Refined intersection geometric topology construction method and system
A technology of geometric topology and construction method, applied in the field of traffic modeling, can solve problems such as inability to meet requirements, and achieve the effects of reducing data acquisition costs, improving work efficiency, and improving reuse.
Inactive Publication Date: 2020-02-14
SUN YAT SEN UNIV
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It cannot meet the demand of computable GIS-T for refined intersection data
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[0087] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0088] refer to Figure 4 , this embodiment discloses a method and system for constructing a refined intersection topology, the steps are as follows:
[0089] S1. Construct a reference frame of reference according to the topology of the physical foundation;
[0090] S2. Build a right-turn curved line;
[0091] S3. Construct the roadway boundary line of the right-turn channelization road;
[0092] S4. Build a crosswalk;
[0093] S5. Build a stop line;
[0094] S6. Construct the roadway dividing line of the widening section, the gradient section, and the ordinary road section;
[0095] S7. Construct a guiding arrow;
[0096] S8. Construct the boundary line of the roadway in the left-turn waiting area;
[0097] S9. Constructing guide lines.
[0098] The following introduces the physical basic topology, logical topology and geometric topolo...
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The invention discloses a refined intersection geometric topology construction method and a refined intersection geometric topology construction system. The method comprises the following steps of acquiring a physical basic topology and a logic topology of an intersection; obtaining external geometric parameters; constructing intersection geometric topology according to the physical basic topology, the logic topology and the external geometric parameters; wherein the intersection geometric topology is used for describing geometric expressions and position relations of sign lines bearing traffic rules; when the intersection geometric topology is constructed, specifically, the physical basic topology is used as a reference system, the logic topology is used as a basis, the set derivation sequence is followed, the external geometric parameters are imported in sequence, and the geometric topology elements of the intersection are constructed. According to the embodiment of the invention, the intersection geometric topology is constructed according to the physical basic topology, the logic topology and the external geometric parameters, so that the intersection geometric topology is finer. The method can be widely applied to the technical field of traffic modeling.
Description
technical field [0001] The invention relates to the technical field of traffic modeling, in particular to a method and system for constructing refined intersection geometric topology. Background technique [0002] Intelligent Transportation System (ITS) is an important change in the field of transportation since the 1990s. The traditional intelligent transportation system requires the support of many business systems due to many businesses, and the mode of building infrastructure for each business system separately has resulted in redundant construction of resources, islands of data, and barriers to technology. [0003] The birth of IDPS (that is, the abbreviation of Infrastructure, Data, Platform and System) intelligent transportation system can solve the above problems well. It collects complete data D through a sound infrastructure I, and then performs calculation and analysis on an intelligent platform P to provide system services S. Its core idea is "high data reuse",...
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Inventor 黄敏伍召举李烨焘张汉林
Owner SUN YAT SEN UNIV