Stacked Autoencoder Based Feature Extraction and Superpixel Generation for Multifrequency PolSAR Image Classification

  • Tushar GadhiyaEmail author
  • Sumanth Tangirala
  • Anil K. Roy
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11942)


In this paper we are proposing classification algorithm for multifrequency Polarimetric Synthetic Aperture Radar (PolSAR) image. Using PolSAR decomposition algorithms 33 features are extracted from each frequency band of the given image. Then, a two-layer autoencoder is used to reduce the dimensionality of input feature vector while retaining useful features of the input. This reduced dimensional feature vector is then applied to generate superpixels using simple linear iterative clustering (SLIC) algorithm. Next, a robust feature representation is constructed using both pixel as well as superpixel information. Finally, softmax classifier is used to perform classification task. The advantage of using superpixels is that it preserves spatial information between neighboring PolSAR pixels and therefore minimizes the effect of speckle noise during classification. Experiments have been conducted on Flevoland dataset and the proposed method was found to be superior to other methods available in the literature.


Polarimetric Synthetic Aperture Radar (PolSAR) Multifrequency PolSAR image classification Autoencoder Superpixels Simple linear iterative clustering (SLIC) Optimized Wishart Network (OWN) 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Tushar Gadhiya
    • 1
    Email author
  • Sumanth Tangirala
    • 1
  • Anil K. Roy
    • 1
  1. 1.Dhirubhai Ambani Institute of Information and Communication TechnologyGandhinagarIndia

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