function?y?=?backsamp（y）
%?BACKSAMP????Backsampling?the?subband?images?of?the?directional?filter?bank
%
%???y?=?backsamp（y）
%
%?Input?and?output?are?cell?vector?of?dyadic?length
%
%?This?function?is?called?at?the?end?of?the?DFBDEC?to?obtain?subband?images?
%?with?overall?sampling?as?diagonal?matrices
%
%?See?also:?DFBDEC

%?Number?of?decomposition?tree?levels
n?=?log2（length（y））;

if?（n?~=?round（n））?|?（n?????error（‘Input?must?be?a?cell?vector?of?dyadic?length‘）;
end

if?n?==?1
????%?One?level?the?decomposition?filterbank?shoud?be?Q1r
????%?Undo?the?last?resampling?（Q1r?=?R2?*?D1?*?R3）
????for?k?=?1:2
	y{k}?=?resamp（y{k}?4）;
	y{k}（:?1:2:end）?=?resamp（y{k}（:?1:2:end）?1）;
	y{k}（:?2:2:end）?=?resamp（y{k}（:?2:2:end）?1）;	
????end????
????
elseif?n?>?2????

?屬性????????????大小?????日期????時(shí)間???名稱(chēng)
-----------?---------??----------?-----??----
?????目錄???????????0??2012-10-11?14:18??fuse?by?contourlet\
?????文件???????66614??2008-04-28?14:05??fuse?by?contourlet\1826i.bmp
?????文件???????66614??2008-04-28?14:05??fuse?by?contourlet\1826v.bmp
?????文件???????13824??2011-09-18?23:59??fuse?by?contourlet\Thumbs.db
?????文件????????1119??2003-09-10?23:32??fuse?by?contourlet\backsamp.m
?????文件????????2223??2003-11-05?22:44??fuse?by?contourlet\dfbdec.m
?????文件????????1768??2003-11-05?23:54??fuse?by?contourlet\dfbdec_l.m
?????文件????????2012??2003-11-10?00:52??fuse?by?contourlet\dfbrec.m
?????文件????????1736??2003-11-06?00:18??fuse?by?contourlet\dfbrec_l.m
?????文件?????????755??2003-04-10?10:30??fuse?by?contourlet\dup.m
?????文件????????1103??2003-04-10?10:30??fuse?by?contourlet\efilter2.m
?????文件????????1861??2003-11-05?22:25??fuse?by?contourlet\extend2.m
?????文件????????1507??2003-11-06?10:41??fuse?by?contourlet\fbdec_l.m
?????文件????????2360??2003-04-10?10:30??fuse?by?contourlet\fbrec.m
?????文件????????1426??2003-11-06?00:23??fuse?by?contourlet\fbrec_l.m
?????文件?????????485??2003-04-10?10:30??fuse?by?contourlet\ffilters.m
?????文件?????????610??2012-01-12?19:20??fuse?by?contourlet\fusebycontourlet.asv
?????文件?????????610??2012-01-12?19:21??fuse?by?contourlet\fusebycontourlet.m
?????文件????????4800??2012-01-12?21:39??fuse?by?contourlet\fusecoeffs.asv
?????文件????????4800??2012-01-12?21:41??fuse?by?contourlet\fusecoeffs.m
?????文件???????16334??2012-01-12?19:43??fuse?by?contourlet\hs_err_pid224.log
?????文件?????????662??2003-11-05?08:17??fuse?by?contourlet\ldfilter.m
?????文件?????????722??2003-09-13?02:30??fuse?by?contourlet\lpdec.m
?????文件?????????935??2003-09-13?02:48??fuse?by?contourlet\lprec.m
?????文件????????2671??2003-11-11?10:29??fuse?by?contourlet\pdfbdec.m
?????文件????????1486??2003-11-06?10:41??fuse?by?contourlet\pdfbrec.m
?????文件????????1667??2003-11-06?10:44??fuse?by?contourlet\pfilters.m
?????文件????????1374??2003-11-10?12:05??fuse?by?contourlet\ppdec.m
?????文件????????1497??2003-11-10?12:05??fuse?by?contourlet\pprec.m
?????文件????????1868??2003-04-10?10:30??fuse?by?contourlet\pup.m
?????文件????????1490??2003-11-10?12:05??fuse?by?contourlet\qpdec.m
............此處省略9個(gè)文件信息