An automatic identification method for scale vortexes in an SST image based on an active contour model

An active contour model and automatic recognition technology, applied in character and pattern recognition, image enhancement, image analysis, etc., can solve problems such as unfixed, large and difficult automatic recognition of mesoscale eddies

Inactive Publication Date: 2019-05-17
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0002] At present, the identification of oceanic mesoscale eddies in existing remote sensing images mainly relies on "expert visual interpretation". In addition, since the shape of mesoscale eddies in SST (sea surface temperature) images is not fixed, it is difficult to automatically identify mesoscale eddies. Therefore, it is necessary to design an active contour model-based The automatic identification method of mesoscale eddies in SST images can realize the automatic identification of ocean mesoscale eddies through intelligent methods

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  • An automatic identification method for scale vortexes in an SST image based on an active contour model
  • An automatic identification method for scale vortexes in an SST image based on an active contour model
  • An automatic identification method for scale vortexes in an SST image based on an active contour model

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Embodiment Construction

[0061] Such as figure 1 As shown, the method for automatic identification of mesoscale eddies in SST images based on the active contour model is characterized in that it includes the following steps:

[0062] Step 1, preprocessing the SST satellite image, extracting the sea surface area image from the SST satellite image;

[0063] Step 2, performing mean value iterative threshold selection algorithm processing on the extracted sea surface area image to obtain the initial contour of the active contour model;

[0064] Step 3. Construct an active contour model for automatic identification of mesoscale eddies according to the initial contour, and calculate the internal energy and external energy of the active model;

[0065] In step 4, the active contour model for automatic identification of mesoscale eddies is solved to obtain the position of mesoscale eddies, thereby identifying mesoscale eddies.

[0066] Further, in step 1, the specific steps for preprocessing the SST satelli...

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Abstract

The invention provides an automatic identification method for scale vortexes in an SST image based on an active contour model, and the method comprises the steps of preprocessing the SST satellite image, and extracting a sea surface region image from the SST satellite image; carrying out mean iteration threshold selection algorithm processing on the extracted sea surface area image to obtain an initial contour of the active contour model; constructing a mesoscale vortex automatic identification activity contour model according to the initial contour, and calculating internal energy and external energy of the activity model; and solving the active contour model for automatically identifying the mesoscale vortexes to obtain the positions of the mesoscale vortexes, thereby identifying the mesoscale vortexes. The method for automatically identifying the mesoscale vortexes can effectively and automatically identify the mesoscale vortexes in the SST satellite images and avoid the unreliability caused by human factors.

Description

technical field [0001] The invention relates to an automatic identification method for mesoscale eddies in SST images, in particular to an automatic identification method for mesoscale eddies in SST images based on an active contour model. Background technique [0002] At present, the identification of oceanic mesoscale eddies in existing remote sensing images mainly relies on "expert visual interpretation". In addition, since the shape of mesoscale eddies in SST (sea surface temperature) images is not fixed, it is difficult to automatically identify mesoscale eddies. Therefore, it is necessary to design an active contour model-based The automatic identification method of mesoscale eddies in SST images can realize the automatic identification of ocean mesoscale vortices through intelligent methods. Contents of the invention [0003] The purpose of the present invention is to provide an automatic recognition method for mesoscale eddies in SST images based on an active cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06T5/00G06T5/20G06T7/136G06T7/149
Inventor 陈希李妍毛科峰
Owner NAT UNIV OF DEFENSE TECH
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