CN110718066A - License plate recognition method, medium, device and system - Google Patents
License plate recognition method, medium, device and system Download PDFInfo
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- CN110718066A CN110718066A CN201910818775.2A CN201910818775A CN110718066A CN 110718066 A CN110718066 A CN 110718066A CN 201910818775 A CN201910818775 A CN 201910818775A CN 110718066 A CN110718066 A CN 110718066A
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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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/60—Type of objects
- G06V20/62—Text, e.g. of license plates, overlay texts or captions on TV images
- G06V20/625—License plates
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Abstract
The invention provides a license plate recognition method, a license plate recognition medium, license plate recognition equipment and a license plate recognition system, wherein the license plate recognition method comprises the following steps: respectively identifying the license plate of the current vehicle entering the identification range through a main identifier and an auxiliary identifier; then respectively analyzing the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer to correspondingly obtain license plate recognition types; when the license plate identification type corresponding to the main identifier is whole license plate rejection and the license plate identification type corresponding to the auxiliary identifier is non-whole license plate rejection, taking the license plate identification result of the auxiliary identifier as the license plate information of the current vehicle; when the license plate recognition type corresponding to the main recognizer is non-whole license plate rejection and the license plate recognition type corresponding to the auxiliary recognizer is whole license plate rejection, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle; therefore, the license plate is identified by the main identifier and the auxiliary identifier simultaneously, so that the accuracy of license plate identification and the efficiency of license plate identification are improved.
Description
Technical Field
The present invention relates to the field of traffic information technologies, and in particular, to a license plate recognition method, a computer-readable storage medium, a computer device, and a license plate recognition system.
Background
In the related technology, because the entrance and the exit of part of the parking lot are arranged at the places with preset turning amplitude, the vehicle can turn greatly when entering the entrance and the exit recognition lanes, so that the license plate of the vehicle can not face the license plate recognizer positively, the condition of incomplete license plate recognition and the like is caused, and the license plate recognition accuracy and the license plate recognition efficiency are greatly reduced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above. Therefore, one objective of the present invention is to provide a license plate recognition method, which uses a primary recognizer and a secondary recognizer to simultaneously recognize a license plate, thereby improving the accuracy of license plate recognition and the efficiency of license plate recognition.
A second object of the invention is to propose a computer-readable storage medium.
A third object of the invention is to propose a computer device.
The fourth purpose of the invention is to provide a license plate recognition system.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a license plate recognition method, including the following steps: respectively identifying the license plate of a current vehicle entering an identification range through a main identifier and an auxiliary identifier, wherein the main identifier and the auxiliary identifier are arranged at an entrance with a preset turning amplitude, and the main identifier and the auxiliary identifier are linked; analyzing the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer respectively to correspondingly obtain license plate recognition types, wherein the license plate recognition types comprise whole plate rejection and non-whole plate rejection; when the license plate identification type corresponding to the main identifier is whole plate rejection and the license plate identification type corresponding to the auxiliary identifier is non-whole plate rejection, taking the license plate identification result of the auxiliary identifier as the license plate information of the current vehicle; and when the license plate identification type corresponding to the main identifier is non-whole license plate rejection and the license plate identification type corresponding to the auxiliary identifier is whole license plate rejection, taking the license plate identification result of the main identifier as the license plate information of the current vehicle.
According to the license plate recognition method provided by the embodiment of the invention, firstly, license plate recognition is carried out on a current vehicle entering a recognition range through a main recognizer and an auxiliary recognizer respectively, wherein the main recognizer and the auxiliary recognizer are arranged at an entrance with a preset turning amplitude, and the main recognizer and the auxiliary recognizer are linked; analyzing the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer respectively to correspondingly obtain license plate recognition types, wherein the license plate recognition types comprise whole plate rejection and non-whole plate rejection; when the license plate identification type corresponding to the main identifier is whole license plate rejection and the license plate identification type corresponding to the auxiliary identifier is non-whole license plate rejection, taking the license plate identification result of the auxiliary identifier as the license plate information of the current vehicle; when the license plate recognition type corresponding to the main recognizer is non-whole license plate rejection and the license plate recognition type corresponding to the auxiliary recognizer is whole license plate rejection, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle; therefore, the license plates are simultaneously identified through the main identifier and the auxiliary identifier, and the identification result that the identification type of the license plate is non-whole plate rejection is selected from the identification result as the license plate information of the current vehicle, so that the accuracy rate of license plate identification and the efficiency of license plate identification are improved.
