CN110874935B - Method, system and device for recognizing license plate of vehicle - Google Patents
Method, system and device for recognizing license plate of vehicle Download PDFInfo
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- CN110874935B CN110874935B CN201810997645.5A CN201810997645A CN110874935B CN 110874935 B CN110874935 B CN 110874935B CN 201810997645 A CN201810997645 A CN 201810997645A CN 110874935 B CN110874935 B CN 110874935B
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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
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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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Abstract
The application discloses a method, a system and a device for recognizing a license plate of a vehicle. The method comprises the following steps: acquiring an International Mobile Subscriber Identity (IMSI) set and image information of a target vehicle existing in the target vehicle, wherein the target vehicle is a vehicle running on a target road section, and the IMSI is identification information carried by target equipment located in the target vehicle; judging whether the image information of the target vehicle can determine the license plate information of the target vehicle or not, wherein the license plate information comprises the license plate number of the target vehicle; if the license plate information of the target vehicle can be determined, determining the license plate information of the target vehicle based on the image information of the target vehicle; and if the license plate information of the target vehicle cannot be determined, determining the license plate information of the target vehicle based on the IMSI code. The problem that the license plate number of the vehicle cannot be accurately identified in the related technology is solved through the method and the device.
Description
Technical Field
The application relates to the field of vehicle identification, in particular to a method, a system and a device for identifying a license plate of a vehicle.
Background
The license plate recognition technology is a technology capable of detecting vehicles on a monitored road surface and automatically extracting and processing vehicle license plate information (such as Chinese characters, English letters, Arabic numbers, license plate colors and the like). Although the license plate recognition technology is mature, the technology is greatly influenced by various factors such as environment, light, weather and the like, the conditions of license plate fouling, malicious shielding and license plate counterfeiting exist, and in addition, the picture content of the license plate picture in high-speed motion cannot meet the unified standard. Therefore, the vehicle identification by the license plate recognition technology cannot be accurate.
In addition, from an analog camera to a high-definition camera, a problem that the high resolution of an image is contradictory to the recognition speed is also caused. Due to the wide coverage of the picture, the high-definition picture may have a plurality of license plate identifications in the picture at the same time. The requirement on the speed of license plate recognition is very high, the license plate recognition system has overlarge high-definition video stream code flow, the problem of too low processing speed can be caused by overlarge resource occupation requirement of the recognition system in analysis, the vehicle missing phenomenon can be caused, and the vehicle snapshot rate and the license plate recognition accuracy rate are difficult to improve.
Aiming at the technical problem that the license plate number of the vehicle cannot be accurately identified in the prior art, a solution is not obtained at present.
Disclosure of Invention
The application provides a method, a system and a device for recognizing a vehicle license plate, which are used for solving the problem that the license plate number of a vehicle cannot be recognized accurately in the related technology.
According to one aspect of the present application, a method of identifying a license plate of a vehicle is provided. The method comprises the following steps: acquiring an International Mobile Subscriber Identity (IMSI) set and image information of a target vehicle existing in the target vehicle, wherein the target vehicle is a vehicle running on a target road section, and the IMSI is identification information carried by target equipment located in the target vehicle; judging whether the image information of the target vehicle can determine the license plate information of the target vehicle or not, wherein the license plate information comprises the license plate number of the target vehicle; if the license plate information of the target vehicle can be determined, determining the license plate information of the target vehicle based on the image information of the target vehicle; and if the license plate information of the target vehicle cannot be determined, determining the license plate information of the target vehicle based on the IMSI code.
Optionally, after determining the license plate information of the target vehicle, the method further includes: binding and storing the license plate information of the target vehicle and each IMSI code in the IMSI code set; and binding and storing the license plate information of the target vehicle and the image information.
Optionally, the binding and storing the license plate information of the target vehicle and each IMSI number in the IMSI number set includes: sequentially judging whether the license plate information is bound and stored with each IMSI code; if the license plate information and the IMSI code are bound and stored, increasing the number of times of binding the license plate information and the IMSI code by a preset number of unit values; and if the license plate information and the IMSI code are not bound and stored, binding the license plate information of the target vehicle and the IMSI code which is not bound and stored.
Optionally, determining the license plate information of the target vehicle based on the IMSI number includes: determining reference license plate information meeting a first preset condition in the plurality of license plate information bound by the IMSI code; if the reference license plate information exists, determining license plate information of the target vehicle based on the reference license plate information; and if the reference license plate information does not exist, after a first preset time period, re-executing the step of determining the reference license plate information meeting the first preset condition in the plurality of license plate information bound by the IMSI code.
Optionally, determining the license plate information of the target vehicle based on the reference license plate information comprises: acquiring reference image information corresponding to the reference license plate information, wherein the reference image information comprises characteristics of a reference vehicle corresponding to the reference license plate information; judging whether the similarity between the characteristics of the target vehicle and the characteristics of the reference vehicle meets a second preset condition or not according to reference image information and the image information of the target vehicle, wherein the image information of the target vehicle comprises the characteristics of the target vehicle; if the similarity meets a second preset condition, determining that the reference license plate information is the license plate information of the target vehicle; and if the similarity does not meet a second preset condition, after a second preset time period, re-executing the step of determining the reference license plate information meeting the first preset condition in the plurality of license plate information bound by the IMSI code.
