CN107554403A - Based on prospect can identification car bulb autocontrol method and system - Google Patents
Based on prospect can identification car bulb autocontrol method and system Download PDFInfo
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- CN107554403A CN107554403A CN201710697282.9A CN201710697282A CN107554403A CN 107554403 A CN107554403 A CN 107554403A CN 201710697282 A CN201710697282 A CN 201710697282A CN 107554403 A CN107554403 A CN 107554403A
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Abstract
The present invention provide it is a kind of based on prospect can identification car bulb autocontrol method and system, can according to corresponding to running car foreground image the light and shade part of one dimensional histograms distribution relation, to differentiate the bright-dark degree of vehicle front environment, so as to carry out opening and closing automatically for light on this basis, can accurate judgement ambient light, avoid being influenceed and produced by junior or dust stratification erroneous judgement and fail to judge etc. reliability the problem of.
Description
Technical field
The present invention relates to light automatic control technology field, more particularly to it is a kind of based on prospect can identification car bulb
Autocontrol method and system.
Background technology
Most important current existing automatic light control system is exactly when headlamp switch is from " AUTO " shelves, passes through peace
The electronic components such as the photo resistance on the positions such as the back side of the room mirror of automobile, instrument board, according to the light in the external world
Line strength sends electric signal to ECU (Electronic Control Unit, electronic control unit) ECU, to notify ECU
Headlight, high-low beam whether are turned on and off, then switchs by the relay of ECU control car bulbs, switch light,
Such as run into the process of moving dark environment (such as vehicle is in night running) or suddenly dimmed environment (as entered tunnel
Road), headlight for vehicles will be automatically turned on, and headlight is closed automatically when bright and clear.
However, above-mentioned this automatic light control program has the following disadvantages：
1st, easily disturbed by junior：Automobile has experience junior unavoidably in traveling in the case of ambient light deficiency
Situation, the vehicle come is inversely sailed such as in tunnel and opens the stronger billboard of light is run into high beam, night running, this
Driver stills need car bulb unlatching preferably to see road conditions clearly in the case of kind, and traditional lamp light control system is difficult to differentiate
It these situations, can judge by accident so as to close light, trigger dangerous.
2nd, sensitivity and poor reliability：Automatic light control device of good performance should have very high sensitivity and reliable
Property, and the existing characteristic that the scheme controlled is realized by photosensitive component, is limited to photo resistance：It is affected by temperature greatly, easily
Influenceed by dust stratification, it is low to ultimately result in the sensitivity of device, poor reliability.
The content of the invention
It is an object of the invention to propose it is a kind of based on prospect can identification car bulb autocontrol method and be
System, can accurate judgement ambient light, avoid being influenceed and produced by junior or dust stratification the reliability such as judge by accident and fail to judge
Problem.
To achieve these goals, the present invention provide it is a kind of based on prospect can identification the car bulb side of automatically controlling
Method, comprise the following steps：
After automobile starts running, according to the foreground picture in front of default IMAQ rule automatic data collection running car
Picture；
The foreground image of collection is converted into one dimensional histograms；
Pixel quantity percentage p1 and [170,255] between pixel quantity percentage is obtained in the histogram between [0,85]
p2；
P1 and p2 are contrasted, work as p1>Light is automatically turned on during p2, works as p1<Automatically light is closed during p2.
Optionally, the default IMAQ rule is to carry out an IMAQ every 10ms.
Optionally, p1 is worked as>During p2, identify in the foreground image whether there is car plate, when without car plate, automatic switchover distance light
Lamp；When there is car plate, the characteristic of the car plate is analyzed and stored, and carried out pair with the history feature data of the car plate
Than to judge that vehicle where the car plate whether in movement, when the vehicle movement where the car plate, automatically switches to
Dipped headlight, when the stationary vehicle where the car plate, automatically switch to high beam.
Optionally, after running car, signal light control is either automatically or manually in " Auto " gears.
