Mesoscale vortex visualization algorithm based on Morphing technique

Abstract

The invention belongs to the crossing field of physical oceanography, computer graph and image processing and oceanography visualization, and specifically relates to a mesoscale vortex visualization algorithm based on a Morphing technique. According to the method, on the basis of track data obtained by tracking mesoscale vortexes, specific to each track, at the adjacent vortex positions, firstly, the original boundaries and target boundaries of the vortexes are resampled by using the Morphing technique, thus obtaining feature points; then corresponding positions among the feature points are determined by using Hausdorff distance matching; transform relationship among the feature points of the vortex boundaries is established by using a least square method; the feature points of the vortexes at middle moments are obtained according to the transform relationship; the line segments among the feature points at the middle moments are obtained through linear interpolation; finally the original information of the vortex boundaries and the middle information of the vortexes obtained through Morphing are organized and stored; and further visualization expression is carried out on the shape evolution in the vortex moving process. The technical support is provided to track the vortexes and know the growth, decline and fall shape evolution of the vortexes well.

Description

technical field [0001] The invention relates to the fields of physical ocean, computer graphic image processing and ocean visualization, more specifically, it is a visualization algorithm for establishing the evolution process of mesoscale vortex shape based on Morphing technology. Background technique [0002] As an important phenomenon in the ocean, the mesoscale vortex is known as the "climate in the ocean". and energy transport play an important role. Not only that, the vortex also affects the air-sea interaction and plays an important role in the biogeochemical process of the material in the ocean. With the development of remote sensing technology, it is possible to observe ocean phenomena on a large scale, and the spatial accuracy and time accuracy have been greatly improved. However, for the ever-changing ocean, there is still the problem of missing information due to insufficient data accuracy. How to better analyze the vortex with higher time resolution based on t...

AI Technical Summary

Problems solved by technology

[0005] At present, the application of Morphing technology in geoscience mainly includes 3D modeling, 2D river network, roads, etc. Morphing technology has not been applied to the study of mesoscale eddies.

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