CN106652517A - Front-automobile starting reminding method and front-automobile starting reminding system based on camera - Google Patents
Front-automobile starting reminding method and front-automobile starting reminding system based on camera Download PDFInfo
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- CN106652517A CN106652517A CN201610819863.0A CN201610819863A CN106652517A CN 106652517 A CN106652517 A CN 106652517A CN 201610819863 A CN201610819863 A CN 201610819863A CN 106652517 A CN106652517 A CN 106652517A
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- car plate
- front truck
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
- G08G1/096791—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is another vehicle
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Abstract
The invention discloses a front-automobile starting reminding method and a front-automobile starting reminding system based on a camera. The method comprises the steps of determining a fact that a local automobile is in a waiting state; identifying a first license plate position of the front automobile in the camera at a first time point; identifying a second license plate position of the front automobile in the camera at a second time point; and reminding a driver of starting of the front automobile according to the first license plate position and the second license plate position. According to the method and the system, real-time analysis is performed by means of front-automobile license plate information which is acquired based on the camera when a fact that the automobile is in the waiting state is detected; and when starting of the front automobile is detected, the driver is reminded in time, thereby realizing benefit for in-time starting reaction of the automobile driver, and improving passing efficiency of a road. Furthermore the method and the system can be quickly used in on-automobile equipment with the camera, thereby saving production cost through utilizing local materials, and furthermore improving front-automobile starting reminding efficiency.
Description
Technical field
The present invention relates to the technical field in vehicle assistant drive field, more particularly, to it is a kind of based on camera before
The method and system that car starting is reminded.
Background technology
With the progress of science and technology, intellectuality has become the heat subject of every field research now, but adjoint
Economic and science and technology development, the vehicle travelled on urban road is also more and more, and the traffic jam issue in city is extensive
Perplex the life to people, how to also become field of traffic for the unobstructed operation of road using Intelligent control technology and extensively close
The problem of note.
Front truck starting based reminding method belongs to automobile assistant driving field, and in congested link or at crossing traffic lights are waited
When, driver needs the start and stop state for noting front truck at any time, to ensure smooth flow in order, but in very long uninteresting wait, driver
Divert attention unavoidably so that front wagon flow situation could not be noted in time, be further exacerbated by congestion in road, it is also possible to cause because not timely
The car rear-end phenomenon that starting brings.Therefore, when there is car in front, front truck has been started, or front is bright without green light during car
Rise, when driver does not make respective reaction, need system to be automatically reminded to driver and start vehicle, it is to avoid rear car is urged, and improves road
Traffic efficiency.Therefore there is provided a kind of front truck starting based reminding method of automation, current vehicle can in time remind driver, have when starting
There is higher practical value.
In prior art, Chinese Patent Application No. is：201510453118.4, it is entitled：One kind is based on ultrasonic radar
Front truck starting based reminding method and system, be a kind of method found range based on front truck, by the measurement of ultrasonic radar sensor with
The relative distance of front truck, recycles this relative distance information to judge the start and stop dynamic of front truck, and according to result of determination prompting department
Machine.But, in this scenario, want relatively accurately to obtain has higher wanting to the precision of sensor with front truck relative distance
Ask, if used on mobile unit, such as on recorder, undoubtedly and can greatly increase cost of manufacture, practicality is not strong.
Chinese Patent Application No. is：201510164515.X, it is entitled：A kind of inexpensive parking waiting based on Android is driven
System for prompting is sailed, is a kind of method based on moving object detection, the program is using the video figure in front of camera collection vehicle
Picture, when judging that this car is in parking waiting state, by judging video image in target whether move to judge that front truck is
The no traveling that started to walk.But, the program using moving target detection method, due to be difficult distinguish motion be on earth before
Car or other targets, easily cause erroneous judgement, and precision is not high；And the accuracy to be judged by video by raising,
Cost is undoubtedly increased in the process of video data, and it is also to need certain hour to carry out process to video data before vehicle
, this detection scheme can also delay system reminder time, be unfavorable for that user is judged in time.
