Hyperspectral imagery classification using sparse representations of convolutional neural network features
Open accessAbstract
In recent years, deep learning has been widely studied for remote sensing image analysis. In this paper, we propose a method for remotely-sensed image classification by using sparse representation of deep learning features. Specifically, we use convolutional neural networks (CNN) to extract deep features from high levels of the image data. Deep features provide high level spatial information created by hierarchical structures. Although the deep features may have high dimensionality, they lie in class-dependent sub-spaces or sub-manifolds. We investigate the characteristics of deep features by using a sparse representation classification framework. The experimental results reveal that the proposed method exploits the inherent low-dimensional structure of the deep features to provide better classification results as compared to the results obtained by widely-used feature exploration algorithms, such as the extended morphological attribute profiles (EMAPs) and sparse coding (SC).
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Deep features show powerful ability in image representation and understanding by providing high-level spatial information created by hierarchical structures rather than generating low-level features.
“This was mainly because deep features show powerful ability in image representation and understanding (Li et al., 2018b), by providing high-level spatial information which is created by hierarchical structures (Liang and Li, 2016) rather than generating low-level features (Zhao and Du, 2016).”
From Deep learning in remote sensing applications: A meta-analysis and review (2019) · cites this paper as Liang and Li, 2016
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- Authors
- Liang, H., & Li, Q.
- Affiliations
- Peking University (CN)
- Corresponding author
- Li, Qi
- ORCID
- Li, Qi
- Venue
- Remote Sensing
- Publisher
- MDPI AG
- Published
- 2016-01-27
- Volume
- 8
- Issue
- 2
- Pages
- 99
- ISSN
- 2072-4292 (ISSN-L)
- OpenAlex
- W2257669061
- Cited by
- 238
- References
- 35
- Citations by year
- 2026: 9 · 2025: 6 · 2024: 19 · 2023: 17 · 2022: 27 · 2021: 28 · 2020: 26 · 2019: 34 · 2018: 26 · 2017: 39 · 2016: 7
- FWCI
- 37.95
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Remote Sensing (publishedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Physical Sciences › Engineering › Media Technology › Remote-Sensing Image Classification
- Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Advanced Neural Network Applications
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Remote Sensing and Land Use
- Keywords
- hyperspectral image classification, sparse representation, convolutional neural network features, deep features, low-dimensional subspace, feature extraction, sparse coding
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