CN113505782A - Recognition system combining wagon license plate and carriage handwritten license plate - Google Patents
Recognition system combining wagon license plate and carriage handwritten license plate Download PDFInfo
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Abstract
The invention discloses a combination recognition system for a truck license plate and a carriage handwritten license plate, which comprises: the system comprises a picture input module, a vehicle detection module in signal connection with the picture input module, a license plate detection module in signal connection with the vehicle detection module, a text detection module in signal connection with the license plate detection module, a character segmentation module in signal connection with the text detection module, an OCR character detection module in signal connection with the character segmentation module and a license plate information output module in signal connection with the OCR character detection module; the license plate information output module is in signal connection with a carriage handwriting license plate detection module, and the carriage handwriting license plate detection module is in signal connection with a license plate detection module. According to the invention, the problems of low recognition rate and low accuracy in the detection of the license plate of the truck are solved, and traffic managers can be assisted to better supervise and enforce the truck; the safety and reliability of the system work are guaranteed, and meanwhile simplicity and practicability of installation can be achieved.
Description
Technical Field
The invention relates to the technical field of license plate recognition, in particular to a combination recognition system for a license plate of a truck and a handwritten license plate of a carriage.
Background
With the rapid development of social economy, the urbanization process is accelerated continuously, the economic and cultural activities of urban residents are frequent day by day, the number of motor vehicles is increased rapidly, and the urban traffic demand is increased rapidly. However, the urban road construction speed is far less than the motor vehicle growth speed, the traffic management level lags behind the traffic demand growth speed, and the problems of urban traffic jam, traffic accidents and pollution are increasingly remarkable.
At present, in the research of truck license plate recognition, most users acquire the license plate of a truck, and the license plate information of the truck is acquired through the recognition of the license plate, so that the interference items are many, the data accuracy cannot be achieved, and a large amount of manpower investment is consumed, so that the development of the combination recognition system and the combination recognition system software of the truck license plate and the hand-written carriage license plate becomes necessary.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a combination recognition system for the license plate of a truck and the handwritten license plate of a carriage, solves the problems of low recognition rate and low accuracy in the license plate detection of the truck, and can assist traffic managers to better supervise and enforce the truck; the safety and reliability of the system work are guaranteed, and meanwhile simplicity and practicability of installation can be achieved. To achieve the above objects and other advantages in accordance with the present invention, there is provided a combination recognition system for a license plate of a truck and a handwritten license plate in a vehicle compartment, comprising:
the system comprises a picture input module, a vehicle detection module in signal connection with the picture input module, a license plate detection module in signal connection with the vehicle detection module, a text detection module in signal connection with the license plate detection module, a character segmentation module in signal connection with the text detection module, an OCR character detection module in signal connection with the character segmentation module and a license plate information output module in signal connection with the OCR character detection module;
the license plate information output module is in signal connection with a carriage handwriting license plate detection module, and the carriage handwriting license plate detection module is in signal connection with a license plate detection module.
Preferably, the picture input module is used for the user to select the picture to be detected;
the vehicle detection module is used for detecting the vehicle in the picture, positioning the vehicle and cutting out a close-up image of the truck;
the license plate detection module is used for detecting and positioning a license plate of a truck;
the carriage handwritten license plate detection module is used for detecting and positioning the handwritten license plate of the wagon carriage;
the text detection module is used for detecting and positioning a text position in a license plate and detecting and positioning a text position of a carriage handwritten license plate;
the character segmentation module is used for segmenting characters at the positions of the characters of the positioned license plate and is also used for segmenting the characters of the positioned handwritten license plate in the car;
the OCR character detection module is used for speaking the segmented characters to perform OCR character recognition and converting the picture characters into computer characters;
the license plate information output module is used for extracting the license plate information of the vehicle from the computer characters and displaying the license plate information.
Preferably, the vehicle detection module is used for detecting and positioning the vehicle by adopting deep learning on the picture, and cutting out a close-up image of the truck according to the position of the vehicle.
Preferably, the license plate detection module detects the close-up picture of the truck by adopting a deep learning model, accurately positions the position of the license plate of the truck, and cuts out the close-up picture of the license plate.
Preferably, the carriage handwritten license plate detection module is used for accurately positioning the position of the handwritten license plate of the boxcar when the license plate sketch does not exist or the license plate information extracted from the license plate sketch is incomplete, and intercepting the close-up image of the handwritten license plate of the boxcar.
Preferably, the text detection module is configured to perform text detection on the input license plate close-up image or the carriage handwritten license plate close-up image to obtain location information of the text.