In addition, the license plate recognition method provided by the embodiment of the invention can also have the following additional technical characteristics:
optionally, when the license plate recognition type corresponding to the primary recognizer and the license plate recognition type corresponding to the secondary recognizer are both non-whole license plate rejection, respectively judging whether the license plate recognition result of the primary recognizer and the license plate recognition result of the secondary recognizer are in a preset license plate recognition database, wherein if the license plate recognition result of the primary recognizer is in the preset license plate recognition database, the license plate recognition result of the primary recognizer is used as the license plate information of the current vehicle; if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, but the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer as the license plate information of the current vehicle; and if the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer are not in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle.
Optionally, when the license plate recognition type corresponding to the primary recognizer and the license plate recognition type corresponding to the secondary recognizer are both non-whole license plate rejection, judging whether the license plate recognition result of the primary recognizer is in a preset license plate recognition database, wherein if the license plate recognition result of the primary recognizer is in the preset license plate recognition database, the license plate recognition result of the primary recognizer is directly used as the license plate information of the current vehicle; if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, further judging whether the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database; if the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer as the license plate information of the current vehicle; and if the license plate recognition result of the auxiliary recognizer is not in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle.
Optionally, the entrance and exit has a left-turning lane or a right-turning lane of the preset turning amplitude.
In order to achieve the above object, a second aspect of the present invention provides a computer-readable storage medium, on which a license plate recognition program is stored, and the license plate recognition program, when executed by a processor, implements the license plate recognition method as described above.
According to the computer-readable storage medium of the embodiment of the invention, the license plate recognition program is stored, so that the processor can realize the license plate recognition method when executing the license plate recognition program, and the accuracy rate of license plate recognition and the efficiency of license plate recognition are improved.
In order to achieve the above object, a third embodiment of the present invention provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the license plate recognition method as described above is implemented.
According to the computer equipment provided by the embodiment of the invention, the computer program capable of running on the processor is stored through the memory, so that the processor can realize the license plate recognition method when executing the computer program, and the accuracy rate of license plate recognition and the efficiency of license plate recognition are improved.
In order to achieve the above object, a license plate recognition system provided in an embodiment of a fourth aspect of the present invention includes a main recognizer and an auxiliary recognizer, where the main recognizer and the auxiliary recognizer are disposed at an entrance and an exit with a preset turning amplitude, and the main recognizer and the auxiliary recognizer are linked, and the main recognizer and the auxiliary recognizer respectively perform license plate recognition on a current vehicle entering a recognition range; the processor is respectively connected with the main recognizer and the auxiliary recognizer and is used for respectively analyzing the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer to correspondingly obtain license plate recognition types, wherein the license plate recognition types comprise whole plate rejection and non-whole plate rejection; the processor is further configured to, when the license plate recognition type corresponding to the primary recognizer is whole-license plate rejection and the license plate recognition type corresponding to the secondary recognizer is non-whole-license plate rejection, take the license plate recognition result of the secondary recognizer as the license plate information of the current vehicle; and when the license plate identification type corresponding to the main identifier is non-whole license plate rejection and the license plate identification type corresponding to the auxiliary identifier is whole license plate rejection, taking the license plate identification result of the main identifier as the license plate information of the current vehicle.
