CN105096608A - Method, device and system for improving identification accuracy of license plates - Google Patents
Method, device and system for improving identification accuracy of license plates Download PDFInfo
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Abstract
The invention discloses a method, a device and a system for improving the identification accuracy of license plates. The method comprises the steps of acquiring the license plates of all vehicles in a preset region, mapping the license plates of all vehicles in the preset region into a temporary license plate set; acquiring a license plate identification result sent from license plate identification equipment; comparing the license plate identification result with the temporary license plate set; and sending a license plate in the temporary license plate set to the license plate identification equipment, wherein the license plate is most matched with the license plate identification result. According to the technical scheme of the invention, the license plate identification result is compared with the temporary license plate set composed of the license plates of all vehicles in the preset region, so that the license plate identification accuracy is improved. Meanwhile, the vehicle driving-in/out speed is accelerated. The traffic congestion pressure is greatly relieved, and the intelligent degree of the traffic management is improved.
Description
Technical Field
The invention relates to the technical field of license plate recognition, in particular to a method, a device and a system for improving license plate recognition accuracy.
Background
In recent years, with the rapid development of economic society, the number of vehicles has been increasing. In order to improve the management efficiency of vehicles and relieve traffic pressure on roads, the requirement on the license plate recognition rate is higher and higher. In particular, the license plate recognition technology has wide application prospect in the fields of traffic flow detection, traffic control and guidance, district intelligent management, non-stop automatic charging, red light running and other illegal vehicle monitoring, vehicle safety and theft prevention and the like. However, due to the influence of the conditions such as light change of the external environment, dust in the light path, seasonal environment change, pollution and blurring of the license plate, the license plate recognition rate is low, and many new applications depending on license plate recognition cannot be realized.
Disclosure of Invention
The invention aims to provide a method, a device and a system for improving the license plate recognition accuracy, so that the intelligent degree in traffic management is improved.
In order to achieve the above purpose, the present application provides the following technical solutions:
in a first aspect, the present invention provides a method for improving the accuracy of license plate recognition, comprising the following steps:
acquiring license plates of all vehicles in a preset area, and mapping the acquired license plates of all vehicles in the preset area into a temporary license plate set;
acquiring a license plate recognition result sent by license plate recognition equipment;
and comparing the license plate recognition result with a temporary license plate set, and sending the license plate with the highest matching degree with the license plate recognition result in the temporary license plate set to license plate recognition equipment.
In an embodiment of the present invention, before the step of obtaining license plates of all vehicles in a preset area, the method further includes: and judging whether the vehicle enters a preset area or not.
Preferably, the step of determining whether the vehicle enters the preset area includes: and obtaining the position information of the vehicle, and judging whether the vehicle enters a preset area according to the position information of the vehicle.
In this embodiment, if it is determined that the vehicle enters the preset area, license plates of all vehicles in the preset area are obtained, wherein all vehicles in the preset area include the vehicle entering the preset area, and when the vehicle enters the preset area, all other vehicles in the preset area are obtained.
As used herein, "obtaining positional information of a vehicle" includes, but is not limited to, obtaining positional information of a vehicle by conventional position location within the industry. For example, the common positioning methods in the home, community, and office area include GPS-based positioning, WIFI-based positioning, base station-based positioning, bluetooth-based positioning, and the like.
Preferably, the position information of the vehicles is determined by a GPS module, a WIFI module, and/or a bluetooth module of a mobile terminal on each vehicle.
In an embodiment of the present invention, before the step of obtaining license plates of all vehicles in a preset area, the method further includes: and acquiring a communication request or a user authentication request of a vehicle entering a preset area.
In an embodiment of the present invention, the step of acquiring license plates of all vehicles in a preset area, and mapping the acquired license plates of all vehicles in the preset area to a temporary license plate set includes:
obtaining N of entering a preset area at the T-th moment(t)The license plates of the vehicles are obtained in real time, the license plates of all other vehicles in the preset area at the T-th moment are obtained in real time, and N is calculated(t)The license plates of the vehicles and the license plates of all other vehicles in the preset area at the Tth moment are mapped into a Tth temporary license plate set, N is a natural number, and N is a natural number(t)Indicating the number of vehicles entering the preset area at the time T.
In an embodiment of the present invention, the obtaining N of the T-th time entering the preset area(t)The license plate of the vehicle comprises the following steps:
obtaining N entering a preset area from the T-th moment(t)The identity information sent by the mobile terminal or the vehicle-mounted module on the vehicle calls N pre-bound with the identity information according to the identity information(t)The license plate of the vehicle.
In this embodiment, if N is greater than 1, the acquired identity information is identity information of a plurality of vehicles, and a license plate corresponding to each vehicle is called according to the identity information of each vehicle.
In this embodiment, the identity information preferably includes a user authentication request and/or a physical identification address of the mobile terminal or the in-vehicle module.
In an embodiment of the present invention, the obtaining N of the T-th time entering the preset area(t)The license plate of the vehicle comprises the following steps:
obtaining N entering a preset area from the T-th moment(t)N sent by mobile terminal or vehicle-mounted module on vehicle(t)The license plate of the vehicle.
