FRAMETIGHT - Construct the canonical tight frame

Usage

Ft=frametight(F);

Description

Ft=frametight(F) returns the canonical tight frame of F.

The canonical tight frame can be used to get perfect reconstruction if it is used for both analysis and synthesis. This is demonstrated in the following example:

% Create a frame and its canonical tight
F=frame('dgt','hamming',32,64);
Ft=frametight(F);

% Compute the frame coefficients and test for perfect
% reconstruction
f=gspi;
c=frana(Ft,f);
r=frsyn(Ft,c);
norm(r(1:length(f))-f)