The present invention also provide it is a kind of realize it is above-mentioned based on prospect can identification car bulb autocontrol method vapour
Car light automatic control system, including the image capture module of foreground image during for gathering running car, for will described in
Foreground image is converted into the histogram processing module of one dimensional histograms, for obtaining and contrasting in the histogram picture between [0,85]
The Statistical Comparison module of pixel quantity percentage p2 sizes and for producing lamp between plain number percent p1 and [170,255]
The switching signal sending module of light switching signal；Wherein, described image acquisition module be arranged on the automobile front portion, and with institute
Gas or the association of speed instrument dial plate are stated, starts in running car and is closed after automobile stopping；The histogram
The input of processing module is connected with described image acquisition module, the output end of the histogram processing module and the statistics pair
Input than module connects；The input of the switching signal sending module directly or indirectly with the Statistical Comparison
The output end connection of module, the output end of the switching signal sending module are connected with the electronic control unit ECU of the automobile.
Optionally, described image acquisition module also associates signal light control " Auto " shelves of the automobile, when running car and
During " Auto " shelves are set to, according to foreground image during default IMAQ rule automatic data collection running car.
Optionally, the car bulb automatic control system also includes timer, control described image acquisition module every
10ms gathers once the foreground image of the running car.
Optionally, the car bulb automatic control system also includes Car license recognition module, the Car license recognition module
Input connects the output end of described image acquisition module and the output end of Statistical Comparison module, the Car license recognition module respectively
Output end connect the switching signal sending module.
Optionally, described image acquisition module is mainly connected by wide-angle lens with imaging sensor forms.
Compared with prior art, technical scheme has the advantages that：
1st, it is of the invention based on prospect can identification car bulb autocontrol method, according to running car foreground image
The distribution relation (i.e. automobile prospect can identification) of the light and shade part of corresponding one dimensional histograms, to differentiate vehicle front environment
Bright-dark degree, so as to carry out the automatic switchover of light on this basis, such as when the dark portion of the foreground image collected is far high
In highlights, then show that front ambient light is dark, sent from trend ECU and open car bulb request or instruction, to automatically turn on
Light, had more compared with the existing ambient light light and shade depth received by photosensitive component to decide whether to open light
Real-time and reliability, can accurate judgement ambient light, avoid being influenceed and produced by junior or dust stratification erroneous judgement and leakage
The problem of reliability such as sentencing.
2nd, it is of the invention based on prospect can identification car bulb automatic control system, mainly by image capture module,
Histogram processing module, Statistical Comparison module, switching signal sending module composition, structural reduction, it is thus only necessary to which switching signal is sent out
Send module to send to ECU to instruct, cost is cheap, dependable performance, unidirectional to send request or instruction, and ECU can be used existing logical
Believe agreement, the change to existing automobile hardware structure is minimum, thus is easier to realize.
Brief description of the drawings
Fig. 1 be one embodiment of the invention based on prospect can identification car bulb autocontrol method flow chart；
The one dimensional histograms after the conversion of foreground image when Fig. 2 is the running car that one embodiment of the invention collects
And corresponding statistics；
Fig. 3 be another embodiment of the present invention two based on prospect can identification car bulb autocontrol method flow
Figure；
Fig. 4 be one embodiment of the invention based on prospect can identification car bulb automatic control system structural representation
Figure；
Fig. 5 be another embodiment of the present invention based on prospect can the structure of car bulb automatic control system of identification show
It is intended to.
Embodiment
Below in conjunction with the accompanying drawings with specific embodiment come describe in detail the present invention based on prospect can identification car bulb
Autocontrol method and system.
Refer to Fig. 1, one embodiment of the invention provide it is a kind of based on prospect can identification the car bulb side of automatically controlling
Method, comprise the following steps：
S100, after automobile starts running, before in front of default IMAQ rule automatic data collection running car
Scape image, specifically, when automobile starts running, the signal light control of automobile is either automatically or manually placed in " Auto " shelves, afterwards
During the traveling of automobile, the ambient image in front of a running car, i.e. foreground image are gathered every 10ms；
S101, the foreground image of collection is converted into one dimensional histograms；
S102, pixel quantity percentage p1 and [170,255] between pixel quantity is obtained in the histogram between [0,85]
Percentage p2, wherein the pixel in [0,85] section can represent the part of dark in environment in front of running car, [170,
255] pixel in section can represent the part that light is brighter in the environment of running car front；
S103, p1 and p2 are contrasted, work as p1>During p2, represent the dark of environment in front of running car, it is necessary to open
Light is opened, request or the command signal for opening headlight can be sent to ECU, so that ECU automatically opening automobile headlights,Automobile is big LampAlso referred to asCar headlamp, automobileLED daytime running lights, long-and-short distant light, after ECU automatically opening automobile headlights, automobile can be opened
High beam or unlatching dipped headlight, and go to step S301；Work as p1<During p2, represent running car in front of environment light compared with
For abundance, sight can be preferable, and without opening light, request or the command signal for closing headlight can be sent to ECU, so that
ECU automatically shutting down automobile big lamps, high beam and dipped headlight are turned off, and go to step S301.
