研究目的
To improve the robustness of domain adaptation methods in hyperspectral image classification to label noise in the source domain.
研究成果
The proposed method effectively handles domain shift and label noise in hyperspectral image classification by combining subspace alignment and a low-rank representation classifier, demonstrating robustness and superior performance compared to baseline methods.
研究不足
The method relies on the assumption that subspaces can be aligned effectively; performance may degrade with very high noise ratios or insufficient training samples. It does not utilize deep learning features, which could further improve results.
1:Experimental Design and Method Selection:
The method involves feature-level subspace alignment using PCA and a linear transformation, and classifier-level robust low-rank representation.
2:Sample Selection and Data Sources:
Two hyperspectral image datasets are used: Pavia scenes and Shanghai-Hangzhou scenes, with labeled source domain pixels and unlabeled target domain pixels.
3:List of Experimental Equipment and Materials:
Hyperspectral sensors (Digital Airborne Imaging Spectrometer for Pavia, EO-1 Hyperion for Shanghai-Hangzhou), computational tools for PCA and optimization.
4:Experimental Procedures and Operational Workflow:
Normalize data, apply PCA to obtain subspaces, align subspaces, project data, compute low-rank representation coefficients using augmented Lagrange multiplier method, and predict labels.
5:Data Analysis Methods:
Average accuracy (AA) is used to evaluate classification performance, with results averaged over 20 rounds to reduce randomness.
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