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Precision of degree of polarization estimation in the presence of additive Gaussian detector noise

✍ Scribed by Arnaud Bénière; François Goudail; Mehdi Alouini; Daniel Dolfi

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
366 KB
Volume
278
Category
Article
ISSN
0030-4018

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✦ Synopsis

We address the problem of degree of polarization (DOP) estimation in images limited by additive Gaussian detector noise. We derive and analyze the probability density function (PDF) of the pixelwise DOP estimate, which is shown to have significantly different statistical properties than when noise is Gamma distributed (speckle). We then determine the Cramer-Rao Lower Bound and the maximum likelihood estimator of the DOP. We deduce from this study practical solutions for characterizing and reducing the noise in these images.

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