Rapid deformation analysis in digital holographic interferometry using graphics processing unit accelerated Wigner–Ville distribution

Vishnoi, Ankur; Gannavarpu, Rajshekhar

doi:10.1364/ao.58.004420

Cited by 24 publications

(3 citation statements)

References 22 publications

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“…Rapid measurement of displacement derivatives of a deformed object is a challenging task. Recently, this problem has been addressed by the application of an efficient GPUbased Wigner-Ville distribution method [175]. The applicability of GPU-assisted diffraction phase microscopy has also been demonstrated for dynamic deformation testing in terms of reliability and computational efficiency [176].…”

Section: High-speed Fringe Analysismentioning

confidence: 99%

Development of surface reconstruction algorithms for optical interferometric measurement

2020

Front. Mech. Eng.

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Optical interferometry is a powerful tool for measuring and characterizing areal surface topography in precision manufacturing. A variety of instruments based on optical interferometry have been developed to meet the measurement needs in various applications, but the existing techniques are simply not enough to meet the ever-increasing requirements in terms of accuracy, speed, robustness, and dynamic range, especially in on-line or on-machine conditions. This paper provides an in-depth perspective of surface topography reconstruction for optical interferometric measurements. Principles, configurations, and applications of typical optical interferometers with different capabilities and limitations are presented. Theoretical background and recent advances of fringe analysis algorithms, including coherence peak sensing and phase-shifting algorithm, are summarized. The new developments in measurement accuracy and repeatability, noise resistance, self-calibration ability, and computational efficiency are discussed. This paper also presents the new challenges that optical interferometry techniques are facing in surface topography measurement. To address these challenges, advanced techniques in image stitching, on-machine measurement, intelligent sampling, parallel computing, and deep learning are explored to improve the functional performance of optical interferometry in future manufacturing metrology.

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Section: High-speed Fringe Analysismentioning

confidence: 99%

Development of surface reconstruction algorithms for optical interferometric measurement

2020

Front. Mech. Eng.

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“…Accordingly, in this paper, we propose root multiple signal classification method for robust phase retrieval and show a highly efficient implementation using graphics processing unit based computing framework. In recent years, there is immense interest in the domain of fringe analysis for investigating methods with noise resistant capabilities [29][30][31][32] and high performance operations [33][34][35][36], and our work is a step in this direction. The outline of the paper is as follows.…”

Section: Introductionmentioning

confidence: 99%

Fast and robust method for flow analysis using GPU assisted diffractive optical element based background oriented schlieren (BOS)

Ramaiah

Ajithaprasad

Gannavarpu

et al. 2020

Optics and Lasers in Engineering

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The paper introduces a method for studying flow dynamics using diffractive optical element based background-oriented schlieren (BOS). Our method relies on fringe demodulation using root multiple signal classification technique which provides high robustness against noise. Further, a graphics processing unit (GPU) based implementation is proposed which offers significant improvement in computational efficiency, and thus enables high speed analysis of flows. The performance of the method is demonstrated via numerical simulations and the practical applicability is also shown by analyzing a diffusion phenomenon in liquids by BOS.

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“…光测应变法包括全息/数字全息干涉、光弹/全息光弹、云纹 /云纹干涉/电镜云纹、散斑干涉、数字图像相关以及电子计算机断层扫描(computed tomography, CT)等 [31,32] . 全息/数字全息干涉法 [33,34] 利用全息再现物光波的能力, 将构件变形前后的两个状态同时再现, 并通过光波的干涉得到二者之间的变化量. 光弹/全息光弹法 [35,36] 主要基于材料的双折射效应, 即原本自然状态下的各向同性材料, 在有应力下表现出暂时的光学双折射现象.…”

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Film strain measurement method of flexible display modules based on mechanical theory

Di¹,

Fan²,

Liao³

et al. 2022

Sci. Sin.-Phys. Mech. Astron.

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Rapid deformation analysis in digital holographic interferometry using graphics processing unit accelerated Wigner–Ville distribution

Cited by 24 publications

References 22 publications

Development of surface reconstruction algorithms for optical interferometric measurement

Development of surface reconstruction algorithms for optical interferometric measurement

Fast and robust method for flow analysis using GPU assisted diffractive optical element based background oriented schlieren (BOS)

Film strain measurement method of flexible display modules based on mechanical theory

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