In this Letter we propose an adaptive scene-based nonuniformity correction method for fixed-pattern noise removal in imaging arrays. It is based on the minimization of the total variation of the estimated irradiance, and the resulting function is optimized by an isotropic total variation approach making use of an alternating minimization strategy. The proposed method provides enhanced results when applied to a diverse set of real IR imagery, accurately estimating the nonunifomity parameters of each detector in the focal-plane array at a fast convergence rate, while also forming fewer ghosting artifacts.
© 2011 Optical Society of America
Original Manuscript: August 10, 2010
Revised Manuscript: November 9, 2010
Manuscript Accepted: December 2, 2010
Published: January 10, 2011
Esteban Vera, Pablo Meza, and Sergio Torres, "Total variation approach for adaptive nonuniformity correction in focal-plane arrays," Opt. Lett. 36, 172-174 (2011)