Marshall, S., Fletcher, L. and Hough, K. (2006) Optimal filtering of solar images using soft morphological processing techniques. Astronomy and Astrophysics, 457(2), pp. 729-736. (doi: 10.1051/0004-6361:20064852)
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Publisher's URL: http://dx.doi.org/10.1051/0004-6361:20064852
Abstract
<p><b>Context:</b> CCD images obtained by space-based astronomy and solar physics are frequently spoiled by galactic and solar cosmic rays, and particles in the Earth's radiation belt, which produces an overlaid, often saturated, speckle.</p> <p><b>Aims:</b> We describe the development and application of a new image-processing technique for the removal of this noise source, and apply it to SOHO/LASCO coronagraph images. Methods.We employ soft morphological filters, a branch of non-linear image processing originating from the field of mathematical morphology, which are particularly effective for noise removal.</p> <p><b>Results:</b> The soft morphological filters result in a significant improvement in image quality, and perform significantly better than other currently existing methods based on frame comparison, thresholding, or simple morphologies.</p> <p><b>Conclusions:</b> This is a promising and adaptable technique that should be extendable to other space-based solar and astronomy datasets.</p>
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Fletcher, Professor Lyndsay |
Authors: | Marshall, S., Fletcher, L., and Hough, K. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Astronomy and Astrophysics |
Publisher: | EDP Sciences |
ISSN: | 0004-6361 |
ISSN (Online): | 1432-0746 |
Copyright Holders: | Copyright © 2006 EDP Sciences |
First Published: | First published in Astronomy and Astrophysics 457(2):729-736 |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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