Optionally, in the presence of the reference license plate information, the method further includes: acquiring the determined license plate information of the target vehicle; judging whether the reference license plate information is the same as the license plate information determined by the target vehicle; if the reference license plate information is the same as the license plate information determined by the target vehicle, the step of determining the license plate information of the target vehicle based on the reference license plate information is not executed; if the reference license plate information is not the same as the license plate information determined by the target vehicle, continuing to execute the step of determining the license plate information of the target vehicle based on the reference license plate information
According to another aspect of the present application, a system for identifying a license plate of a vehicle is provided. The system comprises: the system comprises a micro base station device and a micro base station device, wherein the micro base station device is used for identifying an International Mobile Subscriber Identity (IMSI) code existing in a target vehicle, the target vehicle is a vehicle running on a target road section, and the IMSI code is identification information carried by target equipment located in the target vehicle; the vehicle image acquisition device is used for acquiring image information of a target vehicle on a target road section; and the processor is connected with the micro base station equipment and the vehicle image acquisition device, and is used for judging whether the image information of the target vehicle can determine the license plate information of the target vehicle, if so, determining the license plate information of the target vehicle based on the image information of the target vehicle, and if not, determining the license plate information of the target vehicle based on the IMSI code, wherein the license plate information comprises the license plate number of the target vehicle.
Optionally, the system further comprises: and the memory is connected with the processor and used for binding and storing the license plate information of the target vehicle and the IMSI code existing in the target vehicle, and binding and storing the license plate information of the target vehicle and the image information of the target vehicle.
Optionally, the processor comprises: an IMSI number receiving unit, connected to the micro base station device, configured to receive an IMSI number set existing in the target vehicle and sent by the micro base station device; the image information receiving unit is connected with the vehicle image acquisition device and used for receiving the image information sent by the vehicle image acquisition device and determining the license plate information of the target vehicle based on the image information; the license plate information determining unit is linked with the IMSI code receiving unit and the image information receiving unit and is used for determining reference license plate information meeting a first preset condition in a plurality of license plate information bound by the IMSI code and determining the license plate information of the target vehicle based on the reference license plate information; and the binding storage unit is connected with the IMSI code receiving unit, the image information receiving unit and the memory and is used for binding and storing the license plate information of the target vehicle and the IMSI code set existing in the target vehicle in the memory and/or binding and storing the license plate information of the target vehicle and the image information in the memory.
According to another aspect of the present application, there is provided an apparatus for recognizing a license plate of a vehicle. The device includes: an obtaining unit, configured to obtain an International Mobile Subscriber Identity (IMSI) set and image information of a target vehicle existing in the target vehicle, where the target vehicle is a vehicle traveling on a target road segment, and the IMSI number is identification information carried by a target device located in the target vehicle; the judging unit is used for judging whether the image information of the target vehicle can determine the license plate information of the target vehicle or not, wherein the license plate information comprises the license plate number of the target vehicle; the first determining unit is used for determining the license plate information of the target vehicle based on the image information of the target vehicle under the condition that the license plate information of the target vehicle can be determined; and a second determining unit, configured to determine the license plate information of the target vehicle based on the IMSI number if the license plate information of the target vehicle cannot be determined.
The method comprises the following steps: acquiring an International Mobile Subscriber Identity (IMSI) set and image information of a target vehicle existing in the target vehicle, wherein the target vehicle is a vehicle running on a target road section, and the IMSI is identification information carried by target equipment located in the target vehicle; judging whether the image information of the target vehicle can determine the license plate information of the target vehicle or not, wherein the license plate information comprises the license plate number of the target vehicle; if the license plate information of the target vehicle can be determined, determining the license plate information of the target vehicle based on the image information of the target vehicle; if the license plate information of the target vehicle cannot be determined, determining the license plate information of the target vehicle based on the IMSI code, and solving the problem that the license plate number of the vehicle cannot be accurately identified in the related technology. According to the method for recognizing the vehicle license plate, the license plate information of the target vehicle is determined based on the IMSI code under the condition that the image information of the target vehicle cannot determine the license plate information of the target vehicle, so that the technical effects that the vehicle license plate number is recognized accurately, and the recognition process is not interfered by external factors are achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 is a flow chart of a method for identifying a license plate of a vehicle according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an alternative method for identifying a license plate of a vehicle according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a system for identifying license plates of a vehicle according to an embodiment of the present application;
fig. 4 is a schematic diagram of an apparatus for recognizing a license plate of a vehicle according to an embodiment of the present application.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, 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 partial embodiments of the present application, but not all 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.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For convenience of description, some terms or expressions referred to in the embodiments of the present application are explained below:
imsi (international Mobile Subscriber identity), international Mobile Subscriber identity, used to uniquely identify a Mobile Subscriber on a global scale. An IMSI uniquely identifies a mobile subscriber and is available worldwide.
