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Proceedings Paper

Recursive Filters to Remove Failures on Electronographic Plates
Author(s): Preben J. Grosbol
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Paper Abstract

The large amount of artifacts on electronographic plates has to be removed automatically using fast digital filters. A group of one-dimensional non-linear recursive filters based on zero and first order estimates of the expected pixel value is investigated. Modifications are made when the difference between the pixel value and the estimate is larger than a given limit. A satisfactory performance can be achieved using a variable limit which depends on the estimate value and gradient. A comparison between these filters and a non-recursive median filter shows that the former is more efficient because a smaller size can be used.

Paper Details

Date Published: 21 November 1980
PDF: 5 pages
Proc. SPIE 0264, Applications of Digital Image Processing to Astronomy, (21 November 1980); doi: 10.1117/12.959793
Show Author Affiliations
Preben J. Grosbol, European Southern Observatory (Fed.Rep.of Germany)

Published in SPIE Proceedings Vol. 0264:
Applications of Digital Image Processing to Astronomy
Denis A. Elliot, Editor(s)

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