SAR (Synthetic Aperture Radar) sea ice image segmentation method adopting SRGB-RMRF

An image segmentation and image technology, applied in image analysis, image enhancement, image data processing, etc., can solve the problems of SAR sea ice image coherent speckle noise and other problems

Inactive Publication Date: 2016-04-20
HEFEI UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a SAR sea ice image segmentation method using SRGB-RMRF to solve the problem that the SAR sea ice image is seriously affected by coherent speckle noise, and to provide subsequent regional MRF wit

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  • SAR (Synthetic Aperture Radar) sea ice image segmentation method adopting SRGB-RMRF
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  • SAR (Synthetic Aperture Radar) sea ice image segmentation method adopting SRGB-RMRF

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Embodiment Construction

[0048] Such as figure 1 As shown, the SAR sea ice image segmentation method using SRGB-RMRF includes the following steps:

[0049] (1), using the SRGB method to segment the SAR sea ice image:

[0050] 1a) performing bilateral filtering on the image;

[0051] Given an input image y, the output image h after bilateral filtering is:

[0052] h ( x ) = 1 Z ∫ y ( ϵ ) c ( ϵ , x ) ...

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Abstract

The invention discloses a segmentation method for SAR (Synthetic Aperture Radar) sea ice images. The segmentation method is mainly used for solving the problem that segmentation results cannot actually reflect the distribution condition of earth surface sea ice due to the fact that the SAR sea ice images are severely affected by coherent speckle noises. The segmentation method comprises the implementation procedures: (1) filtering the SAR sea ice images by adopting a two-sided filter; (2) carrying out initialized segmentation by adopting improved edge weight computation model and intra-regional differences; (3) constructing a regional MRF model based on an initialized segmentation structural element region adjacency graph; (4) integrating an inter-regional intensity difference penalty function into MRF; (5) erasing edge pixels, thereby obtaining a final segmentation result. According to the segmentation method, the performance of segmentation of the SAR sea ice images is remarkably improved.

Description

technical field [0001] The invention relates to the field of image segmentation methods, in particular to a SAR sea ice image segmentation method using SRGB-RMRF. Background technique [0002] In sea areas covered by sea ice, sea ice information is very important for ship route design. As the global climate gradually warms and the polar glaciers melt, sea ice information is also of great significance in the field of climate research. Synthetic Aperture Radar (SAR), as a high-resolution microwave remote sensing imaging radar, has the characteristics of all-weather, all-time, multi-band, multi-polarization, variable viewing angle, and strong penetrability, making it widely used. applied to sea ice monitoring. SAR sea ice image segmentation, as one of the key technologies in this field, has attracted more and more attention. [0003] The classic SAR sea ice image segmentation methods mainly include: threshold method, hybrid method combined with edge detection and region mergi...

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T2207/10044G06T2207/20028
Inventor 杨学志周芳王成敏夏天
Owner HEFEI UNIV OF TECH
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