In a concrete application embodiment, running car is in a Tiao Kongxiang streets at night, and the one of step S100 collections
Collected in foreground image one, the street roadside advertisement lamp-plate lighted and some shops small illuminating lamp in front of the door and
Periphery house, road is rather dark, it is necessary to open auto lamp under the running car ambient light that the foreground image is shown on the whole
Light so as to ensure drive security.But due to the strong influence of advertisement lamp-plate light, using light-sensitive devices such as traditional photosensitive resistance
Automobile light control system to be mistakenly considered ambient light sufficient so as to closing automobile light, the problem of producing erroneous judgement.Before described
One dimensional histograms of the scape image after step S101 conversions, as shown in Fig. 2 and by step S102 statistical charts 2 [0,
85] with [170,255] on pixel quantity percentage p1=86.43%, p2=9.41%.By the p1 and p2 in step S103
Size contrasts, and finds p1>P2, so as to judge insufficient light in running car environment, sent at once to ECU and open light request,
As a result correctly, logical so as to open headlight for vehicles, reliability is high.
As can be seen here, the present embodiment based on prospect can identification car bulb autocontrol method, according to garage
The distribution relation (i.e. automobile prospect can identification) of the light and shade part of one dimensional histograms corresponding to foreground image is sailed, to differentiate vapour
The bright-dark degree of front side environment, so as to carry out the automatic switchover of light on this basis, such as when the foreground image collected
Dark portion be far above highlights, then show front ambient light it is dark, from trend ECU send open car bulb request or instruction,
To automatically turn on light, decide whether to open compared with the existing ambient light light and shade depth received by photosensitive component
Light has more real-time and reliability, can accurate judgement ambient light, avoid being influenceed and being produced by junior or dust stratification
Raw erroneous judgement and fail to judge etc. reliability the problem of.
Refer to Fig. 4, the present embodiment also provide it is a kind of realize shown in Fig. 1 based on prospect can identification car bulb from
The car bulb automatic control system 40 of flowing control method, including timer 401, image capture module 402, histogram treatment mould
Block 403, Statistical Comparison module 404, switching signal sending module 405.Wherein, timer 401 be used for timing, timing reset and
The timing acquiring image of image capture module 402, such as control described image acquisition module 402 is controlled to gather once institute every 10ms
State the foreground image of running car.Image capture module 402 is used to gather foreground image during running car, mainly by wide-angle lens
Head connects composition with imaging sensor, image capture module 402 installed in the front portion of the automobile, and with the gas or
Speed instrument dial plate associates, and also associates signal light control " Auto " shelves of the automobile, in running car and automobile signal light control
It is placed in " Auto " between the working days to start and close after automobile stopping, described image acquisition module 402 is in timer
Foreground image under 401 control during timing automatic collection running car.The input of histogram processing module 403 and the figure
As the output end connection of acquisition module 402, the output end of the histogram processing module 403 and the Statistical Comparison module 404
Input connection, the foreground image for described image acquisition module 402 to be gathered is converted into one dimensional histograms.Statistical Comparison
The output end of module 404 is connected with the input of the switching signal sending module 405, for obtaining the histogram treatment mould
Pixel quantity percentage between pixel quantity percentage p1 and [170,255] between [0,85] in the one dimensional histograms that block 403 exports
P2 sizes, and contrast p1 and p2 size.The output end of the switching signal sending module 405 and the Electronic Control of the automobile
Unit ECU 41 is connected, in p1>During p2, request or the command signal for opening headlight are sent to ECU 41, so that ECU 41 is certainly
It is dynamic to open headlight for vehicles 42, in p1<During p2, request or the command signal for closing headlight are sent to ECU 41, so that ECU 41
Automatically shutting down automobile big lamp 42.
