CN106816010A - A kind of method to set up and system of car flow information monitoring device - Google Patents
A kind of method to set up and system of car flow information monitoring device Download PDFInfo
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 58
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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
- G08G1/065—Traffic control systems for road vehicles by counting the vehicles in a section of the road or in a parking area, i.e. comparing incoming count with outgoing count
Abstract
The application is related to technical field of intelligent traffic, the more particularly to a kind of method to set up and system of car flow information monitoring device.The method to set up of the car flow information monitoring device includes：Step a：It is determined that initial area-of-interest, and calculate the proximity relations between each initial area-of-interest；Step b：Described each initial area-of-interest is gradually merged according to the proximity relations, is obtained new unit interested；Step c：Information of vehicles monitors the quantity of required monitoring device between calculating the new unit interested, and the setting of the monitoring device is carried out according to result of calculation.The method to set up and system of the car flow information monitoring device of the embodiment of the present application are by reducing the fine degree of area-of-interest, to reduce the demand of monitoring device, so that maximum to the ability of the information of vehicles covering between area-of-interest, it is to avoid situation of the required number of devices beyond current budget.
Description
Technical field
The application is related to technical field of intelligent traffic, the method to set up of more particularly to a kind of car flow information monitoring device and is
System.
Background technology
Along with the level of urbanization rapid growth of China, the motorization level of urban transportation is fast-developing, is handed over to city
The service ability of way system brings huge challenge and pressure.Quick increased vehicles number causes urban ground traffic system
System faces increasingly serious traffic jam issue, is the main path for assessing road state to the monitoring of car flow information.Closely
Nian Lai, wagon flow OD (Origin and Destination, starting point and destination) information play in transport need analysis
More and more important role.By the Dynamic Spatial-temporal Changes Analysis of wagon flow OD information, can scientifically instruct to be handed in regional extent
The reasonable disposition of logical facility, effectively improves the service level of traffic system.
Wagon flow OD information is transinformation of the wagon flow between area-of-interest, it is necessary to be connected with area-of-interest to all
Roadway segment be monitored.Video surveillance data are a kind of data sources of important traffic characteristic information, on the one hand, can
Obtain the road traffic features information such as vehicle flowrate, the speed of fixed location road section；On the other hand, by image recognition skill
Art, can automatically identify the license plate information of vehicle, it is possible to achieve the tracking to vehicle individual, collect the information of vehicle OD.
In addressing based on video surveillance devices, the laying of camera is still to be laid towards the collection of fixed point transport information, mainly
Wagon flow quantity and the monitoring of vehicle characteristics for key node.
Current video surveillance devices addressing mode includes：First, monitoring device addressing is to analyze object, position with section
The purpose of laying be car flow information maximum on covering section, therefore be often set on key crossing.To image
As a example by head, in the case of limited amount, it is impossible to cover transitable all sections, vehicle between any two area-of-interest
Can therefore there is careless omission in OD information.Secondly, towards in the equipment locating in section, vehicle is different on the larger major trunk roads of vehicle flowrate
The possibility repeated in section is higher, towards in the facility addressing of section maximum stream flow, different camera institutes on major trunk roads
The vehicle presence of monitoring is largely repeated.Finally, in current equipment locating, road network and specific objective are usually given,
Calculating at least needs how many monitoring device and where is laying, and rarely has and formulates facility locations in the case where equipment is limited
Selection scheme research case.And in actual situation, the situation of limited budget is often there is, therefore, how to take the photograph
As formulating rational addressing scheme in the case of head limited amount so that the result of goal in research is optimal to seem most important.
The content of the invention
This application provides a kind of method to set up and system of car flow information monitoring device, it is intended at least to a certain extent
Solve one of above-mentioned technical problem of the prior art.
In order to solve the above problems, this application provides following technical scheme：
A kind of method to set up of car flow information monitoring device, including：
Step a：It is determined that initial area-of-interest, and calculate the proximity relations between each initial area-of-interest；
Step b：Described each initial area-of-interest is gradually merged according to the proximity relations, is obtained new sense
Interest unit；
Step c：The quantity of monitoring device needed for information of vehicles monitoring between the calculating new unit interested, and according to
Result of calculation carries out the setting of the monitoring device.
