Recursive Filters to Remove Failures on Electronographic Plates

Preben J. Grosbol

doi:10.1117/12.959793

21 November 1980 Recursive Filters to Remove Failures on Electronographic Plates

Preben J. Grosbol

Proceedings Volume 0264, Applications of Digital Image Processing to Astronomy; (1980) https://doi.org/10.1117/12.959793
Event: 1981 Los Angeles Technical Symposium, 1980, Los Angeles, United States

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.

Citation Download Citation

Preben J. Grosbol "Recursive Filters to Remove Failures on Electronographic Plates", Proc. SPIE 0264, Applications of Digital Image Processing to Astronomy, (21 November 1980); https://doi.org/10.1117/12.959793

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available