% fbanl2.m
% usage: Y = fbanl2(X,l,h,s) 
% Performs an s-stage logartihmic DWT transform on X. (analysis filter bank)
% It is assumed that l and h are smaller than #rows(X)/2^s and #cols(X)/2^s
% and that 2^s divides #rows(X) and #cols(X)
% time reversals of the masks l and h are used

function Y=fbanl2(X,l,h,s)
  [m,n] = size(X);
  Y = X;
  for  r = 0:(s-1)
     mr = m/2^r
     nr = n/2^r;
     Y(1:mr,1:nr) = hiloanl2(Y(1:mr,1:nr),l,h,l,h);
     end;