CN108182435A - Licence plate detection identification device after a kind of vehicle duplicate rows character of view-based access control model identification - Google Patents
Licence plate detection identification device after a kind of vehicle duplicate rows character of view-based access control model identification Download PDFInfo
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- CN108182435A CN108182435A CN201810033653.8A CN201810033653A CN108182435A CN 108182435 A CN108182435 A CN 108182435A CN 201810033653 A CN201810033653 A CN 201810033653A CN 108182435 A CN108182435 A CN 108182435A
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- 238000001514 detection method Methods 0.000 title claims description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 230000011218 segmentation Effects 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 7
- 238000007781 pre-processing Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 239000005043 ethylene-methyl acrylate Substances 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G06V20/63—Scene text, e.g. street names
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/26—Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion
- G06V10/267—Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion by performing operations on regions, e.g. growing, shrinking or watersheds
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/14—Image acquisition
- G06V30/148—Segmentation of character regions
- G06V30/153—Segmentation of character regions using recognition of characters or words
-
- 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
Abstract
The present invention relates to licence plates after a kind of vehicle duplicate rows character of view-based access control model identification to detect identification device, and the present invention includes infrared sensor and is used to detect the vehicle of monitoring area, and camera module is driven to carry out license plate information acquisition after vehicle；Camera module, for the rear license plate information of the vehicle of acquisition to be reached vehicle identification module, for receiving the recognition result of vehicle identification module and display module being driven to show；Result for identifying the rear license plate information of vehicle, and is sent to camera module by vehicle identification module；Display module, for showing the rear license plate information of vehicle.The configuration of the present invention is simple, it is of low cost, it is highly practical, simple operation, strong applicability, licence plate and car plate are that the licence plate of the vehicle of two line characters is identified after being directed to only, can be further used for detecting and identifying more complicated duplicate rows character car plate, the control and monitoring to only rear licence plate vehicle are improved, more improve intelligent traffic management system.
Description
Technical field
The present invention relates to licence plate detection identification devices after a kind of vehicle duplicate rows character of view-based access control model identification, belong to car plate knowledge
Other field.
Background technology
When going on a journey in daily life, more and more people select electric vehicle or motorcycle.Electric vehicle be it is a kind of comfortable,
Economic and environmentally protective modern transportation tool.It is a kind of modern production that can meet hommization demand, as short
For the Private Traffic tool of distance, electric vehicle has the advantages that other vehicles are irreplaceable --- it is laborsaving, it is convenient, and it is real
With, non-exhaust emission, noiseless interference etc..Electric vehicle is power consumption, belongs to non power driven vehicle, and motorcycle is oil consumption, is belonged to
Motor vehicles, the two go on a journey for short distance all very convenient.Both vehicles generally only rear license plate, and license plate is double
Character, the single character different from automobile, the size of car plate and the size of character are also different.Due to present road
Upper electric vehicle and motorcycle are more and more universal, and safety problem is also following, it may appear that many electric vehicles, motorcycle travel in violation of rules and regulations
And the phenomenon that can not preventing in time.
Now, rapidly, License Plate Identification also accounts in intelligent traffic management for the intelligent management development of traffic
According to a critically important part.The license plate identification of automobile has been popularized, electric vehicle, motorcycle license plate identification also seem particularly heavy
It will.
Invention content
The present invention provides licence plate detection identification device after a kind of vehicle duplicate rows character of view-based access control model identification, for solving
Electric vehicle, motorcycle etc. only have rear licence plate and are the car plate detection of duplicate rows character licence vehicle and identification problem.
The technical scheme is that：Licence plate detection identification device after a kind of vehicle duplicate rows character of view-based access control model identification,
Including infrared sensor 1, camera module 2, vehicle identification module 3, display module 4；
The infrared sensor 1 is mounted on vehicle monitoring region, and infrared sensor 1 is connect with camera module 2, camera module
2 connect with vehicle identification module 3, display module 4；
Infrared sensor 1, for detecting the vehicle of monitoring area, and drive camera module 2 carry out vehicle after license plate information adopt
Collection；
Camera module 2 for the rear license plate information of the vehicle of acquisition to be reached vehicle identification module 3, is known for receiving vehicle
The recognition result of other module 3 simultaneously drives display module 4 to show；
Result for identifying the rear license plate information of vehicle, and is sent to camera module 2 by vehicle identification module 3；
Display module 4, for showing the rear license plate information of vehicle.
