CN106781474B - A method of traffic accident spot self-healing ability is judged based on traffic video - Google Patents
A method of traffic accident spot self-healing ability is judged based on traffic video Download PDFInfo
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- CN106781474B CN106781474B CN201611189313.1A CN201611189313A CN106781474B CN 106781474 B CN106781474 B CN 106781474B CN 201611189313 A CN201611189313 A CN 201611189313A CN 106781474 B CN106781474 B CN 106781474B
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a kind of method for judging traffic accident spot self-healing ability based on traffic video, include the following steps: that (1) parameter is chosen；(2) video parameter is extracted；(3) evaluation index determines；(4) self-healing ability is analyzed.The data that the present invention takes are to ensure that the accuracy and authenticity of analysis to a certain extent based on traffic accident video；Carrying out analysis with actual scene and the data of acquisition ensure that stronger engineering construction effect, save manpower and material resources to a certain extent；The self-healing ability for understanding traffic accident spot has preferable management meaning to traffic order, traffic flow self-organizing mechanism based on analysis place where the accident occurred point takes corresponding management measure with organizational capacity, it to guarantee that the traffic flow being destroyed can restore original traffic circulation level with most fast speed, while may be that highway layout provides preferable practical reference criterion.
Description
Technical field
The present invention relates to traffic accident spot self-healing ability analysis technical fields, especially a kind of to be sentenced based on traffic video
The method of disconnected traffic accident spot self-healing ability.
Background technique
As the development of social economy and car ownership increase year by year, the pressure of road traffic resource is gradually increased.
At the same time, traffic accident rate and severity also have corresponding variation, and traffic accident analysis becomes traffic peace
The research hotspot in full field.The record of traffic administration personnel when accident occurs mainly was relied on to the analysis of traffic accident in the past
Report and photo, the result of judgement, which often ignores real-time traffic overall situation, to be influenced, and causes the result of judgement can partially
Difference.The drawbacks of in order to solve the field, related scholar's proposition carry out the reason of analysis accident occurs based on traffic video, pass through view
Frequency analysis can preferably restore the situation of traffic environment when accident occurs, and make to analyze result more accurately, rationally.But now
The solution of most problems is all the policy and measure relied on after the accident, and often ignoring is a place traffic flow itself
The feature and organizational capacity for being included.Roadnet is a complex environment, and vehicle enters the ring as main compositing factor
Border is simultaneously travelled according to the wish of itself, and self-organizing forms traffic flow on network, by the inherent operation machine for studying traffic flow
System can be improved the efficiency and effect of traffic administration.
The generating process of the place traffic flow organization is mainly concentrated on to the self-healing ability research of accident spot both at home and abroad
(phase transformation of traffic flow, tissue criticality) and in traffic system in terms of, by relevant model with
And simulated experiment describes the traffic flow micro-variations situation in certain place under varying environment.But most of experiment is all according to mould
Quasi- experimental data and experimental model carry out, and give relevant result of study and propose corresponding theoretical basis, comparatively work
The specific aim of journey actual embodiment effect is weaker.
Summary of the invention
Technical problem to be solved by the present invention lies in provide one kind and judge traffic accident spot certainly based on traffic video
More the method for ability more accurately describes the self-healing ability of accident spot.
In order to solve the above technical problems, the present invention, which provides one kind, judges traffic accident spot self-healing energy based on traffic video
The method of power, includes the following steps:
(1) parameter is chosen: choosing practical current volume of traffic V, mean transit time t, conflict point number l, accident spot vehicle
Travel speed V is major parameter；
(2) video parameter is extracted: based on the parametric variable selection in (1), parameter extraction is carried out to the video of typing, by thing
Therefore take the time between behavior adjustment management to divide to traffic administration personnel after occurring, it was according to every 5 minutes by the period
One processing unit is extracted by parameter of the software to each unit；
(3) evaluation index determines: determining that final evaluation index is capacity ratio V/C, reflects that the volume of traffic of accident spot holds
Receive ability；Average transit time t indicates the evacuation capacity variation of accident spot；Conflict point surface density l/100m2, reflect accident
The order and patency in place；Efficiency indexWhereinIt is corresponding to section equal to the travel speed of accident spot vehicle to design
The ratio of speed；
(4) self-healing ability is analyzed: handling to obtain " the practical current volume of traffic by the analysis of (2) step accident spot video
V, the parameter values such as mean transit time t, conflict point number l, accident spot Vehicle Speed V ", which is brought into (3)
Index, wherein the C in capacity ratio V/C can by consult highway layout standard in ideal traffic capacity value determine, bring V/C into
In can calculate the value of capacity ratio, conflict point surface density is the ratio of conflict point number l and 100, efficiency indexFor accident spot vehicle
The ratio of travel speed V and highway layout speed, wherein highway layout speed can pass through category of roads and consult highway layout mark
Standard is determined；Based on the above calculating can respectively obtain corresponding index as a result, it is desirable to compare each index value of each unit respectively
Situation of change, according to situation of change can analysis " efficiency, patency, stability " quantitatively variation, wherein capacity ratio V/C
Changing value can determine whether the index changed as accident spot " stability ", efficiency indexIt can be used as accident with mean transit time t
The index of place " efficiency " variation, conflict point surface density can be used as the index for judging accident spot " patency ", pass through three
The situation of change of aspect can directly judge the self-healing ability of accident spot.
