DHCAE: Deep Hybrid Convolutional Autoencoder Approach for Robust Supervised Hyperspectral Unmixing

Hyperspectral unmixing (HSU) is a crucial method to determine the fractional abundance of the material (endmembers) in each pixel. Most spectral unmixing methods are affected by low signal-to-noise ratios because of noisy pixels and bands simultaneously, requiring robust HSU techniques that exploit...

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Veröffentlicht in:Remote sensing (Basel, Switzerland) Jg. 14; H. 18; S. 4433
Hauptverfasser: Hadi, Fazal, Yang, Jingxiang, Ullah, Matee, Ahmad, Irfan, Farooque, Ghulam, Xiao, Liang
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Basel MDPI AG 01.09.2022
Schlagworte:
2D-convolutional autoencoder (AE) network
data collection
Deep learning
Dictionaries
hybrid 3D
hybrids
Hyperspectral imaging
hyperspectral unmixing (HSU)
Methods
Neural networks
Pixels
Remote sensing
Robustness
Spatial data
spectral–spatial
supervised
Two dimensional models
ISSN:2072-4292, 2072-4292
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Zusammenfassung:Hyperspectral unmixing (HSU) is a crucial method to determine the fractional abundance of the material (endmembers) in each pixel. Most spectral unmixing methods are affected by low signal-to-noise ratios because of noisy pixels and bands simultaneously, requiring robust HSU techniques that exploit both 3D (spectral–spatial dimension) and 2D (spatial dimension) domains. In this paper, we present a new method for robust supervised HSU based on a deep hybrid (3D and 2D) convolutional autoencoder (DHCAE) network. Most HSU methods adopt the 2D model for simplicity, whereas the performance of HSU depends on spectral and spatial information. The DHCAE network exploits spectral and spatial information of the remote sensing images for abundance map estimation. In addition, DHCAE uses dropout to regularize the network for smooth learning and to avoid overfitting. Quantitative and qualitative results confirm that our proposed DHCAE network achieved better hyperspectral unmixing performance on synthetic and three real hyperspectral images, i.e., Jasper Ridge, urban and Washington DC Mall datasets.
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ISSN:2072-4292
2072-4292
DOI:10.3390/rs14184433