Therefore it provides a kind of simple and direct, accurate, inexpensive front truck starting based reminding method is that this area is urgently to be resolved hurrily asking
Topic.
The content of the invention
In view of this, the invention provides a kind of method and system of the front truck starting prompting based on camera, solve
The front truck starting prompting scheme degree of accuracy is low in prior art, cost of manufacture is high and reminds the problem for postponing.
In order to solve above-mentioned technical problem, the present invention proposes a kind of method that front truck starting based on camera is reminded, bag
Include：
Determine that this car is waited for；
The first car plate position of front truck in very first time identification camera；
The second car plate position of front truck in the second time identification camera；
Started to walk according to the first car plate position and the second car plate position reminding front truck.
Further, wherein, the first car plate position using car plate vertical seat of the ad-hoc location in the camera
Mark represents that ordinate of the second car plate position using the ad-hoc location of car plate in the camera is represented.
Further, wherein, the ad-hoc location of car plate for car plate center.
Further, wherein, the very first time and second time are the phase of the car plate of front truck in identification camera
The adjacent moment.
Further, wherein, it is described to be risen according to the first car plate position and the second car plate position reminding front truck
Step includes：
In the case where the first car plate position is more than threshold value with the difference of the second car plate position, front truck is reminded to rise
Step.
Further, wherein, the first car plate position and the second car plate position are with camera image region
Coordinate of the middle any point as origin.
On the other hand, the present invention also provides the system that a kind of front truck starting based on camera is reminded, including：
Wait state determining module, for determining that this car is waited for；
Car plate location identification module, for the first car plate position of the front truck in very first time identification camera；And
Second car plate position of front truck in second time identification camera；
Prompting module, for being started to walk according to the first car plate position and the second car plate position reminding front truck.
Further, wherein, the first car plate position using car plate vertical seat of the ad-hoc location in the camera
Mark represents that ordinate of the second car plate position using the ad-hoc location of car plate in the camera is represented.
Further, wherein, the ad-hoc location of car plate for car plate center.
Further, wherein, the very first time and second time are the phase of the car plate of front truck in identification camera
The adjacent moment.
Further, wherein, the prompting module, in the first car plate position and the second car plate position
Difference more than in the case of threshold value, start to walk by prompting front truck.
Further, wherein, the first car plate position and the second car plate position are with camera image region
Coordinate of the middle any point as origin.
Compared with prior art, the method and system that the front truck starting based on camera of the invention is reminded, realize as
Under beneficial effect：
(1) method and system that the front truck starting based on camera of the present invention is reminded, can be used in vehicle-mounted auxiliary
On steer, divided in real time based on camera acquisition front truck license board information when vehicle is waited for using being detected
Analysis, detects front truck starting and is reminded driver in time, is conducive to vehicle driver to make initiative reaction in time, so as to improve
Road efficiency.
(2) method and system that the front truck starting based on camera of the present invention is reminded, are captured based on camera
Front truck license board information sets up reference axis, and the coordinate information of comparative analysis front truck car plate central point to obtain the travel condition of front truck
Driver is reminded in time, and precision is higher compared with existing product, practicality is higher.
(3) method and system that the front truck starting based on camera of the present invention is reminded, are obtained based on camera
The license board information of front truck is analyzed, and can rapidly be applied in the mobile unit with camera, saving of gathering materials on the spot
The cost of production additionally provides the efficiency that front truck starting is reminded.
Certainly, implement the present invention arbitrary product must not specific needs reach all the above technique effect simultaneously.
By referring to the drawings to the present invention exemplary embodiment detailed description, the present invention further feature and its
Advantage will be made apparent from.
Description of the drawings
It is combined in the description and the accompanying drawing of the part that constitutes specification shows embodiments of the invention, and even
It is used to together explain the principle of the present invention with its explanation.
Fig. 1 is the flow process of an alternative embodiment of the method that the front truck starting based on camera of the present invention is reminded
Schematic diagram；
Fig. 2 is an optional enforcement of the method that the front truck starting based on camera described in the embodiment of the present invention 2 is reminded
The schematic flow sheet of example；
Fig. 3 is the structure of an alternative embodiment of the system that the front truck starting based on camera of the present invention is reminded
Schematic diagram；
Fig. 4 is that the utilization car plate detection described in the embodiment of the present invention 1 determines front truck car plate position in front truck image
Schematic flow sheet；
Fig. 5 is to detect the knot of determination front truck car plate position in front truck image using car plate described in the embodiment of the present invention 1
Structure schematic diagram.
Specific embodiment
Describe the various exemplary embodiments of the present invention in detail now with reference to accompanying drawing.It should be noted that：Unless had in addition
Body illustrates that the part and the positioned opposite of step, numerical expression and numerical value for otherwise illustrating in these embodiments does not limit this
The scope of invention.
It is below illustrative to the description only actually of at least one exemplary embodiment, never as to the present invention
And its any restriction applied or use.
For technology, method and apparatus may be not discussed in detail known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered a part for specification.
In all examples shown here and discussion, any occurrence should be construed as merely exemplary, and not
It is as restriction.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further discussed in subsequent accompanying drawing.
Embodiment 1
As shown in figure 1, an optional enforcement of the method reminded for the front truck starting based on camera of the present invention
The schematic flow sheet of example.The present invention obtains front truck license board information to carry out being accurately positioned simultaneously for front truck starting traveling using camera
Vehicle driver is reminded in time, reaches prompting effect accurately and timely.The front truck based on camera described in the present embodiment rises
The method that step is reminded is comprised the following steps：
Step 101, determine that this car is waited for.Can be set according to GPS, velocity sensor, acceleration transducer etc.
It is standby to detect vehicle and be waited for, and enable vehicle camera and identify the front truck image for including front truck license board information.
Step 102, in the very first time identification camera front truck the first car plate position.Determined using car plate detection described
Position of the front truck car plate in the front truck image simultaneously sets up reference axis and determines the first car plate position according to the front truck image
Put.
Wherein, illustrate that detection determines the content of the front truck car plate position with reference to Fig. 4, before detecting that determination is described using car plate
Car car plate position in the front truck image can adopt the steps：
Step 110, the detection zone arranged in the front truck image that photographs of identification camera, acquiescence remove it is described before
The region of left and right 1/4 in car image, obtains the zone line of the front truck image, and as described detection zone recycles character
The method detection of saltus step determines the car plate position in front truck image.
Step 111, to the detection zone in each pixel column carry out picture element scan from top to bottom, determine the detection
The pixel jump point of each pixel column in region.
Step 112, pixel column is ranked up based on pixel jump point quantity, chooses candidate's picture of predetermined number before sequence
Plain row.
Step 113, each candidate pixel row is scanned based on predetermined scan box, in determining each candidate pixel row
The distribution of the pixel jump point of each scan box；For the detection zone, by every in statistical analysis whole candidate pixel row
The distribution of the pixel jump point of individual scan box, determines that pixel jump point quantity exceedes predetermined number of hops threshold in the detection zone
One or more candidate license plate subregions of value.
Step 114, the method for employing projection carry out character cutting to the candidate license plate region, by the candidate license plate area
The non-license plate area that predetermined character cutting rule is not met in domain is filtered.
Step 115, the image correlated characteristic for extracting the candidate license plate region, including：Color of image feature and image line
Reason feature；
Based on the color of image feature in the candidate license plate region extracted, will not meet in the candidate license plate region
The non-license plate area of predetermined color decision rule is filtered；
Based on the image texture characteristic in the candidate license plate region extracted, will not meet in the candidate license plate region
The non-license plate area of predetermined texture discrimination rule is filtered.
Step 116, the candidate license plate region is repositioned based on described image correlated characteristic, determine license plate area
Position in the front truck image.Further, processed by the slant correction to candidate license plate region, it is ensured that car plate to the greatest extent may be used
Can be horizontal, so as to improve the accuracy of License Plate.