The present embodiment based on prospect can identification car bulb automatic control system, by image capture module, Nogata
Figure processing module, Statistical Comparison module, switching signal sending module composition, structural reduction, it is thus only necessary to which switching signal sends mould
Block sends to ECU and instructed, and cost is cheap, dependable performance, unidirectional to send request or instruction, and can be assisted using ECU existing communications
View, the change to existing automobile hardware structure is minimum, thus is easier to realize.
Refer to Fig. 3, another embodiment of the present invention provide it is a kind of based on prospect can the car bulb of identification automatically control
Method, comprise the following steps：
S300, after automobile starts running, before in front of default IMAQ rule automatic data collection running car
Scape image, specifically, when automobile starts running, the signal light control of automobile is either automatically or manually placed in " Auto " shelves, afterwards
During the traveling of automobile, the ambient image in front of a running car, i.e. foreground image are gathered every 10ms；
S301, the foreground image of collection is converted into one dimensional histograms；
S302, pixel quantity percentage p1 and [170,255] between pixel quantity is obtained in the histogram between [0,85]
Percentage p2, wherein the pixel in [0,85] section can represent the part of dark in environment in front of running car, [170,
255] pixel in section can represent the part that light is brighter in the environment of running car front；
S303, p1 and p2 size is contrasted, if p1<P2 then goes to step S304, otherwise goes to step 305；
S304, p1<Pixel number in p2, i.e. color range [0,85] represents less than the pixel number in color range [170,255]
The light of environment is more sufficient in front of running car, and sight can be preferable, without opening light, can be sent to ECU and close headlight
Request or command signal so that ECU automatically shutting down automobile big lamps, high beam and dipped headlight are turned off, and go to step S301；
S305, p1>Pixel number in p2, i.e. color range [0,85] is no less than the pixel number in color range [170,255], then
Show environment dark, light need to be opened, then judge to whether there is car plate in the foreground image, if there is car plate to turn
Step S306, if unidentified arrive car plate, represent that front occurs temporarily without vehicle, go to step S309；
S306, the car plate recognized is recorded, and analyze the characteristic of the car plate in the foreground image
According to (including car plate size, car plate present position in foreground image), and then the car plate and the characteristic analyzed are stored,
Then S306 is gone to step；
S307, the history feature data of the car plate matching are judged whether, if history feature data are not present, are represented
Just seen the vehicle where the car plate, the vehicle where the car plate and the automobile (i.e. this car) apart also farther out, then
S309 is gone to step, if history of existence characteristic, represents vehicle where the car plate and the automobile (i.e. this car) side apart
Closely, then S308 is gone to step；
S308, according to the operating range of the automobile (can be multiplied by using speed time calculate) and the car plate
All history feature data (including present position in size, image) calculate analyze the car plate where vehicle be it is mobile,
Or static parked vehicle, if static go to step S309, if mobile, illustrate that the automobile is just following the car where the car plate
Traveling or just with where the car plate vehicle carry out meeting, go to step S310；
S309, sent to ECU and open high beam request or instruction, with the high beam that automatically switches, go to step S301 afterwards；
S310, sent to ECU and open dipped headlight request or instruction, with the dipped headlight that automatically switches, go to step S301 afterwards.
