Influence of background estimation on the superresolution properties of nonlinear image restoration algorithms

1999 ◽  
Author(s):  
Geert M. P. van Kempen ◽  
Lucas J. van Vliet
Keyword(s):  
Image Restoration ◽  
Background Estimation ◽  
Nonlinear Image Restoration ◽  
Restoration Algorithms

Fast Adaptive Iterative Image Restoration Algorithms

1988 ◽  
Author(s):  
Serafim N. Efstratiadis ◽  
Aggelos K. Katsaggelos
Keyword(s):  
Image Restoration ◽  
Restoration Algorithms

scholarly journals HST Image Restoration: Current Capabilities and Future Prospects

1994 ◽  
Vol 158 ◽  
pp. 61-69 ◽  
Author(s):  
Robert J. Hanisch ◽  
Richard L. White
Keyword(s):  
Image Restoration ◽  
Dynamic Range ◽  
Hubble Space Telescope ◽  
Spherical Aberration ◽  
Wide Field ◽  
Secondary Mirror ◽  
Faint Object ◽  
Spread Function ◽  
Restoration Algorithms ◽  
Space Variant

The spherical aberration in the primary mirror of the Hubble Space Telescope causes more than 80% of the light from a point source to be spread into a halo of radius of 2–3 arcsec. The point spread function (PSF) is both time variant (resulting from spacecraft jitter and desorption of the secondary mirror support structure) and space variant (owing to the Cassegrain repeater optics in the Wide Field / Planetary Camera). A variety of image restoration algorithms have been utilized on HST data with some success, although optimal restorations require better modeling of the PSF and the development of efficient restoration algorithms that accommodate a spacevariant PSF. The first HST servicing mission (December 1993) will deploy a corrective optics system for the Faint Object Camera and the two spectrographs and a second generation WF/PC with internal corrective optics. As simulations demonstrate, however, the restoration algorithms developed now for aberrated images will be very useful for removing the remaining diffraction features and optimizing dynamic range in post-servicing mission data.

Analytical tools for nonlinear image restoration

1983 ◽  
Vol 22 (10) ◽  
pp. 1424 ◽  
Author(s):  
William A. Porter ◽  
Philip D. Olivier
Keyword(s):  
Image Restoration ◽  
Nonlinear Image Restoration ◽  
Analytical Tools
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