Fd=framedual(F);
Fd=framedual(F) returns the canonical dual frame of F.
The canonical dual frame can be used to get perfect reconstruction as in the following example:
% Create a frame and its canonical dual F=frame('dgt','hamming',32,64); Fd=framedual(F); % Compute the frame coefficients and test for perfect % reconstruction f=gspi; c=frana(F,f); r=frsyn(Fd,c); norm(r(1:length(f))-f)