame back-up device 4 maybe can output to back-up device 4 with the vehicle image of all frames.
Fig. 8 illustrates according to an embodiment of the invention the process flow diagram that the camera of number plate recognition system automatically sends to information of vehicles by the Gigabit Ethernet network method of external device (ED).
External device (ED) is Control Server 3 or user terminal 5.
With reference to Fig. 8, at operation S81,2 acquisitions of ANPR camera enter the image of the vehicle of surveyed area.
At operation S83, ANPR camera 2 detects the number plate image from vehicle image.
At operation S85, ANPR camera 2 is from the image information identification vehicle registration number of number plate image.
At operation S87, ANPR camera 2 is optionally exported at least one in an image, number plate image and the vehicle registration number.ANPR camera 2 receives control signal from Control Server 3 or user terminal 5, and under the condition that arranges according to control signal, optionally exports at least one in vehicle image, number plate image and the vehicle registration number.Control Server 3 can send to control signal ANPR camera 2, thereby the Loss Rate of consideration network state or information of vehicles is selected in vehicle image, number plate image and the vehicle registration number at least one.
At operation S89, ANPR camera 2 can send to Control Server 3 or user terminal 5 with vehicle image, number plate image and the vehicle registration number of selecting based on the gigabit Ethernet vision.Also can send to Control Server 3 or user terminal 5 by the serial communication number of will registering vehicle.The vehicle image that sends can be with one in a plurality of two field pictures of specific frame per second seizure.ANPR camera 2 can be only send to Control Server 3 or user terminal 5 with number plate image and/or vehicle registration number, and can be according to the outer setting of control signal, only when Control Server 3 or user terminal 5 require vehicle image, and the transmission vehicle image.ANPR camera 2 can be according to the outer setting of control signal, and single frames vehicle image, number plate image and/or the VIN that will catch in response to the outer triggering signal when vehicle enters send to Control Server 3 or user terminal 5.Therefore, can in the bandwidth of gigabit Ethernet vision, send the information of vehicles of one or more vehicles.
Can in back-up device 4, back up all or one in a plurality of two field pictures that catch with specific frame per second.
Do not receiving under the situation of information of vehicles owing to the network service fault, when network normally recovered, Control Server 3 or user terminal 5 can ask ANPR camera 2 to resend information of vehicles.In addition, do not receiving under the situation of information of vehicles owing to the network service fault, Control Server 3 or user terminal 5 can send to ANPR camera 2 with control signal by serial communication, and can receive the vehicle registration numbers from ANPR camera 2 by serial communication.
According to embodiments of the invention, in camera, carry out the algorithm that extracts number plate zone and identification vehicle registration number from the image that catches.Therefore, because number plate image and/or vehicle registration number can be sent to Control Server, rather than send vehicle image, so significantly reduce transmission bandwidth and reduced the cost that is used for guaranteeing transmitting the high price hardware and software of solution.In addition, because do not require additional NID number identifier, the CPU that therefore can reduce in the NID number identifier uses.
According to the present invention, extract number plate area image and/or vehicle registration number from magazine high-definition picture, and number plate area image and/or vehicle registration number are sent to network, thereby reduced because the burden of the bandwidth of transmission high-definition picture.In addition, because do not need the NID number identifier of adding, so can reduce the cost of system.
Although specifically shown with reference to exemplary embodiment of the present invention and described the present invention, but those of ordinary skill in the art will understand, under the situation that does not break away from the spirit and scope of the present invention that are defined by the claims, can carry out various changes on form and the details to it.
Claims (19)
1. image capture device that is used in the vehicle number identification of Gigabit Ethernet network, described device comprises:
Graphics processing unit is constructed to obtain enter the image of the vehicle of surveyed area;
The number plate detecting unit is constructed to extract the number plate image from vehicle image;
The number recognition unit is constructed to the image information identification vehicle number from the number plate image;
Send selected cell, be constructed to select and export in vehicle image, number plate image and the vehicle number at least one in the broadband of Gigabit Ethernet, to send information of vehicles.
2. device as claimed in claim 1, also comprise: serial communication unit, be constructed to by serial communication, receive to be used for the control signal of the selection of control vehicle image, number plate image and vehicle number from the external device (ED) that is connected to the Gigabit Ethernet network, and control signal is outputed to the transmission selected cell.
