Method for extracting shallow sea terrain by single-shot high-resolution optical remote sensing image

Abstract

The invention provides a method for extracting a shallow sea terrain by a single-shot high-resolution optical remote sensing image. The method comprises the following steps: performing information extraction and conversion treatment according to related theories by sea wave characteristic information (waves and change information thereof) presented in the optical remote sensing image to obtain near-shore shallow sea terrain information. Aiming at the terrain mapping requirements of a shallow sea region, the method for extracting the shallow sea terrain based on the single-shot high-resolution optical remote sensing image is built by the wave characteristic information on the high-resolution optical remote sensing image according to the shallow-water wave theory and the linear wave theory; the terrain information of the shallow sea region can be extracted by the single-shot high-resolution optical remote sensing image under the circumstance that any external initial parameter and control parameter are not input; the method is an innovation on the aspect of remote sensing information technology application, is a beneficial complement of near-shore shallow sea terrain measurement, and has a very high practical value.

Description

technical field [0001] The invention belongs to the field of remote sensing technology application and seabed terrain surveying and mapping, in particular to a method capable of extracting shallow sea terrain information as desired by using wave feature information in single-scene high-resolution optical remote sensing images. Background technique [0002] Seabed topographic mapping is the first step in exploring and studying the ocean, the first condition for developing and protecting the ocean, and an urgent need for oceanographic research today. Before the invention of the echo sounder, the water depth was mainly measured by the sounding rod and the sounding hammer, and the measurement accuracy was poor. After the echo sounder appeared in the 1920s, the drawing of sea charts in the modern sense was realized. However, the early echo sounders were launched with a single beam, and one launch could only obtain the water depth directly below the survey ship, so it could only ...

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