62 citations · 317 across the 21 of their papers we have counts for
4 papers · 2 filters
Digital interferometric demodulation of Placido mires applied to corneal topography
Manuel Servin
This paper presents a novel digital interferometric method to demodulate Placido fringe patterns. This is a synchronous method which uses a computer-stored conic-wavefront as demod…
Synchronous phase-demodulation of concentric-rings Placido mires in corneal topography and wavefront aberrometry (theoretical considerations)
Manuel Servin
This paper presents a digital interferometric method to demodulate Placido fringe patterns. This method uses a computer-stored conic-wavefront as reference carrier. Even though, Pl…
Synchronous phase-demodulation of high spatial frequency, concentric-rings, Placido fringe patterns
Manuel Servin
Here a synchronous phase-demodulation method for high spatial frequency (HSF), concentric-rings Placido fringe pattern is proposed. The earliest use of this concentric-rings patter…
Linear analysis of the 4-step Carré phase shifting algorithm: spectrum, signal-to-noise ratio, and harmonics response
Manuel Servin, Adonai Gonzalez
We analyze the nonlinear Carré 4-steps algorithm including its frequency response, signal-to-noise ratio, and harmonics rejection using linear systems theory. At first sight the pr…