3 papers
eess.SP2019
High-precision temporal interferometry from nonlinearly-spaced phase-shifted interferograms through spatial-filtering
Manuel Servin, Moises Padilla, Guillermo Garnica +1
We present a high-precision temporal-spatial phase-demodulation algorithm for phase-shifting interferometry (PSI) affected by random/systematic phase-stepping errors. Laser interfe…
eess.SP2019
Fourier spectra for nonuniform phase-shifting algorithms based on principal component analysis
Manuel Servin, Moises Padilla, Guillermo Garnica +1
We develop an error-free, nonuniform phase-stepping algorithm (nPSA) based on principal component analysis (PCA). PCA-based algorithms typically give phase-demodulation errors when…
eess.SP2018
Design of non-uniformly spaced phase-stepped algorithms using their frequency transfer function
Manuel Servin, Moises Padilla, Guillermo Garnica +1
Here we show how to design phase-shifting algorithms (PSAs) for nonuniform phase-shifted fringe patterns using their frequency transfer function (FTF). Assuming that the nonuniform…