In this embodiment, the Tth time point enters N of the preset area(t)N sent by mobile terminal or vehicle-mounted module on vehicle(t)The license plate of a vehicle is preferably entered into a mobile terminal or onboard module on the vehicle by a user on the vehicle.
In an embodiment of the present invention, the step of obtaining license plates of all other vehicles in the preset area at the T-th time in real time includes:
removing the license plates of the vehicles which drive away from the preset area from the T-1 th temporary license plate set during the period from the T-1 th time to the T-th time to obtain the license plates of all other vehicles in the preset area at the T-th time;
wherein N is(t-1)The vehicle enters a preset area at the T-1 th moment, N(t)The vehicle enters the preset area at the Tth moment.
The scheme provided by the invention maps a temporary license plate set for each vehicle entering the preset area at a certain moment, and when a plurality of vehicles simultaneously enter the preset area at the same moment, the same temporary license plate set can be obtained for the plurality of vehicles.
According to the invention, the 'T-1 th time' and the 'T-th time' respectively represent the time when vehicles which successively enter the preset area; the number of vehicles entering the preset area in sequence can be one or more; for example, 1 vehicle is entered at the first time and 3 vehicles are entered at the second time.
In an embodiment of the present invention, the license plate is a license plate number or license plate information.
In a second aspect, the present invention provides an apparatus for improving the accuracy of license plate recognition, including:
the data acquisition module is used for acquiring license plates of all vehicles in a preset area and acquiring license plate recognition results sent by license plate recognition equipment;
the mapping module is used for mapping the license plates of all vehicles in the preset area acquired by the data acquisition module into a temporary license plate set;
and the data analysis module is used for comparing the license plate recognition result obtained by the data acquisition module and sent by the license plate recognition equipment with the temporary license plate set mapped by the storage module, and sending the license plate with the highest matching degree between the temporary license plate set and the license plate recognition result to the license plate recognition equipment.
In an embodiment of the present invention, the data acquiring module is specifically configured to acquire position information of a vehicle, where the position information of the vehicle is determined by a GPS module, a WIFI module, and/or a bluetooth module of a mobile terminal on each vehicle.
In this embodiment, preferably, the device for improving the accuracy of license plate recognition further includes an area determination module, and the area determination module determines whether the vehicle enters a preset area according to the position information of the vehicle.
In this embodiment, preferably, if the area determination module determines that the vehicle enters the preset area, the data acquisition module acquires license plates of all vehicles in the preset area; the step of acquiring the license plates of all vehicles in the preset area by the data acquisition module comprises the following steps: and acquiring the vehicle entering the preset area, and acquiring the moment when the vehicle enters the preset area, wherein the moment is all other vehicles in the preset area.
In an embodiment of the present invention, the data obtaining module is specifically configured to obtain a communication request or a user authentication request sent by a mobile terminal in a vehicle.
In this embodiment, preferably, the device for improving the accuracy of license plate recognition further includes a user verification module, configured to verify the user authentication request obtained by the data obtaining module, and if the user authentication request passes the verification, the data obtaining module obtains the license plate of the vehicle.
In this embodiment, preferably, the mobile terminal is configured to acquire location information of a vehicle, determine whether the vehicle enters a preset area, and send a communication request or a user authentication request to the data acquisition module of the device if it is determined that the vehicle enters the preset area, where the location information of the vehicle is determined by a GPS module, a WIFI module, and/or a bluetooth module of the mobile terminal on the vehicle.
In an embodiment of the present invention, the data acquiring module is specifically configured to: obtaining N of entering a preset area at the T-th moment(t)The license plates of the vehicles are obtained in real time, and license plates of all other vehicles in the preset area at the T-th moment are obtained in real time;
the mapping module is specifically configured to: will N(t)And mapping the license plates of the vehicles and the license plates of all other vehicles in the preset area at the Tth moment into a Tth temporary license plate set.
Preferably, the N for obtaining the time T entering the preset area(t)The data acquisition module of the license plate of the vehicle is specifically used for: obtaining N entering a preset area from the T-th moment(t)Identity information sent by a mobile terminal or a vehicle-mounted system on a vehicle; and calling N pre-bound with the identity information according to the acquired identity information(t)The license plate of the vehicle.
In this embodiment, if N is greater than 1, the acquired identity information is identity information of a plurality of vehicles, and a license plate corresponding to each vehicle is called according to the identity information of each vehicle.
In this embodiment, the identity information preferably includes a user authentication request and/or a physical identification address of the mobile terminal.
Preferably, the N for obtaining the time T entering the preset area(t)The data acquisition module of the license plate of the vehicle is specifically used for: obtaining N entering a preset area from the T-th moment(t)N sent by mobile terminal or vehicle-mounted module on vehicle(t)The license plate of the vehicle.
In this embodiment, the Tth time point enters N of the preset area(t)N sent by mobile terminal or vehicle-mounted module on vehicle(t)The license plate of a vehicle is preferably entered into a mobile terminal or onboard module on the vehicle by a user on the vehicle.
