The image ray transform for structural feature detection

Cummings, Alastair H., Nixon, Mark S. and Carter, John N. (2011) The image ray transform for structural feature detection. Pattern Recognition Letters, 32, (15), 2053-2060. (doi:10.1016/j.patrec.2011.08.020).


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The use of analogies to physical phenomena is an exciting paradigm in computer vision that allows unorthodox approaches to feature extraction, creating new techniques with unique properties. A technique known as the ``image ray transform'' has been developed based upon an analogy to the propagation of light as rays. The transform analogises an image to a set of glass blocks with refractive index linked to pixel properties and then casts a large number of rays through the image. The course of these rays is accumulated into an output image. The technique can successfully extract tubular and circular features and we show successful circle detection, ear biometrics and retinal vessel extraction. The transform has also been extended through the use of multiple rays arranged as a beam to increase robustness to noise, and we show quantitative results for fully automatic ear recognition, achieving 95.2% rank one recognition across 63 subjects.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/j.patrec.2011.08.020
ISSNs: 0167-8655 (print)
Keywords: vision, feature extraction, circle detection, biometrics, medical imaging
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
R Medicine > R Medicine (General)
Divisions : Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Southampton Wireless Group
ePrint ID: 272778
Accepted Date and Publication Date:
1 November 2011Published
10 September 2011Made publicly available
Date Deposited: 16 Sep 2011 09:57
Last Modified: 31 Mar 2016 14:22
Further Information:Google Scholar

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