Journal ArticleDOI
SVM-Based Sea Ice Classification Using Textural Features and Concentration From RADARSAT-2 Dual-Pol ScanSAR Data
Huiying Liu,Huadong Guo,Lu Zhang +2 more
TLDR
The sea ice concentration parameter could play a role in SVM classification, and the whole process provided an effective way to classify sea ice using dual polarization ScanSAR data.Abstract:
An approach to sea ice classification using dual polarization RADARSAT-2 ScanSAR data is presented in this paper. It is based on support vector machine (SVM). In addition to backscatter coefficients and gray-level cooccurrence matrix (GLCM) texture features, sea ice concentration was introduced as a classification basis. To better analyze the backscatter information of sea ice types, we considered two steps that could improve the ScanSAR image quality, the noise floor stripe reduction and the incidence angle normalization. Then, effective GLCM texture characteristics from both polarizations were selected using the proper parameters. The third type of information, sea ice concentration, was extracted from the initial SVM classification result after the optimal SVM model was achieved from the training. The final result was generated by implementing the SVM twice and the decision tree once. Using this method, the classification was improved in two aspects, both of which were related to sea ice concentration. The results showed that the sea ice concentration parameter was effective in dealing with open water and in discriminating pancake ice from old ice. Finally, the maximum likelihood (ML) was run as a comparative test. In conclusion, the sea ice concentration parameter could play a role in SVM classification, and the whole process provided an effective way to classify sea ice using dual polarization ScanSAR data.read more
Citations
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Journal ArticleDOI
Satellite SAR Data-based Sea Ice Classification: An Overview
TL;DR: A review of the main approaches developed for sea ice classification using satellite imagery is presented in this article, where the main techniques used for ice classification and ice charting in several national ice services are considered.
Journal ArticleDOI
Method for detection of leads from Sentinel-1 SAR images
TL;DR: In this article, an automatic lead detection based on synthetic aperture radar images is described that can be applied to a wide range of Sentinel-1 scenes, using both the HH and the HV channels instead of single co-polarized observations.
Journal ArticleDOI
Earthquake-Induced Building Damage Detection with Post-Event Sub-Meter VHR TerraSAR-X Staring Spotlight Imagery
TL;DR: A new concept for individual building damage assessment using a post-event sub-meter very high resolution (VHR) SAR image and a building footprint map is presented and can obtain good overall accuracy, which is above 80% with the three classifiers.
Journal ArticleDOI
Incidence Angle Dependence of First-Year Sea Ice Backscattering Coefficient in Sentinel-1 SAR Imagery Over the Kara Sea
Marko Mäkynen,Juha Karvonen +1 more
TL;DR: The incidence angle dependence of the sea ice backscattering coefficient is studied for Sentinel-1 (S-1) extra wide (EW) mode dual-polarization (HH/HV) synthetic aperture radar (SAR) imagery acquired over the Kara Sea under winter and summer melting conditions.
Journal ArticleDOI
Incidence Angle Dependence of HH-Polarized C- and L-Band Wintertime Backscatter Over Arctic Sea Ice
Mallik Mahmud,Torsten Geldsetzer,Stephen E. L. Howell,John J. Yackel,Vishnu Nandan,Randall K. Scharien +5 more
TL;DR: It is demonstrated that after applying incidence angle normalization, the variability of C- and L-band SAR backscatter reduces and separability of ice types increase substantially.
References
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