According to an embodiment of the application, a method for recognizing a license plate of a vehicle is provided.
Fig. 1 is a flowchart of a method for recognizing a license plate of a vehicle according to an embodiment of the present application. As shown in fig. 1, the method comprises the steps of:
step S102, an International Mobile Subscriber Identity (IMSI) set and image information of a target vehicle existing in the target vehicle are obtained, wherein the target vehicle is a vehicle running on a target road section, and the IMSI is identification information carried by target equipment located in the target vehicle.
And step S104, judging whether the image information of the target vehicle can determine the license plate information of the target vehicle, wherein the license plate information comprises the license plate number of the target vehicle.
And step S106, if the license plate information of the target vehicle can be determined, determining the license plate information of the target vehicle based on the image information of the target vehicle.
Step S108, if the license plate information of the target vehicle cannot be determined, determining the license plate information of the target vehicle based on the IMSI code.
According to the method for recognizing the license plate of the vehicle, an International Mobile Subscriber Identity (IMSI) code set and image information of a target vehicle are obtained, wherein the target vehicle is a vehicle running on a target road section, and the IMSI code is identification information carried by target equipment located in the target vehicle; judging whether the image information of the target vehicle can determine the license plate information of the target vehicle or not, wherein the license plate information comprises the license plate number of the target vehicle; if the license plate information of the target vehicle can be determined, determining the license plate information of the target vehicle based on the image information of the target vehicle; if the license plate information of the target vehicle cannot be determined, the license plate information of the target vehicle is determined based on the IMSI code, and the problem that the license plate number of the vehicle cannot be accurately identified in the related technology is solved.
According to the method for recognizing the vehicle license plate, the license plate information of the target vehicle is determined based on the IMSI code under the condition that the image information of the target vehicle cannot determine the license plate information of the target vehicle, so that the technical effects that the vehicle license plate number is recognized accurately, and the recognition process is not interfered by external factors are achieved.
The specific explanation for the above is as follows: when people go out, they often carry mobile electronic products such as mobile phones, so the mobile electronic product for judging drivers (fixed people) in target vehicles also becomes an auxiliary basis for judging the target vehicles. Based on this, in steps S102 and S108 in this embodiment, the IMSI number in the target vehicle is acquired, and the target vehicle is identified based on the IMSI number. Namely, the relationship between the target vehicle and the mobile electronic product is determined, the association strength between the target vehicle and the plurality of mobile electronic products bound with the target vehicle is gradually determined, the target vehicle corresponding to the IMSI code is determined based on the association strength, the target vehicle is further identified, the vehicle license plate number is accurately identified, and the technical effect that the identification process is not interfered by external factors is achieved.
Furthermore, besides the IMSI number, any identification information that can identify the stationary person to some extent may replace the IMSI number, for example: an intelligent chip implanted in a human body, an MAC address and the like.
First, the following description is made of the acquisition of the IMSI number set existing in the target vehicle in step S102:
the current IMSI code checking method comprises two methods, one method is road section detection, namely, the IMSI code appearing in a certain road section within a certain time is detected; the second is accurate detection, that is, the IMSI number of a specific location (e.g., in a vehicle) is detected.
For the first type of road segment detection, in step S102, if the IMSI number existing in the target vehicle is obtained, the method includes: the IMSI number carried by all driving vehicles on the target road segment cannot be determined, and the IMSI number is specifically carried by which target vehicle. Therefore, if the license plate information of the target vehicle is determined based on the IMSI number in step S108, the target vehicle needs to be bound with all IMSI numbers acquired on the target road segment one by one, and as the binding data gradually increases, the association strength between the IMSI number and the plurality of vehicles bound with the IMSI number can be determined by the number of times of binding the IMSI number and the plurality of vehicles bound with the IMSI number, and the target vehicle can be determined based on the IMSI number.
An example is illustrated: when the IMSI code a carried by the vehicle a and the vehicle a travels on the γ road segment, and the IMSI code B carried by the vehicle B and the vehicle B also travels on the γ road segment, the vehicle a establishes a binding relationship with the IMSI code a and the IMSI code B. However, when the IMSI number carried by the vehicle a is detected next time, the possibility that the vehicle a and the IMSI number b appear simultaneously is extremely low, and therefore, as the number of times of identifying the license plate of the vehicle a is greater, the strength of association between the IMSI number of the real identifier of the vehicle a and the vehicle a is greater, and it is easier to identify the corresponding vehicle based on the IMSI number.
For the second accurate detection, only the IMSI number existing in the target vehicle needs to be accurately detected, and then the target vehicle is identified according to the IMSI number.
For the above binding step, in the method for recognizing a license plate of a vehicle in this embodiment, after determining license plate information of a target vehicle, the method further includes: and binding and storing the license plate information of the target vehicle and each IMSI code in the IMSI code set, namely binding the target vehicle and all the IMSI codes acquired on the target road section one by one. At this time, the target vehicle can be bound with the IMSI code which is not carried by the target vehicle, but when the vehicle license plate information is identified next time, the probability that the target vehicle is accidentally subjected to the IMSI code which is not carried by the target vehicle is extremely low, so that the influence of binding the target vehicle with the IMSI code which is not carried by the target vehicle can be ignored.