As shown in figure 5, detecting the knot for determining front truck car plate position in the front truck image for above-mentioned utilization car plate
Structure schematic diagram, in Figure 5, identification camera 501 shoots front truck image 502, and determines the car plate area using above-mentioned step
Position of the domain 503 in the front truck image 502.
Step 103, in the second time identification camera front truck the second car plate position.Determined using car plate detection described
Position of the front truck car plate in the front truck image simultaneously sets up reference axis and determines the second car plate position according to the front truck image
Put.
Step 104, started to walk according to the first car plate position and the second car plate position reminding front truck.According to described
First car plate position and the second car plate position reaction go out the situation whether car plate of front truck moves, and before judging accordingly
Whether car starts to walk to remind vehicle driver.
In the present embodiment, the camera under vehicle is waited for may recognize that without front truck license board information state
Under stop-light image.Current lane correspondence is determined with reference to current road information according to the stop-light image
Indicator lamp green light light after, send prompting.
The method that the front truck starting based on camera described in the present embodiment is reminded, based on camera front truck car plate letter is obtained
Breath is analyzed in real time, judges whether front truck has a starting by front truck car plate mobile message, and detecting when front truck is started to walk and
When remind driver, be conducive to vehicle driver to make initiative reaction in time, so as to improve road efficiency.
Embodiment 2
As shown in Fig. 2 one of the method for the front truck starting prompting based on camera described in the embodiment of the present invention 2 can
Select the schematic flow sheet of embodiment.The present embodiment further describe on the basis of embodiment 1 front truck car plate coordinate set up and
By judging to determine that front truck starting carries out state and the content reminded in time with predetermined threshold.Described in the present embodiment based on shooting
The method that the front truck starting of head is reminded is comprised the following steps that：
Step 201, determine that this car is waited for.
Step 202, enable vehicle camera and identify the front truck image for including front truck license board information.And with camera figure
As any point sets up reference axis as origin in region.
Step 203, in the very first time identification camera front truck the first car plate position, the first car plate position uses
Ordinate of the ad-hoc location of car plate in the camera is represented.
Step 204, in the second time identification camera front truck the second car plate position, the second car plate position uses car plate
Ordinate of the ad-hoc location in the camera represent.
Preferably, in step 203 and step 204 car plate ad-hoc location for car plate center.
The very first time and the adjacent moment that second time is the car plate of front truck in identification camera.Alternatively,
The time interval scope of the car plate of front truck is the 0.5-2 seconds in identification camera.
Step 205, in the case where the difference of the first car plate position and the second car plate position is more than threshold value, carry
Wake up and remind front truck starting.Wherein, the threshold range is 0.5-2.Car plate position difference illustrates the car plate position of front truck more than threshold value
Put and be moved, that is, front truck has been started to walk.
In the present embodiment, the method also includes：Receive and currently stored threshold value is replaced according to the default threshold value of user input
And preserve.
Step 206, identified without the new friendship of front truck license board information state based on the camera under vehicle is waited for
Logical indicator lamp image.
Step 207, the road information according to the stop-light image with reference to Current vehicle road occupying determine current vehicle
After the corresponding indicator lamp green light in road is lighted, prompting is sent.
Step 208, send vehicle start remind and detect the vehicle started to walk advance after close the camera
And front truck starting is reminded.
Step 209, send vehicle start remind after determine without vehicle start enter row information reach the scheduled time, close institute
State vehicle start to remind and the camera, wherein, the scheduled time scope is 1-10 minutes.
The method that the front truck starting based on camera described in the present embodiment is reminded, based on the front truck car plate that camera is captured
Information sets up reference axis, and the coordinate information of comparative analysis front truck car plate central point is reminded in time with the travel condition for obtaining front truck
Driver, precision is higher compared with existing product, practicality is higher.