Preferably, the character segmentation module is configured to segment the text into single words according to the position information of the text obtained by the text detection module, so as to obtain position information of the single words
Preferably, the license plate information output module comprises a license plate information extraction module, a license plate information combination module in signal connection with the license plate information extraction module, and a license plate information display module in signal connection with the license plate information combination module, the license plate information extraction module is in signal connection with an OCR character detection module, and the license plate information extraction module is in signal connection with a carriage handwriting license plate detection module
Preferably, the license plate information extraction module is used for screening and filtering computer characters output by the OCR character recognition module, eliminating special characters in character data to obtain effective license plate information, extracting license plate information through a preset license plate number rule, and enabling all license plate information to be extracted to enter the license plate information display module; if the whole license plate information cannot be extracted, locking the key word information extracted from the close-up image of the license plate, feeding back the information to the carriage handwritten license plate detection module, then repeating the steps to obtain the character information of the carriage handwritten license plate, extracting the key information according to the carriage handwritten license plate information, recombining according to the previously locked key information, and inputting the recombined information into the license plate information combination module;
the license plate information combination module obtains complete information of the license plate through keyword matching and combination;
and the license plate information display module is used for displaying the obtained license plate information.
Compared with the prior art, the invention has the beneficial effects that: the combined recognition system for the wagon license plate and the compartment handwritten license plate comprises a picture input module, a vehicle detection module, a license plate detection module, a compartment handwritten license plate detection module, a text detection module, a character segmentation module, an OCR character recognition module and a license plate information output module, wherein the license plate of a wagon is recognized through the cooperation of the modules, and the license plate information enters a license plate information display module through the extraction of character information which can accord with the license plate, so that the handwritten license plate of the compartment is recognized under the condition that the license plate cannot be positioned or the information extracted from the license plate is incomplete, the license plate of a part of the wagon is prevented from being covered and the font of the compartment is prevented from being blurred, and the compartment handwritten license plate recognition and the license plate recognition are combined; the problems of low recognition rate and low accuracy in the detection of the license plate of the truck are solved, and traffic managers can be assisted to better supervise and enforce the truck; the safety and reliability of the system work are guaranteed, and meanwhile simplicity and practicability of installation can be achieved.
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FIG. 1 is a block diagram of the structural flow of a combination recognition system for a license plate of a truck and a handwritten license plate of a carriage according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a combination recognition system for a license plate of a truck and a handwritten license plate in a carriage includes: the system comprises a picture input module, a vehicle detection module in signal connection with the picture input module, a license plate detection module in signal connection with the vehicle detection module, a text detection module in signal connection with the license plate detection module, a character segmentation module in signal connection with the text detection module, an OCR character detection module in signal connection with the character segmentation module and a license plate information output module in signal connection with the OCR character detection module;
the license plate information output module is in signal connection with a carriage handwriting license plate detection module, and the carriage handwriting license plate detection module is in signal connection with a license plate detection module.
Further, the picture input module is used for a user to select a picture to be detected;
the vehicle detection module is used for detecting the vehicle in the picture, positioning the vehicle and cutting out a close-up image of the truck;
the license plate detection module is used for detecting and positioning a license plate of a truck;
the carriage handwritten license plate detection module is used for detecting and positioning the handwritten license plate of the wagon carriage;
the text detection module is used for detecting and positioning a text position in a license plate and detecting and positioning a text position of a carriage handwritten license plate;
the character segmentation module is used for segmenting characters at the positions of the characters of the positioned license plate and is also used for segmenting the characters of the positioned handwritten license plate in the car;
the OCR character detection module is used for speaking the segmented characters to perform OCR character recognition and converting the picture characters into computer characters;
the license plate information output module is used for extracting the license plate information of the vehicle from the computer characters and displaying the license plate information.
Further, the vehicle detection module is used for carrying out vehicle detection and positioning on the pictures by adopting deep learning, and cutting out a close-up image of the truck according to the position of the vehicle.
Furthermore, the license plate detection module detects the close-up picture of the truck by adopting a deep learning model, accurately positions the position of the license plate of the truck and cuts out the close-up picture of the license plate.
Further, the carriage handwritten license plate detection module is used for accurately positioning the position of the handwritten license plate of the boxcar when the license plate sketch does not exist or the license plate information extracted from the license plate sketch is incomplete, and intercepting the close-up image of the handwritten license plate of the boxcar.
Further, the text detection module is used for performing text detection on the input license plate close-up image or the carriage handwritten license plate close-up image to obtain the position information of the text.
Further, the character segmentation module is used for segmenting the text into single characters according to the position information of the text obtained by the text detection module, so as to obtain the position information of the single characters.
Furthermore, the license plate information output module comprises a license plate information extraction module, a license plate information combination module in signal connection with the license plate information extraction module, and a license plate information display module in signal connection with the license plate information combination module, the license plate information extraction module is in signal connection with an OCR character detection module, and the license plate information extraction module is in signal connection with a carriage handwriting license plate detection module.
