CN109711600A - Route selection evaluation system and method based on oblique photograph threedimensional model - Google Patents
Route selection evaluation system and method based on oblique photograph threedimensional model Download PDFInfo
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Abstract
This application provides a kind of route selection evaluation system and method based on oblique photograph threedimensional model, the system comprises: data acquisition module, for basic data needed for obtaining route selection；Characteristic extracting module, for extracting characteristic from basic data；Parameter setting module, for determining the fuzzy membership relationship and its weight of characteristic Yu default route selection evaluation index according to expert database；Fuzzy synthesis module, for calculating the evaluation index of each optional route design scheme, generating the evaluation score of each scheme, optimum scheme comparison according to above-mentioned fuzzy membership relationship and its weight；Expert database is used for memory space environmental knowledge, design specification knowledge and route selection expertise.The application goes out best route scheme by constructing iterative estimation model solution, and solving the problems, such as can not the optimal variant projects of location of intelligent selection when route selection faces complicated society, economy, engineering factor in the process.
Description
Technical field
This application involves highway layout assessment technique fields, particularly, are related to a kind of based on oblique photograph threedimensional model
Route selection evaluation system and method.
Background technique
The selection and design of highway geometry scheme are the key links during highway construction, directly affect highway construction
Construction investment, environmental protection and traffic quality, to investment, the economy and society development in cities and towns, environmental protection and people along the line
The security of the lives and property of the people also all has important influence.Nowadays highway is still carried out by expert mostly in the route selection decision phase
The investigation of part way, but when carrying out Practical Project construction after route selection has been determined, various problem is often encountered,
The engineering actually built up is caused to tend not to just damage in advance to the predetermined time limit.Actually damaged due to caused by Highway Geological Disaster
The overwhelming majority accounted in practical damage highway is ruined, and the highway largely damaged can be during designing route selection
Avoid disaster hotspots.During Route Design, since the limitation of highway route design means and the key technical indexes selection lack
Weary operable program and method are often anticipated by builder or designer's subjectivity when handling the relationship between each constrained objective
Knowing influences, and optimizes some realization of goal, and ignores the influence to other targets.At the same time, past during route selection
It is relatively more toward factor in need of consideration, however it is limited by the scarcity of related data, units concerned are often difficult to find route selection in time
The problem of process.The case where there are data barriers due to industry, even if there is also mismatch or portions for related data fusion
The case where dividing missing, effective directive function cannot be played not only for decision, it is also possible to mislead designer to a certain extent.
Therefore the more sound intelligent highway route selection decision system of construction is examined at the needs of designer by computer-related technologies synthesis
Consider various factors, intelligently makes the necessity that route selection decision is era development.
In intelligent route selection field, relative application software quality is very different, lacks maturation and can obtain extensively
The solution of approval.By taking the road traffics aided design system such as HintCAD, EICAD as an example, it is mainly used for improving artificial quasi-
On the operating efficiencies and quality of achievement of deterministic processes such as calculating, drawing, tabulation after flat, the vertical scheme of fixed line, and about original
Beginning design parameter acquisition, selection for route program, result of design evaluation and optimization etc., then lack to designer's man-machine interactive
In due course decision support, can only be by way of manual evaluation, there are heavy workload, reliability is low, the mobility that had both been fruitful is low
Etc. many deficiencies.
Summary of the invention
The application provides a kind of route selection evaluation system and method based on oblique photograph threedimensional model, existing for solving
Have technology the acquisition of original design parameter, selection for route program, result of design evaluation in terms of can not be mentioned for designer
The problem of in due course decision support.
A kind of route selection evaluation system based on oblique photograph threedimensional model disclosed in the present application, including data acquisition mould
Block, characteristic extracting module, parameter setting module, fuzzy synthesis module and expert database, in which: the data acquisition module
For basic data needed for obtaining route selection；The basic data includes that oblique photograph device is original in planning region
It takes photo by plane surveying and mapping data, traffic demand data and a plurality of optional route design scheme；The characteristic extracting module is used for from described
Characteristic is extracted in the basic data that data acquisition module obtains；The characteristic includes three extracted from surveying and mapping data
Dimension module data, the traffic vector data extracted from traffic demand data, and the road extracted from design schemes of route
Planar line parameter, road Cross Section design parameter and profile of road design parameter；The parameter setting module is used for according to specially
Family's database determines the fuzzy membership relationship and its weight of characteristic Yu default route selection evaluation index；The default public affairs
Road route selection evaluation index includes one in economic benefits indicator, engineering index of difficulty, environmental element index and social benefit index
Kind is a variety of；The characteristic and default route selection that the fuzzy synthesis module is used to be determined according to the parameter setting module
The fuzzy membership relationship and its weight of evaluation index calculate the evaluation index of each optional route design scheme, raw
At the evaluation score of each scheme, optimum scheme comparison；The expert database is known for memory space environmental knowledge, design specification
Know and route selection expertise.
