Introducing a New Image Quality Index for Evaluating Despeckling Filtering Operation in SAR Images
Conference: EUSAR 2014 - 10th European Conference on Synthetic Aperture Radar
06/03/2014 - 06/05/2014 at Berlin, Germany
Proceedings: EUSAR 2014
Pages: 4Language: englishTyp: PDF
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Authors:
Gomez, L. (Electronic Engineering and Automatic Department, University of Las Palmas G.C, EITE, Campus Tafira, 35017, Spain)
Buemi, M. E.; Jacobo-Berlles, J.; Mejail, M. (Computation and Image Processing Group, University of Buenos Aires, Argentina)
Abstract:
SAR (Synthetic Aperture Radar) images are corrupted with a multiplicative granular-like noise pattern known as speckle. The goal for a despeckling filter consists of suppressing the speckle while preserving all the scene features such as texture, point-type targets, and, especially, edges. There exist several speckle filtering and a relevant number of image quality indexes to evaluate the performances of a filtering operation on a SAR image. To decide the superiority of a despeckling filter other one, if so, is not a trivial issue. In this work, we present a new estimator based on the gradient-ratio operator which allows to help in evaluating a filter realization on SAR images.