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authorNick White <git@njw.name>2021-01-18 17:26:53 +0000
committerNick White <git@njw.name>2021-01-18 17:26:53 +0000
commit5cc4c65e5a144957b60b4965244016f01136b79c (patch)
tree38784956b582d7f02b7b797977430033a5890654 /content/posts/adaptive-binarisation
parent261e0d1c7cf0dfdd0304caa012f7f8b67c3592a9 (diff)
Change Sauvola link as old one is dead
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@@ -31,7 +31,7 @@ screwed up)
A popular algorithm for this adaptive binarisation technique was
described in a 2000 paper by J. Sauvola
-[Adaptive document image binarization](http://www.ee.oulu.fi/mvg/files/pdf/pdf_24.pdf).
+[Adaptive document image binarization](http://citeseerx.ist.psu.edu/viewdoc/download;?doi=10.1.1.98.880&rep=rep1&type=pdf).
The key part of the paper which is still used today is his modification
of an earlier algorithm for adaptive binarisation by Niblack (1986), to
add standard deviation to the calculation of a local threshold for