According to the license plate recognition system provided by the embodiment of the invention, a main recognizer and an auxiliary recognizer respectively recognize the license plate of a current vehicle entering a recognition range, and a processor respectively analyzes the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer to correspondingly obtain the license plate recognition types, wherein the license plate recognition types comprise whole plate rejection and non-whole plate rejection; when the license plate recognition type corresponding to the main recognizer is non-whole license plate rejection and the license plate recognition type corresponding to the auxiliary recognizer is whole license plate rejection, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle; therefore, the license plates are simultaneously identified through the main identifier and the auxiliary identifier, and the identification result that the identification type of the license plate is non-whole plate rejection is selected from the identification result as the license plate information of the current vehicle, so that the accuracy rate of license plate identification and the efficiency of license plate identification are improved.
In addition, the license plate recognition system provided by the above embodiment of the present invention may further have the following additional technical features:
optionally, the processor is further configured to, when the license plate recognition type corresponding to the primary recognizer and the license plate recognition type corresponding to the secondary recognizer are both non-whole license plates and rejected, respectively determine whether the license plate recognition result of the primary recognizer and the license plate recognition result of the secondary recognizer are in a preset license plate recognition database, wherein if the license plate recognition result of the primary recognizer is in the preset license plate recognition database, the license plate recognition result of the primary recognizer is used as the license plate information of the current vehicle; if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, but the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer as the license plate information of the current vehicle; and if the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer are not in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle.
Optionally, the processor is further configured to, when the license plate recognition type corresponding to the primary recognizer and the license plate recognition type corresponding to the secondary recognizer are both non-whole license plates and rejected, determine whether the license plate recognition result of the primary recognizer is in a preset license plate recognition database, wherein if the license plate recognition result of the primary recognizer is in the preset license plate recognition database, directly use the license plate recognition result of the primary recognizer as the license plate information of the current vehicle; if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, further judging whether the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database; if the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer as the license plate information of the current vehicle; and if the license plate recognition result of the auxiliary recognizer is not in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle.
Optionally, the entrance and exit has a left-turning lane or a right-turning lane of the preset turning amplitude.
Drawings
FIG. 1 is a schematic flow chart of a license plate recognition method according to an embodiment of the present invention;
fig. 2 is a block diagram of a license plate recognition system according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
When an existing vehicle identifies a lane through an entrance with a preset turning amplitude, the condition that the license plate of the vehicle cannot face a license plate identifier in the forward direction usually exists, so that the license plate identification effect is poor; the invention provides a license plate recognition method, which comprises the steps of firstly, respectively carrying out license plate recognition on a current vehicle entering a recognition range through a main recognizer and an auxiliary recognizer, wherein the main recognizer and the auxiliary recognizer are arranged at an entrance with a preset turning amplitude, and the main recognizer and the auxiliary recognizer are linked; analyzing the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer respectively to correspondingly obtain license plate recognition types, wherein the license plate recognition types comprise whole plate rejection and non-whole plate rejection; when the license plate identification type corresponding to the main identifier is whole license plate rejection and the license plate identification type corresponding to the auxiliary identifier is non-whole license plate rejection, taking the license plate identification result of the auxiliary identifier as the license plate information of the current vehicle; when the license plate recognition type corresponding to the main recognizer is non-whole license plate rejection and the license plate recognition type corresponding to the auxiliary recognizer is whole license plate rejection, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle; therefore, the license plates are simultaneously identified through the main identifier and the auxiliary identifier, and the identification result that the identification type of the license plate is non-whole plate rejection is selected from the identification result as the license plate information of the current vehicle, so that the accuracy rate of license plate identification and the efficiency of license plate identification are improved.
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
FIG. 1 is a schematic flow chart of a license plate recognition method according to an embodiment of the present invention; as shown in fig. 1, the license plate recognition method according to the embodiment of the present invention includes the following steps:
That is to say, two identifiers are deployed on a passing lane with a preset turning amplitude, the two identifiers are respectively set as a main identifier and an auxiliary identifier, and the main identifier and the auxiliary identifier are linked, so that when one identifier identifies, the other identifier also identifies together; when the vehicle enters the identification range of the passing lane, the main recognizer and the auxiliary recognizer are triggered to identify the license plate of the current vehicle.
