Marine Oil Slick Detection Based on Multi-Polarimetric Features Matching Method Using Polarimetric Synthetic Aperture Radar Data

Abstract

Polarimetric synthetic aperture radar is an important tool in the effective detection of marine oil spills. In this study, two cases of Radarsat-2 Fine mode quad-polarimetric synthetic aperture radar datasets are exploited to detect a well-known oil seep area that collected over the Gulf of Mexico using the same research area, sensor, and time. A novel oil spill detection scheme based on a multi-polarimetric features model matching method using spectral pan-similarity measure (SPM) is proposed. A multi-polarimetric features curve is generated based on optimal polarimetric features selected using Jeffreys–Matusita distance considering its ability to discriminate between thick and thin oil slicks and seawater. The SPM is used to search for and match homogeneous unlabeled pixels and assign them to a class with the highest similarity to their spectral vector size, spectral curve shape, and spectral information content. The superiority of the SPM for oil spill detection compared to traditional spectral similarity measures is demonstrated for the first time based on accuracy assessments and computational complexity analysis by comparing with four traditional spectral similarity measures, random forest (RF), support vector machine (SVM), and decision tree (DT). Experiment results indicate that the proposed method has better oil spill detection capability, with a higher average accuracy and kappa coefficient (1.5–7.9% and 1–25% higher, respectively) than the four traditional spectral similarity measures under the same computational complexity operations. Furthermore, in most cases, the proposed method produces valuable and acceptable results that are better than the RF, SVM, and DT in terms of accuracy and computational complexity.

Marine Oil Slick Detection Using Improved Polarimetric Feature Parameters Based on Polarimetric Synthetic Aperture Radar Data

“…These datasets include information regarding the relative thickness of the oil slick, oil slick and look-alikes, as well as data for different types of oil slick. RADARSAT-2 provides operation imaging, thereby allowing access to data with a reduced chance of conflicts, including, e.g., Fine, Wide, Standard, Spotlight, and ScanSAR, and supports linear single-, dual-, and quad-polarization options [4,11,12]. The capabilities of RADARSAT-2 quad-polarization data, incorporating extremely low noise-floor and cross-talk corrections for different channels, makes it a remarkable system for oil spill detection research [11,12].…”

“…Figures 1 and 2 show data visualization images and sample areas of different oil slicks, together with the corresponding formation mechanisms of oil slicks under different scenarios in the experiment. and supports linear single-, dual-, and quad-polarization options [4,11,12]. The capabilities of RADARSAT-2 quad-polarization data, incorporating extremely low noise-floor and cross-talk corrections for different channels, makes it a remarkable system for oil spill detection research [11,12].…”

“…Marine oil spills present a global phenomenon, whether in open water or offshore, and receive extensive public attention as a major environmental pollution problem [1][2][3]. Hence, their rapid and effective detection is of vital significance for strengthening the emergency response involved in maritime traffic safety, search and rescue, and repairing the marine environment after disasters [1,[4][5][6].…”

“…The scattering echo information of a target is influenced by its physical characteristics such as material properties, geometric structure, and roughness [6,8]. Therefore, the Pol-SAR system obtains sufficient scattering information and measures the scattering matrix of the target through a record of amplitude and phase data measured at different polarization channels combination [4,6].…”

A Novel Method Based on Headspace-Ion Mobility Spectrometry for the Detection and Discrimination of Different Petroleum Derived Products in Seawater

“…Different technological and industrial developments over the past decades have brought about an increment in petroleum exploitation as well as the materialization of new petroleum-derived products (PDPs) [ 1 ]. The number of extraction, transport, or treatment processes where petroleum is involved has, therefore, increased noticeably, and as a consequence, oil and fuel spills have become more frequent [ 2 , 3 , 4 ]. Spills may be a consequence of the accidental collision of crude oil tankers or undesired leaks from underwater pipelines, among other reasons.…”