Sampling moiré as a special windowed Fourier ridges algorithm in demodulation of carrier fringe patterns

Qian Kemao; Nimisha Agarwal; Shien Ri; Qinghua Wang

doi:10.1117/1.OE.57.10.100503

22 October 2018 Sampling moiré as a special windowed Fourier ridges algorithm in demodulation of carrier fringe patterns

Qian Kemao, Nimisha Agarwal, Shien Ri, Qinghua Wang

Author Affiliations +

Optical Engineering, Vol. 57, Issue 10, 100503 (October 2018). https://doi.org/10.1117/1.OE.57.10.100503

Abstract

In recent times, both the windowed Fourier ridges (WFR) and sampling moiré (SM) algorithms have been extensively used due to their high effectiveness in the demodulation of carrier fringe patterns. As they are developed independently, they are mostly recognized as completely different techniques, but we theoretically prove that SM is a special WFR with a specific window shape and a preset local frequency. This unifies the two different algorithms and enhances the understanding of their theoretical aspects, which helps to simplify the selection of these algorithms in real applications.

Citation Download Citation

Qian Kemao, Nimisha Agarwal, Shien Ri, and Qinghua Wang "Sampling moiré as a special windowed Fourier ridges algorithm in demodulation of carrier fringe patterns," Optical Engineering 57(10), 100503 (22 October 2018). https://doi.org/10.1117/1.OE.57.10.100503

Received: 17 August 2018; Accepted: 3 October 2018; Published: 22 October 2018

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