The technical scheme that the embodiment of the present application is taken also includes：In the step a, described to calculate each initial interested
Proximity relations between region includes：Locus feature and the relation of road network according to each initial area-of-interest, set up
The annexation of initial area-of-interest and given road network；And it is any to combine the locus feature calculation of initial area-of-interest
Proximity relations between two or more initial area-of-interests.
The technical scheme that the embodiment of the present application is taken also includes：According to proximity relations to described at the beginning of each in the step b
The interesting region that begins to flourish gradually is merged, including：According to the proximity relations between each initial area-of-interest, according to from the close-by examples to those far off
Principle, will gradually be entered apart from least two or more than two closest initial area-of-interests using hierarchy clustering method
Row merges.
The technical scheme that the embodiment of the present application is taken also includes：According to proximity relations to described at the beginning of each in the step b
The interesting region that begins to flourish gradually is merged, and is also included：Recalculate between new unit interested and other initial area-of-interests
Proximity relations, and will be new interested according to the proximity relations between new unit interested and other initial area-of-interests
Unit is merged with apart from least two or more than two closest initial area-of-interests.
The technical scheme that the embodiment of the present application is taken also includes：It is described to calculate new unit interested in the step c
Between the quantity of monitoring device needed for information of vehicles monitoring also include：Whether the quantity of monitoring device needed for judging exceedes limitation bar
Part, if the quantity of required monitoring device exceedes restrictive condition, re-executes step b；Wherein, the restrictive condition is actual
The quantity of monitoring device.
Another technical scheme that the embodiment of the present application is taken is：A kind of setting system of car flow information monitoring device, including：
Target determination module：For determining initial area-of-interest；
First computing module：For calculating the proximity relations between each initial area-of-interest；
Region merging technique module：For gradually being closed to described each initial area-of-interest according to the proximity relations
And, obtain new unit interested；
Second computing module：Information of vehicles monitors required monitoring device between for calculating the new unit interested
Quantity, and the setting of the monitoring device is carried out according to result of calculation.
The technical scheme that the embodiment of the present application is taken also includes：First computing module calculates each initial region of interest
Proximity relations between domain is specially：Locus feature and the relation of road network according to each initial area-of-interest, set up
The annexation of initial area-of-interest and given road network；And it is any to combine the locus feature calculation of initial area-of-interest
Proximity relations between two or more initial area-of-interests.
The technical scheme that the embodiment of the present application is taken also includes：The region merging technique module is according to proximity relations to described each
Individual initial area-of-interest is gradually merged specially：According to the proximity relations between each initial area-of-interest, according to
Principle from the close-by examples to those far off, gradually will initially feel emerging using hierarchy clustering method apart from closest at least two or more than two
Interesting region merges.
The technical scheme that the embodiment of the present application is taken also includes：The region merging technique module is according to proximity relations to described each
Individual initial area-of-interest is gradually merged also to be included：Recalculate new unit interested and other initial area-of-interests
Between proximity relations, and according to the proximity relations between new unit interested and other initial area-of-interests by new sense
Interest unit is merged with apart from least two or more than two closest initial area-of-interests.
The technical scheme that the embodiment of the present application is taken also includes result judge module, and the result judge module is used to judge
Whether the quantity of required monitoring device exceedes restrictive condition, if the quantity of required monitoring device exceedes restrictive condition, passes through
Region merging technique module proceeds region merging technique；Wherein, the restrictive condition is the quantity of actual monitoring equipment.
Relative to prior art, the beneficial effect that the embodiment of the present application is produced is：The car flow information of the embodiment of the present application
The method to set up and system of monitoring device by reducing the fine degree of area-of-interest, to reduce the demand of monitoring device,
So that maximum to the ability of the vehicle OD information can be caused to cover between area-of-interest, it is to avoid required number of devices exceeds current budget
Situation.
Brief description of the drawings
Fig. 1 is the flow chart of the method to set up of the car flow information monitoring device of the embodiment of the present application；
Fig. 2 is the flow chart of the method that the embodiment of the present application is gradually merged to initial area-of-interest；
Fig. 3 is the intersection information of vehicles assessment schematic diagram of the embodiment of the present application；
Fig. 4 is the structural representation of the setting system of the car flow information monitoring device of the embodiment of the present application；
Fig. 5 is to be the embodiment of the present application in the result schematic diagram of Dapeng peninsula regional experiment.