It should be noted that when a vehicle enters a traffic lane with a preset turning amplitude, the vehicle cannot face the license plate identifier in the forward direction in the turning process due to the large-amplitude turning of the lane, so that the license plate identification effect is poor, and even the license plate may not be identified; therefore, the auxiliary recognizer linked with the main recognizer is arranged to capture the license plate synchronously, so that the license plate recognition effect is improved, and the license plate recognition accuracy is improved.
That is to say, the license plate recognition types include whole license plate rejection and non-whole license plate rejection, and the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer are analyzed, so that whether the license plate recognition types respectively obtained by the main recognizer and the auxiliary recognizer are whole license plate rejection or non-whole license plate rejection is judged.
It should be noted that the whole license plate rejection means that the license plate cannot be identified.
And 103, when the license plate identification type corresponding to the main recognizer is whole license plate rejection and the license plate identification type corresponding to the auxiliary recognizer is non-whole license plate rejection, taking the license plate identification result of the auxiliary recognizer as the license plate information of the current vehicle.
That is, the license plate recognition types of the main recognizer and the auxiliary recognizer are different, and if the license plate recognition type corresponding to the main recognizer is whole plate rejection and the license plate recognition type corresponding to the auxiliary recognizer is non-whole plate rejection, the license plate recognition result of the auxiliary recognizer is used as the license plate information of the current vehicle.
As an embodiment, when the recognition result of the primary recognizer is that the license plate cannot be recognized, and the recognition result of the secondary recognizer is that the license plate is recognized, and whether the license plate recognized by the secondary recognizer is accurate or complete, the license plate recognition result of the secondary recognizer is used as the license plate information of the current vehicle.
And step 104, when the license plate identification type corresponding to the main recognizer is non-whole license plate rejection and the license plate identification type corresponding to the auxiliary recognizer is whole license plate rejection, taking the license plate identification result of the main recognizer as the license plate information of the current vehicle.
That is, the license plate recognition types of the main recognizer and the auxiliary recognizer are different, and if the license plate recognition type corresponding to the main recognizer is non-whole license plate rejection, and the license plate recognition type corresponding to the auxiliary recognizer is whole license plate rejection, the license plate recognition result of the main recognizer is used as the license plate information of the current vehicle.
As an embodiment, when the recognition result of the auxiliary recognizer is that the license plate cannot be recognized, and the recognition result of the main recognizer is that the license plate is recognized, and whether the license plate recognized by the main recognizer is accurate or complete, the license plate recognition result of the main recognizer is used as the license plate information of the current vehicle.
It should be noted that the most accurate license plate recognition result is found as the final license plate information of the current vehicle by analyzing the recognition result of the main recognizer and the recognition result of the auxiliary recognizer, so as to increase the license plate recognition effect and improve the license plate recognition accuracy.
Further, when the license plate recognition type corresponding to the main recognizer and the license plate recognition type corresponding to the auxiliary recognizer are both non-whole license rejection, respectively judging whether the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer are in a preset license plate recognition database, wherein if the license plate recognition result of the main recognizer is in the preset license plate recognition database, the license plate recognition result of the main recognizer is used as the license plate information of the current vehicle; if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, but the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer as the license plate information of the current vehicle; and if the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer are not in a preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle.
As an embodiment, when the recognition results of the main recognizer and the auxiliary recognizer recognize the license plate, judging whether the license plate recognized by the main recognizer and the auxiliary recognizer exists in a preset license plate recognition database, and if the license plate recognition result of the main recognizer is in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle regardless of whether the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database; if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, but the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer as the license plate information of the current vehicle; and if the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer are not in a preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle.
It should be noted that the license plates recognized by the main recognizer and the auxiliary recognizer are different; if the license plates recognized by the main recognizer and the auxiliary recognizer are the same, the recognition result of the main recognizer is used as the standard; namely, the recognition result of the main recognizer is used as the license plate information of the current vehicle.
