Trajectory data processing method and device

Abstract

The invention provides a trajectory data processing method and device. The trajectory data processing method comprises the following steps: acquiring to-be-processed trajectory data; based on a Douglas-Peucker algorithm, performing thinning processing on the to-be-processed trajectory data, and determining a first trajectory point; based on target attribute features, screening the to-be-processed trajectory data, and determining second trajectory points, wherein the target attribute features are used for representing specific service attributes corresponding to the trajectory points in the to-be-processed trajectory data; and determining target trajectory data based on the first trajectory point and the second trajectory point. According to the trajectory data processing method and device provided by the invention, the first trajectory point is obtained through thinning processing according to the Douglas-Peucker algorithm, the second trajectory point is obtained through screening processing according to the target attribute features, and the target trajectory data is obtained according to the first trajectory point and the second trajectory point, so that the data volume can be reduced, the space occupied by the trajectory data is reduced, the accuracy of information reflected by the trajectory data is ensured, and the utilization efficiency of the trajectory data is improved.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a trajectory data processing method and device. Background technique [0002] In the field of intelligent transportation, moving objects such as vehicles, ships and pedestrians will generate trajectory data. When using trajectory data, there are processes of storage, analysis, transmission and display. If the trajectory data is dense, it will make the trajectory The storage space occupied by the data is too large, so the trajectory data needs to be thinned out. [0003] Thinning refers to minimizing the number of points on the curve while keeping the shape of the vectorized curve unchanged. However, the current method of thinning the trajectory data is relatively simple, which makes the processed trajectory data easy to be distorted, and the accuracy rate is not enough, which makes the utilization efficiency of the trajectory data low. Contents of the invention [000...

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Problems solved by technology

[0004] The present invention provides a trajectory data processing method and device, which are used to solve the defects in the prior art that the processed trajectory data is easy to be distorted, the accuracy rate is not enough, and the utilization efficiency of the trajectory data is low, so as to realize the reduction of the amount of data and the reduction of the trajectory data The occupied space ensures the accuracy of the information reflected by the trajectory data and improves the utilization efficiency of the trajectory data

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