3. device as claimed in claim 2 wherein, arranges control signal according to the Loss Rate of network state or information of vehicles.
4. device as claimed in claim 2, wherein, serial communication unit will output to the Gigabit Ethernet network from the vehicle number of number recognition unit output by serial communication.
5. device as claimed in claim 1, also comprise: the gigabit transmission unit, be constructed to pass through Gigabit Ethernet, receive to be used for the control signal of the selection of control vehicle image, number plate image and vehicle number from the external device (ED) that is connected to the Gigabit Ethernet network, and control signal is outputed to the transmission selected cell.
6. device as claimed in claim 5 wherein, arranges control signal according to the Loss Rate of network state or information of vehicles.
7. device as claimed in claim 5, wherein, the gigabit transmission unit sends vehicle image, number plate image and the vehicle number of optionally exporting according to control signal by Gigabit Ethernet.
8. device as claimed in claim 1, wherein, the vehicle image of output is one of a plurality of two field pictures that catch with the frame per second of determining.
9. automatic number plate recognition system in the Gigabit Ethernet network comprises:
Camera, the number plate image that is constructed to optionally to send the vehicle image that obtains from vehicle, extracts from vehicle image and from the vehicle number of the image information identification of number plate image at least one are to send the information of vehicles about the vehicle that enters surveyed area in the bandwidth of Gigabit Ethernet;
The information of vehicles receiving trap, the control signal that is constructed to be used for the selection of control vehicle image, number plate image and vehicle number send to camera, and receive vehicle image, number plate image and the vehicle number at least one from camera.
10. automatic number plate recognition system as claimed in claim 9, wherein, the information of vehicles receiving trap is Control Server or user terminal.
11. automatic number plate recognition system as claimed in claim 9, wherein, the information of vehicles receiving trap arranges control signal according to the Loss Rate of network state or information of vehicles.
12. automatic number plate recognition system as claimed in claim 9 also comprises: back-up device is constructed to back up one of the vehicle image of a plurality of frames that obtain with the frame per second of determining or vehicle image of described a plurality of frames.
13. one kind sends to the method for Gigabit Ethernet network by camera with information of vehicles, described method comprises:
Acquisition enters the image of the vehicle of surveyed area;
Extract the number plate image from vehicle image;
Image information identification vehicle number from the number plate image;
In selection and output vehicle image, number plate image and the vehicle number at least one is to send information of vehicles in the bandwidth of Gigabit Ethernet.
14. method as claimed in claim 13 also comprises: by serial communication vehicle number is sent to the Gigabit Ethernet network.
15. method as claimed in claim 13 also comprises: the control signal that receives the selection that is used for control vehicle image, number plate image and vehicle number.
16. method as claimed in claim 15 wherein, arranges control signal according to the Loss Rate of network state or information of vehicles.
17. method as claimed in claim 13, wherein, vehicle image, number plate image and vehicle number are sent straight to Control Server or the user terminal that is connected to network.
18. method as claimed in claim 13, wherein, the vehicle image of output is with one of a plurality of two field pictures of the frame per second seizure of determining.
19. method as claimed in claim 13 comprises that also backup is with one of the vehicle image of a plurality of frames of definite frame per second acquisition or vehicle image of described a plurality of frames.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120016946A KR102015956B1 (en) | 2012-02-20 | 2012-02-20 | Automatic Number Plate Recognition System and Method for transmitting vehicle information in Gigabit ethernet network |
| KR10-2012-0016946 | 2012-02-20 |
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| Publication Number | Publication Date |
|---|---|
| CN103258431A true CN103258431A (en) | 2013-08-21 |
| CN103258431B CN103258431B (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310054215.7A Active CN103258431B (en) | 2012-02-20 | 2013-02-20 | Automatic number plate recognition system and method for transmitting vehicle information |
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| CN106056916A (en) * | 2016-06-23 | 2016-10-26 | 安徽时旭智能科技有限公司 | License plate changing vehicle detection method and system based on intelligent traffic |
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| KR20130095480A (en) | 2013-08-28 |
| CN103258431B (en) | 2017-04-26 |
| KR102015956B1 (en) | 2019-08-29 |
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