[IPOL announce] new article: Computing an Exact Gaussian Scale-Space
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Tue Feb 2 11:37:25 CET 2016
A new article is available in IPOL: http://www.ipol.im/pub/art/2016/117/
Ives Rey Otero, and Mauricio Delbracio,
Computing an Exact Gaussian Scale-Space,
Image Processing On Line, 6 (2016), pp. 8–26.
http://dx.doi.org/10.5201/ipol.2016.117
Abstract
Gaussian convolution is one of the most important algorithms in image
processing. The present work focuses on the computation of the Gaussian
scale-space, a family of increasingly blurred images, responsible, among
other things, for the scale-invariance of SIFT, a popular image matching
algorithm. We discuss and numerically analyze the precision of three
different alternatives for defining a discrete counterpart to the
continuous Gaussian operator. This study is focused on low blur levels,
that are crucial for the scale-space accuracy.
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