English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

This paper presents a novel digital interferometric method to demodulatePlacido fringe patterns. This is a synchronous method which uses acomputer-stored conic-wavefront as demodulating reference. Here we focus on theexperimental aspects to phase-demodulate Placido mires applied to cornealtopography. This synchronous method is applied to two topographic Placidoimages and their de-modulated corneal-slope deformation is estimated. Thisconic-interferometric method is highly robust against typical "noise" signalsin Placido topography such as: reflected eyelashes and iris structures. That isbecause the eyelashes and the iris structures are high frequency "noisy"signals corrupting the reflected Placido mire, so they are filtered-out by thismethod. Digital synchronous interferometry is here applied for the first timeto demodulate corneal topographic concentric-rings images (Patent pending atthe USPTO).

Digital interferometric demodulation of Placido mires applied to corneal topography