A Neural Network Based Classification for Sea Ice Types on X-Band SAR Images

• Published in: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
• Main Authors: Ressel, Rudolf, Frost, Anja, Lehner, Susanne
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: IEEE - Institute of Electrical and Electronics Engineers 2015
• Subjects: SAR-Signalverarbeitung; Institut für Methodik der Fernerkundung; Barents Sea; Sea ice
• Online Access: https://elib.dlr.de/90934/; http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7122229

We examine the performance of an automated sea ice classification algorithm based on TerraSAR-X ScanSAR data. In the first step of our process chain, GLCM-based texture features are extracted from the image. In the second step, these data are fed into an artificial neural network to classify each pixel. Performance of our implementation is examined by utilizing a time series of ScanSAR images in the Western Barents Sea, acquired in spring 2013. The network is trained on the initial image of the time series and then applied to subsequent images. We obtain a reasonable classification accuracy of at least 70% depending on the choice of our ice type regime, given the incidence angle range of the training data matches that of the classified image. Computational cost of our approach is sufficiently moderate to consider this classification procedure a promising step towards operational, near real time ice charting.