Al-Diri, Bashir and Hunter, Andrew
(2010)
Accurate methods for manually marking retinal vessel widths.
In: 7th European Symposium on Biomedical Engineering, 28-29 May 2010, Chaldiki, Greece.
Full content URL: http://www.medicon2010.org/7ESBME/p_paper-submissi...
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Item Type: | Conference or Workshop contribution (Paper) |
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Item Status: | Live Archive |
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Abstract
This paper compares two manual measurement
techniques for measuring retinal vessel segment widths: the
kick-points technique and the edge marking technique. An image
set of 164 clear, high-resolution segments was used. The
kick-points approach uses kick points marked by observers
along interpolated cross-sectional intensity profile graphs; the
edge marking method allows observers to nominate the edges on
a zoomed-up image, and interpolates edge positions. The edgemarking
method provides more precise measurements than the
kick-points method, but these are subject to more inter-observer
variability; we speculate that this result is due to differing observer
perceptions of the edge location.
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