The camera module 2 include chip VC0758, camera 5, resistance R1, R2, R3, R4, R5, R6, capacitance C1,
C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, crystal oscillator Y1；
The pin EMAC of its chips VC0758 is connect with internet, for the information captured to be reached in real time by internet
Vehicle identification module 3；The pin COM of chip VC0758 is connect with one end of capacitance C1, the other end and resistance R1, the electricity of capacitance C1
Hold one end after C2 parallel connections, infrared sensor 1 connects, the other end ground connection after resistance R1, capacitance C2 parallel connections, arrival monitoring area
Vehicle triggering infrared sensor 1, rubescent outer sensor 1 drives the rear license plate information of vehicle that camera module 2 acquires；
The pin C0 of chip VC0758 is connect with one end of capacitance C5, resistance R2, pin C1 and capacitance C6, the electricity of chip VC0758
One end connection of R3 is hindered, the pin C2 of chip VC0758 is connect with one end of capacitance C7, resistance R4, the pin C3 of chip VC0758
It being connect with one end of capacitance C8, resistance R5, the pin C4 of chip VC0758 is connect with one end of capacitance C9, resistance R6, resistance R2,
The other end connection camera 5 of R3, R4, R5, R6, camera 5, which is realized, captures function, the other end of capacitance C5, C6, C7, C8, C9
It is grounded；The pin HDMI connections display module 4 of chip VC0758；The pin GND ground connection of chip VC0758, pin VCC and electricity
Hold one end after C3, C4 parallel connection and connect voltage, the other end ground connection after capacitance C3, C4 parallel connection；The pin of chip VC0758
UART0 and UART1 is connect respectively with the both ends after crystal oscillator Y1 and capacitance C10, C11 parallel connection, and the intermediate connection of capacitance C10, C11 connect
Ground.
The vehicle identification module 3, the rear license plate information for identifying vehicle are specially：For by board after the vehicle obtained
Row image preprocessing is shone into, horizontal segmentation is carried out to character after image preprocessing, is two rows by Character segmentation, respectively to two row words
Symbol carries out vertical segmentation, and finally the single character being partitioned into is identified.
The beneficial effects of the invention are as follows：Simple in structure, of low cost, highly practical, simple operation, strong applicability can be with
It is that the licence plate of the vehicle of two line characters is identified for licence plate and car plate after only, can be further used for detecting and identifying more multiple
Miscellaneous duplicate rows character car plate improves the control and monitoring to only rear licence plate vehicle, more improves intelligent traffic management system.
Description of the drawings
Fig. 1 is the circuit block diagram of the present invention；
Fig. 2 is two line character of the car plate identification of the present invention and cutting procedure figure；
In figure respectively marked as：1- infrared sensors, 2- camera modules, 3- vehicle identification modules, 4- display modules, 5- camera shootings
Head.
Specific embodiment
Embodiment 1：As shown in Figs. 1-2, licence plate detection identification device after a kind of vehicle duplicate rows character of view-based access control model identification,
Including infrared sensor 1, camera module 2, vehicle identification module 3, display module 4；
The infrared sensor 1 is mounted on vehicle monitoring region, and infrared sensor 1 is connect with camera module 2, camera module
2 connect with vehicle identification module 3, display module 4；
Infrared sensor 1, for detecting the vehicle of monitoring area, and drive camera module 2 carry out vehicle after license plate information adopt
Collection；
Camera module 2 for the rear license plate information of the vehicle of acquisition to be reached vehicle identification module 3, is known for receiving vehicle
The recognition result of other module 3 simultaneously drives display module 4 to show；
Result for identifying the rear license plate information of vehicle, and is sent to camera module 2 by vehicle identification module 3；
Display module 4, for showing the rear license plate information of vehicle.
It is possible to further set the camera module 2 include chip VC0758, camera 5, resistance R1, R2, R3,
R4, R5, R6, capacitance C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, crystal oscillator Y1；The pin of its chips VC0758
EMAC is connect with internet, for the information captured to be reached vehicle identification module 3 by internet in real time；Chip VC0758
Pin COM connect with one end of capacitance C1, one end, infrared biography after the other end of capacitance C1 is in parallel with resistance R1, capacitance C2
Sensor 1 connects, the other end ground connection after resistance R1, capacitance C2 parallel connections, reaches the vehicle triggering infrared sensor 1 of monitoring area,
Rubescent outer sensor 1 drives the rear license plate information of vehicle that camera module 2 acquires；The pin C0 and capacitance of chip VC0758
One end connection of C5, resistance R2, the pin C1 of chip VC0758 are connect with one end of capacitance C6, resistance R3, chip VC0758's
Pin C2 is connect with one end of capacitance C7, resistance R4, and the pin C3 of chip VC0758 is connect with one end of capacitance C8, resistance R5,
The pin C4 of chip VC0758 is connect with one end of capacitance C9, resistance R6, and the other end connection of resistance R2, R3, R4, R5, R6 are taken the photograph
As head 5, camera 5, which is realized, captures function, and the other end of capacitance C5, C6, C7, C8, C9 are grounded；The pin of chip VC0758
HDMI connections display module 4；The pin GND ground connection of chip VC0758, pin VCC are connect with one end after capacitance C3, C4 parallel connection
Voltage is connect, the other end ground connection after capacitance C3, C4 parallel connection；The pin UART0 and UART1 of chip VC0758 respectively with crystal oscillator Y1 and
Both ends connection after capacitance C10, C11 parallel connection, the intermediate connection ground connection of capacitance C10, C11.
It is possible to further set the vehicle identification module 3, the rear license plate information for identifying vehicle is specially：With
Licence plate carries out image preprocessing after by the vehicle obtained, horizontal segmentation is carried out to character after image preprocessing, by Character segmentation
For two rows, vertical segmentation is carried out to two line characters respectively, finally the single character being partitioned into is identified.
The present invention operation principle be：
Vehicle detection is needed for the environment that use the device, such as crossroad, cell inlet and outlet, parking lot etc.
Place sets the general only rear car plate such as a monitoring area, monitoring area monitoring battery-operated motor cycle, motorcycle and car plate is double
The vehicle of line character installs infrared sensor 1 on the road in monitoring area, when having vehicle by monitoring area and be triggered to
During infrared sensor 1, infrared sensor 1 can transfer signals to the pin COM of the chip VC0758 of camera acquisition module 2
On, camera 5 is notified to have vehicle by carrying out candid photograph work with this.Chip VC0758 receives C0, C1, C2, C3, C4 after signal
Pin control camera 5 to after the vehicle of monitoring area licence plate capture, wherein resistance R2, R3, R4, R5, R6 rise
To the effect of current limliting, camera 5 is protected.And the time interval that camera works when capturing is by the pin UART0 of chip VC0758
It is controlled with UART1, the two pins are connect respectively with the both ends after crystal oscillator Y1 and capacitance C10, C11 parallel connection, and camera shooting is controlled with this
How long head is each captured primary.Chip VC0758 pin EMAC connection Internet after vehicle license are captured, will be clapped
To image vehicle identification module 3 is transferred to by Internet.The technology of view-based access control model identification locates license board information in advance
Reason, pretreated image information carries out the identification of horizontal direction to it and character is split, according to character feature, water
It is flat to identify and obtain two line character strings after dividing, vertical segmentation is carried out to this two line characters string respectively again, it will by character feature
It is divided into single character, and finally single character is identified, and the character to prestore for being used for vehicle identification module 3 is believed
Breath gradually identifies that either letter or number, the character that will identify that are transferred to chip VC0758 to Chinese character by Internet, and
LCD display is connected to by pin HDMI, the two row characters on license plate finally identified are shown.
The specific embodiment of the present invention is explained in detail above in conjunction with figure, but the present invention is not limited to above-mentioned realities
Mode is applied, it within the knowledge of a person skilled in the art, can also be in the premise for not departing from present inventive concept
It is lower that various changes can be made.