In an embodiment of the present invention, the data acquiring module is specifically configured to: get the T th timeInto a predetermined area N(t)The license plate of the vehicle is obtained, and the license plate of the vehicle which drives away from the preset area from the T-1 th time to the T-th time is obtained; wherein N is(t-1)The vehicle enters a preset area at the T-1 th moment, N(t)The vehicle enters a preset area at the Tth moment;
the mapping module is specifically configured to: removing the license plates of the vehicles which drive away from the preset area from the T-1 th time to the T-1 th time from the T-1 th temporary license plate set to obtain the license plates of all other vehicles in the preset area at the T-1 th time; then entering the T-th time into N of a preset area(t)And mapping the license plates of the vehicles and the license plates of all other vehicles in the preset area at the Tth moment to be the Tth temporary license plate.
In a third aspect, the invention provides a terminal, which includes the device for improving the accuracy of license plate recognition in the second aspect.
In an embodiment of the present invention, the terminal includes, but is not limited to, a fixed terminal or a mobile terminal that is conventional in the industry, such as a cloud server and a parking lot server.
In a fourth aspect, the present invention provides a license plate recognition apparatus, including:
the license plate recognition module is used for recognizing the license plate to obtain a license plate recognition result;
an information sending module, for sending the license plate recognition result to the device for improving the accuracy of license plate recognition in the second aspect,
and the information receiving module is used for receiving the license plate comparison result sent by the device for improving the license plate identification accuracy in the second aspect.
In an embodiment of the present invention, the license plate recognition device further includes a license plate output module, configured to display a license plate comparison result received by the receiving module, where the license plate comparison result is a license plate with a highest matching degree between the temporary license plate set and the license plate recognition result.
In a fifth aspect, the present invention provides a system for improving the accuracy of license plate recognition, including:
a mobile terminal, the device for improving the license plate recognition accuracy according to the second aspect, and the license plate recognition apparatus according to the fourth aspect;
the mobile terminal is used for sending the identity information or the license plate of the corresponding vehicle to the device for improving the license plate recognition accuracy in the second aspect, wherein the mobile terminal is located on the corresponding vehicle;
the license plate recognition device of the fourth aspect is used for recognizing the license plate of the vehicle and sending the license plate recognition result to the device of the second aspect; the license plate comparison device is also used for receiving the license plate comparison result sent by the device in the second aspect.
In an embodiment of the present invention, the mobile terminal includes, but is not limited to, a mobile phone, a notebook, a tablet computer, and a vehicle-mounted system.
In one embodiment of the invention, the mobile terminal comprises a positioning module and a signal sending module, wherein the positioning module is used for determining the position information of a vehicle where the mobile terminal is located; the signal sending module is used for sending the position information to the data acquisition module of the device for improving the license plate recognition accuracy in the second aspect.
In this embodiment, preferably, the signal sending module of the mobile terminal is further configured to send user identity information to the apparatus according to the second aspect.
In an embodiment of the present invention, the mobile terminal includes a positioning module and an area determination module, where the positioning module is configured to determine location information of a vehicle in which the mobile terminal is located; the area determination module is configured to determine whether a vehicle in which the mobile terminal is located enters a preset area according to the location information, and when the mobile terminal enters the preset area, the mobile terminal is or requests to establish a communication connection with the apparatus according to the second aspect.
In this embodiment, the mobile terminal preferably includes a user authentication module, and the user authentication module is configured to send user identity information to the apparatus according to the second aspect.
In an embodiment of the present invention, the mobile terminal further includes a user interaction module, configured to provide an interface for a user to input a license plate.
In this embodiment, the mobile terminal further comprises a signal sending module for sending the license plate input by the user to the apparatus according to the second aspect.
The mobile terminal and the device for improving the license plate recognition accuracy of the second aspect, the device for improving the license plate recognition accuracy of the second aspect and the license plate recognition equipment of the fourth aspect both perform information transmission through a network communication technology; in one embodiment of the present invention, the network communication protocol may be TCP/IP protocol, HTTP protocol, FTP protocol, etc.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the license plates of all vehicles in the preset area are acquired, the license plates of all vehicles in the preset area are mapped into the temporary license plate set, then the license plate recognition result sent by the license plate recognition equipment is acquired, the license plate recognition result is compared with the temporary license plate set, and the license plate with the highest matching degree with the license plate recognition result in the temporary license plate set is output, so that the accuracy of license plate recognition is improved, the vehicle access speed is increased, the pressure of traffic jam is relieved, and the intelligent degree in traffic management is improved.
Description of the drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a structural diagram of a server provided in embodiment 1 of the present application;
fig. 2 is a structural diagram of a license plate recognition device provided in embodiment 1 of the present application;
fig. 3 is a structural diagram of a system for improving license plate recognition accuracy according to embodiment 1 of the present application;
fig. 4 is a flowchart of a method for improving license plate recognition accuracy according to embodiment 2 of the present application.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
According to the invention, the license plate is license plate information such as license plate image, license plate number or license plate information which can be acquired by conventional license plate acquisition equipment (such as a camera), for example Yue A12345.
As used herein, the term "mobile terminal" or mobile communication terminal refers to a computer device that can be used in mobile, and broadly includes a mobile phone, a notebook, a tablet computer, a POS device, and even a vehicle-mounted computer.
