A method for extracting building wall and window information from SAR images

Abstract

The invention discloses a method for extracting building wall and window information in a SAR image. The specific steps are: 1) using a point feature extraction method to obtain building bright spots in the SAR image; 2) using Radon transform to obtain the corresponding building bright spots in the SAR image Azimuth spacing; 3) Use the maximum texture correlation method to obtain the distance spacing corresponding to the bright spots of the building in the SAR image; 4) Use the Radon transform projection variance method to obtain the azimuth angle of the building wall in the SAR image; 5) Based on the SAR image building The Delaunay triangulation network of the highlight uses the triangular surface element matching method to extract the exact number and spatial distribution of windows on the building wall. The invention performs a series of image processing processes on the SAR image, extracts the number of windows on the wall of the building and their distribution, and realizes the extraction of the fine structure of the target wall of the building, which can satisfy the fine recognition and interpretation of the artificial target in the SAR image. It has great application prospects in areas such as city rules and land monitoring.

Description

technical field [0001] The invention relates to the field of satellite remote sensing applications, in particular to a method for extracting building wall window information from SAR images, which can extract the distribution of building wall windows from the SAR image. Background technique [0002] Synthetic Aperture Radar (SAR) has all-weather, all-weather, rapid imaging capabilities that can penetrate clouds and fog, and plays an irreplaceable role in disaster emergency response and monitoring in cloudy and rainy areas, and has gradually become one of the important means of earth observation. one. Since 2007, Italy's COSMO-SkyMed, Canada's RADARSAT-2, Germany's TerraSAR-X and TanDEM-X, and China's GF-3 satellite system have been launched successively, opening the era of high-resolution spaceborne SAR. Building target recognition and information extraction provide a large amount of SAR data. [0003] The high-resolution SAR image presents richer target information, and t...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of extracting the fine structure of the target wall of a building, the present invention provides a method for extracting information of windows on a building wall from a SAR image. Distribution

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