Specific embodiment
In order that the object, technical solution and advantage of the application become more apparent, it is right below in conjunction with drawings and Examples
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
Towards wagon flow OD information analysis be intended to analysis vehicle between the area-of-interest that can attract vehicle parks
Transinformation.In view of the mobile dependence traffic network of vehicle, therefore, the section associated with area-of-interest is (i.e. by interested
Region is set out or enters the section of area-of-interest) determine the quantity of monitoring device, i.e.,：Area-of-interest is rough, its
The quantity for associating section is fewer, fewer to the monitoring device quantity required for vehicle OD information can be caused to cover between area-of-interest.Base
In above-mentioned, the purpose of the application is directed to a kind of method to set up and system of car flow information monitoring device, can be set in monitoring
In the case of standby limited amount, by calculating the proximity relations between each area-of-interest, accordingly to each area-of-interest
Gradually merged, so that the fine degree of area-of-interest is reduced, to reduce the demand of monitoring device so as to interested
The ability of the vehicle OD information can be caused to cover between region is maximum, for transport need analysis and management based on vehicle OD information provide branch
Hold.In the examples below, be only specifically described so that monitoring device is as camera as an example, it will be understood that the application other
In embodiment, monitoring device can also for other photographing elements, detecting element etc., and be equally applicable to except vehicle OD information with
Outer other information of vehicles monitoring, for example, car speed monitoring etc..
Specifically, Fig. 1 is referred to, is the flow chart of the method to set up of the car flow information monitoring device of the embodiment of the present application.
The method to set up of the car flow information monitoring device of the embodiment of the present application is comprised the following steps：
Step 100：Initial area-of-interest is determined according to actual purpose, and is calculated between each initial area-of-interest
Proximity relations；
In step 100, it is determined that the mode of initial area-of-interest includes：According to hotel, scenic spot, cell and village and other places
Species type and road name, place name etc. determine initial area-of-interest.Calculate the proximity relations between each initial area-of-interest
Calculation be：Locus feature and the relation of road network according to each initial area-of-interest, set up initial interested
The annexation of region and given road network；And according to actual needs, with reference to the locus feature calculation of initial area-of-interest
Proximity relations between arbitrary initial area-of-interest.
In above-mentioned, in the embodiment of the present application, weigh each using the beeline of road network between initial area-of-interest
Proximity relations between individual initial area-of-interest.After initial area-of-interest and road network establish a connection, can be with root
According to the beeline (i.e. the distance of shortest path) between the topological relationship calculation arbitrary node that road network is connected.Due to needing to calculate
The distance between any two points, the embodiment of the present application (solves any two section in network structure using Floyd-Warshall algorithms
A kind of algorithm of the shortest path between point) calculate beeline.The algorithm basic thought is between two nodes (node i and j)
Beeline exist only in two kinds of possibility：(1) directly from node i to j；(2) i arrives j again by several nodes k.If sharp
The distance between node i and j are represented with Dis (i, j), the node to all processes judges Dis (i, k)+Dis (k, j)<Dis(i,
J), if set up, Dis (i, j)=Dis (i, k)+Dis (k, j), after the node k for having traveled through all processes, Dis are set
(i, j) is the beeline between two nodes.It is appreciated that minimum distance calculation side used in the embodiment of the present application
Method is the one kind in proximity relations balancing method, in actual applications, can be extended according to actual needs and again fixed
Justice.
Step 200：According to the proximity relations between each initial area-of-interest according to certain principle to related initial sense
Interest region is gradually merged, and forms a number of unit interested；
In step 200, the embodiment of the present application is to the combination principle that related initial area-of-interest is gradually merged：
According to the proximity relations between each initial area-of-interest, according to principle from the close-by examples to those far off, using hierarchy clustering method gradually
To be merged apart from least two or more than two closest initial area-of-interests, formed a number of interested
Unit；And then pay close attention to the wagon flow OD information between each unit interested.Wherein, single cluster side is produced with other cluster modes
Case is different, and what hierarchical clustering method was produced is a cluster level, and initial area-of-interest is carried out not in the embodiment of the present application
With the merging of degree.In view of combination principle from the close-by examples to those far off, the embodiment of the present application uses clustering method from bottom to top, constantly
Ground is merged to closest initial area-of-interest, forms new unit interested, until reaching sets target untill.
