o=frameoperator(F, f);
F | frame |
f | input vector |
h=frameoperator(F,f) applies the frame operator associated with the frame F to the input f.
If the frame F is a tight frame, then h equals f up to the constant \(\frac{1}{A}\) where \(A\) is the lower frame bound of F. If the frame F is an orthonormal basis, or more general a Parseval frame, then h equals f.