Method and system for detecting changes in remote sensing images

Abstract

The present invention discloses a remote sensing image change detection method and system The method comprises the following steps of: taking a vector diagram spot corresponding to a remote sensing image of a preceding time phase as a reference to segment a remote sensing image of a latter time phase, and acquiring a segmentation diagram spot of the remote sensing image of the latter time phase; extracting all of or part of spectroscopic features and texture features of the remote sensing image region of the preceding time phase corresponding to the segmentation diagram spot to form a preceding space vector feature, and establishing a preceding space vector according to the preceding space vector feature; extracting features of the selected segmentation diagram spot corresponding to the preceding space vector feature to form a latter space vector feature, and establishing a latter space vector according to the latter space vector feature; and determining whether the selected segmentation diagram spot changes or not by comparison of the latter space vector and the preceding space vector. The detection method and system disclosed by the present invention are small in salt-and-pepper noise detection, and high in detection precision.

Description

technical field [0001] The invention relates to the technical field of remote sensing, in particular to a method and system for detecting changes in remote sensing images. Background technique [0002] Today, the movement of nature, human activities, and the continuous development of economic globalization have caused global problems such as frequent disasters, over-cultivation of land, and climate change, making people aware of the rapid and large-scale changes in land cover Detecting and analyzing the characteristics, causes and impact results of its changes are of great significance to the effective monitoring of ecological environment changes and geographical conditions in my country, and the realization of sustainable development. [0003] With the continuous development of remote sensing science, computer technology, and mathematical statistics, remote sensing change detection, as a new growth point after the intersection of these disciplines, is a representative of the...

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Problems solved by technology

[0005] Based on this, it is necessary to provide a new method and system for remote sensing image change detection in view of the problem of serious salt and pepper phenomenon and low change detection accuracy in the traditional multi-temporal remote sensing image change detection method

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