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Intelligent deformation area extraction method and system based on radar sequence image

A radar image and sequence image technology, applied in the field of radar survey, can solve problems such as large artificial influence, abnormal phase change error interference, and slope disaster trend influence.

Active Publication Date: 2021-10-22
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The difficulty in the radar deformation monitoring system lies in the selection of the monitoring area, which is too artificially affected, and there may be errors that cause abnormal phase changes. Interference will be considered as the deformation area, so manual selection of the monitoring area is not reliable
[0005] The existing radar deformation monitoring system mainly relies on experience to manually select areas for monitoring. It is easy to miss the alarm due to missing deformation areas, which has a serious impact on the subsequent prediction of slope disaster trends.

Method used

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  • Intelligent deformation area extraction method and system based on radar sequence image
  • Intelligent deformation area extraction method and system based on radar sequence image
  • Intelligent deformation area extraction method and system based on radar sequence image

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Embodiment 1

[0048] see figure 1 , this embodiment provides a method for intelligently extracting deformation regions based on radar sequence images, including:

[0049] Obtain multi-frame radar images for slope monitoring through synthetic aperture radar to calculate the slope data corresponding to each pixel in the radar image. The slope data includes deformation displacement, deformation rate, deformation dispersion and distribution density of permanent scatterers ;The slope data corresponding to each pixel in the multi-frame radar image is expressed in sequence feature vectorization, and then the position is encoded to form a data set; after linear transformation of each pixel in the data set, the query corresponding to each pixel is obtained Vector Q, key vector K, and value vector V; based on the slope data, the query vector Q, key vector K, and value vector V are divided into four equal parts, and the degree of correlation of each pixel in each frame of radar image is calculated thr...

Embodiment 2

[0081] This embodiment provides a system for intelligently extracting deformation regions based on radar sequence images, including:

[0082] The slope data acquisition unit is used to obtain multi-frame radar images for slope monitoring through synthetic aperture radar, so as to calculate the slope data corresponding to each pixel in the radar image, and the slope data includes deformation displacement and deformation rate , deformation dispersion and distribution density of permanent scatterers;

[0083] The feature vector quantization unit is used to perform sequence feature vector quantization representation of the slope data corresponding to each pixel point in the multi-frame radar image, and then perform position encoding to form a data set;

[0084] The linear transformation unit is used to linearly transform each pixel in the data set to obtain a query vector Q, a key vector K and a value vector V corresponding to each pixel;

[0085] The deformation identification u...

Embodiment 3

[0092] This embodiment provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is run by a processor, the steps of the above method for intelligently extracting deformation regions based on radar sequence images are executed.

[0093] Compared with the prior art, the beneficial effect of the computer-readable storage medium provided by this embodiment is the same as that of the method for intelligently extracting deformation regions based on radar sequence images provided by the above technical solution, and details are not repeated here.

[0094] Those of ordinary skill in the art can understand that all or part of the steps in the above-mentioned inventive method can be completed by instructing related hardware through a program. The above-mentioned program can be stored in a computer-readable storage medium. When the program is executed, it includes: For each step of the method in the above ...

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Abstract

The invention discloses an intelligent deformation area extraction method and system based on radar sequence images, relates to the technical field of radar survey, and can accurately and efficiently extract deformation distribution. The method comprises the following steps: acquiring multiple frames of radar images used for slope monitoring through a synthetic aperture radar to calculate slope data corresponding to each pixel point in the radar images, wherein the slope data comprises deformation displacement, deformation rate, deformation deviation and permanent scatterer distribution density; performing sequence feature vectorization representation on the slope data corresponding to each pixel point in the multi frames of the radar images to form a data set; performing linear transformation on each pixel point in the data set to obtain a query vector Q, a key vector K and a value vector V corresponding to each pixel point; and based on the slope data, carrying out quartering on the query vectors Q, the key vectors K and the value vectors V, calculating the correlation degree of each pixel point in each frame of the radar images through multi-head attention, and outputting a deformation identification result of each pixel point to realize the extraction of a deformation area.

Description

technical field [0001] The invention relates to the technical field of radar surveying, in particular to a method and system for intelligently extracting deformation regions based on radar sequence images. Background technique [0002] As a ground-based active microwave remote sensing technology, the radar imaging system has become one of the most widely used deformation monitoring methods in recent years due to its advantages such as not being easily affected by the environment and climate, flexible and portable equipment, and stable and accurate monitoring. [0003] The radar automatically acquires slope sequence data after setting the time interval for data collection, and delineates candidate deformation areas based on manual experience and scene characteristics. When the monitoring area reaches the deformation threshold, the system sends out an alarm. [0004] The difficulty in the radar deformation monitoring system lies in the selection of the monitoring area, which i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/46G06K9/62G06T7/11G06T7/187
CPCG06T7/187G06T7/11G06T2207/10044G06F18/24G06F18/214
Inventor 李洋王彦平崔紫维
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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