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Optical Engineering • Open Access

New approach to measure the on-orbit point spread function for spaceborne imagers
Author(s): Lingling Guo; Zepeng Wu; Liguo Zhang; Jianyue Ren

Paper Abstract

A new approach to estimate the point spread function (PSF) of remotely sensed images is proposed here based on multiple natural point-like sources, i.e., subimages of the observed image. First the conditional subimages are extracted, and then a blind deconvolution technique is used to derive the PSF from these subimages. For a sampled imaging system with signal-to-noise ratio <20  dB , this method can provide a relatively accurate PSF result. Moreover, the estimated PSF can be applied to image restoration using Wiener filtering or other nonblind restoration methods.

Paper Details

Date Published: 4 March 2013
PDF: 7 pages
Opt. Eng. 52(3) 033602 doi: 10.1117/1.OE.52.3.033602
Published in: Optical Engineering Volume 52, Issue 3
Show Author Affiliations
Lingling Guo, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Zepeng Wu, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Liguo Zhang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Jianyue Ren, Changchun Institute of Optics, Fine Mechanics and Physics (China)


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