Preferably, the parameter setting module determines the weight of each evaluation index using analytic hierarchy process (AHP), specifically includes:
The judgment matrix two-by-two between evaluation index is established according to expert database；The feature vector for calculating the judgment matrix, by institute
State weight of the value of feature vector as corresponding evaluation index.
Preferably, the economic benefits indicator includes design and construction cost, operation maintenance cost, labor cost, income
Rate and interim one or more of investment repayment；The engineering index of difficulty includes bad landforms area, mileages of transport route, bridge tunnel number
Amount, complicated construction section and one of tear down and reconstruct project or a variety of；The environmental element index includes eco-environmental impact, humanity
One of environment influence, cultural environment influence, living environment influence and policy environment influence are a variety of；The social benefit refers to
Mark includes one of service group, approach county and town, road cooperation linking, transport need and sustainable development or a variety of.
Preferably, the three-dimensional modeling data includes digital terrain model, digital elevation model, digital surface model sum number
One of word orthography is a variety of.
Preferably, the space environment knowledge is including landform, geology and hydrology space environment and highway geometry along the line not
Space characteristics rule, Spatial Association Rule, spatial sequence rule and the space behavior mode generated under homeomorphism relationship；It is described
Design specification knowledge include road plane standard, vertical section standard, cross section standard, bridges and culverts standard, level-crossing standard and
Subgrade and pavement standard；The route selection expertise is the knowledge related with experience that long-term engineering practice is formed.
Preferably, further includes: result output module, for being set to the data acquisition module, characteristic extracting module, parameter
The evaluation result for each optional route scheme that the intermediate result and the fuzzy synthesis module for setting module generation generate is opened up
Show.
A kind of route selection evaluation method based on oblique photograph threedimensional model disclosed in the present application executes the method
System be provided with expert database, the expert database is used for memory space environmental knowledge, design specification knowledge and route selection
Expertise；The described method includes: basic data needed for obtaining route selection；The basic data includes oblique photograph device
Original surveying and mapping data of taking photo by plane in planning region, traffic demand data and a plurality of optional route design scheme；From the base
Characteristic is extracted in plinth data；The characteristic includes the three-dimensional modeling data extracted from surveying and mapping data, is needed from traffic
The traffic vector data extracted in data is sought, and the road plane line parameter extracted from design schemes of route, road are cross-section
Face design parameter and profile of road design parameter；Determine that characteristic refers to the evaluation of default route selection according to expert database
The weight of target fuzzy membership relationship and each evaluation index；The default route selection evaluation index includes that economic benefit refers to
One of mark, engineering index of difficulty, environmental element index and social benefit index are a variety of；According to the characteristic and in advance
If the fuzzy membership relationship of route selection evaluation index and the weight of each evaluation index, to each optional route design side
The evaluation score of case is calculated, optimum scheme comparison.
Preferably, the weight of each evaluation index is determined using analytic hierarchy process (AHP), is specifically included: being built according to expert database
Judgment matrix two-by-two between vertical evaluation index；The feature vector for calculating the judgment matrix makees the value of described eigenvector
For the weight of corresponding evaluation index.
Preferably, the method also includes: show that basic data in above-mentioned steps obtains result, characteristic extracts knot
The evaluation of result, evaluation criterion weight definitive result and each optional route design scheme is arranged in fruit, fuzzy membership relationship
Score calculated result.
Disclosed herein as well is a kind of storage mediums for being recorded on the program for executing the above method.
