Phase retrieval with unknown sampling factors via the two-dimensional chirp z-transform.
We derive the analytic gradient of a phase retrieval error metric with respect to the sampling factor or the f-number that produced the measured point-spread function. This allows us to efficiently optimize over the sampling factor, thereby improving the accuracy of the phase estimate. Computer simulation results show its effectiveness.
Alden S
AS
Jurling
James R
JR
Fienup