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Map matching method and apparatus, server, and storage medium

A map matching and path matching technology, applied in the computer field, can solve problems such as matching path distortion, achieve the effect of reducing matching errors and improving accuracy

Active Publication Date: 2019-10-25
丰图科技(深圳)有限公司
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  • Application Information

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Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides a map matching method, device, server and storage medium to solve the phenomenon of distortion of the matching path in the prior art due to a certain deviation between the vehicle trajectory and the actual position, and improve the accuracy of map matching. Rate

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  • Map matching method and apparatus, server, and storage medium
  • Map matching method and apparatus, server, and storage medium
  • Map matching method and apparatus, server, and storage medium

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Embodiment Construction

[0061] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0062] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate. Such as figure 1 As shown, it is the implementation process of the map matching method provided by the embodiment of the present invention, and the execution subject of this embodiment is the server. The details are as follows:

[0063] S101. Acquire effective track po...

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Abstract

The invention, which is applicable to the technical field of computers, provides a map matching method. The method comprises: acquiring an effective trajectory point of a vehicle based on trajectory data of the vehicle; determining a candidate state of each effective trajectory point; calculating a matching distance between each effective trajectory point and the corresponding candidate state as well as a target transfer cost between any two adjacent effective trajectory points; constructing a linear path matching function based on the matching distance and the target transfer cost; and calculating a linear path matching function to obtain a matching path of the effective trajectory point of the vehicle in the electronic map. According to the invention, the matching distance between each effective trajectory point and the corresponding candidate state as well as the a linear path matching function of the transfer cost between any two adjacent effective trajectory points is constructed;and the accuracy of the map matching is improved by solving the linear path matching function.

Description

technical field [0001] The invention belongs to the technical field of computers, and in particular relates to a map matching method, device, server and storage medium. Background technique [0002] Map matching is a positioning correction method based on software technology. Its basic idea is to link the vehicle positioning track with the electronic map information in the digital map, and thus determine the position of the vehicle relative to the map. In practical applications, the accuracy of map matching is closely related to the quality of sampling signals of positioning equipment. For example, the reduction of sampling frequency, the increase of positioning error, and the loss of signals will increase the inaccuracy of map matching. However, due to the influence of the quality of the positioning equipment itself and the noise of urban buildings, the above situation often occurs in practical applications, causing a certain deviation between the vehicle trajectory and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/30G01C21/34
CPCG01C21/30G01C21/3446G01C21/343
Inventor 段倩孔令其孟俊廖杰章文涛
Owner 丰图科技(深圳)有限公司
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