Vehicle trajectory data compression method, device and equipment and storage medium
A vehicle trajectory and data compression technology, applied in the field of intelligent transportation, can solve problems such as large amount of computation, low parallel compression efficiency, and complexity, and achieve the effects of reducing computational space complexity, high real-time processing efficiency, and simple method.
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Embodiment 1
[0055] An embodiment of the present disclosure provides a method for compressing vehicle trajectory data, figure 1 It is a schematic flowchart of a method for compressing vehicle track data according to an exemplary embodiment;
[0056] Such as figure 1 As shown, a method for vehicle trajectory data compression, including:
[0057] S101 acquires the first track point data in the vehicle track data and the previous track point data and the next track point data adjacent to the first track point;
[0058] Specifically, the original track data of the vehicle is obtained through the terminal positioning device installed on the vehicle, and the number of track points in the original track data of the vehicle is calculated; when the number of track points is less than the preset number of track points, the vehicle track data is added to the compressed database; when When the number of track points is greater than the preset number of track points, the first track point data and the ...
Embodiment 2
[0102] An embodiment of the present disclosure provides a method for compressing vehicle trajectory data, figure 2 It is a schematic flowchart of a method for compressing vehicle track data according to an exemplary embodiment.
[0103] Such as figure 2 As shown, a vehicle track data compression method, comprising:
[0104] Get the original vehicle trajectory data Trm, where Trm =[P 0 ,P 1 ,...,P i ,...,P m ], track point data Pi includes track point longitude information, latitude information, time information. Initialize the compressed database eTr, initialize the number r of continuous thinning track points to 0, initialize the angle value ∠An of the true north angle of the last track point to 0, and initialize the time t to 0.
[0105] Calculate the number of track points in the original vehicle track data Trm, when the number of track points is less than the number of preset track points, add the vehicle track data to the compressed database, and output the compre...
Embodiment 3
[0143] An embodiment of the present disclosure provides a device for compressing vehicle trajectory data, Figure 8 It is a structural schematic diagram of a vehicle trajectory data compression device according to an exemplary embodiment.
[0144] Such as Figure 8 As shown, a device for compressing vehicle trajectory data includes:
[0145] S801 The first acquisition module is used to acquire the first track point data in the vehicle track data and the previous track point data and the next track point data adjacent to the first track point;
[0146] S802 auxiliary point generation module, for generating auxiliary point data based on the first track point data and the next track point data;
[0147] S803 calculation module, used to calculate the angle value of the angle between the first track point, the next track point and the auxiliary point, and convert the angle value of the included angle into the angle value of the true north angle;
[0148] S804 judging module, use...
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