A fuzzy logic-based algorithm for cosmic-ray hit rejection from single images

• Published in: Astronomische Nachrichten Vol. 326; no. 6; pp. 428 - 431
• Main Author: Shamir, L.
• Format: Journal Article
• Language: English
• Published: Berlin WILEY-VCH Verlag 01.07.2005; WILEY‐VCH Verlag
• Subjects: methods: data analysis; techniques: image processing
• ISSN: 0004-6337; 1521-3994
• DOI: 10.1002/asna.200510364

An algorithm for cosmic‐ray rejection from single images is presented. The algorithm is based on modeling human perception using fuzzy logic. The proposed algorithm is specifically designed to reject multiple‐pixel cosmic ray hits that are larger than some of the point spread functions of the true astronomical sources. Experiments show that the algorithm can accurately reject ∼97.5% of the cosmic rays hits, while mistakenly rejecting 0.02% of the true astronomical sources. The major advantage of the presented algorithm is its computational efficiency. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)