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Road screening method, device, server and storage medium

A screening method and road technology, applied in the field of road identification, can solve the problems of manpower consumption, high cost, time delay or interference of regional conditions, and achieve the effect of improving efficiency, reducing cost, and improving accurate determination.

Active Publication Date: 2021-11-12
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used methods in road recognition and extraction are semi-automatic road extraction algorithms. This algorithm first selects certain road seed points manually, and then uses certain search strategies to detect road edges in combination with road influence feature information, and finally uses certain The road edge tracking algorithm connects the road segments and extracts the road. This algorithm needs to consume a certain amount of manpower and needs to obtain the characteristic information of the road, and the cost is relatively high.
In addition, after the new road is laid, the road information cannot be updated in time due to the delay in collecting road information by the surveyors or the interference of regional conditions
Another commonly used road extraction algorithm is automatic extraction based on machine learning, but because green belts, buildings, mountains and hills interfere with road extraction, rivers and other current conditions are not similar to road shapes in remote sensing satellite images, based on machine learning It is difficult for the automatic extraction algorithm to distinguish to eliminate interference, so the accuracy of road extraction is low

Method used

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  • Road screening method, device, server and storage medium
  • Road screening method, device, server and storage medium
  • Road screening method, device, server and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The road screening method provided in this embodiment is applicable to the situation of screening actual roads from various candidate roads, and the method can be performed by a road screening device, which can be implemented by software and / or hardware. Can be integrated in the server. see figure 1 , the method of this implementation specifically includes the following steps:

[0025] S110. Determine each candidate road included in the target satellite image.

[0026] Wherein, the target satellite image is the image data obtained by photographing or scanning the ground features through cameras, TV cameras, multi-spectral scanners and other equipment during the operation of the artificial earth satellite, including pictures or videos. Wherein, each candidate road may include road name, road length and width information, location information, satellite image, real-time road conditions and other information.

[0027] The candidate roads are extracted from the target sa...

Embodiment 2

[0039] This embodiment is optimized on the basis of the above embodiments, details not described in detail in this embodiment can be found in the above embodiments. see figure 2 , the road screening method provided in this embodiment includes:

[0040] S210. Using the target satellite image as an input of the road recognition model, extract each candidate road included in the target satellite image.

[0041]Wherein, the road recognition model is generated in the following manner: matching the basic road data with sample satellite images to determine the roads included in the sample satellite images; according to the roads included in the sample satellite images, the convolutional network model is trained to generate The road recognition model. Specifically, collect the determined existing road data as the basic road data, collect sample satellite images, and match the basic road data with the sample satellite images to construct training samples and test samples. Optionally...

Embodiment 3

[0050] This embodiment provides a road screening device, see image 3 , the device specifically includes:

[0051] A road determination module 310, configured to determine each candidate road included in the target satellite image;

[0052] Trajectory acquisition module 320, used to filter and obtain the driving trajectory from the trajectory data of each device;

[0053] The matching module 330 is configured to match each candidate road included in the target satellite image with the driving trajectory, and determine the road included in each candidate road according to the matching result.

[0054] Optionally, the road determination module 310 is specifically used for:

[0055] Using the target satellite image as the input of the road recognition model, extracting each candidate road included in the target satellite image;

[0056] Wherein, the road recognition model is generated as follows:

[0057] matching the underlying road data with the sample satellite imagery to ...

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Abstract

The embodiment of the invention discloses a road screening method, device, server and storage medium. The method includes: determining each candidate road included in the target satellite image; screening and obtaining the driving track from the track data of each device; matching each candidate road included in the target satellite image with the driving track, and according to the matching result Roads included in the candidate roads are determined. By combining satellite images and equipment trajectory data for road identification, the efficiency of road identification is improved, the actual road can be effectively screened, the accuracy of road screening and the timeliness of new road extraction are improved, and the cost of road identification is reduced.

Description

technical field [0001] The embodiments of the present invention relate to the field of road identification, and in particular to a road screening method, device, server and storage medium. Background technique [0002] At present, more and more functions are integrated in the terminal, and these functions can be realized through various application programs. Users can make life more convenient by applying various functions. Road recognition function and positioning function are widely used by users due to their real-time and convenience. In the road recognition service, the server stores a large amount of road information, including road name, road length and width information, location information, satellite images, real-time road conditions, etc., and can provide users with road information through the user terminal to facilitate users to travel. [0003] At present, the commonly used methods in road recognition and extraction are semi-automatic road extraction algorithm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/34
CPCG01C21/34
Inventor 彭继东万程刘鹏杨敬杨旭虹陈程
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD