Conventional estimation techniques of Stokes images from observed radiance images through different polarization filters suffer from noise contamination that hampers correct interpretation or even leads to unphysical estimated signatures. This paper presents an efficient restoration technique based on nonlocal means, permitting accurate estimation of smoothly variable polarization signatures in the Stokes image while preserving sharp transitions. The method is assessed on simulated data as well as on real images.
© 2012 Optical Society of America
Original Manuscript: April 18, 2012
Revised Manuscript: June 25, 2012
Manuscript Accepted: July 16, 2012
Published: August 31, 2012
Vol. 7, Iss. 11 Virtual Journal for Biomedical Optics
Sylvain Faisan, Christian Heinrich, François Rousseau, Alex Lallement, and Jihad Zallat, "Joint filtering estimation of Stokes vector images based on a nonlocal means approach," J. Opt. Soc. Am. A 29, 2028-2037 (2012)