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21 November 1980 Recursive Filters to Remove Failures on Electronographic Plates
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Proceedings Volume 0264, Applications of Digital Image Processing to Astronomy; (1980)
Event: 1981 Los Angeles Technical Symposium, 1980, Los Angeles, United States
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.
© (1980) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Preben J. Grosbol "Recursive Filters to Remove Failures on Electronographic Plates", Proc. SPIE 0264, Applications of Digital Image Processing to Astronomy, (21 November 1980);


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