Further, Fig. 2 is referred to, is the side that the embodiment of the present application is gradually merged to related initial area-of-interest
The flow chart of method.The embodiment of the present application is comprised the following steps to the method that related initial area-of-interest is gradually merged：
Step 201：Each initial area-of-interest is classified as a class；
Step 202：According to the proximity relations between initial area-of-interest, by closest at least two or two or more
Initial area-of-interest merge, form new unit interested；
Step 203：Recalculate the proximity relations between new unit interested and other initial area-of-interests, and root
It is according to the proximity relations between new unit interested and other initial area-of-interests that new unit interested is most adjacent with distance
At least two or more than two near initial area-of-interests are merged, until meeting specific cluster condition untill.
In step 203, during hierarchical clustering between the new unit interested for being formed and other initial area-of-interests
The calculating of proximity relations can directly influence the result of cluster.According to the difference of distance calculating method, hierarchical clustering algorithm point
It is SL methods (single-linkage, single connection algorithm), CL methods (complete-linkage, full-join algorithm) and AL methods
(average-linkage, average level algorithm) three types, wherein, class spacing is the spacing of classification inner element in SL methods
From minimum value, and it is maximum that the class spacing of CL methods is corresponding, and the class spacing of AL methods is then with the spacing of classification inner element
From average level substitute, typically represented with intermediate value.Due to AL methods more can be between reflecting regional overall distance, the application
Embodiment preferably uses AL methods, but in the application other embodiment, is equally applicable to SL methods and CL methods.
Step 300：The quantity of camera needed for vehicle OD information monitorings between each unit interested after calculating merging；
In step 300, the calculation of required camera quantity is：First, according to the annexation of road network, calculate and close
And after unit all interested association section it is (i.e. all to enter each unit interested and from each unit interested
The section set out), and the camera quantity according to required for the situation in association section is calculated, by the prison that section is associated at these
Point position sets camera, and associating section to these by camera is monitored, you can realize car between unit interested
The extraction of OD information.In the embodiment of the present application, setting single camera can only monitor on road from the side of camera direction
Carry out the car plate of all automobiles to traveling, and road in survey region does not have the road of one-way trip, in such cases, often
The vehicle OD information monitorings in bar association section at least need 2 cameras.
Secondly, if the section of all directions of intersection belongs to the association section of unit interested, due to car
Flow of the flow in road junction position is conservation, and the vehicle OD information in the one of section of intersection can lead to
The vehicle OD information for crossing other directions is estimated to obtain, therefore, the camera in the section is redundancy, can be removed.Please specifically join
Fig. 3 is read, is the intersection information of vehicles assessment schematic diagram of the embodiment of the present application.Wherein, IA and OA represent vehicle from A respectively
Direction enters and goes out, and！IA and！OA represents that vehicle does not enter and go out from A directions respectively, and other are analogized.So, if
The vehicles while passing situation in tri- directions of known A, B and C, can calculate the vehicles passing in and out information in D directions.Circular is such as
Under：
ID=(OA∪OB∪OC)∩(！IA∩！IB∩！IC) (1)
OD=(IA∪IB∪IC)∩(！OA∩！OB∩！OC) (2)
The vehicle pass-through situation that camera section is not configured in intersection can be calculated by formula (1) and (2), so that
Further reduce the quantity of camera.And the situation at other types crossing, can be calculated according to this principle.Can manage
Solution, the computational methods not limited to this of camera quantity, can also specifically be extended according to actual needs in the embodiment of the present application.
Step 400：Whether the quantity of camera needed for judging exceedes restrictive condition, if the quantity of required camera exceedes
Restrictive condition, then re-execute step 200, untill the quantity of required camera is no more than restrictive condition.
In step 400, according to the camera quantity being calculated and restrictive condition (the camera quantity of actual budget)
Compare, if meeting corresponding pre-conditioned, stop union operation, on the association section of unit interested after merging
Monitoring location sets camera, so as in the case of camera limited amount so as to the vehicle between unit interested
OD information can be caused to cover ability is maximized.And support under different camera quantity restrictive conditions the formulation of camera set location scheme and
Selection, the fine degree of the vehicle OD information extractions that can be used for comparing under different schemes is conducive to formulating more scientific and reasonable
Practical application goal programming.
