Vector grid model-based remote sensing image information extraction method and system

Abstract

The invention discloses a vector grid model-based remote sensing image information extraction method and a vector grid model-based remote sensing image information extraction system. The method comprises the following steps of constructing a vector grid model; performing feature calculation on each object in the vector grid model; training samples are collected, and supervised classification is performed on the calculated feature dimensions; calculating the difference value of the segmented pattern spots of the front and rear images in the feature dimension, judging the pattern spot with the large difference value as a suspected change area, and extracting change discovery information through vector grid interactive editing. The method has the beneficial effects that vector grid model information is browsed and checked in real time; updating the neighborhood topology index file in real time to realize automatic construction of a topology relationship; the method is applied to high-spatial-resolution remote sensing image remote sensing information interpretation and remote sensing image change information extraction, and the application requirements of different high-resolution remote sensing data source information extraction are met.

Description

technical field [0001] The invention relates to the technical field of remote sensing, in particular to a method and system for extracting remote sensing image information based on a vector raster model. Background technique [0002] With the continuous launch of remote sensing satellites, remote sensing images and historical land cover data are increasing day by day. Interactive editing is inevitable in the post-processing of remote sensing image information. The traditional GIS platform cannot meet the strong interaction requirements of information extraction and post-processing, and it is difficult to support large volumes. The raster data volume of . [0003] Compared with traditional low-resolution remote sensing images, high-spatial-resolution remote sensing images have fewer spectral features and richer spatial texture and geometric information. However, the traditional method of extracting high-resolution remote sensing information using pixels as the analysis unit c...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned technical problems in the related art, the present invention proposes a method and system for extracting remote sensing image information based on a vector raster model, which can not only avoid the problem of weak interactive editing ability of raster and the topology that is easy to appear in the process of editing vector data by means of GIS problems, and conversion issues caused by different vector and raster data types

Images