The common vehicle identification system comprises an intelligent barrier gate, a vehicle detector, an electronic display screen, a management computer, a light supplementing device, a monitoring camera and the like. Generally, a vehicle detector and a monitoring camera are arranged at a vehicle entrance or a garage entrance, the vehicle detector senses the entrance and the exit of a vehicle in a ground sensing mode and the like, the monitoring camera identifies a license plate through embedded identification software, and the embedded identification software generally comprises modules of video acquisition, image preprocessing, license plate detection, license plate segmentation, character identification, tracking and comparison, image compression, data transmission and the like. The "license plate recognition device" in the present invention refers to a license plate detection device in a vehicle recognition system in a district, a mall, an office, a company, a parking lot, an amusement park, etc., and in a narrow sense, refers to a license plate detection device including a monitoring camera, and in a broad sense, may include the entire vehicle recognition system.
Example 1
Referring to fig. 1, 2 and 3, the present invention provides a server 20, a license plate recognition device 30, and a system 40 for improving the accuracy of license plate recognition.
Fig. 1 is a structural diagram of a server 20 according to the present invention, which includes a device for improving the accuracy of license plate recognition according to the present invention. The device provided by the invention comprises a data acquisition module 201, a mapping module 202 and a data analysis module 203; the data acquisition module 201 is configured to acquire license plates of all vehicles in a preset area and acquire a license plate recognition result sent by the license plate recognition device 30; the mapping module 202 is configured to map license plates of all vehicles in the preset area acquired by the data acquisition module into a temporary license plate set; the data analysis module 203 is configured to compare the license plate recognition result obtained by the data obtaining module and sent by the license plate recognition device with the temporary license plate set mapped by the mapping module, and send the license plate with the highest matching degree between the temporary license plate set and the license plate recognition result to the license plate recognition device 30.
In an embodiment of the present invention, the apparatus for improving the accuracy of license plate recognition further includes a region determination module, where the region determination module determines whether the vehicle enters a preset region according to the position information of the vehicle acquired by the data acquisition module 201, and if it is determined that the vehicle enters the preset region, the data acquisition module acquires the license plate of the vehicle again and acquires the license plates of other vehicles in the preset region in real time. In this embodiment, the position information of the vehicle is determined by a GPS module, a WIFI module, and/or a bluetooth module of a mobile terminal on each vehicle, and the mobile terminal (such as a signal transmission module) on each vehicle transmits the determined position information to the acquisition module 201.
In another embodiment of the present invention, the apparatus for improving the accuracy of license plate recognition further includes a user verification module, configured to verify the user authentication request obtained by the data obtaining module, and if the user authentication request passes the verification, the data obtaining module obtains the license plate of the vehicle. In this embodiment, the mobile terminal obtains location information of a vehicle, and the mobile terminal (for example, an area determination module of the mobile terminal) determines whether the vehicle enters a preset area, and if it is determined that the vehicle enters the preset area, the mobile terminal (for example, a signal transmission module of the mobile terminal) transmits a communication request or a user authentication request to a data obtaining module of the device, where the location information of the vehicle is determined by a GPS module, a WIFI module, and/or a bluetooth module of the mobile terminal on the vehicle.
The server 20 provided by the present invention includes, but is not limited to, a server 20 conventional in the industry, such as a yard server, preferably a cloud server.
Preferably, the server 20 further includes a user identity verification module 204, configured to perform user identity verification on the user identity information sent in the mobile terminal 10, and establish a communication connection with the mobile terminal 10 when the authentication is successful.
Fig. 2 is a diagram of a license plate recognition device 30 according to the present invention, which includes a license plate recognition module 301, an information sending module 302, an information receiving module 303, and a license plate output module 304; the license plate recognition module 301 (such as a camera) is configured to recognize a license plate to obtain a license plate recognition result; the information sending module 302 is configured to send a license plate recognition result to the apparatus for improving the accuracy of license plate recognition in the second aspect; the information receiving module 303 is configured to receive a license plate comparison result sent by the apparatus for improving the accuracy of license plate identification according to the second aspect; the license plate output module 304 (such as an electronic display screen) is used for displaying the information received by the information receiving module.
Fig. 3 is a system 40 for improving the accuracy of license plate recognition provided by the present invention, which includes a server 20 and a license plate recognition device 30 provided by the present invention, and further includes a mobile terminal 10.
In an embodiment of the present invention, the mobile terminal 10 includes a region determining module 105, configured to determine whether the mobile terminal 10 enters a preset region, and when the mobile terminal 10 enters the preset region, the mobile terminal 10 immediately establishes or requests a communication connection with the server 20; when the mobile terminal 10 leaves the preset area, that is, disconnects or requests to disconnect the communication connection with the server 20, after the mobile terminal 10 disconnects the communication connection with the server 20, the server 20 removes the license plate of the vehicle from the temporary license plate set.
Preferably, in this embodiment, the mobile terminal 10 further includes a user authentication module 104, and the manner for requesting the mobile terminal 10 to establish the communication connection with the server 20 is as follows: the user authentication module 104 sends a user authentication request to the server 20, and when the server 20 passes the authentication, the server 10 establishes a communication connection with the mobile terminal 20.
