Urban vector road network registration method based on local control in GIS-T
A local control and urban technology, applied in educational appliances, instruments, maps/plans/charts, etc., can solve problems such as unresearched results and practical application systems, and achieve the effects of reduced complexity, strong implementability, and high precision
Inactive Publication Date: 2012-01-18
JILIN UNIV
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The method of local registration has application precedents at home and abroad, but the method of local registration through the establishment of Delaunay triangulation has not yet had specific research results and practical application systems in China.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0036] Embodiment is with the administrative division map of Changyi District, Jilin City (see figure 2 ) and CAD road network map to be registered on Jiefang North Road, Changyi District (see image 3 ) registration as an example, first add the same coordinate system to the two vector graphics, so that the two graphics can be displayed on the same interface. The present invention adopts such as figure 1 In the shown processing flow, the center line of the road and the center of gravity of the roadside residential areas are extracted first, and then the Delaunay triangle is established according to these discrete points to form a Delaunay triangulation network to realize the plane subdivision.
[0037] The specific implementation steps of the present invention are as follows:
[0038] 1. Extract the road centerlin...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an urban vector road network registration method based on local control in a GIS-T, which belongs to the technical field of intelligent traffic data acquisition, and the method comprises the following steps: 1) extracting a center line of a road and gravity center points of settlement places on the sides of the road as control points; 2) establishing a Delaunay triangularmesh; and 3) carrying out affine transformation which corresponds to a triangle. The method obtains discrete points on the center line of the road and the gravity center points of the settlement places on the two sides by adopting the programming method on the basis of comprehensive consideration of advantages and disadvantages of various vector road network registration methods, and can realize planar subdivision by establishing the Delaunay triangular mesh, and reduce the registration error by limiting the registration of a road network diagram in a single triangle of the triangular mesh for carrying out; and the method has strong implementation and high precision, does not need to carry out a large amount of pretreatment on the diagram, and can reduce the cost of a system and the complexity degree of the design of the system and improve the performances of the system.
Description
technical field [0001] The invention belongs to the technical field of intelligent traffic data acquisition. Background technique [0002] Transportation GIS (GIS-T, Geography Information System-Transportation) is an information system that collects, stores, manages, comprehensively analyzes and processes spatial information and traffic information of transportation geography. In traffic GIS, based on all kinds of spatial data and attribute data associated with road traffic, with the support of computer software and hardware technology, the collection, storage, retrieval, processing and comprehensive analysis of road information and traffic information are realized, so that Meet user needs. Therefore, the consistency of the geometric position of traffic element data such as road network is very necessary, which is the basis for ensuring the authenticity and accuracy of information processing and analysis. However, due to different sources of images, different acquisition d...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G09B29/00
Inventor 王云鹏于海洋李世武杨志发孙文财乔飞艳田晶晶孙维圆
Owner JILIN UNIV