function?T=loc_var（Iwssigma2）
%?private?function:?loc_var?（by?Guy?Gilboa）:
%?T=loc_var（Iwssigma2）
%?ws?-?window?size?（default?5）
%?sigma2?-?var?of?gaussian?（weighted?window）?（default?1）
%?calculate?local?variace?in?window?ws?x?ws?

if?~exist（‘ws‘）
???ws?=?11;????%?default?window?size
end
if?~exist（‘sigma2‘）
???sigma2?=?9;????%?default?var
end

%%?calculate?average?gradient?in?wsxws?window
[nynx]=size（I）;
T=zeros（size（I））;
hws=（ws-1）/2;??%?half?ws
%?Gaussian?decaying?weights
x=ones（ws1）*（-hws:hws）;?y=x‘;?
win=exp（-（x.^2+y.^2）/（2*sigma2））;??%?2D?gaussian?window
win=win/sum（sum（win））;??%?normalize?to?sum=1

%?mirror?bc
I?=?[fliplr（I（:1:hws））?I?fliplr（I（:end-hws+1:end））];?
I?=?[flipud（I（1:hws:））;?I;?flipud（I（end-hws+1:end:））];?

for?i=1+hws:ny+hws
	for?j=1+hws:nx+hws
??????Iw=I（i-hws:i+hwsj-hws:j+hws）;
??????T（i-hwsj-hws）?=?sum（sum（（（Iw-mean（mean（Iw）））.^2）.*win））;
	end?%?for?j
end?%?for?i

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-05-02?17:18??lee_filter\
?????目錄???????????0??2015-05-02?17:03??tv去噪\
?????文件?????????951??2007-03-15?20:35??tv去噪\loc_var.m
?????目錄???????????0??2015-05-02?17:03??偏微分去噪\
?????文件??????244208??2005-11-22?18:02??偏微分去噪\Canal.gif
?????文件?????????580??2005-12-13?11:31??偏微分去噪\SNR.m
?????文件????????3309??2006-01-10?14:40??偏微分去噪\TV_denoise.m
?????文件?????????550??2005-12-13?11:30??偏微分去噪\autoK.m
?????文件?????????913??2005-12-19?12:55??偏微分去噪\calc_lam.m
?????文件????????3232??2005-12-21?17:51??偏微分去噪\directional_diffusion.m
?????文件????????1265??2006-02-12?15:29??偏微分去噪\main.m
?????文件????????2981??2006-01-10?16:27??偏微分去噪\order4_diffusion.m
?????文件????????1308??2005-12-13?20:59??偏微分去噪\plot_edgestop.m
?????文件????????4013??2006-01-10?16:24??偏微分去噪\smooth_diffusion.m
?????目錄???????????0??2015-05-02?17:03??固定點(diǎn)迭代偏微分去噪\
?????文件????????4501??2006-06-01?12:36??固定點(diǎn)迭代偏微分去噪\Fixed_pt.m
?????目錄???????????0??2015-05-02?17:03??基于小波包圖像去噪\
?????目錄???????????0??2009-04-17?14:29??基于小波包圖像去噪\基于小波包圖像去噪\
?????目錄???????????0??2007-12-19?16:25??基于小波包圖像去噪\基于小波包圖像去噪\基于小波包圖像去噪\
?????文件????????1097??2009-04-17?14:30??基于小波包圖像去噪\基于小波包圖像去噪\基于小波包圖像去噪\test.m
?????文件?????????160??2007-04-19?16:31??基于小波包圖像去噪\基于小波包圖像去噪\基于小波包圖像去噪\二維小波包分解.m
?????文件?????????221??2007-04-20?12:15??基于小波包圖像去噪\基于小波包圖像去噪\基于小波包圖像去噪\二維小波包重構(gòu).m
?????目錄???????????0??2015-05-02?17:03??復(fù)數(shù)小波圖像去噪、增強(qiáng)\
?????目錄???????????0??2007-12-19?16:27??復(fù)數(shù)小波圖像去噪、增強(qiáng)\復(fù)數(shù)小波圖像去噪、增強(qiáng)\
?????文件?????????246??1997-08-14?13:48??復(fù)數(shù)小波圖像去噪、增強(qiáng)\復(fù)數(shù)小波圖像去噪、增強(qiáng)\BESIDE.M
?????文件?????????312??1998-06-09?12:09??復(fù)數(shù)小波圖像去噪、增強(qiáng)\復(fù)數(shù)小波圖像去噪、增強(qiáng)\UPM.M
?????文件?????????541??1995-03-20?22:11??復(fù)數(shù)小波圖像去噪、增強(qiáng)\復(fù)數(shù)小波圖像去噪、增強(qiáng)\cplot.m
?????文件?????????584??2001-12-10?00:09??復(fù)數(shù)小波圖像去噪、增強(qiáng)\復(fù)數(shù)小波圖像去噪、增強(qiáng)\deconv_sym.m
?????文件?????????864??2000-09-28?16:13??復(fù)數(shù)小波圖像去噪、增強(qiáng)\復(fù)數(shù)小波圖像去噪、增強(qiáng)\near_sym_b.mat
?????文件????????1868??1999-06-20?15:01??復(fù)數(shù)小波圖像去噪、增強(qiáng)\復(fù)數(shù)小波圖像去噪、增強(qiáng)\prforce.m
?????文件????????4939??2003-01-30?11:23??復(fù)數(shù)小波圖像去噪、增強(qiáng)\復(fù)數(shù)小波圖像去噪、增強(qiáng)\qshiftgen.m
............此處省略181個(gè)文件信息