It should be noted that: based on the characteristics of road section detection, the IMSI number of a certain road section appearing in a certain time can only be detected, so that the license plate information of the target vehicle is bound and stored with each IMSI number in the IMSI number set, that is, the IMSI number of the target road section appearing in a time range of T time periods before and after the time base point is collected by taking a certain point of the target vehicle running on the target road section as the time base point, and the IMSI number is bound with the target vehicle. Wherein the T duration is related to the length of the target road segment and the vehicle speed of the target vehicle.
In order to ensure the simplicity of the binding data, the target vehicle (the license plate information of the target vehicle) is determined based on the IMSI number in the subsequent steps, and the specific method for binding and storing the license plate information of the target vehicle and each IMSI number in the IMSI number set may be as follows: sequentially judging whether the license plate information is bound and stored with each IMSI code; if the license plate information and the IMSI code are bound and stored, increasing the number of times of binding the license plate information and the IMSI code by a preset number of unit values; and if the license plate information and the IMSI code are not bound and stored, binding and storing the license plate information of the target vehicle and the IMSI code which is not bound and stored.
At the moment, the binding relationship between the license plate information and the IMSI code is not repeated, the condition that the binding data is excessively redundant can not occur, and the simplicity of the binding data is ensured. And in the subsequent steps, the judgment speed of the license plate information determined based on the IMSI code is correspondingly improved, and the user experience is improved.
For the step of identifying the license plate information of the target vehicle based on the IMSI number, in the method of identifying a vehicle license plate in this embodiment, determining the license plate information of the target vehicle based on the IMSI number may further specifically be: determining reference license plate information meeting a first preset condition in a plurality of license plate information bound by the IMSI code; if the reference license plate information exists, determining license plate information of the target vehicle based on the reference license plate information; and if the reference license plate information does not exist, after a first preset time period, re-executing the step of determining the reference license plate information meeting the first preset condition in the plurality of license plate information bound by the IMSI code.
In summary, determining the license plate information of the target vehicle based on the IMSI number in one example is to determine whether the IMSI number has corresponding license plate information whose association strength satisfies a certain condition, if so, further determine the license plate information of the target vehicle based on the license plate information whose association strength satisfies a certain condition, if not, continue to wait for the presence of corresponding license plate information whose association strength satisfies a certain condition on the IMSI number, and further determine the license plate information of the target vehicle based on the license plate information after the presence of corresponding license plate information whose association strength satisfies a certain condition.
In an optional example, if the plurality of license plate information bound by the IMSI number does not have reference license plate information, that is, the IMSI number does not have corresponding license plate information whose association strength satisfies a certain condition, the IMSI number and the unrecognized target vehicle are bound and stored in a database of the "unrecognized vehicle", and it is periodically determined whether the reference license plate information satisfying a first preset condition appears in the plurality of license plate information bound by the IMSI number.
In an optional example, the reference license plate information that meets the first preset condition in the plurality of license plate information bound by the IMSI number may be: and determining the binding times between the plurality of license plate information bound by the IMSI code and the IMSI code, and when the binding times are more than the preset binding times, considering that the license plate information with the binding times more than the preset binding times is the reference license plate information of the IMSI code. It should be noted that: the higher the preset binding times, the greater the strength of association between the IMSI number and the license plate information, and the higher the accuracy of the method for identifying the license plate of the vehicle provided by the embodiment.
In another optional example, the reference license plate information that satisfies the first preset condition in the plurality of license plate information bound by the IMSI number may be: and determining the binding times between the plurality of license plate information bound by the IMSI code and the IMSI code, and determining the license plate information with the highest binding times as reference license plate information, wherein the binding times are at least more than or equal to 2.
Since there may be a plurality of reference license plate information satisfying the first preset condition, determining the license plate information of the target vehicle based on the reference license plate information may be: acquiring reference image information corresponding to the reference license plate information, wherein the reference image information comprises the characteristics of a reference vehicle corresponding to the reference license plate information; judging whether the similarity of the characteristics of the target vehicle and the characteristics of the reference vehicle meets a second preset condition or not according to the reference image information and the image information of the target vehicle, wherein the image information of the target vehicle comprises the characteristics of the target vehicle; if the similarity meets a second preset condition, determining that the reference license plate information is the license plate information of the target vehicle; and if the similarity does not meet the second preset condition, after a second preset time period, re-executing the step of determining the reference license plate information meeting the first preset condition in the plurality of license plate information bound by the IMSI code.