Preferably, in step (2), processing software Autoscope, by the way that the video of acquisition is imported into the processing software
In, the testing equipments such as virtual detector, required parameter value in acquisition (1) are added by Net-connected computer.
The invention has the benefit that the data taken are ensure that a certain extent point based on traffic accident video
The accuracy and authenticity of analysis；Carrying out analysis with actual scene and the data of acquisition ensure that stronger engineering construction effect
Fruit proposes targetedly according to the self-healing ability of different location difference accident situation analysis place where the accident occurred and according to analysis result
Measures and proposals avoid the implementation of " general character measure ", have saved manpower and material resources to a certain extent；Understand traffic accident
The self-healing ability on ground has preferable management meaning, the traffic flow self-organizing machine based on analysis place where the accident occurred point to traffic order
Reason takes corresponding management measure with organizational capacity, to guarantee that the traffic flow being destroyed can restore original with most fast speed
Traffic circulation it is horizontal, while may be that highway layout provides and preferable practical uses for reference criterion.
Detailed description of the invention
Fig. 1 is example Path selection schematic diagram of the invention.
Specific embodiment
As shown in Figure 1, a kind of method that traffic accident spot self-healing ability is judged based on traffic video, including walk as follows
It is rapid:
(1) parameter is chosen: choosing practical current volume of traffic V, mean transit time t, conflict point number l, accident spot vehicle
Travel speed V is major parameter；
(2) video parameter is extracted: based on the parametric variable selection in (1), parameter extraction is carried out to the video of typing, by thing
Therefore take the time between behavior adjustment management to divide to traffic administration personnel after occurring, it was according to every 5 minutes by the period
One processing unit is extracted by parameter of the software to each unit；Processing software is Autoscope, by that will acquire
Video imported into the processing software, the testing equipments such as virtual detector are added by Net-connected computer, in acquisition (1) needed for
The parameter value wanted；
(3) evaluation index determines: determining that final evaluation index is capacity ratio V/C, reflects that the volume of traffic of accident spot holds
Receive ability；Average transit time t indicates the evacuation capacity variation of accident spot；Conflict point surface density l/100m2, reflect accident
The order and patency in place；Efficiency indexWhereinIt is corresponding to section equal to the travel speed of accident spot vehicle to design
The ratio of speed；
(4) self-healing ability is analyzed: handling to obtain " the practical current volume of traffic by the analysis of (2) step accident spot video
V, the parameter values such as mean transit time t, conflict point number l, accident spot Vehicle Speed V ", which is brought into (3)
Index, wherein the C in capacity ratio V/C can by consult highway layout standard in ideal traffic capacity value determine, bring V/C into
In can calculate the value of capacity ratio, conflict point surface density is the ratio of conflict point number l and 100, efficiency indexFor accident spot vehicle
The ratio of travel speed V and highway layout speed, wherein highway layout speed can pass through category of roads and consult highway layout mark
Standard is determined；Based on the above calculating can respectively obtain corresponding index as a result, it is desirable to compare each index value of each unit respectively
Situation of change, according to situation of change can analysis " efficiency, patency, stability " quantitatively variation, wherein capacity ratio V/C
Changing value can determine whether the index changed as accident spot " stability ", efficiency indexIt can be used as accident with mean transit time t
The index of place " efficiency " variation, conflict point surface density can be used as the index for judging accident spot " patency ", pass through three
The situation of change of aspect can directly judge the self-healing ability of accident spot.
Illustrate the present invention with specific embodiment below.
(1) video parameter is handled: the traffic accident occurrence record video of acquisition being imported in Autoscope software, is passed through
It sets analog detector and recorder (line of reference is set according to place where the accident occurred point) acquires required parameter value, such as table 1-1
It is shown.
Table 1-1 statistics of data acquisition table
(2) index calculated value: handling resulting data based on related software and calculate index corresponding in each period,
The parameter of this example is as shown in table 1-2.
Table 1-2 index counting statistics table
(3) self-healing ability is analyzed: index value calculated in (2) is for statistical analysis, in the little feelings of data volume
Sunykatuib analysis can be carried out using simple excel under condition.The conclusion of this test is the applicability in order to illustrate index, numerical value
Be assuming that in the case where explain.It finds that capacity ratio can slowly become larger with the time by data analysis, indicates logical
The process of the accident spot self-healing place traffic flow overall stability is crossed slowly to reinforce；The variation of " passing through the time " index, which is stablized, to be maintained
Under certain level, indicate that in the degree of crowding variation of accident spot self-healing stage road be not apparent；The face of conflict point
Variable density is more obvious, illustrates that accident spot self-healing procedure greatly reduces vehicle collision as the variation of time gradually becomes smaller；
Efficiency index calculated result variation tendency is similar with the travel time, the less relatively stable explanation row in self-healing procedure of overall variation
Vehicle efficiency does not have greatly improved.