After the communication connection is established, the data obtaining module 201 of the server 10 calls a license plate pre-bound with the identity information of the user according to the identity information of the user.
Preferably, in this embodiment, the manner in which the user authentication module 104 sends the user identity authentication request to the server 20 is as follows: the user authentication module 104 sends a user name and a password to the server 20 for user identity authentication, or sends a physical identification address of the user mobile terminal for authentication.
In another embodiment of the present invention, the mobile terminal 10 includes a positioning module 101 (such as a GPS positioning module), and the positioning module 101 is configured to determine the position information of the vehicle where the mobile terminal is located and send the position coordinates to the server 20.
In this embodiment, the server 20 determines whether the vehicle enters a preset area according to the acquired position information of the vehicle where the mobile terminal is located, and if it is determined that the vehicle enters the preset area, acquires a license plate pre-bound to the vehicle; and if the vehicle leaves from the preset area, removing the license plate of the vehicle from the temporary license plate set.
In another embodiment of the present invention, the mobile terminal 10 includes a user interaction module 102 and a signal transmission module 103; in this embodiment, the user may manually or voice-input the license plate through the user interaction module 102, and the signal transmission module 103 transmits the license plate manually or voice-input by the user to, for example, the server 20.
Preferably, in this embodiment, the user interaction module 102 of the mobile terminal 10 is further configured to receive the reminding information from the server 20, and feed back the confirmation or abandon instruction of the user to the server 20 through the user interaction interface.
In the embodiment of the present invention, the mobile terminal 10 may be a mobile phone, a tablet computer, or a vehicle-mounted system in any vehicle of the user.
The mobile terminal 10 and the server 20, and the server 20 and the license plate recognition device 30 all perform information transmission through a network communication technology; in one embodiment of the present invention, the network communication protocol may be TCP/IP protocol, HTTP protocol, FTP protocol, etc.
In an application scenario of the invention, a WIFI-based position location is adopted to judge that a user vehicle enters a preset area.
Specifically, after the mobile terminal 10 enters a cell WIFI hotspot area, the identifier and/or hardware address of the WIFI hotspot may be automatically searched, if the identifier and/or hardware address of the WIFI hotspot in the designated area of the cell vehicle entry gateway is pre-collected in advance and stored in the mobile terminal area determination APP or area determination module, and when the WIFI module of the mobile terminal 10 scans the identifier and/or hardware address of the WIFI hotspot, the area determination APP or area determination module determines that the mobile terminal 10 enters the preset area.
Therefore, the mobile terminal 20 does not need WIFI wireless connection, and only needs to scan the identifier and/or hardware address of the WIFI hotspot, that is, the WIFI-based location positioning may implement the present invention.
It can be understood that the position location based on bluetooth and the base station is similar to the position location based on WIFI, and the invention can also be realized.
In an application scenario of the invention, a position location based on a GPS is adopted to judge that a user vehicle enters a preset area.
Specifically, in an implementation scenario of the present invention, the user is a user who has a license plate and user information pre-stored on the server 20. For example, at the time T, the area determination module 105 of the mobile terminal 10 on the vehicle determines that the vehicle of the user enters the preset area, if the user authentication module 104 sends the identity information of the user to the server 20, the server 20 establishes communication connection with the mobile terminal 10 after determining that the user is a pre-stored user through the identity information verification; after the communication connection is established, the data acquisition module 201 calls a license plate pre-bound with the identity information of the user according to the identity information of the user; on the other hand, the server 20 deletes the license plate of the vehicle which is driven away from the preset area from the T-1 st temporary license plate set from the T-1 th temporary license plate set, and the license plate remaining in the T-1 st temporary license plate set and the license plate of the vehicle which is driven into the preset area from the T-1 th time form the T-th temporary license plate set.
Specifically, in another implementation scenario of the present invention, the user is a non-cell user, and the user does not pre-store the identity information and the license plate in the server 20. In this scenario, for example, at the time T, the mobile terminal 10 in communication connection with the server 20 sends location information to the server 20, when the server 20 determines that the user vehicle enters the preset area according to the location information, the user may be prompted to input a license plate through the user interaction module 102 of the mobile terminal 10, the user inputs the license plate on the interface of the user interaction module 102 through a manual input or voice input manner, and the signal sending module 103 sends the input license plate to the server 20.
Example 2
Fig. 4 is a flowchart of a method for improving the accuracy of license plate recognition provided by the present invention, and in combination with fig. 4, the present invention provides a method for improving the accuracy of license plate recognition, which employs the system for improving the accuracy of license plate recognition provided in embodiment 1, and includes the following steps:
the server 20 acquires license plates of all vehicles in a preset area, and maps the acquired license plates of all vehicles in the preset area into a temporary license plate set;
the server 20 acquires a license plate recognition result sent by the license plate recognition device 30;
the server 20 compares the license plate recognition result with the temporary license plate set, and sends the license plate with the highest matching degree with the license plate recognition result in the temporary license plate set to the license plate recognition device 30.
