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Super-resolution by pupil plane phase filtering
L N HAZRA, N REZA
Published in INDIAN ACAD SCIENCES
2010
Volume: 75
   
Issue: 5
Pages: 855 - 867
Abstract
Resolution capability of any optical imaging system is limited by residual aberrations as well as diffraction effects. Overcoming this fundamental limit is called super-resolution. Several new paradigms for super-resolution in optical systems use 'a posteriori' digital image processing. In these ventures the three-dimensional point spread function (PSF) of the lens plays a key role in image acquisition. A straightforward tailoring of the PSF can be performed by appropriate pupil plane filtering. With a brief review of the state-of-art in this research area, this paper dwells upon the inverse problem of global optimization of the pupil function by phase filtering in accordance with the desired PSF. © Indian Academy of Sciences.
About the journal
JournalPramana - Journal of Physics
PublisherINDIAN ACAD SCIENCES
ISSN0304-4289