Furthermore, the license plate information extraction module is used for screening and filtering computer characters output by the OCR character recognition module, eliminating special characters in character data to obtain effective license plate information, extracting license plate information through a preset license plate number rule, and enabling all information capable of extracting license plates to enter the license plate information display module; if the whole license plate information cannot be extracted, locking the key word information extracted from the close-up image of the license plate, feeding back the information to the carriage handwritten license plate detection module, then repeating the steps to obtain the character information of the carriage handwritten license plate, extracting the key information according to the carriage handwritten license plate information, recombining according to the previously locked key information, and inputting the recombined information into the license plate information combination module;
the license plate information combination module obtains complete information of the license plate through keyword matching and combination;
and the license plate information display module is used for displaying the obtained license plate information.
Through the OCR character recognition module, according to the single character position information obtained by the character segmentation module, the deep learning model is adopted for extracting characters, and the single characters are accurately converted into computer characters. The OCR character recognition module outputs computer characters to be screened and filtered, special characters in character data are removed to obtain effective license plate information, license plate number rules are formulated in advance to extract license plate information, and all license plate information capable of being extracted enters a license plate information display module. And if the whole information of the license plate cannot be extracted, locking the key word information extracted from the close-up image of the license plate, feeding back the information to the carriage handwritten license plate detection module, repeating the steps to obtain the character information of the carriage handwritten license plate, extracting the key information according to the carriage handwritten license plate information, recombining the key information according to the locked key information, and inputting the recombined information into the license plate information combination module.
The invention relates to a combined recognition system of a truck license plate and a carriage handwritten license plate, which has the following basic working principle: after a user selects a picture, the system positions the position of a truck in the picture and intercepts the truck through a deep learning network, then license plate detection is carried out on a special-writing picture of the truck, if the license plate is detected, the license plate is intercepted, a text region is obtained through text detection, then the text region is subjected to character segmentation to obtain the position information of a single character, then characters of the picture are converted into computer characters through an OCR character recognition module according to the position information of the single character, license plate information is extracted through a preset license plate number rule, and all information capable of extracting the license plate enters a license plate information display module. And if the whole information of the license plate cannot be extracted, locking the information which accords with the license plate number rule and feeding back the information to the carriage handwritten license plate detection module, then repeating the steps to obtain the character information of the carriage handwritten license plate, extracting the key information according to the carriage handwritten license plate information, recombining the key information according to the locked key information, and matching and combining the recombined information by using the key words to obtain the complete information of the license plate. And then the obtained license plate information is displayed through a license plate information display module. If the license plate cannot be detected, the handwritten license plate of the carriage is directly detected, the handwritten license plate is intercepted, a text region is obtained through text detection, then the text region is subjected to character segmentation to obtain the position information of a single character, then the characters of the picture are converted into computer characters through an OCR character recognition module according to the position information of the single character, then the license plate information is extracted through a preset license plate number rule, and all information capable of extracting the license plate enters a license plate information display module. The license plate information module displays the license plate information.
In the embodiment, the combination recognition system of the wagon license plate and the carriage handwritten license plate comprises a picture input module, a vehicle detection module, a license plate detection module, a carriage handwritten license plate detection module, a text detection module, a character segmentation module, an OCR character recognition module and a license plate information output module; through the matching among the modules, the license plate of the truck is recognized, the character information which can be extracted and accords with the license plate enters the license plate information display module, and the handwritten license plate of the carriage is recognized under the condition that the license plate cannot be positioned or the information extracted by the license plate is incomplete, so that the license plate covering and carriage font blurring of part of the truck are avoided, and the carriage handwritten license plate recognition and the license plate recognition are combined; the problems of low recognition rate and low accuracy in the detection of the license plate of the truck are solved, and traffic managers can be assisted to better supervise and enforce the truck; the safety and reliability of the system work are guaranteed, and meanwhile simplicity and practicability of installation can be achieved.
