Method for extracting fracture structure information by means of image processing and priori knowledge

Abstract

The invention provides a method for extracting fracture structure information by means of image processing and priori knowledge. The method comprises the steps of (S1) obtaining a high-resolution remote-sensing image and basic geological data of an engineering area, (S2) carrying out edge enhancement on the image, (S3) extracting surface feature edge information by means of the edge detection algorithm, (S4) extracting linear information by means of the form matching algorithm, (S5) carrying out connection and removing on the linear information by means of the priori knowledge, and (S6) obtaining the fracture structure information through comprehensive analysis by means of a geographic information system. According to the method for extracting the fracture structure information by means of the image processing and the priori knowledge, the fracture structure information is extracted by means of the remote-sensing image processing technique; compared with a manual interpretation method, the method has the advantages that influence of experience and subjective factors of interpretation operators is greatly reduced, the accuracy of the extraction of the fracture structure information is improved by over 80%, and a novel technology is provided for better and faster extraction of the fracture structure information.

Description

technical field [0001] The invention relates to geological remote sensing interpretation technology, in particular to a method for extracting fault structure information by using image processing and prior knowledge. Background technique [0002] The line positions of long lines such as railways, highways, and water conservancy, large-scale station buildings, and auxiliary facilities should avoid or pass through fault structures at a large angle, especially regional active fault structures, so as to improve the safety of the project. Fault structure has become the key content of engineering geological survey of Changchang Railway. [0003] In recent years, artificial interpretation methods based on remote sensing information have emerged to extract fault structure information. However, this method mainly relies on manual visual interpretation, and there are still some problems: on the one hand, it is greatly affected by the experience and subjective factors of the judges; o...

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Problems solved by technology

[0004] Aiming at the problems existing in the extraction of fault structure information in the existing geological remote sensing interpretation technology, the purpose of the present invention is to provide a method for extracting fault structure information using image processing and prior knowledge, so as to realize the rapid and accurate extraction of fault structure information and innovate the traditional artificial interpretation method greatly affected by subjective factors

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