That is, when the reference license plate information corresponding to the IMSI number existing on the target road segment is acquired, the image information of the target vehicle for which the license plate information is not recognized is acquired, and the reference image information of the reference vehicle corresponding to the reference license plate information is acquired. Based on this, the characteristics of the target vehicle are determined from the image information of the target vehicle, and the characteristics of the reference vehicle are also determined from the reference image information of the reference vehicle. When the characteristics are compared, if the characteristics of the target vehicle and the reference vehicle are found to be similar, the license plate letter of the reference vehicle is considered as the license plate information of the target vehicle, if the characteristics of the target vehicle and the reference vehicle are found to be greatly different, the reference vehicle is considered to be unrelated to the target vehicle, and the characteristic similarity of the next reference vehicle and the target vehicle is further judged until the judgment is finished. In addition, after the reference license plate information is determined, whether the reference vehicle corresponding to the reference license plate information is the same as the target vehicle or not is further judged, and the accuracy of recognizing the license plate of the vehicle is improved.
It should be noted that: in the above example of further determining whether the reference vehicle corresponding to the reference license plate information is the same as the target vehicle, the method for improving the license plate recognition of the vehicle further includes: and binding and storing the license plate information and the image information of the target vehicle. The image information includes characteristics of the target vehicle, specifically, vehicle model information, vehicle color information, vehicle exterior identification, and the like.
In order to further narrow the range of the reference license plate information, in another optional example, the method for recognizing the license plate of the vehicle further includes, in the presence of the reference license plate information: acquiring the license plate information of a target vehicle; judging whether the reference license plate information is the same as the license plate information determined by the target vehicle; if the reference license plate information is the same as the license plate information already determined by the target vehicle, the step of determining the license plate information of the target vehicle based on the reference license plate information is not executed; and if the reference license plate information is not the same as the license plate information determined by the target vehicle, continuing to execute the step of determining the license plate information of the target vehicle based on the reference license plate information.
Based on the above, the IMSI number bound by the target vehicle for which the license plate information is not recognized is all the IMSI numbers detected on the target road segment, while the IMSI number carried by the target vehicle whose license plate information has been identified may exist in the IMSI number bound by the target vehicle whose license plate information has not been identified, in order to exclude the IMSI number carried by the target vehicle for which the license plate information has been identified among the IMSI numbers bound to the target vehicle for which the license plate information has not been identified, it is thus determined whether the reference license plate information is identical to the license plate information that has been determined by the target vehicle, in the case where the reference license plate information is identical to the license plate information already determined by the target vehicle, the license plate information of the target vehicle is no longer determined based on the reference license plate information, and under the condition that the reference license plate information is different from the license plate information determined by the target vehicle, continuously determining the license plate information of the target vehicle based on the reference license plate information.
It should be noted that: under the condition that the reference license plate information is the same as the license plate information determined by the target vehicle, the license plate information of the target vehicle is not determined based on the reference license plate information, and the method specifically comprises the following steps: and determining the license plate information of the target vehicle based on the reference license plate information, and further judging whether other reference license plate information is the same as the license plate information determined by the target vehicle or not until all reference license plate information is judged.
Finally, in order to ensure that the binding relationship between the license plate information and the IMSI number in the method for identifying the license plate of the vehicle is accurate, in an optional example, reference license plate information meeting a first preset condition in a plurality of license plate information bound by any IMSI number is acquired based on a preset time period; judging whether the reference license plate information is identified when the IMSI code is acquired; if not, acquiring the image information of the target vehicle running on the target road section when the IMSI code is acquired, acquiring the image information corresponding to the reference license plate information, and determining whether the reference vehicle corresponding to the reference license plate information exists in the target vehicle running on the target road section.
The invention will now be described with reference to another embodiment.
As shown in fig. 2, the method for recognizing the license plate of the vehicle in this embodiment includes: collecting and storing IMSI codes of mobile phones in vehicles running on a road; capturing the passing vehicles to obtain image information and storing the image information; and identifying the license plate based on the shot image.
And if the license plate can be identified, binding the identified license plate result with the IMSI code.
If the license plate cannot be identified, calling image information of a suspected vehicle according to the IMSI code, comparing the unidentified vehicle with the suspected vehicle, if the characteristics are the same, taking the license plate number of the suspected vehicle as the license plate number of the unidentified vehicle, and if the characteristics are different or the suspected vehicle is similar, storing the unidentified vehicle and the IMSI code in an unidentified license plate database; and calling image information of the suspected vehicle according to the IMSI code regularly.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
The embodiment of the present application further provides a system for recognizing a vehicle license plate, and it should be noted that the system for recognizing a vehicle license plate of the embodiment of the present application may be used to execute the method for recognizing a vehicle license plate provided by the embodiment of the present application. The following describes a system for recognizing a license plate of a vehicle according to an embodiment of the present disclosure.
FIG. 3 is a schematic diagram of a system for identifying a license plate of a vehicle according to an embodiment of the application. As shown in fig. 3, the system includes: a micro base station device 31, a vehicle image acquisition device 32, and a processor 33.
The micro base station equipment is used for identifying an International Mobile Subscriber Identity (IMSI) code existing in a target vehicle, wherein the target vehicle is a vehicle running on a target road section, and the IMSI code is identification information carried by target equipment located in the target vehicle.
And the vehicle image acquisition device 32 is used for acquiring the image information of the target vehicle on the target road section.
And the processor 33 is connected to the micro base station device 31 and the vehicle image acquiring device 32, and determines whether the image information of the target vehicle can determine the license plate information of the target vehicle, if so, determines the license plate information of the target vehicle based on the image information of the target vehicle, and if not, determines the license plate information of the target vehicle based on the IMSI number, wherein the license plate information includes the license plate number of the target vehicle.
Optionally, in the system for recognizing a license plate of a vehicle provided in the embodiment of the present application, the system further includes: and the memory is connected with the processor 33 and is used for binding and storing the license plate information of the target vehicle and the IMSI code existing in the target vehicle, and binding and storing the license plate information of the target vehicle and the image information of the target vehicle.
Optionally, in the system for recognizing a license plate of a vehicle provided in the embodiment of the present application, the processor 33 includes: an IMSI number receiving unit, connected to the micro base station device 31, configured to receive an IMSI number set existing in the target vehicle and sent by the micro base station device 31; the image information receiving unit is connected with the vehicle image acquisition device 32 and used for receiving the image information sent by the vehicle image acquisition device 32 and determining the license plate information of the target vehicle based on the image information; the license plate information determining unit is linked with the IMSI code receiving unit and the image information receiving unit and is used for determining reference license plate information meeting a first preset condition in the plurality of license plate information bound by the IMSI code and determining the license plate information of a target vehicle based on the reference license plate information; and the binding storage unit is connected with the IMSI code receiving unit, the image information receiving unit and the memory and is used for binding and storing the license plate information of the target vehicle and the IMSI code set existing in the target vehicle in the memory and/or binding and storing the license plate information and the image information of the target vehicle in the memory.
In the system for recognizing the license plate of the vehicle provided by the embodiment of the application, the micro base station device 31 is used for recognizing the International Mobile Subscriber Identity (IMSI) code existing in the target vehicle, wherein the target vehicle is a vehicle running on a target road section, and the IMSI code is identification information carried by target equipment located in the target vehicle; the vehicle image acquisition device 32 acquires image information of a target vehicle on a target road section; the processor 33 is connected to the micro base station device 31 and the vehicle image acquiring device 32, and determines whether the image information of the target vehicle can determine the license plate information of the target vehicle, and if the license plate information of the target vehicle can be determined, determining license plate information of the target vehicle based on the image information of the target vehicle, if the license plate information of the target vehicle cannot be determined, determining the license plate information of the target vehicle based on the IMSI code, wherein, the license plate information comprises the license plate number of the target vehicle, which solves the problem that the license plate number of the vehicle can not be accurately identified in the related technology, the system for identifying the license plate of the vehicle provided by the embodiment of the application, under the condition that the image information of the target vehicle cannot determine the license plate information of the target vehicle, the license plate information of the target vehicle is determined based on the IMSI code, so that the technical effects of accurately identifying the license plate number of the vehicle and preventing the identification process from being interfered by external factors are achieved.
The embodiment of the application also provides a device for recognizing the license plate of the vehicle, and it should be noted that the device for recognizing the license plate of the vehicle in the embodiment of the application can be used for executing the method for recognizing the license plate of the vehicle in the embodiment of the application. The following describes a device for recognizing a license plate of a vehicle according to an embodiment of the present application.
Fig. 4 is a schematic diagram of an apparatus for recognizing a license plate of a vehicle according to an embodiment of the present application. As shown in fig. 4, the apparatus includes: an acquisition unit 41, a judgment unit 42, a first determination unit 43, and a second determination unit 44.
An obtaining unit 41, configured to obtain an International Mobile Subscriber Identity (IMSI) set and image information of a target vehicle existing in the target vehicle, where the target vehicle is a vehicle traveling on a target road segment, and the IMSI is identification information carried by a target device located in the target vehicle;
the judging unit 42 is configured to judge whether the image information of the target vehicle can determine license plate information of the target vehicle, where the license plate information includes a license plate number of the target vehicle;
a first determining unit 43, configured to determine license plate information of the target vehicle based on the image information of the target vehicle if the license plate information of the target vehicle can be determined;
and a second determining unit 44, configured to determine the license plate information of the target vehicle based on the IMSI number if the license plate information of the target vehicle cannot be determined.
According to the device for recognizing the license plate of the vehicle, provided by the embodiment of the application, an International Mobile Subscriber Identity (IMSI) code set and image information of a target vehicle existing in the target vehicle are obtained through an obtaining unit 41, wherein the target vehicle is a vehicle running on a target road section, and the IMSI code is identification information carried by target equipment located in the target vehicle; the judging unit 42 judges whether the image information of the target vehicle can determine the license plate information of the target vehicle, wherein the license plate information includes the license plate number of the target vehicle; the first determining unit 43 determines the license plate information of the target vehicle based on the image information of the target vehicle if the license plate information of the target vehicle can be determined; the second determining unit 44 determines the license plate information of the target vehicle based on the IMSI number under the condition that the license plate information of the target vehicle cannot be determined, so that the problem that the license plate number of the vehicle cannot be accurately identified in the related art is solved.
