<?xml version="1.0"?>
<dblp>
<article key="journals/pr/Xia01" mdate="2004-02-20">
<author>Franck Xia</author>
<title>Normal vector and winding number in 2D digital images with application for hole detection.</title>
<pages>2253-2258</pages>
<year>2001</year>
<volume>34</volume>
<journal>Pattern Recognition</journal>
<number>11</number>
<ee>http://dx.doi.org/10.1016/S0031-3203(01)00036-X</ee>
<url>db/journals/pr/pr34.html#Xia01</url>
</article>
</dblp>