Fig. 4 is referred to, is the structural representation of the setting system of the car flow information monitoring device of the embodiment of the present application.This Shen
Please embodiment car flow information monitoring device setting system include target determination module, the first computing module, region merging technique mould
Block, the second computing module and result judge module.
Target determination module：For determining initial area-of-interest according to actual purpose；Wherein it is determined that initial region of interest
The mode in domain includes：Determined according to the types of ground objects such as hotel, scenic spot, cell and village and road name, place name etc. initial interested
Region.
First computing module：For calculating the proximity relations between each initial area-of-interest；Wherein, at the beginning of calculating each
The calculation of the proximity relations between beginning area-of-interest is：Locus feature according to each initial area-of-interest with
The relation of road network, sets up the annexation of initial area-of-interest and given road network；And according to actual needs, with reference to initially feeling emerging
Proximity relations between the locus feature calculation arbitrary initial area-of-interest in interesting region.
In above-mentioned, weighed using the beeline of road network between initial area-of-interest each initial area-of-interest it
Between proximity relations.After initial area-of-interest and road network establish a connection, the topology that can be connected according to road network is closed
System calculates the beeline between arbitrary node.Due to needing to calculate the distance between any two points, the embodiment of the present application is used
Floyd-Warshall algorithms calculate beeline.The algorithm basic thought is the most short distance of (node i and j) between two nodes
From existing only in two kinds of possibility：(1) directly from node i to j；(2) i arrives j again by several nodes k.If using Dis (i,
J) the distance between node i and j are represented, the node to all processes judges Dis (i, k)+Dis (k, j)<Dis (i, j), if
Set up, then set Dis (i, j)=Dis (i, k)+Dis (k, j), after the node k for having traveled through all processes, Dis (i, j) is just
It is the beeline between two nodes.It is appreciated that minimum distance calculation method used in the embodiment of the present application is
One kind in proximity relations balancing method, in actual applications, can according to actual needs be extended and redefine.
Region merging technique module：For according to the proximity relations between each initial area-of-interest according to certain principle to phase
Close initial area-of-interest gradually to be merged, form a number of unit interested；Wherein, the embodiment of the present application is to correlation
The combination principle that initial area-of-interest is gradually merged is：According to the proximity relations between each initial area-of-interest,
According to principle from the close-by examples to those far off, gradually will be initial apart from closest at least two or more than two using hierarchy clustering method
Area-of-interest is merged, and forms a number of unit interested；And then pay close attention to the wagon flow between each unit interested
OD information.Wherein, produce single clustering schemes different from other cluster modes, what hierarchical clustering method was produced is a cluster layer
It is secondary, different degrees of merging is carried out to initial area-of-interest in the embodiment of the present application.It is former in view of merging from the close-by examples to those far off
Then, the embodiment of the present application is constantly merged using clustering method from bottom to top to closest initial area-of-interest,
Form new unit interested, until reaching sets target untill.
Further, region merging technique module is specifically included to the merging that related initial area-of-interest is gradually merged：
a：Each initial area-of-interest is classified as a class；
b：It is initial by closest at least two or more than two according to the proximity relations between initial area-of-interest
Area-of-interest is merged, and forms new unit interested；
c：The proximity relations between new unit interested and other initial area-of-interests is recalculated, and according to new
Proximity relations between unit interested and other initial area-of-interests by new unit interested with apart from it is closest extremely
Few two or more initial area-of-interests are merged, until meeting specific cluster condition untill；Wherein, level
The calculating of the proximity relations in cluster process between the new unit interested for being formed and other initial area-of-interests can direct shadow
Ring the result to cluster.According to the difference of distance calculating method, hierarchical clustering algorithm is divided into SL methods (single-linkage, list
Join algorithm), CL methods (complete-linkage, full-join algorithm) and AL methods (average-linkage, average level
Algorithm) three types, wherein, class spacing is the minimum value of distance between classification inner element in SL methods, and the class spacing of CL methods
Corresponding is maximum, and the class spacing of AL methods is substituted with the average level of distance between classification inner element, general to use
Intermediate value is represented.Due to AL methods more can be between reflecting regional overall distance, the embodiment of the present application preferably uses AL methods, but at this
In application other embodiment, SL methods and CL methods are equally applicable to.