In a concrete application embodiment, running car is in a Tiao Kongxiang streets at night, and the one of step S300 collections
Collected in foreground image one, the street roadside advertisement lamp-plate lighted and some shops small illuminating lamp in front of the door and
Periphery house, road is rather dark, it is necessary to open auto lamp under the running car ambient light that the foreground image is shown on the whole
Light so as to ensure drive security.But due to the strong influence of advertisement lamp-plate light, using light-sensitive devices such as traditional photosensitive resistance
Automobile light control system to be mistakenly considered ambient light sufficient so as to closing automobile light, the problem of producing erroneous judgement.Before described
One dimensional histograms of the scape image after step S301 conversions, as shown in Fig. 2 and by step S302 statistical charts 2 [0,
85] with [170,255] on pixel quantity percentage p1=86.43%, p2=9.41%.By the p1 and p2 in step S303
Size contrasts, and finds p1>P2, so as to judge insufficient light in running car environment, S305 is gone to step, in not described foreground image
Identify that any car plate is present, now go to step S309 and send unlatching high beam request to ECU, and then automatically open up high beam,
As a result correct, logical, reliability is high.
In summary, the present embodiment based on prospect can identification car bulb autocontrol method, compared to embodiment
One, the car plate for whether having car plate to occur and occur in foreground image can be determined whether when needing turn on lights light
Whether the vehicle at place moves, so can realize the accurate automatic switchover of distance-light and in bright and clear environment it is automatic
Close light.
Refer to Fig. 5, the present embodiment also provide it is a kind of realize shown in Fig. 3 based on prospect can identification car bulb from
The car bulb automatic control system 50 of flowing control method, including timer 501, image capture module 502, histogram treatment mould
Block 503, Statistical Comparison module 504, Car license recognition module 505, switching signal sending module 506.Wherein, timer 501 is used for
Timing, timing are reset and the control timing acquiring image of image capture module 402, such as control described image acquisition module 502
The foreground image of the running car is gathered once every 10ms.Before when image capture module 502 is for gathering running car
Scape image, mainly connected and formed with imaging sensor by wide-angle lens, before image capture module 502 is arranged on the automobile
Portion, and associated with the gas or speed instrument dial plate, signal light control " Auto " shelves of the automobile are also associated, in garage
When sailing and the signal light control of automobile is placed in " Auto " and starts between the working days and closed after automobile stopping, described image
Foreground image of the acquisition module 502 under the control of timer 501 during timing automatic collection running car.Histogram processing module
503 input is connected with the output end of described image acquisition module 502, the output end of the histogram processing module 503 with
The input connection of the Statistical Comparison module 504, the foreground image for described image acquisition module 502 to be gathered are converted into
One dimensional histograms.The output end of Statistical Comparison module 504 is connected with the input of the Car license recognition module 505, for obtaining
Pixel quantity percentage p1 and [170,255] between [0,85] in the one dimensional histograms that the histogram processing module 503 exports
Between pixel quantity percentage p2 sizes, and contrast p1 and p2 size.The input of the Car license recognition module 505 and the figure
As the output end connection of the output end and Statistical Comparison module 504 of acquisition module 502, for sentencing in Statistical Comparison module 504
Break and p1>During p2, it whether there is car plate in the foreground image of the output of identification described image acquisition module 502, and identifying car
During board, characteristic (including car plate size, the car plate institute in foreground image of the car plate in the foreground image is analyzed
Locate position), and then store the car plate and the characteristic analyzed.The input of switching signal sending module 506 and institute
State the output end connection of Car license recognition module 505, the output end of the switching signal sending module 506 and the electronics of the automobile
Control unit ECU 41 is connected, in p1<During p2, request or the command signal for closing headlight are sent to ECU 51, so that
The high beam 521 and dipped headlight 522 of the automatically shutting down automobile big lamps 52 of ECU 41；In p1>During p2, the car is judged whether
The history feature data of board matching, and in the history feature data in the absence of the car plate and where the car plate is judged
Stationary vehicle when, to ECU 51 send open high beam request or command signal, opened with automatically switching to high beam 521,
When in the vehicle movement where judging the car plate, sent to ECU 51 and open dipped headlight request or command signal, with certainly
It is dynamic to switch to dipped headlight 522 and open.Wherein, the switching signal sending module 506 is analyzed according to the vehicle identification module 505
The characteristic that goes out, the operating range (can be multiplied by using speed time calculate) of automobile and all of the car plate are gone through
Whether the vehicle that history characteristic (including present position in size, image) calculates where analyzing the car plate moves.
