Hyperspectral remote sensing identification of marine oil emulsions based on the fusion of spatial and spectral features  

作　　者：Xinyue Huang Yi Ma Zongchen Jiang Junfang Yang 

机构地区：[1]School of Geography and Marine Science,Nanjing University,Nanjing 210023,China [2]First Institute of Oceanography,Ministry of Natural Resources,Qingdao 266061,China [3]Marine Telemetry Technology Innovation Center,Ministry of Natural Resources,Qingdao 266061,China [4]Harbin Institute of Technology,Harbin 150001,China [5]China University of Petroleum(East China),Qingdao 266061,China

出　　处：《Acta Oceanologica Sinica》2024年第3期139-154,共16页海洋学报（英文版）

基　　金：The National Natural Science Foundation of China under contract Nos 61890964 and 42206177;the Joint Funds of the National Natural Science Foundation of China under contract No.U1906217.

摘　　要：Marine oil spill emulsions are difficult to recover,and the damage to the environment is not easy to eliminate.The use of remote sensing to accurately identify oil spill emulsions is highly important for the protection of marine environments.However,the spectrum of oil emulsions changes due to different water content.Hyperspectral remote sensing and deep learning can use spectral and spatial information to identify different types of oil emulsions.Nonetheless,hyperspectral data can also cause information redundancy,reducing classification accuracy and efficiency,and even overfitting in machine learning models.To address these problems,an oil emulsion deep-learning identification model with spatial-spectral feature fusion is established,and feature bands that can distinguish between crude oil,seawater,water-in-oil emulsion(WO),and oil-in-water emulsion(OW)are filtered based on a standard deviation threshold–mutual information method.Using oil spill airborne hyperspectral data,we conducted identification experiments on oil emulsions in different background waters and under different spatial and temporal conditions,analyzed the transferability of the model,and explored the effects of feature band selection and spectral resolution on the identification of oil emulsions.The results show the following.(1)The standard deviation–mutual information feature selection method is able to effectively extract feature bands that can distinguish between WO,OW,oil slick,and seawater.The number of bands was reduced from 224 to 134 after feature selection on the Airborne Visible Infrared Imaging Spectrometer(AVIRIS)data and from 126 to 100 on the S185 data.(2)With feature selection,the overall accuracy and Kappa of the identification results for the training area are 91.80%and 0.86,respectively,improved by 2.62%and 0.04,and the overall accuracy and Kappa of the identification results for the migration area are 86.53%and 0.80,respectively,improved by 3.45%and 0.05.(3)The oil emulsion identification model has a certain degree of t

关 键 词：oil emulsions IDENTIFICATION hyperspectral remote sensing feature selection convolutional neural network(CNN) spatial-temporal transferability 

分 类 号：X834[环境科学与工程—环境工程] X87