Preferably, the method for improving the accuracy of license plate recognition further comprises: and (5) identity confirmation.
The identity confirmation step comprises the following steps:
the area judgment module 105 of the mobile terminal 10 judges that the mobile terminal 10 enters a preset area and immediately establishes communication connection with the server 20 or requests to establish communication connection with the server 20;
in the step of requesting the mobile terminal 10 to establish a communication connection with the server 20, the server 20 receives the user identity information sent by the user authentication module 104 of the mobile terminal 10, and the user identity verification module 204 of the server 10 performs user identity verification according to the user identity information, and when the verification is successful, establishes a communication connection between the server 20 and the mobile terminal 10.
The identity information may be a user name, user password authentication information, and/or a physical identification address of the mobile terminal or the vehicle-mounted module.
In an embodiment of the present invention, the step of acquiring license plates of all vehicles in a preset area by the server 20, and mapping the acquired license plates of all vehicles in the preset area as a temporary license plate set includes:
the server 20 obtains N entering the preset area at the T moment(t)The license plates of the vehicles are obtained in real time, the license plates of all other vehicles in the preset area at the T-th moment are obtained in real time, and N is calculated(t)And mapping the license plates of the vehicles and the license plates of all other vehicles in the preset area at the Tth moment into a Tth temporary license plate set.
Preferably, in this embodiment, the server 20 obtains N of entering the preset area at the T-th time(t)The license plate of the vehicle comprises the following steps:
the server 20 acquires the identity information sent by the mobile terminal 10 entering the preset area at the Tth moment, and calls N pre-bound with the identity information according to the identity information(t)The license plate of the vehicle.
The identity information may be a user name, user password authentication information, and/or a physical identification address of the mobile terminal or the vehicle-mounted module.
Preferably, in this embodiment, the server 20 obtains N of entering the preset area at the T-th time(t)The license plate of the vehicle comprises the following steps:
the server 20 acquires N transmitted from the mobile terminal 10 entering the preset area at the T-th time(t)The license plate of the vehicle.
Preferably, N is sent by the mobile terminal 10 entering the preset area at the time T(t)The license plate of a vehicle is manually or voice-inputted to the mobile terminal 10 by a user on the vehicle.
Preferably, in this embodiment, the step of obtaining license plates of all other vehicles in the preset area at the T-th time in real time includes:
removing the license plates of the vehicles which drive away from the preset area from the T-1 th temporary license plate set during the period from the T-1 th time to the T-th time to obtain the license plates of all other vehicles in the preset area at the T-th time;
wherein N is(t-1)The vehicle enters a preset area at the T-1 th moment, N(t)The vehicle enters the preset area at the Tth moment.
Taking a cell as an example, in a specific application scenario of the present invention, an area 100 meters outside a gate opening of a gate car in the cell is set as a preset area P. At 8 o' clock, when a vehicle A of a residential quarter enters a preset area P, a mobile terminal 10 (preferably a vehicle-mounted system) judges that the vehicle A enters the preset area, the mobile terminal 10 sends identity information to a server 20, and the server 20 establishes communication connection with the mobile terminal 10 after judging that the vehicle A is a pre-stored user through identity information verification; after establishing the communication connection, the server 20 retrieves a license plate, such as yue a82345, pre-bound to the identity information according to the identity information.
On the other hand, at point 7, when the number of vehicles B in the residential area is 50 minutes, the vehicles B in the residential area enter the preset area P, at this time, there are 5 vehicles in the preset area P in total, and the server 20 maps the license plates of the 5 vehicles into a first temporary license plate set, where the license plates in the first temporary license plate set are respectively yue a52445, yue a25345, yue a55556, yue a77456, and yue a 88856. Then, at points 7, 55 and 58, two vehicles with license plates of guangdong a77456 and guangdong a88856 respectively drive away from the preset area in sequence, and at this time, the server 20 deletes the license plates of the two vehicles from the first temporary license plate set; when 8 o' clock, vehicle A enters the preset area, two vehicles with license plates of Guangdong A77456 and Guangdong A88856 have rolled away from the preset area, at this moment, the first temporary license plate set with two license plates of Guangdong A77456 and Guangdong A88856 deleted is merged with the license plate of vehicle A to form a second temporary license plate set, and the license plates in the second temporary license plate set are Guangdong A82345, Guangdong A52445, Guangdong A25345 and Guangdong A55556 respectively.
Due to objective factors such as light variation and dust in the optical path, the license plate recognition module (e.g., a monitoring camera) of the license plate recognition device 30 recognizes the license plate of the vehicle a as yue AB2345, and sends the result to the server 20. The server 20 compares the license plate recognition result yue AB2345 with the license plates in the temporary license plate set two, at this time, the license plate with the highest matching degree with the license plate recognition result in the temporary license plate set two is yue a82345, the server 20 sends the yue a82345 to the license plate recognition device 30, and the license plate output module 304 (such as an electronic display screen) in the license plate recognition device 30 outputs the yue a 82345.