The present embodiment based on prospect can identification car bulb automatic control system, by image capture module, Nogata
Figure processing module, Statistical Comparison module, Car license recognition module, switching signal sending module composition, structural reduction, it is thus only necessary to cut
Change signal transmitting module and sent to ECU and close light, switch to high beam, switch to the instruction such as dipped headlight, you can realize far and near
The accurate automatic switchover of light and the automatic closing light in bright and clear environment, cost is cheap, dependable performance, unidirectional to send
Request or instruction, and ECU existing communication agreements can be used, the change to existing automobile hardware structure is minimum, thus is easier to
Realize.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Creative work can is needed to make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (9)
1. it is a kind of based on prospect can identification car bulb autocontrol method, it is characterised in that comprise the following steps：
After automobile starts running, according to foreground image during default IMAQ rule automatic data collection running car；
The foreground image of collection is converted into one dimensional histograms；
Pixel quantity percentage p1 and [170,255] between pixel quantity percentage p2 is obtained in the histogram between [0,85]；
P1 and p2 are contrasted, work as p1>Light is automatically turned on during p2, works as p1<Automatically light is closed during p2.
2. it is according to claim 1 based on prospect can identification car bulb autocontrol method, it is characterised in that institute
It is to carry out an IMAQ every 10ms to state default IMAQ rule.
3. it is according to claim 1 based on prospect can identification car bulb autocontrol method, it is characterised in that when
p1>During p2, identify in the foreground image whether there is car plate, when without car plate, automatic switchover high beam；When there is car plate, point
The characteristic of the car plate is analysed and stored, and is contrasted with the history feature data of the car plate, to judge the car
Whether vehicle where board when the vehicle movement car plate where, automatically switches to dipped headlight, when the car plate in movement
During the stationary vehicle at place, high beam is automatically switched to.
4. it is according to claim 1 based on prospect can identification car bulb autocontrol method, it is characterised in that
After running car, signal light control is either automatically or manually in " Auto " gears.
5. it is a kind of realize any one of Claims 1-4 based on prospect can identification the car bulb side of automatically controlling
The car bulb automatic control system of method, it is characterised in that the image of foreground image during including for gathering running car is adopted
It is collection module, the histogram processing module for the foreground image to be converted into one dimensional histograms, described for obtaining and contrasting
In histogram between [0,85] between pixel quantity percentage p1 and [170,255] pixel quantity percentage p2 sizes Statistical Comparison
Module and the switching signal sending module for producing light switching signal；Wherein, described image acquisition module is arranged on institute
The front portion of automobile is stated, and is associated with the gas or speed instrument dial plate, starts in running car and stops in the automobile
Closed after only；The input of the histogram processing module is connected with described image acquisition module, the histogram processing module
Output end be connected with the input of the Statistical Comparison module；The input of the switching signal sending module directly or
Indirectly the output end with the Statistical Comparison module is connected, output end and the automobile of the switching signal sending module
Electronic control unit ECU connections.
6. car bulb automatic control system as claimed in claim 5, it is characterised in that described image acquisition module also associates
Signal light control " Auto " shelves of the automobile, during running car and " Auto " shelves are set to, adopted according to default image
Collect foreground image during regular automatic data collection running car.
7. car bulb automatic control system as claimed in claim 5, it is characterised in that the car bulb, which automatically controls, is
System also includes timer, and control described image acquisition module gathers once the foreground image of the running car every 10ms.
8. car bulb automatic control system as claimed in claim 5, it is characterised in that the car bulb, which automatically controls, is
System also includes Car license recognition module, and the input of the Car license recognition module connects the output end of described image acquisition module respectively
With the output end of Statistical Comparison module, the output end of the Car license recognition module connects the switching signal sending module.
9. the car bulb automatic control system as any one of claim 5 to 8, it is characterised in that described image is adopted
Collection module is mainly connected by wide-angle lens with imaging sensor to be formed.
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| CN111497732B (en) * | 2019-01-31 | 2022-06-03 | 杭州海康威视数字技术股份有限公司 | Automobile lamp control method, device, control equipment, system and storage medium |
| CN110549934A (en) * | 2019-09-12 | 2019-12-10 | 中国计量大学 | Automobile intelligent light adjusting system based on image processing and deep learning |
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Application publication date: 20180109 |