%0 Journal Article %T Gradient-based Sharpness Function %A Maria Rudnaya %A Robert Mattheij %A Joseph Maubach %A Hennie ter Morsche %J Lecture Notes in Engineering and Computer Science %D 2011 %I Newswood and International Association of Engineers %U http://www.iaeng.org/publication/WCE2011/WCE2011_pp301-306.pdf