Trajectory data cleaning method and device

A trajectory data and trajectory technology, applied in the information field, can solve problems such as poor trajectory data cleaning effect, and achieve good and accurate data cleaning effect

Active Publication Date: 2014-04-23
SHENZHEN INST OF ADVANCED TECH
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the above disadvantages, provide a cleaning method and device for trajectory data, and solve the technical problem of poor cleaning effect of trajectory data in the prior art

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  • Trajectory data cleaning method and device
  • Trajectory data cleaning method and device

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] In order to improve the effect of trajectory data cleaning and increase the accuracy of trajectory data cleaning, an embodiment of the present invention provides a trajectory data cleaning method, such as figure 1 shown, including:

[0035] Step S101: Obtain trajectory data, and process the trajectory data to obtain the two-dimensional plane coordinates x and y of each object at time t to form a trajectory point (t, x, y);

[0036] Wherein, the two-dimensional plane is: (1) a two-dimensional plane with the longitude and latitude of the earth as coordinate axes; or (2) a two-dimensi...

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Abstract

The invention relates to the technical field of information, in particular to a trajectory data cleaning method and device. According to the trajectory data cleaning method and device, time and areas are considered at the same time, space-time area division is carried out, a trajectory line segment formed by every two adjacent track points on each object trajectory line and the speed of the corresponding space-time area are considered comprehensively, the data cleaning effect is good, and abnormal data can be accurately cleaned.

Description

【Technical field】 [0001] The invention relates to the field of information technology, in particular to a trajectory data cleaning method and device. 【Background technique】 [0002] With the emergence of portable high-precision position positioning instruments and cheap and reliable large-capacity storage devices, it has become possible to locate and record and analyze various moving objects. However, due to the limitations of various positioning methods, the trajectory data obtained by people may be A lot of abnormal data appeared. Low-quality positioning trajectory data may cause people to obtain low-quality or even misleading results in data analysis. Therefore, how to clean the original data has become an urgent problem to be solved. [0003] There are many existing data cleaning methods. Among them, the preliminary cleaning scheme is to impose some "non-empty" or numerical range constraints on the original data; the further method is to remove the part of the trajecto...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 黄俊张帆王丽须成忠
Owner SHENZHEN INST OF ADVANCED TECH
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