function?[lo?hi]?=?afb2D（x?af1?af2）

%?2D?Analysis?Filter?Bank
%
%?USAGE:
%???[lo?hi]?=?afb2D（x?af1?af2）;
%?INPUT:
%???x?-?N?by?M?matrix
%???????1）?M?N?are?both?even
%???????2）?M?>=?2*length（af1）
%???????3）?N?>=?2*length（af2）
%???af1?-?analysis?filters?for?columns
%???af2?-?analysis?filters?for?rows
%?OUTPUT:
%????lo?-?lowpass?subband
%????hi{1}?-?‘lohi‘?subband
%????hi{2}?-?‘hilo‘?subband
%????hi{3}?-?‘hihi‘?subband
%?EXAMPLE:
%???x?=?rand（3264）;
%???[af?sf]?=?farras;
%???[lo?hi]?=?afb2D（x?af?af）;
%???y?=?sfb2D（lo?hi?sf?sf）;
%???err?=?x?-?y;
%???max（max（abs（err）））
%
%?WAVELET?SOFTWARE?AT?POLYTECHNIC?UNIVERSITY?BROOKLYN?NY
%?http://taco.poly.edu/WaveletSoftware/

if?nargin????af2?=?af1;
end

%?filter?along?columns
[L?H]?=?afb2D_A（x?af1?1）;

%?filter?along?rows
[lo?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1243??2003-07-17?20:31??FSfarras.m
?????文件????????1272??2011-07-03?18:19??VPSNdemo.m
?????文件?????????870??2003-07-17?20:31??afb2D.m
?????文件?????????957??2011-05-19?21:05??afb2D_A.m
?????文件????????1243??2003-07-17?20:31??cplxdual2D.m
?????文件?????????365??2003-07-17?20:31??cshift2D.m
?????文件????????1519??2003-07-17?20:31??dualfilt1.m
?????文件?????????928??2003-07-17?20:31??icplxdual2D.m
?????文件????????1330??2011-07-06?02:16??license.txt
?????文件?????????135??2003-07-17?20:31??pm.m
?????文件???????11855??2011-07-03?18:21??saras91.jpg
?????文件????????9651??2011-07-03?18:21??saras92.jpg
?????文件?????????570??2003-07-17?20:31??sfb2D.m
?????文件?????????514??2003-07-17?20:31??sfb2D_A.m