Further, when the license plate recognition type corresponding to the main recognizer and the license plate recognition type corresponding to the auxiliary recognizer are both non-whole license plate rejection, judging whether the license plate recognition result of the main recognizer is in a preset license plate recognition database, wherein if the license plate recognition result of the main recognizer is in the preset license plate recognition database, the license plate recognition result of the main recognizer is directly used as the license plate information of the current vehicle; if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, further judging whether the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database; if the license plate recognition result of the auxiliary recognizer is in a preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer as the license plate information of the current vehicle; and if the license plate recognition result of the auxiliary recognizer is not in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle.
As an embodiment, when the main recognizer and the auxiliary recognizer recognize the license plate, firstly, judging whether the license plate recognition result of the main recognizer is in a preset license plate recognition database, if the license plate recognition result of the main recognizer is in the preset license plate recognition database, directly taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle, and not judging the recognition result of the auxiliary recognizer; if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, then judging the license plate recognition result of the auxiliary recognizer, namely judging whether the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database, and if the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer as the license plate information of the current vehicle; and if the license plate recognition result of the auxiliary recognizer is not in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle.
It should be noted that the license plates recognized by the main recognizer and the auxiliary recognizer are different; if the license plates recognized by the main recognizer and the auxiliary recognizer are the same, the recognition result of the main recognizer is used as the standard; namely, the recognition result of the main recognizer is used as the license plate information of the current vehicle.
As an embodiment, the passageway has a left-turning lane or a right-turning lane with a preset turning width.
In summary, according to the license plate recognition method of the embodiment of the invention, firstly, the license plate recognition is performed on the current vehicle entering the recognition range through the main recognizer and the auxiliary recognizer respectively, wherein the main recognizer and the auxiliary recognizer are arranged at the entrance and exit with the preset turning amplitude, and the main recognizer and the auxiliary recognizer are linked; analyzing the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer respectively to correspondingly obtain license plate recognition types, wherein the license plate recognition types comprise whole plate rejection and non-whole plate rejection; when the license plate identification type corresponding to the main identifier is whole license plate rejection and the license plate identification type corresponding to the auxiliary identifier is non-whole license plate rejection, taking the license plate identification result of the auxiliary identifier as the license plate information of the current vehicle; when the license plate recognition type corresponding to the main recognizer is non-whole license plate rejection and the license plate recognition type corresponding to the auxiliary recognizer is whole license plate rejection, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle; therefore, the license plates are simultaneously identified through the main identifier and the auxiliary identifier, and the identification result that the identification type of the license plate is non-whole plate rejection is selected from the identification result as the license plate information of the current vehicle, so that the accuracy rate of license plate identification and the efficiency of license plate identification are improved.
In addition, the embodiment of the invention also provides a computer readable storage medium, wherein a license plate recognition program is stored on the computer readable storage medium, and the license plate recognition program realizes the license plate recognition method when being executed by a processor.
According to the computer-readable storage medium of the embodiment of the invention, the license plate recognition program is stored, so that the processor can realize the license plate recognition method when executing the license plate recognition program, and the accuracy rate of license plate recognition and the efficiency of license plate recognition are improved.
In addition, an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the license plate recognition method as described above is implemented.
According to the computer equipment provided by the embodiment of the invention, the computer program capable of running on the processor is stored through the memory, so that the processor can realize the license plate recognition method when executing the computer program, and the accuracy rate of license plate recognition and the efficiency of license plate recognition are improved.
FIG. 2 is a block diagram of a license plate recognition system according to an embodiment of the present invention; as shown in fig. 2, the license plate recognition system of the present embodiment includes: a primary recognizer 202, a secondary recognizer 203, and a processor 201.
