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FRAMEDUAL - Construct the canonical dual frame

Usage

Fd=framedual(F);

Description

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)