Compared with prior art, the application has the following advantages:
The route selection side based on oblique photograph threedimensional model that the application preferred embodiment provides in view of the deficiencies of the prior art
In case, by combining threedimensional model, traffic information with design schemes of route, building " nature-economy-traffic " three factors are more
It overlaps for assessment models, meets multiple constraint condition, more initial schemes solve best route scheme, and be directed to more evaluation indexes
It is analyzed, is most passed through to face intelligently to generate when complicated society, economy, engineering factor during solving highway prospecting route selection
It helps the problem of reasonable variant projects of location, proposes and refer to from data to the integrated programme of intelligent highway wire selection system meeting engineering
Project cost is reduced in the case of target, improves construction efficiency.
In addition, the application can intuitively express distribution of strata rule by introducing, deepen the understanding of base looks over the ground, to work
The design and construction link of Cheng Jianzhu have the dimensional Modeling Technology of very big directive significance, can not only be provided based on threedimensional model
Higher precision three-dimensional space surveying and mapping data improve design link homework precision, can also be provided more for the evaluation of design scheme
More reference frames, so that it is all to solve that heavy workload, reliability existing for the method for manual evaluation are low, the mobility that had both been fruitful is low etc.
It is mostly insufficient.
Detailed description of the invention
The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as the limitation to the application.And whole
In a attached drawing, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the flow chart of route selection evaluation method of the application first embodiment based on oblique photograph threedimensional model；
Fig. 2 is that the composed structure of route selection evaluation system of the application second embodiment based on oblique photograph threedimensional model is illustrated
Figure；
Fig. 3 is that the frame structure of route selection evaluation system of the application 3rd embodiment based on oblique photograph threedimensional model is illustrated
Figure；
Fig. 4 is route selection evaluation index composition schematic diagram in system embodiment shown in Fig. 3；
Fig. 5 is the Fuzzy evaluation mode schematic diagram in system embodiment shown in Fig. 3.
Specific embodiment
In order to make the above objects, features, and advantages of the present application more apparent, with reference to the accompanying drawing and it is specific real
Applying mode, the present application will be further described in detail.
In the description of the present application, it is to be understood that the terms "include", "comprise" and similar terms should be understood that
It is open term, i.e., " including/including but not limited to ".Term "based" is " being based at least partially on "." one implements term
Example " expression " at least one embodiment "；Term " another embodiment " expression " at least one other embodiment ".Other terms
Related definition provides in will be described below.
Referring to Fig.1, route selection evaluation method of the application first embodiment based on oblique photograph threedimensional model is shown
Process.The system for executing the method is provided with to be known for memory space environmental knowledge, design specification knowledge and route selection expert
The expert database of the data informations such as knowledge；When it is implemented, above-mentioned space environment knowledge can be along landform, geology and the hydrology
Space characteristics rule that space environment and highway geometry generate under different topology relationship, Spatial Association Rule, spatial sequence rule
Then and the spatial knowledges such as space behavior mode；Design specification knowledge mainly includes road plane standard, vertical section standard, cross-section
Face standard, bridges and culverts standard, level-crossing standard and subgrade and pavement standard etc. have the standard criterion of effect of contraction；Route selection expert
It is related with experience that knowledge can practice the related route plan to be formed generation, optimization, design, evaluation, decision etc. for permanent worker's journey
Knowledge.This preferred embodiment method includes:
Step S101: basic data needed for obtaining route selection；
Basic data in this preferred embodiment scheme includes a plurality of optional route design scheme of preliminary planning early period, using inclining
Original surveying and mapping data of taking photo by plane that oblique camera is taken photo by plane in planning region is related to a variety of vector numbers of specific transport need
Accordingly and other can be used for data of the route selection according to support.These multi-source heterogeneous data constitute the original input data of scheme, altogether
With influence route selection result.
Step S102: characteristic is extracted from the basic data；
The characteristic includes that the three-dimensional modeling data of generation is extracted from surveying and mapping data, is extracted from traffic demand data
Traffic vector data, and the road plane line parameter, road Cross Section design parameter and the road that are extracted from design schemes of route
The highway layout parameters such as road vertical alignment design parameter.
When it is implemented, above-mentioned three-dimensional modeling data can be digital terrain model (DTM, Digital Terrain
Model), digital elevation model (DEM, Digital Elevation Model), digital surface model (DSM, Digital
Surface Model) and one of digital orthoimage (DOM, Digital Orthophoto Model) or a variety of.
