A method and device for space-time trajectory compression and segmented state expression

A space-time trajectory and time trajectory technology, applied in the field of trajectory of moving objects, can solve the problem of losing a large number of trajectory motion characteristics

Active Publication Date: 2022-06-17
中睿信数字技术有限公司
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Problems solved by technology

[0004] The present invention provides a method and device for space-time trajectory compression and segmented state expression, which are used to solve the problem of losing a large number of trajectory motion features in the prior art solutions

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  • A method and device for space-time trajectory compression and segmented state expression
  • A method and device for space-time trajectory compression and segmented state expression
  • A method and device for space-time trajectory compression and segmented state expression

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[0061] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

[0062] like figure 1 As shown, an embodiment of the present invention provides a method for space-time trajectory compression and segmented state expression, the method comprising:

[0063] Step 1: Batch extraction of offline trajectories to obtain time trajectory points; in the complete trajectory database, the temporal trajectory points are extracted in the order of trajectory timestamps from early to late;

[0064] Step 2: Perform initial filtering processing on the time trajectory point; use a filtering algorithm to filter out noise and discrete values ​​of the time trajectory point;

[0065] Step 3: Construct the trajectory point representation;

[0066] Step 4: Perform s...

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Abstract

The present invention provides a method and device for spatio-temporal trajectory compression and segmented state expression. The method includes: batch extraction of offline trajectories; performing primary filtering processing; constructing trajectory point representation; performing secondary filtering and compression; performing trajectory state expression based on speed . The present invention provides a method and device for spatio-temporal trajectory compression and segmented state expression, which can not only fully retain the motion characteristics of the trajectory, but also compress the redundant part of the trajectory, reduce the storage capacity, improve the efficiency of display expression, and solve the problem of The problem of missing some trajectory features in the existing technical solutions.

Description

technical field [0001] The present invention relates to the technical field of trajectories of moving objects, in particular to a method and device for compressing spatiotemporal trajectories and expressing segmented states. Background technique [0002] The trajectory of a moving object is a kind of data with a wide range of applications. In principle, the more trajectory points, the better the fit of the actual motion of the object. However, massive data will cause huge storage costs, and will also be used in practical applications. It consumes a lot of computational cost, so it is necessary to eliminate redundant trajectory points while retaining the motion features as much as possible. The proposal of the present invention is mainly applied to the sparse compression of massive space-time trajectory points. At the same time, it also explores to express the trajectory in segments, segment the entire trajectory according to certain rules, and express the motion state of the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M7/30G06F16/215G06F16/2457
CPCH03M7/30G06F16/215G06F16/24575
Inventor 张亦萍陈成斌叶智慧苏胜林马军亮
Owner 中睿信数字技术有限公司
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