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WorldView-2 three-dimensional double-medium water depth detection method

A technology of worldview-2 and detection method, applied in the field of surveying and mapping science

Inactive Publication Date: 2020-12-08
曹彬才
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Problems solved by technology

Most of the existing stereoscopic dual-media photogrammetry methods are carried out for close-range or aerial images[6-7], that is, the height of image acquisition is in the range of tens of meters to several kilometers, and it is relatively rare to use the stereoscopic images collected by satellites at an altitude of hundreds of kilometers. Related research

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  • WorldView-2 three-dimensional double-medium water depth detection method
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[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] The present invention provides a technical solution: a WorldView-2 three-dimensional dual-medium water depth detection method, the main steps are as follows figure 1 As shown, it mainly includes flare elimination, geometric model construction, image matching and refraction correction. And the specific steps are:

[0045] (1) Elimination of flare: For satellite images in ocean areas, affected by factors such as the surface state of the ocean waves, the ...

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Abstract

The invention discloses a WorldView-2 three-dimensional double-medium water depth detection method in the technical field of surveying and mapping science, which mainly comprises flare elimination, geometric model construction, image matching and refraction correction, and aims to introduce a double-medium photogrammetry technology into high-resolution remote sensing satellite image processing toconstruct a set of shallow sea water depth inversion algorithm framework. The technical problem of satellite double-medium photogrammetry is solved. Since image matching is a key step of photogrammetry and the premise of accurate image matching is rich texture, the application range needs to be noticed when the method is used for shallow sea sounding, that is, the water quality of a target area needs to be clear, underwater texture needs to be rich, meanwhile, stereo images need to be selected, and obvious stormy wave time is avoided.

Description

technical field [0001] The invention relates to the field of surveying and mapping science and technology, in particular to a WorldView-2 three-dimensional dual-media water depth detection method. Background technique [0002] Shallow sea refers to the shallow waters around the mainland or islands. Shallow sea depth data is an important basic geospatial information required for applications such as shallow sea environmental governance, shallow sea resource development and utilization, shallow sea navigation, and island landing operations. Accurate, efficient, and economical acquisition of shallow sea depth data is the goal pursued by marine surveying and mapping. The existing shallow sea bathymetric methods include: shipborne sonar, airborne lidar [1-2], optical remote sensing inversion [3-4] and dual-media photogrammetry [5]. The shipborne sonar method has many limitations in shallow sea areas. Ships in extremely shallow areas cannot reach it and are easy to run aground. A...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C13/00G01C11/00
CPCG01C11/00G01C13/008
Inventor 曹彬才方勇江振治高力胡海彦
Owner 曹彬才