Step S103: the fuzzy membership of characteristic Yu default route selection evaluation index is determined according to expert database
The weight of relationship and each evaluation index；
Default route selection evaluation index in this embodiment scheme according to the actual demand of programme path and can be grasped
Data information is chosen, and can specifically include economic benefits indicator, engineering index of difficulty, environmental element index and social benefit index
One of or it is a variety of.
Wherein, above-mentioned economic benefits indicator includes design and construction cost, operation maintenance cost, labor cost, earning rate
With the investment repayment phase etc.；Engineering index of difficulty include bad landforms area, mileages of transport route, bridge tunnel quantity, complicated construction section and
Tear down and reconstruct project etc.；Environmental element index includes eco-environmental impact, humanistic environment influences, cultural environment influences, living environment shadow
Loud and policy environment influence etc.；Social benefit index include service group, approach county and town, road cooperation linking, transport need and
Sustainable development etc..
Every kind of achievement data value can be the comments such as " more ", " few ", " good ", " poor ", or objective numerical value, if not
It needs or the item data can not be obtained then to be recorded as null value in systems, these multi-source heterogeneous data will pass through fuzzy synthetic method
The fusion for carrying out data, selects optimal design schemes of route.
Step S104: according to the fuzzy membership relationship of the characteristic and default route selection evaluation index and every
The weight of a evaluation index calculates the evaluation score of each optional route design scheme, optimum scheme comparison.
In a further preferred embodiment, the method can also include: and be chosen wherein valuable according to evaluation result
Information be shown.It such as can only show optimal case and its evaluation score, can also show the totality of all optinal plans
The score of score and each index is evaluated, result can also be obtained to the basic data in above-mentioned steps, characteristic is extracted
As a result, the pilot process data such as fuzzy membership relationship setting result, evaluation criterion weight definitive result are shown.
In another preferred embodiment, the weight of above-mentioned each evaluation index can be determined using analytic hierarchy process (AHP), specifically
It include: the judgment matrix two-by-two established according to expert database between evaluation index；The feature vector of the judgment matrix is calculated,
Using the value of described eigenvector as the weight of corresponding evaluation index.
For the various method embodiments described above, simple in order to describe, therefore, it is stated as a series of action combinations, but
It is that those skilled in the art should be aware of, the application is not limited by the described action sequence, because according to the application,
Certain steps can serially or simultaneously be executed using other；Secondly, those skilled in the art should also know that, the above method is implemented
Example belongs to preferred embodiment, necessary to related actions and modules not necessarily the application.
Disclosed herein as well is a kind of storage mediums for being recorded on the program for executing the above method.It is described to deposit
Storage media includes any mechanism being configured to by the readable form storage of computer (by taking computer as an example) or transmission information.Example
Such as, storage medium includes read-only memory (ROM), random-access memory (ram), magnetic disk storage medium, optical storage media, sudden strain of a muscle
Fast storage medium, electricity, light, sound or transmitting signal (for example, carrier wave, infrared signal, digital signal etc.) of other forms etc..
Referring to Fig. 2, route selection evaluation system of the application second embodiment based on oblique photograph threedimensional model is shown
Composed structure schematic diagram, including data acquisition module 21, characteristic extracting module 22, parameter setting module 23, fuzzy synthesis mould
Block 24 and expert database 20, in which:
Data acquisition module 21 is for basic data needed for obtaining route selection；The basic data includes coming from different moneys
The different route selection of source, structure supports data, such as surveys and draws number using original take photo by plane that oblique photograph device is shot in planning region
According to being related to a variety of traffic vector datas of specific transport need, a plurality of optional route design scheme of preliminary planning early period etc..
Characteristic extracting module 22 is for extracting characteristic from the basic data that data acquisition module 21 obtains；It is therein
Characteristic includes that the three-dimensional modeling data extracted from surveying and mapping data (can be digital terrain model, digital elevation model, number
One of word surface model and digital orthoimage are a variety of), the traffic vector data extracted from traffic demand data, with
And road plane line parameter, road Cross Section design parameter and the profile of road extracted from a plurality of optional route design scheme
The design parameters such as design parameter.
Parameter setting module 23 is used to determine characteristic and default route selection evaluation index according to expert database 20
Fuzzy membership relationship and its weight；Above-mentioned default route selection evaluation index can be economic benefits indicator, engineering difficulty
One of index, environmental element index and social benefit index are a variety of.
