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Method and system for acquiring abnormal data in traffic trajectory data

A technology of abnormal data and trajectory data, applied in the field of intelligent transportation, it can solve the problems of complex judgment process, and achieve the effect of reducing cost and simplifying the realization process.

Active Publication Date: 2016-01-20
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method for acquiring abnormal data in traffic track data, aiming at solving the problem that the method for eliminating abnormal elements in GPS data in the prior art needs to use information other than GPS data to analyze the abnormal elements of GPS data. Good or bad judgments, and the judgment process is complicated

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  • Method and system for acquiring abnormal data in traffic trajectory data
  • Method and system for acquiring abnormal data in traffic trajectory data
  • Method and system for acquiring abnormal data in traffic trajectory data

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Experimental program
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Embodiment 1

[0041] figure 1 It shows the flow chart of the realization of the abnormal data acquisition method in the traffic trajectory data provided by Embodiment 1 of the present invention, and the details are as follows:

[0042] In S101, the GPS data of the traffic trajectory to be analyzed is obtained;

[0043] In this embodiment, the GPS data is usually expressed in the form of (longitude, latitude), which can be used as points on a two-dimensional map drawn with latitude and longitude.

[0044] In S102, determine the minimum area of ​​the GPS data distribution, and divide the area into a plurality of sub-areas with equal areas;

[0045] In this embodiment, S102 may specifically be implemented in the following manner:

[0046] 1. Determine the minimum rectangular area where the GPS data is distributed, the vertical side of the rectangle is parallel to the longitude, and the horizontal side of the rectangle is parallel to the latitude;

[0047] 2. Divide the minimum rectangular a...

Embodiment 2

[0076] Figure 4 It shows the structural diagram of the abnormal data acquisition system in the traffic trajectory data provided by the second embodiment of the present invention. For the convenience of explanation, only the parts related to the embodiment of the present invention are shown. The system can be built in the traffic estimation processing device A software unit, a hardware unit or a combination of software and hardware.

[0077] The method includes: a GPS data acquisition unit 41 , a determination unit 42 , a statistics unit 43 , an analysis unit 44 and an abnormal data acquisition unit 45 .

[0078] GPS data acquiring unit 41, for acquiring the GPS data of the traffic trajectory to be analyzed;

[0079] A determination unit 42, configured to determine the minimum area of ​​the GPS data distribution, and divide the area into a plurality of sub-areas with equal areas;

[0080] Statistical unit 43, used to count the number of GPS data points contained in each sub-...

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Abstract

The invention is suitable for the field of intelligent traffic techniques and provides an abnormal data acquiring method and a system in traffic track data. The method comprises the steps of acquiring global position system (GPS) data of a traffic track to be analyzed, confirming a minimum region where the GPS data is distributed and dividing the region into a plurality of sub regions which are identical in area, counting the number of GPS data points contained in each sub region, analyzing virtual routes matched with the GPS data points in each sub region, and acquiring whether the GPS data in each sub region is abnormal data or not according to the number of the GPS data points contained in each sub region and the virtual routes. According to the abnormal data acquiring method and the system in the traffic track data, an extra data library is not needed to be relied on during the abnormal data judging process, and therefore using cost of the data library and consumption during the data analyzing process are reduced, and an achieving process is simple.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and in particular relates to a method and system for acquiring abnormal data in traffic trajectory data. Background technique [0002] In recent years, the number of urban motor vehicles has increased rapidly, which has caused many problems such as traffic jams, parking difficulties, and difficulty in taking taxis, which seriously affect the quality of ordinary people's travel. At the same time, the city's traffic network is becoming more and more complex, and the requirements for a perfect management system are getting higher and higher. In the blueprint of building a smart city in the future, smart transportation is the top priority. The core part of intelligent transportation is to understand the driving rules of motor vehicles, and use this to carry out road section planning and traffic management. The realization of intelligent transportation must be based on massive dat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/00
Inventor 须成忠万言易张帆李晔白雪
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI