Spectral Characteristics of Weathered Oil Films on Water Surface and Selection of Potential Sensitive Bands in Hyper-Spectral Images
Spectral Characteristics of Weathered Oil Films on Water Surface and Selection of Potential Sensitive Bands in Hyper-Spectral Images
复制标题
水面风化油膜的光谱特征及高光谱图像中位敏感波段的选择
DOI：
10.1007/s12524-016-0568-3
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发表时间：
2017-02-01
影响因子：
2.5
通讯作者：
Han, Liang
中科院分区：
文献类型：
--
作者：
Liu, Bingxin;Li, Ying;Han, Liang
本研究通过测定风化后0、1、3、12、48 h水膜和油膜的反射率数据，分析了风化油膜的光谱反射特征。在实验和分析的基础上，利用高光谱数据的光谱响应函数对实测数据进行重采样。然后使用图像数据的环境噪声等效反射率差来评估每个波段检测油膜的灵敏度。对在不同风化阶段检测油膜最有效的波段进行了评估。结果表明，在这项研究中使用的星载高光谱传感器有可能区分不同阶段的风化油膜。在0，第1，第3，和第12小时的风化，水和油膜之间的歧视，并在不同阶段的风化油膜之间实现了在可见光和近红外波段。48 h后，潜在的敏感带主要分布在近红外区。该实验为油膜监测高光谱数据的波段选择提供了一种方法。
This study was an experiment to measure the reflectance data of water and oil films at the 0, 1st, 3rd, 12th, and 48th h of weathering and analyzed the spectral reflectance characteristics of the weathered oil films. Based on the experiment and analysis, the measured data were resampled through the spectral response function of the hyperspectral data. The environmental noise equivalent reflectance difference of the image data was then used to assess the sensitivity of each band for the detection of oil films. The bands that were most effective in detecting oil films in various stages of weathering were assessed. Results indicated that the spaceborne hyperspectral sensor employed in this study had the potential to discriminate among oil films in different stages of weathering. At the 0, 1st, 3rd, and 12th h of weathering, discrimination between water and oil films and among oil films in varying stages of weathering was achieved at the visible and near-infrared bands. After 48 h, the potential sensitive bands were distributed mainly in the near-infrared region. This experiment can provide a method to select bands of hyperspectral data for monitoring oil films.