Above-mentioned economic benefits indicator can be design and construction cost, operation maintenance cost, labor cost, earning rate and throwing
Provide the one or more of period of investment return；Engineering index of difficulty can be bad landforms area, mileages of transport route, bridge tunnel quantity, complexity and apply
Work section and tear down and reconstruct one of indexs such as project or a variety of；Environmental element index can be eco-environmental impact, humanistic environment
One of indexs such as influence, cultural environment influence, living environment influences and policy environment influences are a variety of；Social benefit index
It can be one of indexs such as service group, approach county and town, road cooperation linking, transport need and sustainable development or more
Kind.
When it is implemented, can determine the weight of each evaluation index using analytic hierarchy process (AHP), specifically include: according to expert
Judgment matrix two-by-two between Database evaluation index；The feature vector for calculating the judgment matrix, by the feature to
Weight of the value of amount as corresponding evaluation index.
The characteristic and advance route selection that fuzzy synthesis module 24 is used to be determined according to parameter setting module 23 are evaluated
The fuzzy membership relationship and its weight of index calculate the evaluation index of each optional route design scheme, generate each
The evaluation score of scheme, optimum scheme comparison.
Expert database 20 is for space environment knowledge, design specification knowledge and choosing needed for storing parameter setting module 23
Line expertise etc.；
Wherein, above-mentioned space environment knowledge can be along landform, geology and hydrology space environment and highway geometry opened up in difference
The spaces such as the space characteristics rule generated under relationship, Spatial Association Rule, spatial sequence rule and space behavior mode are flutterred to know
Know；Design specification knowledge mainly includes road plane standard, vertical section standard, cross section standard, bridges and culverts standard, level-crossing mark
The standard criterion with effect of contraction such as quasi- and subgrade and pavement standard；Route selection expertise can be practiced to be formed for permanent worker's journey
The generation of related route plan, optimization, design, evaluation, the knowledge related with experience such as decision.
In a further embodiment, the system can also include:
As a result output module 25, the centre for being generated to the data acquisition module, characteristic extracting module, parameter setting module
As a result, and the evaluation result of each optional route scheme that generates of the fuzzy synthesis module be shown.
Referring to Fig. 3, route selection evaluation system of the application 3rd embodiment based on oblique photograph threedimensional model is shown
Configuration diagram, overall framework includes data Layer, characteristic layer, model layer, evaluation layer and application layer, in which:
Data Layer includes each section basic data required for system, as preliminary planning early period a plurality of optional route scheme, incline
Original take photo by plane surveying and mapping data of the oblique camera in planning region, a variety of traffic vector datas for being related to specific transport need and
Other can provide the data for route selection according to support, these data are the initial parameter data of model.
Characteristic layer includes: the highway layouts such as the road plane line for including and transverse and longitudinal section design ginseng in highway layout scheme
Number；Three-dimensional 4D model (digital terrain model, digital elevation model, digital surface model, the number that oblique photograph surveying and mapping data provides
Word orthography)；Traffic vector data then constitutes the transport need of various aspects；It further comprises and is extracted by other data simultaneously
The related feature come, these multi-source heterogeneous characteristic informations constitute being originally inputted for model, and common image influences the selection of route.
Model layer: merging the characteristic of characteristic layer by way of data/address bus, makes Various types of data unified
It is analyzed under scale.The impact factor of each feature is analyzed with reference to expert database and analytic hierarchy process (AHP), to be converted into fuzzy
Degree of membership relationship converts quantitative relationship for the complicated qualitative relationships of route selection further according to Fuzzy Comprehensive Method.The application above by
The process of candidate variant projects of location is found to Study on Relative Factors, mould is quantitatively evaluated in also referred to as " nature-economy-traffic " three factors
Type.
Evaluate layer: according to the selected evaluation index of fuzzy synthesis, for economic benefit, engineering difficulty, environmental element and
Four aspects of social benefit are evaluated and are given a mark to route.
Application layer: for the different demands of engineering in practice, the multifactor quantitative assessment result that model layer is constructed by
It is integrated according to weight, generates final variant projects of location.
In the following, respectively with regard to the building of evaluation index, the establishment strategy of expert database and based on the public affairs of analytic hierarchy process (AHP)
Road variant projects of location Fuzzy Synthetic Evaluation is illustrated.