The main recognizer 202 and the auxiliary recognizer 203 are arranged at an entrance with a preset turning amplitude, the main recognizer 202 and the auxiliary recognizer 203 are linked, and the main recognizer 202 and the auxiliary recognizer 203 respectively recognize the license plate of the current vehicle entering a recognition range;
the processor 201 is connected with the main recognizer 202 and the auxiliary recognizer 203 respectively, and the processor 201 is used for analyzing the license plate recognition result of the main recognizer 202 and the license plate recognition result of the auxiliary recognizer 203 respectively to correspondingly obtain license plate recognition types, wherein the license plate recognition types comprise whole license plate rejection and non-whole license plate rejection;
the processor 201 is further configured to, when the license plate recognition type corresponding to the primary recognizer 202 is whole-license rejection and the license plate recognition type corresponding to the secondary recognizer 203 is non-whole-license rejection, take the license plate recognition result of the secondary recognizer 203 as the license plate information of the current vehicle; when the license plate recognition type corresponding to the primary recognizer 202 is non-whole license plate rejection and the license plate recognition type corresponding to the secondary recognizer 203 is whole license plate rejection, taking the license plate recognition result of the primary recognizer 202 as the license plate information of the current vehicle.
As an embodiment, when the license plate recognition type corresponding to the primary recognizer 202 and the license plate recognition type corresponding to the secondary recognizer 203 are both non-whole license plate rejection, respectively judging whether the license plate recognition result of the primary recognizer 202 and the license plate recognition result of the secondary recognizer 203 are in a preset license plate recognition database, wherein if the license plate recognition result of the primary recognizer 202 is in the preset license plate recognition database, the license plate recognition result of the primary recognizer 202 is used as the license plate information of the current vehicle; if the license plate recognition result of the main recognizer 202 is not in the preset license plate recognition database, but the license plate recognition result of the auxiliary recognizer 203 is in the preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer 203 as the license plate information of the current vehicle; if the license plate recognition result of the main recognizer 202 and the license plate recognition result of the auxiliary recognizer 203 are not in the preset license plate recognition database, the license plate recognition result of the main recognizer 202 is used as the license plate information of the current vehicle.
As an embodiment, the processor 201 is further configured to, when the license plate recognition type corresponding to the primary recognizer 202 and the license plate recognition type corresponding to the secondary recognizer 203 are both non-whole license plates and rejected, determine whether the license plate recognition result of the primary recognizer 202 is in a preset license plate recognition database, wherein if the license plate recognition result of the primary recognizer 202 is in the preset license plate recognition database, directly take the license plate recognition result of the primary recognizer 202 as the license plate information of the current vehicle; if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, further judging whether the license plate recognition result of the auxiliary recognizer 203 is in the preset license plate recognition database; if the license plate recognition result of the auxiliary recognizer 203 is in a preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer 203 as the license plate information of the current vehicle; and if the license plate recognition result of the auxiliary recognizer 203 is not in the set license plate recognition database, taking the license plate recognition result of the main recognizer 202 as the license plate information of the current vehicle.
As one example, the doorway has a left-turn lane or a right-turn lane with a preset turn magnitude.
It should be noted that the foregoing explanation on the embodiment of the license plate recognition method is also applicable to the license plate recognition system of the embodiment, and is not repeated here.
In summary, according to the license plate recognition system of the embodiment of the present invention, the main recognizer and the auxiliary recognizer respectively recognize the license plate of the current vehicle entering the recognition range, and the processor respectively analyzes the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer to correspondingly obtain the license plate recognition types, where the license plate recognition types include whole plate reject and non-whole plate reject, and when the license plate recognition type corresponding to the main recognizer is whole plate reject and the license plate recognition type corresponding to the auxiliary recognizer is non-whole plate reject, the license plate recognition result of the auxiliary recognizer is used as the license plate information of the current vehicle; when the license plate recognition type corresponding to the main recognizer is non-whole license plate rejection and the license plate recognition type corresponding to the auxiliary recognizer is whole license plate rejection, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle; therefore, the license plates are simultaneously identified through the main identifier and the auxiliary identifier, and the identification result that the identification type of the license plate is non-whole plate rejection is selected from the identification result as the license plate information of the current vehicle, so that the accuracy rate of license plate identification and the efficiency of license plate identification are improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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 invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A license plate recognition method is characterized by comprising the following steps:
respectively identifying the license plate of a current vehicle entering an identification range through a main identifier and an auxiliary identifier, wherein the main identifier and the auxiliary identifier are arranged at an entrance with a preset turning amplitude, and the main identifier and the auxiliary identifier are linked;
analyzing the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer respectively to correspondingly obtain license plate recognition types, wherein the license plate recognition types comprise whole plate rejection and non-whole plate rejection;
when the license plate identification type corresponding to the main identifier is whole plate rejection and the license plate identification type corresponding to the auxiliary identifier is non-whole plate rejection, taking the license plate identification result of the auxiliary identifier as the license plate information of the current vehicle;
and when the license plate identification type corresponding to the main identifier is non-whole license plate rejection and the license plate identification type corresponding to the auxiliary identifier is whole license plate rejection, taking the license plate identification result of the main identifier as the license plate information of the current vehicle.
