A Processing Method of Space-Time Trajectory Data Compression

A data compression and processing method technology, which is applied in special data processing applications, database indexing, geographic information databases, etc., can solve the problems of low data compression efficiency, achieve the effects of improving data compression efficiency, improving extraction accuracy, and ensuring extraction accuracy

Active Publication Date: 2022-07-08
北京京安佳新技术有限公司
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  • Description
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Problems solved by technology

[0005] Therefore, the present invention provides a processing method for spatio-temporal trajectory data compression to overcome the problem of low data compression efficiency caused by inability to perform accurate feature extraction after compression in the prior art

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  • A Processing Method of Space-Time Trajectory Data Compression

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Embodiment Construction

[0061] In order to make the purpose and advantages of the present invention clearer, the present invention will be further described below with reference to the embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0062] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

[0063] It should be noted that, in the description of the present invention, the terms “upper”, “lower”, “left”, “right”, “inner”, “outer” and other terms indicated in the direction or the positional relationship are based on the drawings. The direction or positional relationship shown is only for the conve...

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Abstract

The invention relates to a processing method for compressing space-time trajectory data, comprising: splitting the accessed data to calculate a complete base station information table; grouping the data by device numbers and sorting multiple pieces of data in each group; generating a first One track compressed data block and establish parameter information; mark the latitude and longitude of the track compressed data block; sequentially perform iterative processing on each piece of data in each group; establish multiple track compressed data blocks and determine the type of each track compressed data block in turn; calculate The time difference between two adjacent static data blocks is assigned to it; the steps are repeated to complete the compression of each group of track compressed data blocks in sequence. The invention determines the type of each track compressed data block, and assigns value to each dynamic data block according to the speed of each dynamic data block after the determination, so that the data can be efficiently compressed while ensuring that the features of the compressed data are extracted. and the data compression efficiency of the method of the present invention is effectively improved.

Description

technical field [0001] The invention relates to the technical field of spatiotemporal trajectory data compression, in particular to a processing method for spatiotemporal trajectory data compression. Background technique [0002] There is a large amount of spatiotemporal trajectory data with timestamps, device numbers, base station numbers, event types (base station switching, location reporting, etc.) and other additional information. They increase by about 15 billion every day, occupying a lot of storage space. [0003] Currently, these trajectory data are stored as a sequence of location points with time information. This storage method wastes a lot of storage space. On the one hand, the trajectory data contains some important information. In the era of big data, the more data, the more interesting knowledge can be mined. Massive trajectory data is generated over time, which brings a huge test to storage conditions. Therefore, how to process the spatiotemporal movement...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/22G06F16/29
CPCG06F16/22G06F16/29Y02D30/70
Inventor 王霞王光勤安建勇
Owner 北京京安佳新技术有限公司
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