Embodiment 3
As shown in figure 3, an optional enforcement of the system reminded for the front truck starting based on camera of the present invention
The structural representation of example.The front truck starting based on camera that the described system of this enforcement is used to implement in above-described embodiment is reminded
Method.The system of the front truck starting prompting of camera should be based on to be included：Wait state determining module 301, car plate location recognition
Module 302 and prompting module 303.
Wherein, the wait state determining module 301 connects with the phase lotus root of car plate location identification module 302, for determining this car
It is waited for.
The car plate location identification module 302 and the wait state determining module 301 and the phase lotus root of the prompting module 303
Connect, for the first car plate position of the front truck in very first time identification camera；And in the second time identification camera before
Second car plate position of car.
The prompting module 303 connects with the phase lotus root of the car plate location identification module 302, for according to the first car plate position
Put and the second car plate position reminding front truck starting；Wherein,
Ordinate of the first car plate position using the ad-hoc location of car plate in the camera represent, the second car plate
Ordinate of the position using the ad-hoc location of car plate in the camera is represented.
The ad-hoc location of car plate is the center of car plate.
The very first time and the adjacent moment that second time is the car plate of front truck in identification camera.Camera is known
The license plate image interval time scope of other front truck is the 0.5-2 seconds.
The prompting module 303, for being more than threshold with the difference of the second car plate position in the first car plate position
In the case of value, front truck starting is reminded.
The first car plate position and the second car plate position be using in camera image region any point as
The coordinate of origin.
Car plate location identification module 302, can be also used for the camera under being waited for based on vehicle, identify nothing
The new stop-light image of front truck license board information state.
The prompting module 303 is additionally operable to：
The corresponding indicator lamp of current lane is determined with reference to current road information according to the stop-light image green
After lamp is lighted, prompting is sent.
Further, the system also includes：Threshold value memory module 304, the threshold value memory module 304 and the prompting mould
Phase lotus root connects block 303, is used for：
The threshold value of receiving user's input is replaced currently stored threshold value and is preserved, wherein, the default threshold scope is
0.5-2。
Alternatively, the system also includes：First closedown module 305, first closedown module 305 and the prompting module
303 phase lotus roots connect, and are used for：
Send vehicle start remind and detect the vehicle started to walk advance after close the camera and prompting.
Alternatively, the system also includes：Second closedown module 306, second closedown module 306 and the prompting module
303 phase lotus roots connect, and are used for：
Send to be determined after vehicle start is reminded and reach the scheduled time without vehicle start, close the vehicle start remind and
The camera, wherein, the scheduled time is 1-10 minutes.
Each embodiment by more than, the method and system that the front truck starting based on camera of the present invention is reminded are deposited
Beneficial effect be：
(1) method and system that the front truck starting based on camera of the present invention is reminded, can be used in vehicle-mounted auxiliary
On steer, divided in real time based on camera acquisition front truck license board information when vehicle is waited for using being detected
Analysis, detects front truck starting and is reminded driver in time, is conducive to vehicle driver to make initiative reaction in time, so as to improve
Road efficiency.
(2) method and system that the front truck starting based on camera of the present invention is reminded, are captured based on camera
Front truck license board information sets up reference axis, and the coordinate information of comparative analysis front truck car plate central point to obtain the travel condition of front truck
Driver is reminded in time, and precision is higher compared with existing product, practicality is higher.
(3) method and system that the front truck starting based on camera of the present invention is reminded, are obtained based on camera
The license board information of front truck is analyzed, and can rapidly be applied in the mobile unit with camera, saving of gathering materials on the spot
The cost of production additionally provides the efficiency that front truck starting is reminded.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, device or computer program
Product.Therefore, the present invention can be using complete hardware embodiment, complete software embodiment or with reference to the reality in terms of software and hardware
Apply the form of example.And, the present invention can be adopted and wherein include the computer of computer usable program code at one or more
The computer program implemented in usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) is produced
The form of product.
