14 November 1996 DC image restoration for astronomical applications
Author Affiliations +
Abstract
In astronomical imaging techniques, the relative level of the zero-frequency component of an image is usually unknown relative to all other components. This problem arises because the overall object brightness cannot easily be separated from background when viewing small, faint objects. This affects image interpretability and therefore is a problem that is ubiquitous in high-resolution astronomical imaging. Potential solutions to this problem include various interpolation techniques and image-constraint techniques. These approaches are described, and performance is evaluated with an optimal interpolator that accounts for sample density, signal-to-noise ratio, and the object's overall shape. Novel analytic expressions are obtained which provide insight into the limitations of any restoration approach, and practical means for achieving those limits.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Richard B. Holmes, Richard B. Holmes, } "DC image restoration for astronomical applications", Proc. SPIE 2847, Applications of Digital Image Processing XIX, (14 November 1996); doi: 10.1117/12.258220; https://doi.org/10.1117/12.258220
PROCEEDINGS
8 PAGES


SHARE
RELATED CONTENT

Post-Processing Of Imagery From Active Optics
Proceedings of SPIE (July 08 1976)
Image restoration algorithms based on the bispectrum
Proceedings of SPIE (October 31 1991)
Superresolution by spatial-frequency aliasing
Proceedings of SPIE (June 26 1996)
Nonlinear image restoration algorithm with artifact reduction
Proceedings of SPIE (September 20 1994)

Back to Top