Improved interframe registration based nonuniformity correction for focal plane arrays

► We introduce an improved interframe registration based nonuniformity correction algorithm. ► A new masked phase correlation algorithm is presented to obtain reliable shift estimates. ► A decision rule is introduced to exclude the abnormal data in the error image. ► The variable step size strategy is presented to improve the correction precision. ► Our method provides the key advantages of fast convergence and minor residual error.