Multi-temporal satellite remote sensing island bank line and development and utilization information extraction method

Abstract

The invention discloses a multi-temporal satellite remote sensing island bank line and development and utilization information extraction method, and belongs to the crossing field of ocean island satellite remote sensing and computer graphic processing. The method comprises the following steps: firstly, analyzing imaging characteristics of different types of island bank lines and development and utilization conditions; secondly, adopting an image downsampling and upsampling processing technology to realize rapid extraction of a large-breadth satellite remote sensing image, and combining with adistance regularization geometric active contour model to carry out accurate step-by-step approximation to obtain an island bank line; then, a adopting a Grabcut algorithm to segment the ocean background and the island reef foreground, and utilizing color information and boundary information in the image to obtain a good segmentation result; and finally, orthogonally projecting the data to a linear subspace formed by principal components by adopting a principal component analysis method, performing feature extraction and data compression through linear transformation, and performing clustering according to the extracted features to obtain a final change detection result. The method can achieve quick and effective extraction of the island bank line and development and utilization of the high-resolution satellite remote sensing image.

Description

technical field [0001] The invention belongs to the intersection field of satellite remote sensing of marine islands and reefs and computer image processing, and relates to a multi-temporal satellite remote sensing of islands and reefs coastlines and a method for extracting development and utilization information. Background technique [0002] In the field of remote sensing, change detection is defined as the process of identifying changes in the same area in different periods. Land use and land cover change information is widely used in urban change, forest cover, sea area use change detection, disaster monitoring, vegetation detection and so on. Change detection technology has been widely used to extract land surface change information from remote sensing images covering the same area. With the launch of the high-resolution visible light satellite GF1 / 2 and the first civilian SAR satellite GF-3, multi-type satellite data has been greatly developed, and the spatial resolut...

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Problems solved by technology

[0006] Although high-resolution remote sensing images have high resolution and good imaging quality, due to the limitations of remote sensing imaging technology and the influence of noise interference, and the remote sensing images of high-resolution islands and reefs are greatly affected by the external environment, satellite imaging images will Affected by different atmospheric conditions, it is difficult to accurately extract the changing areas of islands and reefs, which still needs further exploration and research

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