title: Comparisons of linear and nonlinear image restoration.
abstract: Exit wave restoration using focus series of images has become a widely used technique to improve image resolution and interpretation. To understand the effects of the imaging approximations used, we have critically compared the specimen exit wave functions restored using the efficient linear Wiener filter, with a general nonlinear maximum likelihood method.
authors.affiliation: Department of Materials, Oxford University, Parks Road, Oxford OX1 3PH, UK. lanyun.chang@materials.ox.ac.uk
authors.forename: Lan-Yun
authors.initials: LY
authors.lastname: Chang
authors.forename: Angus I
authors.initials: AI
authors.lastname: Kirkland