Although the present invention is illustrated and has been described with regard to preferred embodiment, it is understood by those skilled in the art that
Without departing from scope defined by the claims of the present invention, variations and modifications can be carried out to the present invention.
Claims (2)
1. a kind of method for judging traffic accident spot self-healing ability based on traffic video, which is characterized in that including walking as follows
It is rapid:
(1) parameter is chosen: choosing practical current volume of traffic V, mean transit time t, conflict point number l, accident spot vehicle row
Sailing speed V is major parameter；
(2) video parameter is extracted: based on the parametric variable selection in (1), carrying out parameter extraction to the video of typing, accident is sent out
Take the time between behavior adjustment management to divide to traffic administration personnel after life, by the period according to every 5 minutes be one
Processing unit is extracted by parameter of the software to each unit；
(3) evaluation index determines: determining that final evaluation index is capacity ratio V/C, reflects that the volume of traffic of accident spot accommodates energy
Power；Average transit time t indicates the evacuation capacity variation of accident spot；Conflict point surface density l/100m2, reflect accident spot
Order and patency；Efficiency indexWhereinDesin speed corresponding to section equal to the travel speed of accident spot vehicle
Ratio；
(4) self-healing ability is analyzed: being handled to obtain by the analysis of (2) step accident spot video and " practical current volume of traffic V, be put down
By time t, conflict point number l, accident spot Vehicle Speed V " parameter value, which is brought into (3)
Index, wherein the C in capacity ratio V/C is determined by the ideal traffic capacity value consulted in highway layout standard, is brought V/C into and is fallen into a trap
The value of capacity ratio is calculated, conflict point surface density is the ratio of conflict point number l and 100, efficiency indexFor accident spot vehicle driving
The ratio of speed V and highway layout speed, wherein highway layout speed is consulted highway layout standard by category of roads and is carried out really
It is fixed；Based on the above calculating respectively obtain corresponding index as a result, it is desirable to compare the situation of change of each index value of each unit respectively,
According to the variation of the quantitative analysis of situation of change " efficiency, patency, stability ", wherein capacity ratio V/C changing value is used as and sentences
The index of disconnected accident spot " stability " variation, efficiency indexChange with mean transit time t as accident spot " efficiency "
Index, for conflict point surface density as the index for judging accident spot " patency ", the situation of change by three aspects is direct
Judge the self-healing ability of accident spot；Find that capacity ratio can slowly become larger with the time by data analysis, expression passes through thing
The process of the old place point self-healing place traffic flow overall stability is slowly reinforced；The variation of " passing through the time " index is stably maintained at one
Under fixed level, indicate that in the degree of crowding variation of accident spot self-healing stage road be not apparent；The surface density of conflict point
Variation is more obvious, illustrates that accident spot self-healing procedure greatly reduces vehicle collision as the variation of time gradually becomes smaller；Efficiency
Index calculated result variation tendency is similar with the travel time, and the less relatively stable explanation of overall variation is imitated in self-healing procedure middle rolling car
Rate does not have greatly improved.
2. judging the method for traffic accident spot self-healing ability based on traffic video as described in claim 1, feature exists
In in step (2), processing software Autoscope passes through networking by the way that the video of acquisition to be imported into the processing software
Computer adds virtual detector testing equipment, required parameter value in acquisition (1).
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| CN101017608A (en) * | 2007-03-01 | 2007-08-15 | 上海三全科技有限公司 | The single-loop and single-section onsite detection method for traffic situation and traffic accident |
| CN102360526A (en) * | 2011-09-28 | 2012-02-22 | 东南大学 | Real-time monitoring method for road section state of high road |
| CN102419905A (en) * | 2011-08-12 | 2012-04-18 | 北京航空航天大学 | Traffic-wave theory-based traffic influence area determining method of expressway accidents |
| CN104464321A (en) * | 2014-12-17 | 2015-03-25 | 合肥革绿信息科技有限公司 | Intelligent traffic guidance method based on traffic performance index development trend |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9349288B2 (en) * | 2014-07-28 | 2016-05-24 | Econolite Group, Inc. | Self-configuring traffic signal controller |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101017608A (en) * | 2007-03-01 | 2007-08-15 | 上海三全科技有限公司 | The single-loop and single-section onsite detection method for traffic situation and traffic accident |
| CN102419905A (en) * | 2011-08-12 | 2012-04-18 | 北京航空航天大学 | Traffic-wave theory-based traffic influence area determining method of expressway accidents |
| CN102360526A (en) * | 2011-09-28 | 2012-02-22 | 东南大学 | Real-time monitoring method for road section state of high road |
| CN104464321A (en) * | 2014-12-17 | 2015-03-25 | 合肥革绿信息科技有限公司 | Intelligent traffic guidance method based on traffic performance index development trend |
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