www.pudn.com > snake.rar > gaussianBlur.m

function GI = gaussianBlur(I,s) 
% GAUSSIANBLUR blur the image with a gaussian kernel 
%     GI = gaussianBlur(I,s)  
%     I is the image, s is the standard deviation of the gaussian 
%     kernel, and GI is the gaussian blurred image. 
 
%    Chenyang Xu and Jerry L. Prince 6/17/97 
%    Copyright (c) 1996-97 by Chenyang Xu and Jerry L. Prince 
 
M = gaussianMask(1,s); 
M = M/sum(sum(M));   % normalize the gaussian mask so that the sum is 
                     % equal to 1 
GI = xconv2(I,M);