function?ln=localnormalize（IMsigma1sigma2）
%LOCALNORMALIZE?A?local?normalization?algorithm?that?uniformizes?the?local
%mean?and?variance?of?an?image.
%??ln=localnormalize（IMsigma1sigma2）?outputs?local?normalization?effect?of?
%??image?IM?using?local?mean?and?standard?deviation?estimated?by?Gaussian
%??kernel?with?sigma1?and?sigma2?respectively.
%
%??Contributed?by?Guanglei?Xiong?（xgl99@mails.tsinghua.edu.cn）
%??at?Tsinghua?University?Beijing?China.
epsilon=1e-1;
halfsize1=ceil（-norminv（epsilon/20sigma1））;
size1=2*halfsize1+1;
halfsize2=ceil（-norminv（epsilon/20sigma2））;
size2=2*halfsize2+1;
gaussian1=fspecial（‘gaussian‘size1sigma1）;
gaussian2=fspecial（‘gaussian‘size2sigma2）;
num=IM-imfilter（IMgaussian1）;
den=sqrt（imfilter（num.^2gaussian2））;
ln=num./den;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????436??2005-08-17?12:16??README.txt
?????文件?????????152??2005-08-17?12:06??testlocalnormalize.m
?????文件?????????796??2005-08-17?12:16??localnormalize.m