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Method and system for road surveying and mapping

A road and road-level technology, applied in the field of data processing, can solve problems such as large proportion of labor, long production cycle, and difficulty

Active Publication Date: 2017-08-25
BEIJING TRANWISEWAY INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, traditional surveying and mapping generally has the following defects: 1) a large number of people and manpower are invested; 2) the production cycle is long; 3) the proportion of labor is large; 4) it is difficult to shorten the update cycle

Method used

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  • Method and system for road surveying and mapping
  • Method and system for road surveying and mapping
  • Method and system for road surveying and mapping

Examples

Experimental program
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Effect test

Embodiment 1

[0026] refer to figure 1 , gives the flow chart of the road surveying and mapping method provided by Embodiment 1 of the present invention.

[0027] Step 101, the raw data acquired by each vehicle through positioning constitutes a set of single vehicle trajectories within a preset time period.

[0028] At present, many vehicles are equipped with navigation and other devices with positioning functions. Through this device, the positioning information of vehicles can be obtained at various times. For example, the transportation department has a vehicle supervision / monitoring business system, which can receive real-time vehicle positioning information. Through long-term accumulation, massive data with historical vehicle trajectories have been formed, and these massive data can be mined for valuable information with the help of cloud computing and other technologies in a certain way.

[0029] The embodiments of the present invention can perform road network surveying and mapping ...

Embodiment 2

[0041] On the basis of the above embodiments, this embodiment further discusses the road surveying and mapping method.

[0042] refer to figure 2 , shows a flow chart of the road surveying and mapping method provided according to Embodiment 2 of the present invention.

[0043] Step 201, the raw data acquired by each vehicle through positioning constitutes a set of single vehicle trajectories within a preset time period.

[0044] Step 202, performing preprocessing on the set of single-vehicle trajectories, and eliminating special points in the set of single-vehicle trajectories.

[0045] Wherein, the special points include: at least one of the following: repeated points, drift points and illegal points. The special point refers to the point with inaccurate data in the bicycle trajectory. Using this point to process will lead to deviations in the results. Therefore, the special point in the bicycle trajectory collection can be eliminated through preprocessing. details as fol...

Embodiment 3

[0093] On the basis of the above embodiments, this embodiment also provides a road surveying and mapping system.

[0094] refer to Figure 5 , which shows the structure diagram of the road surveying and mapping system provided by the third embodiment of the present invention.

[0095] The road surveying and mapping system includes: a trajectory collection acquisition module 501 , a matching module 502 , a correlation analysis module 503 and a supplementary surveying and mapping module 504 .

[0096] Among them, the trajectory set acquisition module 501 is used to form the original data obtained by each vehicle through positioning into a single vehicle trajectory set within a preset time period; the matching and storage module 502 is used to use the single vehicle trajectory set and the basic road network The spatial index constructed from the road section data is used for road matching; the correlation analysis module 503 is used to perform correlation analysis on unmatched b...

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Abstract

The invention provides a road surveying and mapping method and a road surveying and mapping system. The method comprises the steps of enabling the original data of all vehicles acquired by location to form a single vehicle track set within a preset time period; carrying out road matching by the single vehicle track set and a spatial index established according to the road segment data of a base road network; carrying out correlation analysis on the single vehicle tracks which are not successfully matched according to the areas to confirm the relevant combinations as well as the fitted curves and the road grades of the relevant combinations; supplementing the road segment data of the base road network by the possibly missing roads confirmed according to the fitted curves and the road grades to form the road surveying and mapping result. The actual driving single vehicle tracks of the vehicles are matched with the existing base road network, the possibly missing rods can be obtained by the correlation analysis mass of single vehicle tracks, and the road segment data of the base road network is supplemented by the possibly missing rods; the method and the system are shorter in surveying and mapping period, controllable in surveying and mapping replacement cycle, high in accuracy of surveying and mapping result and timely in data updating.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a road surveying and mapping method and system. Background technique [0002] The surveying and mapping of basic road network data is mainly carried out by the government, commercial surveying and mapping companies authorized by the government, and the military. Among them, the military's surveying and mapping results are the most detailed, but they are exclusively used by the military and have not been commercialized; while the government's surveying and mapping is provided to the government in charge of land, geological surveys, cadastres, etc., and the other part will be paid for external development; Commercial surveying and mapping companies authorized by the government usually serve the market entirely. The above-mentioned surveying and mapping is usually divided into two processes: field work and internal work. The field work is the process in which surveyors and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
CPCG06F16/2228G06F16/29
Inventor 杜雄胡道生夏曙东
Owner BEIJING TRANWISEWAY INFORMATION TECH
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