Sea Ice Extraction in SAR Images via a Spatially Constrained Gamma Mixture Model
Sea ice plays an important role in climate change research and maritime shipping safety, and SAR imaging technology provides important technical support for sea ice extraction. However, traditional methods have limitations such as low efficiency, model complexity, and excessive human interference. F...
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2023
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ftdoajarticles:oai:doaj.org/article:ad1a38ab52564a5e81947fa48f9fb11c 2023-07-30T04:06:41+02:00 Sea Ice Extraction in SAR Images via a Spatially Constrained Gamma Mixture Model Xue Shi Yu Wang Haotian You Jianjun Chen 2023-06-01T00:00:00Z https://doi.org/10.3390/su151310374 https://doaj.org/article/ad1a38ab52564a5e81947fa48f9fb11c EN eng MDPI AG https://www.mdpi.com/2071-1050/15/13/10374 https://doaj.org/toc/2071-1050 doi:10.3390/su151310374 2071-1050 https://doaj.org/article/ad1a38ab52564a5e81947fa48f9fb11c Sustainability, Vol 15, Iss 10374, p 10374 (2023) sea ice extraction high-resolution SAR image spatial information Gamma mixture model expectation maximization Bayesian information criteria Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 article 2023 ftdoajarticles https://doi.org/10.3390/su151310374 2023-07-16T00:34:35Z Sea ice plays an important role in climate change research and maritime shipping safety, and SAR imaging technology provides important technical support for sea ice extraction. However, traditional methods have limitations such as low efficiency, model complexity, and excessive human interference. For that, a novel sea ice segmentation algorithm based on a spatially constrained Gamma mixture model (GaMM) is proposed in this paper. The advantage of the proposed algorithm is automatic, efficient, and accurate sea ice extraction. The algorithm first uses GaMM to build the probability distribution of sea ice in SAR images. Considering the similarity in the class attributions of local pixels, the smoothing coefficient is defined by the class attributes of neighboring pixels. Then, the prior distribution of the label is modeled by combining Gibbs distribution and the smoothing coefficient to improve the accuracy of sea ice extraction. The proposed algorithm utilizes the Expectation maximization method to estimate model parameters, and determines the optimal number of classes using Bayesian information criteria, aiming to achieve fast and automatic sea ice extraction. To test the effectiveness of the proposed algorithm, numerous experiments were conducted on simulated and real high-resolution SAR images. The results show that the proposed algorithm has high accuracy and efficiency. Moreover, the proposed algorithm can obtain the optimal number of classes and avoid over-segmentation or under-segmentation caused by manually setting the number of classes. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles Sustainability 15 13 10374 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea ice extraction high-resolution SAR image spatial information Gamma mixture model expectation maximization Bayesian information criteria Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
spellingShingle |
sea ice extraction high-resolution SAR image spatial information Gamma mixture model expectation maximization Bayesian information criteria Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Xue Shi Yu Wang Haotian You Jianjun Chen Sea Ice Extraction in SAR Images via a Spatially Constrained Gamma Mixture Model |
topic_facet |
sea ice extraction high-resolution SAR image spatial information Gamma mixture model expectation maximization Bayesian information criteria Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
description |
Sea ice plays an important role in climate change research and maritime shipping safety, and SAR imaging technology provides important technical support for sea ice extraction. However, traditional methods have limitations such as low efficiency, model complexity, and excessive human interference. For that, a novel sea ice segmentation algorithm based on a spatially constrained Gamma mixture model (GaMM) is proposed in this paper. The advantage of the proposed algorithm is automatic, efficient, and accurate sea ice extraction. The algorithm first uses GaMM to build the probability distribution of sea ice in SAR images. Considering the similarity in the class attributions of local pixels, the smoothing coefficient is defined by the class attributes of neighboring pixels. Then, the prior distribution of the label is modeled by combining Gibbs distribution and the smoothing coefficient to improve the accuracy of sea ice extraction. The proposed algorithm utilizes the Expectation maximization method to estimate model parameters, and determines the optimal number of classes using Bayesian information criteria, aiming to achieve fast and automatic sea ice extraction. To test the effectiveness of the proposed algorithm, numerous experiments were conducted on simulated and real high-resolution SAR images. The results show that the proposed algorithm has high accuracy and efficiency. Moreover, the proposed algorithm can obtain the optimal number of classes and avoid over-segmentation or under-segmentation caused by manually setting the number of classes. |
format |
Article in Journal/Newspaper |
author |
Xue Shi Yu Wang Haotian You Jianjun Chen |
author_facet |
Xue Shi Yu Wang Haotian You Jianjun Chen |
author_sort |
Xue Shi |
title |
Sea Ice Extraction in SAR Images via a Spatially Constrained Gamma Mixture Model |
title_short |
Sea Ice Extraction in SAR Images via a Spatially Constrained Gamma Mixture Model |
title_full |
Sea Ice Extraction in SAR Images via a Spatially Constrained Gamma Mixture Model |
title_fullStr |
Sea Ice Extraction in SAR Images via a Spatially Constrained Gamma Mixture Model |
title_full_unstemmed |
Sea Ice Extraction in SAR Images via a Spatially Constrained Gamma Mixture Model |
title_sort |
sea ice extraction in sar images via a spatially constrained gamma mixture model |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/su151310374 https://doaj.org/article/ad1a38ab52564a5e81947fa48f9fb11c |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Sustainability, Vol 15, Iss 10374, p 10374 (2023) |
op_relation |
https://www.mdpi.com/2071-1050/15/13/10374 https://doaj.org/toc/2071-1050 doi:10.3390/su151310374 2071-1050 https://doaj.org/article/ad1a38ab52564a5e81947fa48f9fb11c |
op_doi |
https://doi.org/10.3390/su151310374 |
container_title |
Sustainability |
container_volume |
15 |
container_issue |
13 |
container_start_page |
10374 |
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1772819545832030208 |