In another specific application scenario of the invention, a cell has three traffic lanes, and an area 100 meters outside a gate opening of a gate of the cell is set as a preset area P. At 8 o' clock, vehicles a1, a2 and A3 of community residents enter a preset area P from three driving channels simultaneously, mobile terminals 10 (preferably vehicle-mounted systems) on the vehicles a1, a2 and A3 respectively judge that the vehicles a1, a2 and A3 enter the preset area, the mobile terminals 10 on the vehicles a1, a2 and A3 respectively send identity information to the server 20, and the server 20 establishes communication connection with the mobile terminals 10 on the vehicles a1, a2 and A3 respectively after judging that the users are prestored through identity information verification; after the communication connection is established, the server 20 calls the license plate pre-bound with the identity information according to the identity information, for example, the license plate of the vehicle a1 is yue a82341, the license plate of the vehicle a2 is yue a82342, and the license plate of the vehicle A3 is yue a 82343.
On the other hand, at point 7, when the number of vehicles B in the residential area is 50 minutes, the vehicles B in the residential area enter the preset area P, at this time, there are 5 vehicles in the preset area P in total, and the server 20 maps the license plates of the 5 vehicles into a first temporary license plate set, where the license plates in the first temporary license plate set are respectively yue a52445, yue a25345, yue a55556, yue a77456, and yue a 88856. Then, at points 7, 55 and 58, two vehicles with license plates of guangdong a77456 and guangdong a88856 respectively drive away from the preset area in sequence, and at this time, the server 20 deletes the license plates of the two vehicles from the first temporary license plate set; when the vehicle a enters the preset area at 8 o' clock, the two vehicles with license plates of yue a77456 and yue a88856 have already moved away from the preset area, at this time, the first temporary license plate set from which the two license plates of yue a77456 and yue a88856 are deleted is merged with the license plate of the vehicle a to form a second temporary license plate set, and at this time, the license plates in the second temporary license plate set are respectively yue a82341, yue a82342, yue a82343, yue a52445, yue a25345 and yue a 55556.
The license plate recognition module (e.g., a monitoring camera) of the license plate recognition device 30 recognizes the license plate of the vehicle a1 as yue AB2341, and sends the result to the server 20. The server 20 compares the license plate recognition result yue AB2341 with the license plates in the temporary license plate set two, at this time, the license plate with the highest matching degree with the license plate recognition result in the temporary license plate set two is yue a82341, the server 20 sends the yue a82341 to the license plate recognition device 30, and the license plate output module 304 (for example, an electronic display screen) in the license plate recognition device 30 outputs the yue a 82341.
Therefore, the scheme provided by the invention can avoid misreading caused by low sensitivity of the existing license plate recognition equipment, and even if the license plate recognition equipment recognizes Yue A82345 as Yue AB2345 as the general description of the implementation scene, the scheme provided by the invention can still judge the accurate license plate in real time and efficiently.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method for improving the accuracy of license plate recognition, the method comprising:
acquiring license plates of all vehicles in a preset area, and mapping the acquired license plates of all vehicles in the preset area into a temporary license plate set;
acquiring a license plate recognition result sent by license plate recognition equipment;
and comparing the license plate recognition result with a temporary license plate set, and sending the license plate with the highest matching degree with the license plate recognition result in the temporary license plate set to license plate recognition equipment.
2. The method of claim 1, wherein the step of obtaining license plates of all vehicles in a preset area and mapping the obtained license plates of all vehicles in the preset area to a temporary license plate set comprises:
obtaining N of entering a preset area at the T-th moment(t)The license plates of the vehicles are obtained in real time at the T-th moment, the license plates of all other vehicles in the preset area are obtained in real time, and the T-th moment is entered into the N of the preset area(t)The license plates of the vehicles and the license plates of all other vehicles in the preset area at the Tth moment are mapped into a Tth temporary license plate set, wherein N is a natural number, and N is a natural number(t)Indicating the number of vehicles entering the preset area at time T.
3. The method of claim 2, wherein the N obtained into the predetermined area is the number of the license plates(t)The license plate of the vehicle comprises the following steps:
obtaining N entering a preset area from the T-th moment(t)The identity information sent by the mobile terminal or the vehicle-mounted module on the vehicle calls N pre-bound with the identity information according to the identity information(t)A license plate of a vehicle; or
Obtaining N entering a preset area from the T-th moment(t)N sent by mobile terminal or vehicle-mounted module on vehicle(t)The license plate of the vehicle.
4. The method of claim 2, wherein the step of obtaining the license plates of all other vehicles in the preset area at the tth time in real time comprises:
removing the license plates of the vehicles which drive away from the preset area from the T-1 th temporary license plate set during the period from the T-1 th time to the T-th time to obtain the license plates of all other vehicles in the preset area at the T-th time;
wherein N is(t-1)The vehicle enters a preset area at the T-1 th moment, N(t)The vehicle enters a preset area at the Tth moment; the T-1 st temporary license plate set is N for enabling the T-1 th time to enter a preset area(t-1)And mapping the license plate of the vehicle and the license plates of all other vehicles in the preset area at the T-1 moment.
