A Comparative Study for Hyperspectral Data Classification with Deep Learning and Dimensionality Reduction Techniques

Abstract

In recent years, hyperspectral imaging has been a popular subject in the remote sensing community by providing a rich amount of information for each pixel about fields. In general, dimensionality reduction techniques are utilized before classification in statistical pattern-classification to handle high-dimensional and highly correlated feature spaces. However, traditional classifiers and dimensionality reduction methods are difficult tasks in the spectral domain and cannot extract discriminative features. Recently, deep convolutional neural networks are proposed to classify hyperspectral images directly in the spectral domain. In this paper, we present comparative study among traditional data reduction techniques and convolutional neural network. The obtained results on hyperspectral image data sets show that our proposed CNN architecture improves the accuracy rates for classification performance, when compared to traditional methods by increasing the classification accuracy rate by 3% and 6%.

Keywords

• hyperspectral imaging
• deep learning
• dimensionality reduction
• classification
• convolutional neural networks
• hiperspektral görüntüleme
• derin öğrenme
• boyut azaltma
• sınıflandırma
• konvolüsyonel sinir ağları
• konvolüsyonel sinir ağları