High-speed three-dimensional shape measurement for dynamic scenes using bi-frequency tripolar pulse-width-modulation fringe projection

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Real-time structured light profilometry: a review (2016, methodology): “687 Sinusoidal fringe patterns were obtained through regular binary defocusing [121] or by 688 modifying the binary patterns according to the optimal pulse width modulation technique 689 [77,122].”
Flood Susceptibility Assessment Using Novel Ensemble of Hyperpipes and Support Vector Regression Algorithms (2021, background): “Several research works have been done on FS analysis by using various factors like geological (tectonic), climatological, hydrological, geomorphological, and human interventions [19].”
High-speed 3D shape measurement with structured light methods: A review (2018, methodology): “…optimizing binary dithered patterns; Silva et al. [112] proposed the colored PWM technique to reduce the number of images to be three; Zuo et al. [113] only used 2 binary patterns and employed the triangular pulse width modulation (TPWM) technique; and Wang et al. [114] developed optimization…”