Although being described in detail to some specific embodiments of the present invention by example, the skill of this area
Art personnel it should be understood that example above is merely to illustrate, rather than in order to limit the scope of the present invention.The skill of this area
Art personnel to above example it should be understood that can modify without departing from the scope and spirit of the present invention.This
Bright scope is defined by the following claims.
Claims (12)
1. a kind of method that front truck starting based on camera is reminded, it is characterised in that include：
Determine that this car is waited for；
The first car plate position of front truck in very first time identification camera；
The second car plate position of front truck in the second time identification camera；
Started to walk according to the first car plate position and the second car plate position reminding front truck.
2. the method that the front truck starting based on camera according to claim 1 is reminded, it is characterised in that first car
Memorial tablet is put the ordinate using the ad-hoc location of car plate in the camera and is represented, the second car plate position is specific using car plate
Ordinate of the position in the camera is represented.
3. the method that the front truck starting based on camera according to claim 2 is reminded, it is characterised in that car plate it is specific
Position is the center of car plate.
4. the method that the front truck starting based on camera according to claim 1 is reminded, it is characterised in that when described first
Between and second time be identification camera in front truck car plate adjacent moment.
5. the method that the front truck starting based on camera according to any one in claim 1-4 is reminded, its feature exists
In described to be included according to the first car plate position and the second car plate position reminding front truck starting：
In the case where the first car plate position is more than threshold value with the difference of the second car plate position, front truck starting is reminded.
6. the method that the front truck starting based on camera according to any one in claim 1-4 is reminded, its feature exists
In, the first car plate position and the second car plate position be using in camera image region any point as origin
Coordinate.
7. the system that a kind of front truck starting based on camera is reminded, it is characterised in that include：
Wait state determining module, for determining that this car is waited for；
Car plate location identification module, for the first car plate position of the front truck in very first time identification camera；And second
Second car plate position of front truck in time identification camera；
Prompting module, for being started to walk according to the first car plate position and the second car plate position reminding front truck.
8. the system that the front truck starting based on camera according to claim 7 is reminded, it is characterised in that first car
Memorial tablet is put the ordinate using the ad-hoc location of car plate in the camera and is represented, the second car plate position is specific using car plate
Ordinate of the position in the camera is represented.
9. the system that the front truck starting based on camera according to claim 8 is reminded, it is characterised in that car plate it is specific
Position is the center of car plate.
10. the system that the front truck starting based on camera according to claim 7 is reminded, it is characterised in that described first
Time and the adjacent moment that second time is the car plate of front truck in identification camera.
The system that the 11. front truck startings according to any one of claims of claim 7-10 based on camera are reminded, its feature
It is, the prompting module, for being more than the feelings of threshold value with the difference of the second car plate position in the first car plate position
Under condition, front truck starting is reminded.
The system that the 12. front truck startings according to any one of claims of claim 7-10 based on camera are reminded, its feature
Be, the first car plate position and the second car plate position be using in camera image region any point as origin
Coordinate.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111824151A (en) * | 2019-04-11 | 2020-10-27 | 比亚迪股份有限公司 | Method and device for prompting vehicle starting and vehicle |
| CN112200082A (en) * | 2020-10-10 | 2021-01-08 | 广州亚美智造科技有限公司 | Preceding vehicle starting identification method, device, equipment and storage medium |
| WO2023221848A1 (en) * | 2022-05-17 | 2023-11-23 | 华为技术有限公司 | Vehicle starting behavior prediction method and apparatus, storage medium, and program product |
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| CN111824151A (en) * | 2019-04-11 | 2020-10-27 | 比亚迪股份有限公司 | Method and device for prompting vehicle starting and vehicle |
| CN112200082A (en) * | 2020-10-10 | 2021-01-08 | 广州亚美智造科技有限公司 | Preceding vehicle starting identification method, device, equipment and storage medium |
| WO2023221848A1 (en) * | 2022-05-17 | 2023-11-23 | 华为技术有限公司 | Vehicle starting behavior prediction method and apparatus, storage medium, and program product |
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Application publication date: 20170510 |