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Supervised Graph Embedding for Polarimetric SAR Image Classification

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5 Author(s)
Lei Shi ; Remote Sensing Group, State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing , Wuhan University, Wuhan, China ; Lefei Zhang ; Jie Yang ; Liangpei Zhang
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This letter introduces an efficiency-manifold-learning-based supervised graph embedding (SGE) algorithm for polarimetric synthetic aperture radar (POLSAR) image classification. We use a linear dimensionality reduction technology named SGE to obtain a low-dimensional subspace which can preserve the discriminative information from training samples. Various POLSAR decomposition features are stacked into the input feature cube in the original high-dimensional feature space. The SGE is then implemented to project the input feature into the learned subspace for subsequent classification. The suggested method is validated by the full polarimetric airborne SAR system EMISAR, in Foulum, Denmark. The experiments show that the SGE presents a favorable classification accuracy and the valid components of the multifeature cube are also distinguished.

Published in:

IEEE Geoscience and Remote Sensing Letters  (Volume:10 ,  Issue: 2 )