Traffic track data noise reduction method and system

A trajectory data and traffic technology, applied in the field of intelligent transportation, can solve the problems of complex noise reduction process and low execution efficiency of traffic trajectory data, and achieve the effect of high efficiency and simple noise reduction process.

Active Publication Date: 2014-06-11
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method for noise reduction of traffic trajectory data, which aims to solve the problem of complex noise reduction process and low execution efficiency of traffic trajectory data in the prior art

Method used

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  • Traffic track data noise reduction method and system
  • Traffic track data noise reduction method and system
  • Traffic track data noise reduction method and system

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Experimental program
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Embodiment 1

[0037] figure 1 It shows the flow chart of the implementation of the traffic trajectory data noise reduction method proposed in Embodiment 1 of the present invention, and is described in detail as follows:

[0038] In S101, the traffic track data is preprocessed to obtain a vector representation of the traffic track data;

[0039] In S102, cluster processing is performed on the traffic trajectory data represented by the vector, and a cluster processing result is obtained;

[0040] In this embodiment, in order to classify the traffic trajectory data, the traffic trajectory data represented by the vector is clustered, and the clustering processing results can divide the same or similar trajectory data in the traffic trajectory data into one category, so as to facilitate subsequent data processing.

[0041] In S103, according to the clustering processing result, search for abnormal trajectory data in the traffic trajectory data;

[0042] In this embodiment, S103 may specifical...

Embodiment 2

[0050] Figure 4 It shows the flow chart of the implementation of the traffic trajectory data preprocessing method provided by the second embodiment of the present invention, and is described in detail as follows:

[0051] In S401, traffic track data to be processed between any start point and end point is acquired, wherein the traffic track data is located in a first coordinate system, and the first coordinate system is a two-dimensional coordinate system.

[0052]In this embodiment, the traffic track data is defined in a two-dimensional coordinate system, assuming that the coordinate system is α, including the X axis and the Y axis, wherein, a traffic track data is a set of directed GPS coordinate points, so The X-axis can be defined as the longitude of the GPS coordinate point, and the Y-axis can be defined as the latitude of the GPS coordinate point. Of course, the above-mentioned corresponding method of the GPS coordinate point in the coordinate system is only an implemen...

Embodiment 3

[0070] Figure 5 It shows the structural diagram of the traffic track data noise reduction system provided by the third embodiment of the present invention. For the convenience of explanation, only the parts related to the embodiment of the present invention are shown. The device can be built in the traffic track data processing terminal A software unit, a hardware unit or a combination of software and hardware.

[0071] The system includes: a preprocessing unit 51 , a clustering unit 52 , a search unit 53 and a removal unit 54 .

[0072] A preprocessing unit 51, configured to preprocess the traffic track data, and obtain a vector representation of the traffic track data;

[0073] A clustering unit 52, configured to perform clustering processing on traffic track data represented by vectors, and obtain clustering processing results;

[0074] A search unit 53, configured to search for abnormal track data in the traffic track data according to the clustering processing result; ...

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Abstract

The invention is applicable to the technical field of intelligent traffic and provides a traffic track data noise reduction method and system. The method includes conducting preprocessing on traffic track data to obtain vector representation of the traffic track data; conducting clustering processing on the traffic track data of the vector representation to obtain a clustering processing result; searching for abnormal track data in the traffic track data according to the clustering processing result; removing the abnormal track data in the searched traffic track data. By means of the method and system, a noise reduction process of the traffic track data is simple and high in efficiency.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and in particular relates to a traffic trajectory data noise reduction method and system. Background technique [0002] In recent years, the number of urban motor vehicles has increased rapidly, which has caused many traffic problems, such as traffic jams, difficulty in parking, and difficulty in taking taxis. Therefore, in the blueprint for building a smart city in the future, smart transportation is the top priority. For the construction of intelligent transportation, it will inevitably involve the processing of large-scale traffic trajectory data. However, due to unpredictable reasons such as satellite navigation errors, network communication delays, and abnormal signal interference, there are a large number of abnormal trajectories in traffic trajectory data. These data seriously affect the objectivity of traffic trajectory analysis. Therefore, how to remove abnormal traff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG08G1/0125
Inventor 邹瑜斌张帆李晔白雪须成忠
Owner SHENZHEN INST OF ADVANCED TECH
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