Second computing module：Imaged needed for vehicle OD information monitorings between each unit interested after merging for calculating
The quantity of head；The calculation of camera quantity is：First, according to the annexation of road network, the institute's thoughts calculated after merging are emerging
The association section of interesting unit, and the camera quantity according to required for the situation in association section is calculated, road is associated by these
The monitoring location of section sets camera, and associating section to these by camera is monitored, you can realize unit interested
Between vehicle OD information extraction.In the embodiment of the present application, setting single camera can only monitor on road from camera court
To direction running and carry out the car plate of all automobiles, and road in survey region does not have the road of one-way trip, this kind of feelings
Under condition, the vehicle OD information monitorings in every association section at least need 2 cameras.
Secondly, if the section of all directions of intersection belongs to the association section of unit interested, due to car
Flow of the flow in road junction position is conservation, and the vehicle OD information in the one of section of intersection can lead to
The vehicle OD information for crossing other directions is estimated to obtain, therefore, the camera in the section is redundancy, can be removed.Please specifically join
Fig. 3 is read, is the intersection information of vehicles assessment schematic diagram of the embodiment of the present application.Wherein, IA and OA represent vehicle from A respectively
Direction enters and goes out, and！IA and！OA represents that vehicle does not enter and go out from A directions respectively, and other are analogized.So, if
The vehicles while passing situation in tri- directions of known A, B and C, can calculate the vehicles passing in and out information in D directions.Circular is such as
Under：
ID=(OA∪OB∪OC)∩(！IA∩！IB∩！IC) (1)
OD=(IA∪IB∪IC)∩(！OA∩！OB∩！OC) (2)
The vehicle pass-through situation that camera section is not configured in intersection can be calculated by formula (1) and (2), so that
Further reduce the quantity of camera.And the situation at other types crossing, can be calculated according to this principle.Can manage
Solution, the computational methods not limited to this of camera quantity, can also specifically be extended according to actual needs in the embodiment of the present application.
As a result judge module：Whether the quantity for judging required camera exceedes restrictive condition, if required camera
Quantity exceed restrictive condition, then carry out region merging technique again through region merging technique module, until required camera quantity not
Untill restrictive condition；In device, according to the camera quantity being calculated and restrictive condition (the camera number of actual budget
Amount) compare, if meeting corresponding pre-conditioned, stop union operation, the association section of unit interested after merging
On monitoring location camera is set, so as in the case of camera limited amount so that between unit interested
Vehicle OD information can be caused to cover ability is maximized.And support the system of camera set location scheme under different camera quantity restrictive conditions
Fixed and selection, the fine degree of the vehicle OD information extractions that can be used for comparing under different schemes, are conducive to formulating more science
The goal programming of rational practical application.
In order to verify the feasibility of the application, following examples are carried out by research case of Dapeng peninsula of Shenzhen City region
Experiment.Dapeng peninsula possesses multiple natural scenic spots, while also including town dweller accumulation regions and villages within the city.According to Dapeng peninsula
Situation, the embodiment of the present application selectes the types such as natural scenic spot, villages within the city and town dweller's cell for initial region of interest
Domain, and the purpose that camera is laid is then to monitor the wagon flow OD situations between each initial area-of-interest.According to this Shen
The method to set up of wagon flow OD information monitoring equipment that please be in embodiment, respectively in given 10,30 and 50 feelings of camera
Under condition, the final amalgamation result of corresponding initial area-of-interest and need to set camera and be observed the section of information of vehicles
As shown in figure 5, being the embodiment of the present application in the result schematic diagram of Dapeng peninsula regional experiment.Above-mentioned experimental result is intuitively given
Under the restrictive condition of the camera of varying number, the section of required monitoring when being set towards the camera of wagon flow OD information,
The foundation that the crossing of respective stretch or on the way position can be set as camera.
The fine journey of method to set up and system the reduction area-of-interest of the car flow information monitoring device of the embodiment of the present application
Degree, to reduce the demand of monitoring device so that the ability to the vehicle OD information can be caused to cover between area-of-interest is maximum, it is to avoid
Required number of devices overcomes and is currently based in road traffic features information monitoring equipment more beyond the situation of current budget
Concern key road segment, so as to the problem for causing vehicle OD information to be slipped；Meanwhile, the application can enter according to the camera of varying number
The formulation and optimization of the row plan of establishment, the fine degree for comparing the vehicle OD information extractions under different schemes are conducive to system
The goal programming of fixed more scientific and reasonable practical application.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the application.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can in other embodiments be realized in the case where spirit herein or scope is not departed from.Therefore, the application
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The scope most wide for causing.
