function?K=autoK（I）
%?自動估計梯度閾值K函數
%?用robust_statistic自動估計梯度閾值
%Rerf.?
%M.?J.?Black?G.?Sapiro?D.?H.?Marimont?and?D.?Hegger“Robust?Anisotropic?Diffusion”?IEEE?Trans.?Image
%Processing?vol.?7?no.?3?pp.?421–432?Mar.?1998.

%?I:input?gray?or?color?image

[rowcolnchannel]=size（I）;

K=0;
if?nchannel==1%gray?image
??????[gradxgrady]=gradient（I）;
%[gradxgrady]=grad2BySobel（I）;
????
????gradI=（gradx.^2+grady.^2）.^0.5;
????K=1.4826*mean（mean（abs（gradI-mean（mean（gradI）））））;
else%color?image
????for?i=1:3
????????[gradxgrady]=gradient（I（::i））;
????????gradI=（gradx.^2+grady.^2）.^0.5;
????????K=K+1.4826*mean（mean（abs（gradI-mean（mean（gradI）））））;
????end
????K=K/3;
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????4570??2013-06-30?21:38??ADF?code\Mymain_ADF_experiment_1.m
?????文件????????4642??2013-06-30?21:38??ADF?code\Mymain_ADF_experiment_2.m
?????文件????????4667??2013-06-30?21:38??ADF?code\Mymain_ADF_experiment_3.m
?????文件????????7880??2013-06-30?21:36??ADF?code\Mymain_ADF_experiment_4.m
?????文件????????4211??2013-06-30?21:36??ADF?code\Mymain_ADF_experiment_5.m
?????文件????????8048??2013-06-30?21:35??ADF?code\MyADF.m
?????文件????????1448??2013-06-30?21:20??ADF?code\readme.txt
?????文件?????????916??2003-09-11?21:17??ADF?code\BoundMirrorEnsure.m
?????文件?????????699??2003-09-11?21:17??ADF?code\BoundMirrorExpand.m
?????文件?????????488??2003-09-11?21:17??ADF?code\BoundMirrorShrink.m
?????文件?????????238??2006-05-12?20:44??ADF?code\Gaus_filter.m
?????文件?????????722??2009-04-21?19:05??ADF?code\autok.m
?????文件?????????500??1999-09-28?12:58??ADF?code\gaussianBlur.m
?????文件?????????255??1999-09-28?12:58??ADF?code\gaussianMask.m
?????文件???????17462??2009-07-20?02:56??ADF?code\image\U.bmp
?????文件???????17464??2009-03-20?15:35??ADF?code\image\cardiaCT2.bmp
?????文件???????49206??2009-11-30?18:09??ADF?code\image\clover0.4.bmp
?????文件???????33478??2009-08-24?16:47??ADF?code\image\conv3-150.bmp
?????文件???????23531??2013-06-23?17:40??ADF?code\image\cortex.png
?????文件???????17462??2009-07-20?19:53??ADF?code\image\room.bmp
?????文件?????????237??2006-05-12?19:59??ADF?code\imdisp.m
?????文件????????5583??2010-09-03?13:08??ADF?code\smooth_diffusion.m
?????文件????????1950??2009-07-19?15:51??ADF?code\snakedeform.m
?????文件?????????190??2003-09-11?21:17??ADF?code\snakeindex.m
?????文件?????????523??2007-12-23?21:59??ADF?code\snakeinit2.m
?????文件????????1766??2004-05-28?19:33??ADF?code\snakeinterp.m
?????文件?????????245??2006-05-12?19:13??ADF?code\xconv2.m
?????文件????????1307??2014-02-12?14:29??license.txt