1. the building of evaluation index
Evaluation index is used to provide Appreciation gist for fuzzy synthetic method: being integrated according to the score of all kinds of evaluation indexes and weight
Evaluate the total score of each design route.According to Highway Design experience and actual demand, system solution is mainly from economy
Benefit, engineering difficulty, environmental element and four broad aspect of social benefit evaluate highway alignment design scheme, each aspect
Again include several events, is accepted or rejected according to the data of investigation early period and practical emphasis.
Specific evaluation index data can be the comments such as " more ", " few ", " good ", " poor ", or objective numerical value,
It is recorded as null value in systems if not needing or the item data can not be obtained, these multi-source heterogeneous data will pass through fuzzy synthesis
Method carries out the fusion of data, selects optimal design schemes of route.
Evaluation index in application scheme can refer to the building of evaluation index composition figure shown in Fig. 4.
2. the establishment strategy of expert database
Expert database handles redundant data using data mining technology, carries out information management, realizes knowledge using inference mechanism
Discovery, storage and utilization, to instruct in many aspects process and method.Application in Road Design field, specially
Family's database can provide effective approach for realization route selection intelligence, the accuracy of knowledge acquisition, reasoning from logic conjunction
Rationality, comprehensive and decision the science of attribute information are directly related to the quality of highway alignment.
It is had a characteristic that in the expert database of system solution
(1) decomposability of design objective
In relevant specific design objective on completing a certain level, a certain range of knowledge is generally only used, these knowledge
Specifically being reflected as designer takes one group of inference step and method for solving in a certain stage of design process.
Route selection knowledge is classified by subtask, and each subtask corresponds to the respective sub- knowledge base of one or more, adopts
When solving each subproblem with reasoning, just only need to search for limited relevant sub- knowledge base, to improve the search effect of inference machine
Rate.
(2) polymorphic heterogeneity
Route selection domain knowledge is with text, figure, symbol, data and deposits, and wide variety, structure is complicated.Including highway route design
Knowledge, evaluation DECISION KNOWLEDGE, domain knowledge, expertise knowledge, further relate to various technical standards, engineering picture library, handbook, figure
Table, formula, basic database, method base etc..Therefore must be according to knowledge the characteristics of, set reasonable expression pattern with it is corresponding
Inference mechanism.
(3) ambiguity of knowledge expression
Route selection knowledge not only has the characteristics that magnanimity, but also has uncertainty, risk, route such as geological environment
Linear safety etc. has ambiguity, be mainly manifested in the following aspects: the ambiguity of basic data, computation model
The ambiguity of ambiguity and decision.Therefore, knowledge base fully takes into account these uncertainties.
In conjunction with computer data management and programming technique, a kind of effective countermeasure that route selection knowledge base uses is: with choosing
The each task of line design process is object definition data base class, calls various hypertext datas to prepare software, by figure, text, shadow
The hypertext informations such as picture are input in hypertext data library, with Object Oriented Model Making Technology, it are made to encapsulate and inherit, are become independent
Knowledge segment independent calling is carried out to it when to use and by their modularizations, targeted.
This system is mainly used for the multivariant comparation and assessment of highway construction, does not consider the thin portion problem of route linear design, in order to
It is convenient for stratification processing and modularized design, considers the influence factor of route selection, from the side of route selection knowledge acquisition
From the point of view of formula, space environment knowledge, design specification knowledge, route selection expertise three categories can be divided into.
(1) space environment knowledge
Space environment knowledge refer to along the space environments such as landform, geology, the hydrology and highway geometry under different topology relationship, institute
The spatial knowledges such as space characteristics rule, Spatial Association Rule, spatial sequence rule and the space behavior mode of generation.
It shows in three factor multiple iteration assessment models on the fusion calculation of multiple and distributing sources, uses in the present system
It is inputted with converting the relevant feature of model for the indirect volume of traffic.
(2) design specification knowledge
Standard criterion is a kind of special knowledge form, it is highway route design process different phase and design result (including stage
Property result) constraint and condition.Wherein both included stringent theoretical guidance and empirical requirement, and had also included corresponding policy method
Rule.Standard criterion is the control on macroeconomic significance to design behavior, all there is constraint to make design any in its coverage area
With and engineering design important evidence, mainly include flat normal, vertical section standard, cross section standard, bridges and culverts standard, flat
Face intersects standard and subgrade and pavement standard etc..