Claims (10)
1. a kind of method to set up of car flow information monitoring device, it is characterised in that including：
Step a：It is determined that initial area-of-interest, and calculate the proximity relations between each initial area-of-interest；
Step b：Described each initial area-of-interest is gradually merged according to the proximity relations, is obtained new interested
Unit；
Step c：The quantity of monitoring device needed for information of vehicles monitoring between the calculating new unit interested, and according to calculating
Result carries out the setting of the monitoring device.
2. the method to set up of car flow information monitoring device according to claim 1, it is characterised in that in the step a,
The proximity relations calculated between each initial area-of-interest includes：According to the locus of each initial area-of-interest
Feature and the relation of road network, set up the annexation of initial area-of-interest and given road network；And combine initial area-of-interest
Locus feature calculation any two or more than two initial area-of-interests between proximity relations.
3. the method to set up of car flow information monitoring device according to claim 2, it is characterised in that root in the step b
Described each initial interest region is gradually merged according to proximity relations, including：According between each initial area-of-interest
Proximity relations, according to principle from the close-by examples to those far off, using hierarchy clustering method gradually by apart from closest at least two or two
Initial area-of-interest more than individual is merged.
4. the method to set up of car flow information monitoring device according to claim 3, it is characterised in that root in the step b
Described each initial interest region is gradually merged according to proximity relations, is also included：Recalculate new unit interested with
Proximity relations between other initial area-of-interests, and according between new unit interested and other initial area-of-interests
Proximity relations new unit interested is entered with apart from least two or more than two closest initial area-of-interests
Row merges.
5. the method to set up of car flow information monitoring device according to claim 1, it is characterised in that in the step c,
The quantity of monitoring device needed for information of vehicles monitoring includes between the new unit interested of the calculating：Monitoring device needed for judging
Quantity whether exceed restrictive condition, if the quantity of required monitoring device exceed restrictive condition, re-execute step b；Its
In, the restrictive condition is the quantity of actual monitoring equipment.
6. a kind of setting system of car flow information monitoring device, it is characterised in that including：
Target determination module：For determining initial area-of-interest；
First computing module：For calculating the proximity relations between each initial area-of-interest；
Region merging technique module：For gradually being merged to described each initial area-of-interest according to the proximity relations, obtain
To new unit interested；
Second computing module：Number for calculating monitoring device needed for information of vehicles monitoring between the new unit interested
Amount, and the setting of the monitoring device is carried out according to result of calculation.
7. the setting system of car flow information monitoring device according to claim 6, it is characterised in that described first calculates mould
Block is used to calculate the proximity relations between each initial area-of-interest, specially：According to the sky of each initial area-of-interest
Between position feature and road network relation, set up the annexation of initial area-of-interest and given road network；And combination initially feels emerging
Proximity relations between the locus feature calculation any two or more than two initial area-of-interests in interesting region.
8. the setting system of car flow information monitoring device according to claim 7, it is characterised in that the region merging technique mould
Block is used to gradually merge described each initial interest region according to proximity relations, including：It is initial interested according to each
Proximity relations between region, according to principle from the close-by examples to those far off, using hierarchy clustering method gradually by apart from it is closest at least
Two or more initial area-of-interests are merged.
9. the setting system of car flow information monitoring device according to claim 8, it is characterised in that the region merging technique mould
Block is used to gradually merge described each initial interest region according to proximity relations, also includes：Recalculate new sense emerging
Proximity relations between interesting unit and other initial area-of-interests, and it is initial interested with other according to new unit interested
New unit interested is initially felt emerging by the proximity relations between region with apart from closest at least two or more than two
Interesting region merges.
10. the method to set up of car flow information monitoring device according to claim 6, it is characterised in that also include：Result is sentenced
Disconnected module, the result judge module is used to judge whether the quantity of required monitoring device to exceed restrictive condition, if required prison
The quantity of measurement equipment exceedes restrictive condition, then proceed region merging technique by region merging technique module；Wherein, the restrictive condition
It is the quantity of actual monitoring equipment.
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