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samur piere

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10 Aug 2009 Gradient using first order derivative of Gaussian Output the gradient image of a grayscale image Author: Guanglei Xiong

can you mention the mathematical basis for kernel size and normalization steps. thx.

epsilon = 1e-2;
halfsize = ceil( sigma * sqrt(-2*log(sqrt(2*pi)*sigma*epsilon)) );

hx = hx/sqrt(sum(sum( abs(hx).*abs(hx) )));
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filtering, gradient gaussian
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09 Sep 2005 Screenshot Gradient using first order derivative of Gaussian Output the gradient image of a grayscale image Author: Guanglei Xiong filtering, gradient gaussian, fod, first order derivativ..., image proc, gradient method 85 12
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