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Improved Hyperspectral Image Classification Using Variational Mode Decomposition

机译:使用变分模式分解改进高光谱图像分类

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Hyperspectral data accounts for a huge volume of information. Analysing such a large data is very difficult. Besides atmospheric distortion also affect such analysis. Many denoising techniques have been introduced to reduce the dimensionality of the data as well as removing the distortions. This helps in improving the accuracy of the classification. The work proposes the application of two dimensional Variational Mode Decomposition (VMD) as a feature extraction method to the acquired image. VMD decomposes the image into different intrinsic mode functions (IMFs). The lower order modes are removed and the higher ones are combined to reconstruct the original image. The modes are then used as features for classification. Classification is performed taking different combinations of the extracted modes. Orthogonal Matching Pursuit (OMP) and Basic Thresholding Classifier (BTC) are the classifiers used. Comparison of accuracy is made.
机译:高光谱数据占大量信息。分析这么大的数据非常困难。除了大气畸变,还影响这种分析。已经引入了许多去噪技术以降低数据的维度以及消除失真。这有助于提高分类的准确性。该工作提出了将二维变化模式分解(VMD)作为特征提取方法应用于所获取的图像。 VMD将图像分解为不同的内在模式功能(IMF)。删除下顺序模式,并将较高的模式组合以重建原始图像。然后将模式用作分类的特征。采用提取模式的不同组合进行分类。正交匹配追求(OMP)和基本阈值分类器(BTC)是使用的分类器。进行准确性的比较。

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