2. The license plate recognition method of claim 1, wherein when the license plate recognition type corresponding to the primary recognizer and the license plate recognition type corresponding to the secondary recognizer are both non-whole plate reject, it is determined whether the license plate recognition result of the primary recognizer and the license plate recognition result of the secondary recognizer are in a preset license plate recognition database, respectively,
if the license plate recognition result of the main recognizer is in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle;
if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, but the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer as the license plate information of the current vehicle;
and if the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer are not in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle.
3. The license plate recognition method of claim 1, wherein when the license plate recognition type corresponding to the primary recognizer and the license plate recognition type corresponding to the secondary recognizer are both non-whole plate reject, it is determined whether the license plate recognition result of the primary recognizer is within a preset license plate recognition database, wherein,
if the license plate recognition result of the main recognizer is in the preset license plate recognition database, directly taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle;
if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, further judging whether the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database;
if the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer as the license plate information of the current vehicle;
and if the license plate recognition result of the auxiliary recognizer is not in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle.
4. The license plate recognition method of any one of claims 1-3, wherein the entrance has a left-turn lane or a right-turn lane of the preset turn magnitude.
5. A computer-readable storage medium, on which a license plate recognition program is stored, the license plate recognition program implementing the license plate recognition method according to any one of claims 1 to 4 when executed by a processor.
6. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the computer program, implements the license plate recognition method of any of claims 1-4.
7. A license plate recognition system, comprising:
the vehicle license plate recognition system comprises a main recognizer and an auxiliary recognizer, wherein the main recognizer and the auxiliary recognizer are arranged at an entrance with a preset turning amplitude and are linked, and the main recognizer and the auxiliary recognizer respectively recognize license plates of current vehicles entering a recognition range;
the processor is respectively connected with the main recognizer and the auxiliary recognizer and is used for respectively analyzing the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer to correspondingly obtain license plate recognition types, wherein the license plate recognition types comprise whole plate rejection and non-whole plate rejection;
wherein the processor is further configured to,
when the license plate identification type corresponding to the main identifier is whole plate rejection and the license plate identification type corresponding to the auxiliary identifier is non-whole plate rejection, taking the license plate identification result of the auxiliary identifier as the license plate information of the current vehicle;
and when the license plate identification type corresponding to the main identifier is non-whole license plate rejection and the license plate identification type corresponding to the auxiliary identifier is whole license plate rejection, taking the license plate identification result of the main identifier as the license plate information of the current vehicle.
8. The license plate recognition system of claim 7, wherein the processor is further configured to determine whether the license plate recognition result of the primary recognizer and the license plate recognition result of the secondary recognizer are in a preset license plate recognition database, respectively, when the license plate recognition type corresponding to the primary recognizer and the license plate recognition type corresponding to the secondary recognizer are both non-whole plate reject,
if the license plate recognition result of the main recognizer is in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle;
if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, but the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer as the license plate information of the current vehicle;
and if the license plate recognition result of the main recognizer and the license plate recognition result of the auxiliary recognizer are not in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle.
