Sea SAR Images Analysis to Detect Oil Slicks in Algerian Coasts

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• 作者：Bahia Lounis (1)
  Aichouche Belhadj-Aissa (1)
  
• 关键词：Oil slicks detection ; SAR image analysis ; Histogram partition ; Contextual information ; Thresholding
• 刊名：Journal of Mathematical Modelling and Algorithms
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：13
• 期：4
• 页码：371-386
• 全文大小：2,616 KB
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• 作者单位：Bahia Lounis (1)
  Aichouche Belhadj-Aissa (1)
  
  1. Université des Sciences & Technologie Houari Boumediene (USTHB), BP 32 El Alia, Bab Ezzouar - Fac. d’Electronique & Informatique / LTIR, 16111, Alger, Algérie
  
• ISSN：1572-9214

文摘

In this paper, we investigate the performance of partition features derived from histogram analysis to isolate dark spots which are candidates to be oil spills in SAR images. The first partition is carried out to obtain preliminary clusters of the pixels on the basis of their grey level intensities and threshold values deduced from the histogram. The detection process is achieved by a contextual partition where the conflict pixels are attributed to their region involving local information about pre-etiqueted pixels neighbouring the pixel in question. For pixel’s assignment, we propose two decision criteria: the first based on Local Probability Maximization (LPM) while the second uses a Chi-squared test (χ 2). We considered variable context in order to characterize the sea texture and dark spots. This method is tested on ERS-2 SAR Precision Image (PRI) covering Algerian coasts and gave promising results which are useful for the identification process.