During the combination of the normative audit and basic road parameters feature that show road scheme in the present system calculates, such as
Data needed for calculating the model not provided directly indirectly according to highway layout file.
(3) route selection expertise
Route selection domain knowledge refers in long-term engineering practice formation, is present in designer's brains or with technical standard
The knowledge related with experience such as existing related route plan generation, optimization, design, evaluation, decision are standardized, especially for mould
The uncertain problems of paste.
It is shown in fuzzy synthesis and analytic hierarchy process (AHP) in the present system and provides the parameter and weight of dynamic adjustment for model.
3. the route selection scheme Fuzzy comprehensive evaluation based on analytic hierarchy process (AHP)
It is theoretical that the core evaluation method of this system is originated from fuzzy synthesis, by using degree of membership relationship come the numerous evaluations of comprehensive consideration
Influence of the index for evaluation result, and the evaluation result one quantization score that can be compared is given by quantitative analysis.It is considering
Analytic hierarchy process (AHP) is used when the weight of evaluation index.
Analytic hierarchy process (AHP) is a kind of Multi-objective Decision Analysis method, and qualitative and quantitative target is unified in a model by it
In, it not only can be carried out quantitative analysis, but also can be carried out qualitative functional evaluation.
Judgment matrix two-by-two rule of thumb is established with expert database knowledge, to scientifically judge the importance of each index
Degree obtains satisfied weighted value, the virtual condition of reflection assessment object.
As shown in figure 5, this method uses two-level appraisement model, by using operator to establishing two-level appraisement space, it is more
A operator considers that can lay particular emphasis on respectively the contribution of single evaluation index and comprehensive multiple evaluation indexes.
For this method using the strategy of degree of membership and weight dynamic adjustment, this, which allows for system, should have versatility, without
Be with the point that is stressed when highway alignment design it is mutually different, it is natural should be according to reality when determining subordinating degree function and weight
It needs condition for peace limitation dynamic to adjust, the value of these dynamic parameters is instructed by experts database.
After determining evaluation index used, optional program is sequentially input into model, that is, produces the evaluation of each side's case
Score, optimum scheme comparison.
The advantageous effects of application scheme include:
Existing the degree of automation is low during having fully considered Current Highway design route selection, and the big deficiency of subjectivity improves
Design efficiency shortens project amount；
It is combined by oblique photograph threedimensional model with highway layout route, vividly shows design scheme, be easy to calculate automatically and apply
Cost and workload in work；
It is combined by analytic hierarchy process (AHP) and fuzzy synthesis, it is quantitative using complicated qualitative question is converted in relation to evaluation index
Problem is scientifically that each impact factor divides weight with reference to expert knowledge library, reduces getting sth into one's head property, examines from many aspects synthesis
Consider the advantage and disadvantage of each scheme.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.Described above is
System and embodiment are only schematical, wherein the module as illustrated by the separation member may or may not be
It is physically separated, both can be located in one place or may be distributed over multiple network units.It can be according to actual
It needs that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not
In the case where making the creative labor, it can understand and implement.
Specific examples are used herein to illustrate the principle and implementation manner of the present application, and above embodiments are said
It is bright to be merely used to help understand the present processes and its core concept；At the same time, for those skilled in the art, foundation
The thought of the application, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification is not
It is interpreted as the limitation to the application.
Claims (10)
1. a kind of route selection evaluation system based on oblique photograph threedimensional model, which is characterized in that including data acquisition module,
Characteristic extracting module, parameter setting module, fuzzy synthesis module and expert database, in which:
The data acquisition module is for basic data needed for obtaining route selection；The basic data includes oblique photograph dress
Set the original surveying and mapping data of taking photo by plane in planning region, traffic demand data and a plurality of optional route design scheme；
The characteristic extracting module is for extracting characteristic from the basic data that the data acquisition module obtains；The spy
Levying data includes the three-dimensional modeling data extracted from surveying and mapping data, the traffic vector data extracted from traffic demand data,
And road plane line parameter, road Cross Section design parameter and the profile of road design ginseng extracted from design schemes of route
Number；
The parameter setting module is used to determine the mould of characteristic Yu default route selection evaluation index according to expert database
Paste degree of membership relationship and its weight；The default route selection evaluation index includes economic benefits indicator, engineering index of difficulty, ring
One of border element index and social benefit index are a variety of；
The characteristic and default route selection that the fuzzy synthesis module is used to be determined according to the parameter setting module are evaluated
The fuzzy membership relationship and its weight of index calculate the evaluation index of each optional route design scheme, generate each
The evaluation score of scheme, optimum scheme comparison；
The expert database is used for memory space environmental knowledge, design specification knowledge and route selection expertise.
