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A vector information-assisted automatic extraction method of remote sensing image road information

A remote sensing image and road information technology, applied in image analysis, image enhancement, image data processing, etc., can solve the problems of low degree of automation and high degree of manual intervention, and achieve the effect of long solution period

Active Publication Date: 2021-05-28
自然资源部国土卫星遥感应用中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the degree of automation in this way is still very low and the degree of human intervention is high

Method used

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  • A vector information-assisted automatic extraction method of remote sensing image road information
  • A vector information-assisted automatic extraction method of remote sensing image road information
  • A vector information-assisted automatic extraction method of remote sensing image road information

Examples

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Embodiment 1

[0071]Embodiment 1, a vector information assisted remote sensing image road information automatic extraction method, such asfigure 1 As shown, including the following steps:

[0072]S1) Get the satellite remote sensing image data and the old navigation road vector data, superimpose the old navigation road vector data with satellite remote sensing image data, and the vector superimposed image, the vector superimposed image includes the old navigation road vector and the navigation road node;

[0073]S3) The navigation road buffer within the preset range is generated in both sides of the old navigation road vector, and search for image road matching points in the navigation road buffer, including the following steps:

[0074]S31) Using the anti-parallel midline extraction algorithm to obtain the width, road edge points, and the center point position of the road point of the road in the vector superimposed image, including the following steps:

[0075]S311) The grayscale image obtained from the tw...

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Abstract

The invention relates to the field of road extraction from remote sensing images, and discloses a method for automatically extracting road information from remote sensing images assisted by vector information, including acquiring satellite remote sensing image data and old navigation road vector data, and superimposing the old navigation road vector data and satellite remote sensing image data ; Take the old navigation road vector as the center line, generate a navigation road buffer within the preset range to both sides of the center line, and search for image road matching points in the navigation road buffer; use the evaluation factor to evaluate the image road matching points; use The region growing method based on LUV color space is used for pixel-based road object segmentation; the Mean Shift image segmentation algorithm is used for road object optimization processing, and the road object optimization result is obtained. The present invention not only realizes road status detection, but also realizes automatic extraction of changed roads or newly added roads with less manual intervention, and solves bottleneck problems such as long cycle, slow speed and poor current status in the road updating process.

Description

Technical field[0001]The present invention relates to the field of remote sensing image road extraction, and in particular, to a vector information assisted remote sensing image path information automatic extraction method.Background technique[0002]Road data is an important part of the basic geographic data. Navigation electronic maps supported by road data have been more and more widely used in car mobile target monitoring, management and service systems, and deep into the daily life of the people. At present, the road data update method belongs to the version update production, which is based on the full-element data production. Regardless of whether road changes are involved in collecting editing, the final data is also submitted by one-time, which is easy to cause duplicate work, making data production tasks Heavy and updated cycles are also longer. Today, although the navigation electronic map manufacturers generally use incremental updates to navigate the path update, it still...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/11G06T7/13G06T7/136G06T7/187G06T5/00
CPCG06T5/002G06T2207/10032G06T7/11G06T7/13G06T7/136G06T7/187
Inventor 王光辉刘慧杰刘宇张涛王更张伟郑利娟魏海
Owner 自然资源部国土卫星遥感应用中心
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