Optionally, in the apparatus for recognizing a license plate of a vehicle provided in an embodiment of the present application, the apparatus further includes: the first storage unit is used for binding and storing the license plate information of the target vehicle and each IMSI code in the IMSI code set after the license plate information of the target vehicle is determined; and the second storage unit is used for binding and storing the license plate information and the image information of the target vehicle.
Optionally, in the apparatus for recognizing a license plate of a vehicle provided in an embodiment of the present application, the first storage unit includes: the first judgment module is used for sequentially judging whether the license plate information is bound and stored with each IMSI code; the increasing module is used for increasing the number of times of binding the license plate information and the IMSI code by a preset number of unit values under the condition that the license plate information and the IMSI code are bound and stored; and the storage module is used for binding and storing the license plate information of the target vehicle and the IMSI code which is not bound and stored under the condition that the license plate information and the IMSI code are not bound and stored.
Optionally, in the apparatus for recognizing a license plate of a vehicle provided in the embodiment of the present application, the second determining unit 44 includes: the first determining module is used for determining reference license plate information meeting a first preset condition in the plurality of license plate information bound by the IMSI code; the second determining module is used for determining the license plate information of the target vehicle based on the reference license plate information under the condition that the reference license plate information exists; the first execution module is configured to, in the absence of the reference license plate information, re-execute the step of determining the reference license plate information meeting the first preset condition from among the plurality of license plate information bound by the IMSI number after a first preset time period.
Optionally, in the apparatus for recognizing a license plate of a vehicle provided in an embodiment of the present application, the second determining module includes: the acquisition submodule is used for acquiring reference image information corresponding to the reference license plate information, wherein the reference image information comprises the characteristics of a reference vehicle corresponding to the reference license plate information; the judging submodule is used for judging whether the similarity between the characteristics of the target vehicle and the characteristics of the reference vehicle meets a second preset condition or not according to the reference image information and the image information of the target vehicle, wherein the image information of the target vehicle comprises the characteristics of the target vehicle; the determining submodule is used for determining the reference license plate information as the license plate information of the target vehicle under the condition that the similarity meets a second preset condition; and the execution submodule is used for re-executing the step of determining the reference license plate information meeting the first preset condition in the plurality of license plate information bound by the IMSI code after a second preset time period under the condition that the similarity does not meet the second preset condition.
Optionally, in the apparatus for recognizing a license plate of a vehicle provided in an embodiment of the present application, the apparatus further includes: the acquisition module is used for acquiring the license plate information determined by the target vehicle under the condition that the reference license plate information exists; the second judgment module is used for judging whether the reference license plate information is the same as the license plate information determined by the target vehicle; the second execution module is used for not executing the step of determining the license plate information of the target vehicle based on the reference license plate information under the condition that the reference license plate information is the same as the license plate information determined by the target vehicle; and the third execution module is used for continuously executing the step of determining the license plate information of the target vehicle based on the reference license plate information under the condition that the reference license plate information is different from the license plate information determined by the target vehicle.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (8)
1. A method of identifying a license plate of a vehicle, comprising:
acquiring an International Mobile Subscriber Identity (IMSI) set and image information of a target vehicle existing in the target vehicle, wherein the target vehicle is a vehicle running on a target road section, and the IMSI is identification information carried by target equipment located in the target vehicle;
judging whether the image information of the target vehicle can determine the license plate information of the target vehicle or not, wherein the license plate information comprises the license plate number of the target vehicle;
if the license plate information of the target vehicle can be determined, determining the license plate information of the target vehicle based on the image information of the target vehicle;
if the license plate information of the target vehicle cannot be determined, determining the license plate information of the target vehicle based on the IMSI code;
wherein after determining the license plate information of the target vehicle, the method further comprises:
binding and storing the license plate information of the target vehicle and each IMSI code in the IMSI code set;
binding and storing the license plate information of the target vehicle and the image information;
wherein determining the license plate information of the target vehicle based on the IMSI code comprises:
determining reference license plate information meeting a first preset condition in the plurality of license plate information bound by the IMSI code;
and if the reference license plate information exists, determining the license plate information of the target vehicle based on the reference license plate information.
2. The method of claim 1, wherein storing the license plate information of the target vehicle in a binding relationship with each of the IMSI codes in the set of IMSI codes comprises:
sequentially judging whether the license plate information is bound and stored with each IMSI code;
if the license plate information and the IMSI code are bound and stored, increasing the number of times of binding the license plate information and the IMSI code by a preset number of unit values;
and if the license plate information and the IMSI code are not bound and stored, binding the license plate information of the target vehicle and the IMSI code which is not bound and stored.
3. The method of claim 1, wherein the method for determining license plate information of the target vehicle based on the IMSI number further comprises:
and if the reference license plate information does not exist, after a first preset time period, re-executing the step of determining the reference license plate information meeting the first preset condition in the plurality of license plate information bound by the IMSI code.
4. The method of claim 1, wherein determining license plate information for the target vehicle based on the reference license plate information comprises:
acquiring reference image information corresponding to the reference license plate information, wherein the reference image information comprises characteristics of a reference vehicle corresponding to the reference license plate information;
judging whether the similarity between the characteristics of the target vehicle and the characteristics of the reference vehicle meets a second preset condition or not according to reference image information and the image information of the target vehicle, wherein the image information of the target vehicle comprises the characteristics of the target vehicle;
if the similarity meets a second preset condition, determining that the reference license plate information is the license plate information of the target vehicle;
and if the similarity does not meet a second preset condition, after a second preset time period, re-executing the step of determining the reference license plate information meeting the first preset condition in the plurality of license plate information bound by the IMSI code.
5. The method of claim 1, wherein in the presence of the reference license plate information, the method further comprises:
acquiring the determined license plate information of the target vehicle;
judging whether the reference license plate information is the same as the license plate information determined by the target vehicle;
if the reference license plate information is the same as the license plate information determined by the target vehicle, the step of determining the license plate information of the target vehicle based on the reference license plate information is not executed;
and if the reference license plate information is different from the license plate information determined by the target vehicle, continuing to execute the step of determining the license plate information of the target vehicle based on the reference license plate information.
6. A system for identifying a license plate of a vehicle, comprising:
the system comprises a micro base station device and a micro base station device, wherein the micro base station device is used for identifying an International Mobile Subscriber Identity (IMSI) code existing in a target vehicle, the target vehicle is a vehicle running on a target road section, and the IMSI code is identification information carried by target equipment located in the target vehicle;
the vehicle image acquisition device is used for acquiring image information of a target vehicle on a target road section;
the processor is connected with the micro base station equipment and the vehicle image acquisition device, and is used for judging whether the image information of the target vehicle can determine the license plate information of the target vehicle or not, if so, determining the license plate information of the target vehicle based on the image information of the target vehicle, and if not, determining the license plate information of the target vehicle based on the IMSI code, wherein the license plate information comprises the license plate number of the target vehicle; and
the memory is connected with the processor and used for binding and storing the license plate information of the target vehicle and the IMSI code existing in the target vehicle, and binding and storing the license plate information of the target vehicle and the image information of the target vehicle;
the processor, configured to determine license plate information of the target vehicle based on the IMSI number, is specifically configured to: determining reference license plate information meeting a first preset condition in the plurality of license plate information bound by the IMSI code; and if the reference license plate information exists, determining the license plate information of the target vehicle based on the reference license plate information.
7. The system of claim 6, wherein the processor comprises:
an IMSI number receiving unit, connected to the micro base station device, configured to receive an IMSI number set existing in the target vehicle and sent by the micro base station device;
the image information receiving unit is connected with the vehicle image acquisition device and used for receiving the image information sent by the vehicle image acquisition device and determining the license plate information of the target vehicle based on the image information;
the license plate information determining unit is connected with the IMSI code receiving unit and the image information receiving unit and is used for determining reference license plate information meeting a first preset condition in the plurality of license plate information bound by the IMSI code and determining the license plate information of the target vehicle based on the reference license plate information;
and the binding storage unit is connected with the IMSI code receiving unit, the image information receiving unit and the memory and is used for binding and storing the license plate information of the target vehicle and the IMSI code set existing in the target vehicle in the memory and/or binding and storing the license plate information of the target vehicle and the image information in the memory.
8. An apparatus for recognizing a license plate of a vehicle, comprising:
an obtaining unit, configured to obtain an International Mobile Subscriber Identity (IMSI) set and image information of a target vehicle existing in the target vehicle, where the target vehicle is a vehicle traveling on a target road segment, and the IMSI number is identification information carried by a target device located in the target vehicle;
the judging unit is used for judging whether the image information of the target vehicle can determine the license plate information of the target vehicle or not, wherein the license plate information comprises the license plate number of the target vehicle;
the first determining unit is used for determining the license plate information of the target vehicle based on the image information of the target vehicle under the condition that the license plate information of the target vehicle can be determined;
a second determining unit, configured to determine, based on the IMSI number, license plate information of the target vehicle if the license plate information of the target vehicle cannot be determined; and
the device further comprises: the first storage unit is used for binding and storing the license plate information of the target vehicle and each IMSI code in the IMSI code set after the license plate information of the target vehicle is determined; the second storage unit is used for binding and storing the license plate information of the target vehicle and the image information of the target vehicle; the second determining unit comprises a first determining module and a second determining module, the first determining module is used for determining reference license plate information meeting a first preset condition in the plurality of license plate information bound by the IMSI code, and the second determining module is used for determining the license plate information of the target vehicle based on the reference license plate information under the condition that the reference license plate information exists.
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| CN113259853B (en) * | 2020-12-23 | 2024-03-01 | 南京熊猫电子股份有限公司 | Method and system for automatically identifying mobile phone roaming places of drivers and passengers |
| CN113936270A (en) * | 2021-09-08 | 2022-01-14 | 北京万集科技股份有限公司 | Vehicle identification method and device suitable for off-site law enforcement |
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