2. system according to claim 1, which is characterized in that the parameter setting module is determined every using analytic hierarchy process (AHP)
The weight of a evaluation index, specifically includes: the judgment matrix two-by-two between evaluation index is established according to expert database；Calculate institute
The feature vector for stating judgment matrix, using the value of described eigenvector as the weight of corresponding evaluation index.
3. system according to claim 1, which is characterized in that the economic benefits indicator includes design and construction cost, fortune
Seek maintenance cost, labor cost, earning rate and interim one or more of investment repayment；The engineering index of difficulty includes not
Good landforms area, mileages of transport route, bridge tunnel quantity, complicated construction section and one of tear down and reconstruct project or a variety of；The environment is wanted
Plain index includes during eco-environmental impact, humanistic environment influence, cultural environment influence, living environment influence and policy environment influence
It is one or more；The social benefit index includes service group, approach county and town, road cooperation linking, transport need and can
One of sustainable development is a variety of.
4. system according to claim 1, which is characterized in that the three-dimensional modeling data includes digital terrain model, number
One of word elevation model, digital surface model and digital orthoimage are a variety of.
5. system according to claim 1, which is characterized in that the space environment knowledge include along landform, geology and
Space characteristics rule, Spatial Association Rule, the space sequence that hydrology space environment and highway geometry generate under different topology relationship
Column rule and space behavior mode；The design specification knowledge includes road plane standard, vertical section standard, cross section mark
Standard, bridges and culverts standard, level-crossing standard and subgrade and pavement standard；The route selection expertise is what long-term engineering practice was formed
Knowledge related with experience.
6. system according to claim 1, which is characterized in that further include:
As a result output module, the intermediate knot for being generated to the data acquisition module, characteristic extracting module, parameter setting module
The evaluation result for each optional route scheme that fruit and the fuzzy synthesis module generate is shown.
7. a kind of route selection evaluation method based on oblique photograph threedimensional model, which is characterized in that execute the method is
System is provided with expert database, and the expert database is used for memory space environmental knowledge, design specification knowledge and route selection expert
Knowledge；The described method includes:
Basic data needed for obtaining route selection；The basic data includes that oblique photograph device is original in planning region
It takes photo by plane surveying and mapping data, traffic demand data and a plurality of optional route design scheme；
Characteristic is extracted from the basic data；The characteristic includes the threedimensional model number extracted from surveying and mapping data
According to, the traffic vector data extracted from traffic demand data, and the road plane line ginseng extracted from design schemes of route
Number, road Cross Section design parameter and profile of road design parameter；
The fuzzy membership relationship of characteristic and default route selection evaluation index is determined according to expert database and is each commented
The weight of valence index；The default route selection evaluation index includes that economic benefits indicator, engineering index of difficulty, environmental element refer to
One of mark and social benefit index are a variety of；
According to the fuzzy membership relationship and each evaluation index of the characteristic and default route selection evaluation index
Weight calculates the evaluation score of each optional route design scheme, optimum scheme comparison.
8. the method according to the description of claim 7 is characterized in that the weight of each evaluation index is true using analytic hierarchy process (AHP)
It is fixed, it specifically includes:
The judgment matrix two-by-two between evaluation index is established according to expert database；
The feature vector for calculating the judgment matrix, using the value of described eigenvector as the weight of corresponding evaluation index.
9. the method according to the description of claim 7 is characterized in that the method also includes:
Show basic data in above-mentioned steps obtains result, characteristic extracts result, fuzzy membership relationship setting result,
The evaluation score calculated result of evaluation criterion weight definitive result and each optional route design scheme.
10. a kind of storage medium, which is characterized in that the storage medium is stored with any described for perform claim requirement 7 ~ 9
Method program.
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