Claims (3)
1. a kind of licence plate detection identification device after vehicle duplicate rows character of view-based access control model identification, it is characterised in that：Including infrared biography
Sensor（1）, camera module（2）, vehicle identification module（3）, display module（4）；
The infrared sensor（1）Mounted on vehicle monitoring region, infrared sensor（1）With camera module（2）Connection, camera shooting
Head module（2）With vehicle identification module（3）, display module（4）Connection；
Infrared sensor（1）, for detecting the vehicle of monitoring area, and drive camera module（2）Licence plate is believed after carrying out vehicle
Breath acquisition；
Camera module（2）, for the rear license plate information of the vehicle of acquisition to be reached vehicle identification module（3）, for receiving vehicle
Identification module（3）Recognition result and drive display module（4）Display；
Vehicle identification module（3）, for identifying the rear license plate information of vehicle, and result is sent to camera module（2）；
Display module（4）, for showing the rear license plate information of vehicle.
2. licence plate detection identification device, feature after the vehicle duplicate rows character of view-based access control model identification according to claim 1
It is：The camera module（2）Including chip VC0758, camera（5）, resistance R1, R2, R3, R4, R5, R6, capacitance C1,
C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, crystal oscillator Y1；
The pin EMAC of its chips VC0758 is connect with internet, for the information captured to be reached in real time by internet
Vehicle identification module（3）；The pin COM of chip VC0758 is connect with one end of capacitance C1, the other end and resistance R1 of capacitance C1,
One end, infrared sensor after capacitance C2 parallel connections（1）Connection, the other end ground connection after resistance R1, capacitance C2 parallel connections, reaches monitoring
The vehicle triggering infrared sensor in region（1）, rubescent outer sensor（1）Drive camera module（2）The rear board of the vehicle of acquisition
According to information；
The pin C0 of chip VC0758 is connect with one end of capacitance C5, resistance R2, pin C1 and capacitance C6, the electricity of chip VC0758
One end connection of R3 is hindered, the pin C2 of chip VC0758 is connect with one end of capacitance C7, resistance R4, the pin C3 of chip VC0758
It being connect with one end of capacitance C8, resistance R5, the pin C4 of chip VC0758 is connect with one end of capacitance C9, resistance R6, resistance R2,
The other end connection camera of R3, R4, R5, R6（5）, camera（5）It realizes and captures function, capacitance C5, C6, C7, C8, C9's is another
One end is grounded；The pin HDMI connection display modules of chip VC0758（4）；The pin GND ground connection of chip VC0758, pin
VCC connect with one end after capacitance C3, C4 parallel connection and connects voltage, the other end ground connection after capacitance C3, C4 parallel connection；Chip VC0758's
Pin UART0 and UART1 are connect respectively with the both ends after crystal oscillator Y1 and capacitance C10, C11 parallel connection, and the centre of capacitance C10, C11 connect
Line is grounded.
3. licence plate detection identification device, feature after the vehicle duplicate rows character of view-based access control model identification according to claim 1
It is：The vehicle identification module（3）, the rear license plate information for identifying vehicle is specially：For by board after the vehicle obtained
Row image preprocessing is shone into, horizontal segmentation is carried out to character after image preprocessing, is two rows by Character segmentation, respectively to two row words
Symbol carries out vertical segmentation, and finally the single character being partitioned into is identified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810033653.8A CN108182435B (en) | 2018-01-15 | 2018-01-15 | Vehicle double-row character rear license plate detection and recognition device based on visual recognition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810033653.8A CN108182435B (en) | 2018-01-15 | 2018-01-15 | Vehicle double-row character rear license plate detection and recognition device based on visual recognition |
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| Publication Number | Publication Date |
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| CN108182435A true CN108182435A (en) | 2018-06-19 |
| CN108182435B CN108182435B (en) | 2024-04-12 |
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| CN201810033653.8A Active CN108182435B (en) | 2018-01-15 | 2018-01-15 | Vehicle double-row character rear license plate detection and recognition device based on visual recognition |
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