@article{ref1,
title="Optimising the legibility of symbol signs",
journal="Vision in vehicles",
year="1998",
author="Schieber, Frank",
volume="6",
number="",
pages="163-170",
abstract="Both the logic underlying the recursive blur technique for optimizing the legibility of symbol signs and the computer algorithms for implementing the technique are based upon 2-dimensional (2D) Fourier analysis. The use of 2D-Fourier analysis for the description of complex spatial structures (such as highway signs) is introduced in this paper. This framework is extended to show how 2D-Fourier techniques can be used to &quot;filter-out&quot; specific structural components from a sign stimulus and how this filtering approach has been employed to engineer highway signs with improved legibility.<p />",
language="",
issn="",
doi="",
url="http://dx.doi.org/"
}