Fast iterative image restoration with a spatially varying PSF
James G. Nagy, Dianne Prost O’Leary · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1997
We describe how to efficiently apply a spatially-variant blurring operator using linear interpolation of measured point spread functions. Numerical experiments illustrate that substantially better resolution can be obtained at very little additional cost compared to piecewise constant interpolation.