The working principle is as follows: after a user selects a picture, the system positions the position of a truck in the picture and intercepts the truck through a deep learning network, then license plate detection is carried out on a special-writing picture of the truck, if the license plate is detected, the license plate is intercepted, a text region is obtained through text detection, then the text region is subjected to character segmentation to obtain the position information of a single character, then characters of the picture are converted into computer characters through an OCR character recognition module according to the position information of the single character, license plate information is extracted through a preset license plate number rule, and all information capable of extracting the license plate enters a license plate information display module. And if the whole information of the license plate cannot be extracted, locking the information which accords with the license plate number rule and feeding back the information to the carriage handwritten license plate detection module, then repeating the steps to obtain the character information of the carriage handwritten license plate, extracting the key information according to the carriage handwritten license plate information, recombining the key information according to the locked key information, and matching and combining the recombined information by using the key words to obtain the complete information of the license plate. And then the obtained license plate information is displayed through a license plate information display module. If the license plate cannot be detected, the handwritten license plate of the carriage is directly detected, the handwritten license plate is intercepted, a text region is obtained through text detection, then the text region is subjected to character segmentation to obtain the position information of a single character, then the characters of the picture are converted into computer characters through an OCR character recognition module according to the position information of the single character, then the license plate information is extracted through a preset license plate number rule, and all information capable of extracting the license plate enters a license plate information display module. The license plate information module displays the license plate information.
The number of devices and the scale of the processes described herein are intended to simplify the description of the invention, and applications, modifications and variations of the invention will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides a freight train license plate combines identification system with carriage license plate of writing by hand which characterized in that includes:
the system comprises a picture input module, a vehicle detection module in signal connection with the picture input module, a license plate detection module in signal connection with the vehicle detection module, a text detection module in signal connection with the license plate detection module, a character segmentation module in signal connection with the text detection module, an OCR character detection module in signal connection with the character segmentation module and a license plate information output module in signal connection with the OCR character detection module;
the license plate information output module is in signal connection with a carriage handwriting license plate detection module, and the carriage handwriting license plate detection module is in signal connection with a license plate detection module.
2. The combination of a license plate of a truck and a handwritten license plate in a carriage as claimed in claim 1, wherein said picture input module is used for a user to select a picture to be detected;
the vehicle detection module is used for detecting the vehicle in the picture, positioning the vehicle and cutting out a close-up image of the truck;
the license plate detection module is used for detecting and positioning a license plate of a truck;
the carriage handwritten license plate detection module is used for detecting and positioning the handwritten license plate of the wagon carriage;
the text detection module is used for detecting and positioning a text position in a license plate and detecting and positioning a text position of a carriage handwritten license plate;
the character segmentation module is used for segmenting characters at the positions of the characters of the positioned license plate and is also used for segmenting the characters of the positioned handwritten license plate in the car;
the OCR character detection module is used for speaking the segmented characters to perform OCR character recognition and converting the picture characters into computer characters;
the license plate information output module is used for extracting the license plate information of the vehicle from the computer characters and displaying the license plate information.
3. The system of claim 1, wherein the vehicle detection module is configured to perform vehicle detection and localization using deep learning on the image, and to capture a close-up image of the vehicle according to the position of the vehicle.
4. The system of claim 1, wherein the license plate detection module detects a close-up image of the vehicle by using a deep learning model, locates the position of the vehicle license plate accurately, and captures the close-up image of the vehicle license plate.
5. The combination recognition system for the license plate of the truck and the handwritten license plate of the carriage as claimed in claim 1, wherein the carriage handwritten license plate detection module is used for accurately positioning the position of the handwritten license plate of the truck carriage when the license plate close-up image does not exist or the license plate information extracted from the license plate close-up image is incomplete, and intercepting the close-up image of the handwritten license plate of the carriage.
6. The system of claim 1, wherein the text detection module is configured to perform text detection on the input license plate close-up image or the carriage handwritten license plate close-up image to obtain location information of the text.
7. The combination of a license plate of a truck and a handwritten license plate in a carriage as claimed in claim 1, wherein said character segmentation module is used for segmenting the text into single words according to the position information of the text obtained by the text detection module, so as to obtain the position information of the single words.
8. The system of claim 1, wherein the license plate information output module comprises a license plate information extraction module, a license plate information combination module in signal connection with the license plate information extraction module, and a license plate information display module in signal connection with the license plate information combination module, the license plate information extraction module is in signal connection with an OCR character detection module, and the license plate information extraction module is in signal connection with a compartment handwritten license plate detection module.
9. The combination recognition system of the wagon license plate and the hand-written carriage license plate of claim 8, wherein the license plate information extraction module is used for screening and filtering computer characters output by the OCR character recognition module, eliminating special characters in character data to obtain effective license plate information, extracting license plate information through a preset license plate number rule, and enabling all information capable of extracting the license plate to enter the license plate information display module; if the whole license plate information cannot be extracted, locking the key word information extracted from the close-up image of the license plate, feeding back the information to the carriage handwritten license plate detection module, then repeating the steps to obtain the character information of the carriage handwritten license plate, extracting the key information according to the carriage handwritten license plate information, recombining according to the previously locked key information, and inputting the recombined information into the license plate information combination module;
the license plate information combination module obtains complete information of the license plate through keyword matching and combination;
and the license plate information display module is used for displaying the obtained license plate information.
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