5. An apparatus for improving accuracy of recognizing a license plate, comprising:
the data acquisition module is used for acquiring license plates of all vehicles in a preset area and acquiring license plate recognition results sent by license plate recognition equipment;
the mapping module is used for mapping the license plates of all vehicles in the preset area acquired by the data acquisition module into a temporary license plate set;
and the data analysis module is used for comparing the license plate recognition result obtained by the data acquisition module and sent by the license plate recognition equipment with the temporary license plate set mapped by the storage module, and sending the license plate with the highest matching degree with the license plate recognition result in the temporary license plate set to the license plate recognition equipment.
6. The device for improving the accuracy of license plate recognition of claim 5, wherein the data acquisition module is specifically configured to: obtaining N of entering a preset area at the T-th moment(t)The license plates of the vehicles are obtained in real time, and license plates of all other vehicles in the preset area at the T-th moment are obtained in real time;
the mapping module is specifically configured to: will N(t)And mapping the license plates of the vehicles and the license plates of all other vehicles in the preset area at the Tth moment into a Tth temporary license plate set.
7. The device for improving the accuracy of license plate recognition of claim 5, wherein the data acquisition module is specifically configured to: obtaining N of entering a preset area at the T-th moment(t)The license plate of the vehicle is obtained, and the license plate of the vehicle which drives away from the preset area from the T-1 th time to the T-th time is obtained; wherein N is(t-1)The vehicle enters a preset area at the T-1 th moment, N(t)At the T th vehicleEntering a preset area at any moment;
the mapping module is specifically configured to: removing the license plates of the vehicles which drive away from the preset area from the T-1 th time to the T-1 th time from the T-1 th temporary license plate set to obtain the license plates of all other vehicles in the preset area at the T-1 th time; then said N is(t)And mapping the license plates of the vehicles and the license plates of all other vehicles in the preset area at the Tth moment to be the Tth temporary license plate.
8. A terminal characterized by comprising the device for improving the accuracy of license plate recognition according to any one of claims 5 to 7.
9. The license plate recognition equipment is characterized by comprising a license plate recognition module, an information sending module and an information receiving module, wherein the license plate recognition module is used for recognizing a license plate and obtaining a license plate recognition result; the information sending module is used for sending the license plate recognition result to the device according to any one of claims 5 to 7; the information receiving module is used for receiving the license plate comparison result sent by the device according to any one of claims 5 to 7.
10. A system for improving the accuracy of license plate recognition, comprising a mobile terminal, a license plate recognition device according to claim 9, and an apparatus according to any one of claims 5 to 7; wherein,
the mobile terminal is used for sending the identity information or the license plate of the corresponding vehicle to the device according to any one of claims 5 to 7, wherein the mobile terminal is positioned on the corresponding vehicle;
the license plate recognition device of claim 9, which is used for recognizing a license plate of a vehicle, obtaining a license plate recognition result, and sending the license plate recognition result to the apparatus of any one of claims 5 to 7; the license plate recognition device of claim 9, further configured to receive the license plate comparison result sent by the apparatus of any one of claims 5-7.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106056919A (en) * | 2016-08-09 | 2016-10-26 | 成都联众智科技有限公司 | License-plate automatic identification system |
| CN107393308A (en) * | 2017-08-28 | 2017-11-24 | 广东西奥物联网科技股份有限公司 | A method and device for recognizing license plates and a parking lot management system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839300A (en) * | 2014-03-27 | 2014-06-04 | 张忠义 | Parking lot automatic fee collection system based on vehicle license plate recognition |
| CN103871115A (en) * | 2014-03-24 | 2014-06-18 | 张忠义 | Method for improving accurate rate of recognizing licenses of vehicles waiting to enter parking lot |
| CN103942549A (en) * | 2014-04-15 | 2014-07-23 | 张忠义 | License plate machining method allowing multiple license plate recognition results |
| KR101494514B1 (en) * | 2013-04-17 | 2015-02-23 | (주)파슨텍 | Vehicle search system using vehicle blackbox |
| CN104751525A (en) * | 2015-04-13 | 2015-07-01 | 张忠义 | Parking charging method capable of reducing license plate recognition manual recheck workload |
-
2015
- 2015-09-02 CN CN201510559740.3A patent/CN105096608A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101494514B1 (en) * | 2013-04-17 | 2015-02-23 | (주)파슨텍 | Vehicle search system using vehicle blackbox |
| CN103871115A (en) * | 2014-03-24 | 2014-06-18 | 张忠义 | Method for improving accurate rate of recognizing licenses of vehicles waiting to enter parking lot |
| CN103839300A (en) * | 2014-03-27 | 2014-06-04 | 张忠义 | Parking lot automatic fee collection system based on vehicle license plate recognition |
| CN103942549A (en) * | 2014-04-15 | 2014-07-23 | 张忠义 | License plate machining method allowing multiple license plate recognition results |
| CN104751525A (en) * | 2015-04-13 | 2015-07-01 | 张忠义 | Parking charging method capable of reducing license plate recognition manual recheck workload |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106056919A (en) * | 2016-08-09 | 2016-10-26 | 成都联众智科技有限公司 | License-plate automatic identification system |
| CN107393308A (en) * | 2017-08-28 | 2017-11-24 | 广东西奥物联网科技股份有限公司 | A method and device for recognizing license plates and a parking lot management system |
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