Observation of sea-ice dynamics using synthetic aperture radar images: automated analysis

Two techniques for automated sea-ice tracking, image pyramid area correlation (hierarchical correlation) and feature tracking, are described. Each technique is applied to a pair of Seasat SAR sea-ice images. The results compare well with each other and with manually tracked estimates of the ice velo...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 1988-01, Vol.26 (1), p.38-48
Main Authors: Vesecky, J.F., Samadani, R., Smith, M.P., Daida, J.M., Bracewell, R.N.
Format: Article
Language:English
Subjects:
Clouds
Displays
Earth, ocean, space
Exact sciences and technology
External geophysics
Image analysis
image processing
Image reconstruction
Marine
Oceanography
Physics of the oceans
Radar imaging
Radar tracking
Remote sensing
remote sensing equipment
satellite sensing
Satellites
Sea ice
Synthetic aperture radar
tracking
velocity
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Summary:Two techniques for automated sea-ice tracking, image pyramid area correlation (hierarchical correlation) and feature tracking, are described. Each technique is applied to a pair of Seasat SAR sea-ice images. The results compare well with each other and with manually tracked estimates of the ice velocity. The advantages and disadvantages of these automated methods are pointed out. Using these ice velocity field estimates it is possible to construct one sea-ice image from the other member of the pair. Comparing the reconstructed image with the observed image, errors in the estimated velocity field can be recognized and a useful probable error display created automatically to accompany ice velocity estimates. It is suggested that this error display may be useful in segmenting the sea ice observed into regions that move as rigid plates of significant ice velocity shear and distortion.< >
ISSN:0196-2892
1558-0644
DOI:10.1109/36.2998