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Self-similar texture modeling using FARIMA processes with applications to satellite images

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2 Author(s)
Ilow, J. ; Dept. of Electr. & Comput. Eng., Dalhousie Univ., Halifax, NS, Canada ; Leung, H.

A texture model for synthetic aperture radar (SAR) images is presented. Specifically, a sea surface in satellite images is modeled using the two-dimensional (2-D) fractionally integrated autoregressive-moving average (FARIMA) process with a non-Gaussian white driving sequence. The FARIMA process is an ARMA type model which is asymptotically self-similar. It captures the long-range as well as short-range spatial dependence structure of an image with a small number of parameters. To estimate these parameters, an efficient estimation procedure based on a spectral fit is presented. Real-life ocean surveillance radar images collected by the RADARSAT sensor are used to evaluate the practicality of this FARIMA approach. Using the radial power spectral density, the new model is shown to provide a more accurate description of the SAR images than the conventional moving-average (MA), autoregressive (AR), and fractionally differenced (FD) models

Published in:

Image Processing, IEEE Transactions on  (Volume:10 ,  Issue: 5 )

Date of Publication:

May 2001

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