Data processing method, device and storage medium based on GPS trajectory
A data processing device and trajectory data technology, applied in the device and storage medium, and in the field of data processing methods based on GPS trajectory, can solve the problems of low update efficiency and accuracy of electronic map data, and achieve low update efficiency and accurate classification results , Solve the effect of low update accuracy
Active Publication Date: 2021-07-20
NAVINFO
View PDF10 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Solved the problem of low update efficiency and accuracy of electronic map data
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0025] Before implementing the present invention, it is necessary to train the KNN (k-Nearest Neighbor) classification algorithm. Extract the features of the successfully matched trajectory data after denoising to generate sample data. Use the automatic extraction training sample tool to extract the previously manually collected signage speed limit d...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present application discloses a data processing method, device and storage medium based on GPS trajectory. The method includes: using an electronic map to perform road matching on the floating car trajectory data, and obtaining trajectory data matching with the road in the electronic map and unmatched trajectory data; Denoise the matched trajectory data and the unmatched trajectory data according to the preset denoising optimization parameters; determine the speed limit information on the road according to the denoised matched trajectory data, and The unmatched trajectory data of the new road information identified on the road. The beneficial effect that this application can obtain is that the trajectory data of the floating car can be obtained without manual intervention, which solves the problem of low update efficiency of electronic map data; denoising the trajectory data according to the preset denoising optimization parameters improves the quality of mined data , to solve the problem of low update accuracy of electronic map data.
Description
technical field [0001] The present application relates to the technical field of data mining, in particular to a GPS track-based data processing method, device and storage medium. Background technique [0002] In China, which is developing rapidly, the road dynamics change too fast, while the electronic map data is updated slowly. In recent years, the methods for identifying road speed limits mainly include: field collectors find speed limit signs, collect speed limit data through the vehicle collection platform, and manually create them into electronic map data. This method is very inefficient and cannot cover all Road: through image recognition technology, the image of the speed limit sign taken by the camera is automatically recognized. It needs to be equipped with a better quality camera, which increases the acquisition cost, and encounters complex environments such as light and bad weather, and the recognition accuracy is low. And these two methods require more manual ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/029H04W4/40G08G1/01G08G1/052
CPCG06F2216/03G08G1/0112G08G1/0125G08G1/052H04W4/029H04W4/40
Inventor 夏华林李文聪
Owner NAVINFO