9. The license plate recognition system of claim 7, wherein the processor is further configured to determine whether the license plate recognition result of the primary recognizer is in a predetermined license plate recognition database when the license plate recognition type corresponding to the primary recognizer and the license plate recognition type corresponding to the secondary recognizer are both non-whole plate reject,
if the license plate recognition result of the main recognizer is in the preset license plate recognition database, directly taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle;
if the license plate recognition result of the main recognizer is not in the preset license plate recognition database, further judging whether the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database;
if the license plate recognition result of the auxiliary recognizer is in the preset license plate recognition database, taking the license plate recognition result of the auxiliary recognizer as the license plate information of the current vehicle;
and if the license plate recognition result of the auxiliary recognizer is not in the preset license plate recognition database, taking the license plate recognition result of the main recognizer as the license plate information of the current vehicle.
10. The license plate recognition system of any one of claims 7-9, wherein the doorway has a left turn lane or a right turn lane of the preset turn magnitude.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111582261A (en) * | 2020-04-30 | 2020-08-25 | 浙江大华技术股份有限公司 | License plate recognition method and device for non-motor vehicle |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9303203D0 (en) * | 1993-05-28 | 1993-09-30 | Saab Scania Combitech Ab | Procedure and apparatus for registering vehicles in a toll |
| JP2001222680A (en) * | 2000-02-08 | 2001-08-17 | Mitsubishi Electric Corp | License plate number reader |
| CN1413861A (en) * | 2002-06-07 | 2003-04-30 | 珠海维中信息技术有限公司 | Automatic method for indentification of number plate of vehicle |
| CN200976204Y (en) * | 2006-09-20 | 2007-11-14 | 王枚 | License plate positioning recognition, vehicle tag positioning recognition and vehicle shaped recognition device |
| CN201145955Y (en) * | 2007-10-24 | 2008-11-05 | 北京万集科技有限责任公司 | License plate recognition system |
| CN201936452U (en) * | 2011-03-07 | 2011-08-17 | 毛振刚 | Automatic license plate recognition system |
| CN105023439A (en) * | 2015-07-02 | 2015-11-04 | 湖北贝力思智能科技有限公司 | Intelligent dynamic license plate recognition alarm system |
| CN106408950A (en) * | 2016-11-18 | 2017-02-15 | 北京停简单信息技术有限公司 | Parking lot entrance and exit license plate recognition system and method |
| CN107424413A (en) * | 2016-05-24 | 2017-12-01 | 北京奥斯达兴业科技有限公司 | Licence plate recognition method and system |
-
2019
- 2019-08-30 CN CN201910818775.2A patent/CN110718066A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9303203D0 (en) * | 1993-05-28 | 1993-09-30 | Saab Scania Combitech Ab | Procedure and apparatus for registering vehicles in a toll |
| JP2001222680A (en) * | 2000-02-08 | 2001-08-17 | Mitsubishi Electric Corp | License plate number reader |
| CN1413861A (en) * | 2002-06-07 | 2003-04-30 | 珠海维中信息技术有限公司 | Automatic method for indentification of number plate of vehicle |
| CN200976204Y (en) * | 2006-09-20 | 2007-11-14 | 王枚 | License plate positioning recognition, vehicle tag positioning recognition and vehicle shaped recognition device |
| CN201145955Y (en) * | 2007-10-24 | 2008-11-05 | 北京万集科技有限责任公司 | License plate recognition system |
| CN201936452U (en) * | 2011-03-07 | 2011-08-17 | 毛振刚 | Automatic license plate recognition system |
| CN105023439A (en) * | 2015-07-02 | 2015-11-04 | 湖北贝力思智能科技有限公司 | Intelligent dynamic license plate recognition alarm system |
| CN107424413A (en) * | 2016-05-24 | 2017-12-01 | 北京奥斯达兴业科技有限公司 | Licence plate recognition method and system |
| CN106408950A (en) * | 2016-11-18 | 2017-02-15 | 北京停简单信息技术有限公司 | Parking lot entrance and exit license plate recognition system and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111582261A (en) * | 2020-04-30 | 2020-08-25 | 浙江大华技术股份有限公司 | License plate recognition method and device for non-motor vehicle |
| CN111582261B (en) * | 2020-04-30 | 2024-01-19 | 浙江大华技术股份有限公司 | License plate recognition method and license plate recognition device for non-motor vehicle |
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