function?I=downSmpIm（IfiltS）

if（~exist（‘filtS‘‘var‘））
??filtS=1;
end
if?（filtS==2）
??filt=[14641]/16;
end
if?（filtS==1）
??filt=[121]/4;
end

for?i=1:size（I3）
??for?j=1:size（I4）
????I（::ij）=conv2（filtfilt‘I（::ij）‘same‘）;
??end
end

I=I（filtS+1:2:end-filtSfiltS+1:2:end-filtS::）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-12-21?14:47??matting\
?????文件??????278442??2006-04-20?17:19??matting\KNhair.bmp
?????文件??????278444??2006-04-20?17:19??matting\KNhair_m.bmp
?????文件????????2567??2006-04-21?21:06??matting\README
?????文件??????133866??2006-04-20?17:21??matting\dandelion_clipped.bmp
?????文件??????133868??2006-04-20?17:21??matting\dandelion_clipped_m.bmp
?????文件???????45682??2006-04-21?21:11??matting\dandelion_clipped_res_alpha.bmp
?????文件?????????300??2006-04-20?15:59??matting\downSmpIm.m
?????文件??????720054??2006-04-20?16:04??matting\fire.bmp
?????文件??????720056??2006-04-20?16:04??matting\fire_m.bmp
?????文件??????241078??2006-04-21?21:13??matting\fire_res_alpha.bmp
?????文件????????2146??2006-04-20?16:23??matting\getGMatByMask.m
?????文件????????1710??2006-04-20?17:14??matting\getLaplacian1.m
?????文件????????1192??2006-04-20?17:09??matting\getLinearCoeff.m
?????文件?????????137??2006-04-20?16:30??matting\imIndexToVect.m
?????文件??????338266??2006-04-20?17:31??matting\kid1.bmp
?????文件??????338240??2006-04-20?17:34??matting\kid1_m.bmp
?????文件??????114254??2006-04-21?21:17??matting\kid1_res_alpha.bmp
?????文件??????272538??2006-04-20?17:35??matting\kid2.bmp
?????文件??????272540??2006-04-20?17:35??matting\kid2_m.bmp
?????文件???????91906??2006-04-21?21:17??matting\kid2_res_alpha.bmp
?????文件??????720054??2006-04-20?17:15??matting\peacock.bmp
?????文件??????720056??2006-04-20?17:15??matting\peacock_m.bmp
?????文件??????241078??2006-04-21?21:12??matting\peacock_res_alpha.bmp
?????文件??????465974??2006-04-21?21:15??matting\rabbit.bmp
?????文件??????465974??2006-04-21?21:15??matting\rabbit_m.bmp
?????文件??????157598??2006-04-21?21:17??matting\rabbit_res_alpha.bmp
?????文件?????????751??2006-04-20?17:13??matting\runMatting.m
?????文件??????????93??2006-04-20?17:25??matting\runMatting_Dandelion.m
?????文件??????????98??2006-04-20?17:13??matting\runMatting_Fire.m
?????文件??????????67??2006-04-20?17:34??matting\runMatting_Hair.m
............此處省略17個文件信息