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Path planning method based on terrain semantics

A path planning and semantic technology, applied in road network navigators, data processing applications, predictions, etc.

Inactive Publication Date: 2016-04-06
WUHAN UNIV
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Problems solved by technology

[0005] However, due to the fact that most of the current path analysis methods are limited to two-dimensional plane space, and there is a big difference between the abstract map road network and the real traffic environment, and the lack of quantitative description information for the terrain, it often neglects in path planning. The influence of terrain factors

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Embodiment Construction

[0039] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0040] Digital elevation model (DEM) is a solid ground model that expresses the ground elevation in the form of a set of ordered numerical arrays. It is a branch of digital terrain model, and various other terrain characteristic values ​​can be derived from it. It is an important terrain factor in digital terrain analysis, and it is widely used in geoscience analysis and engineering such as hydrological analysis, soil erosion simulation, and landform type division. It is generally believed that DTM is to describe the spatial distribution of various geomorphol...

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Abstract

The invention discloses a path planning method based on terrain semantics. According to the path planning method, data parts include the DEM data part and the road network data part in an analysis area, wherein the DEM data part is a carrier of terrain semantic information, and road network data are basic data for path planning; DEM data are subjected to first-order terrain semantics extraction to obtain gradient information and aspect information; next, second-order terrain semantic information continues to be deduced on the basis of first-order terrain semantics, wherein the second-order terrain semantic information contains fluctuation information and roughness information; lastly, the second-order terrain semantic information and a road network are superposed to calculate an equivalent energy consumption path distance. Through the path planning method, accuracy and economy of path planning are improved, and more convenience is brought to travel of a user; a weight calculation rule which can be changed is also formulated, so different optimal energy consumption path calculation modes can be customized according to different demands and different regional conditions to achieve automatic planning of paths.

Description

technical field [0001] The invention belongs to the technical field of geographic information systems and navigation, and in particular relates to a route planning optimization method based on terrain semantics. Background technique [0002] The development of geographic information system has continuously transformed from emphasizing "system and function" to "service and application", highlighting the purpose of people-oriented informatization and intelligent service (Li Deren & Li Qingquan, 2002). With the development of embedded technology and the popularity of smart mobile terminals, route planning and navigation, as one of the most commonly used services in geographic information systems, has been more and more widely used in transportation, tourism, logistics and other fields. It has become one of the hotspots of current application services to provide real-time and fast location services by integrating with mobile phones. [0003] With the gradual maturity of informa...

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Application Information

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IPC IPC(8): G01C21/34G06Q10/04
CPCG01C21/343G01C21/3446G06Q10/047
Inventor 李霖夏辉杨辉
Owner WUHAN UNIV
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