Accuracy concerns in digital speckle photography combined with Fresnel digital holographic interferometry

Zhao, Yuchen; Zemmamouche, Redouane; Vandenrijt, Jean-François; Georges, Marc

doi:10.1016/j.optlaseng.2017.09.011

Cited by 12 publications

(3 citation statements)

References 14 publications

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“…In the DSPI technology, the noise will lead to a low peak signal-to-noise ratio (PSNR) and severely influences the subsequent accuracy [17,19]. During the speckle interference experiment, because of the random factors influence, a large amount of noise will be occurred.…”

Section: Methodsmentioning

confidence: 99%

“…[13,14,15,16]. Among these measurement methods, DH has been heralded as a new era of whole-field deformation analyses in a microscopic level [16,17,18], however, DH is susceptible to changes in the external environment, such as vibration, and air disturbance [19,20]. The DSCM is suited for samples with a planar surface and not any curved surface, which will cause a significant error or measurement deviation [21,22].…”

Section: Introductionmentioning

confidence: 99%

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A Strain Distribution Sensing System for Bone-Implant Interfaces Based on Digital Speckle Pattern Interferometry

Zhong

Yang

et al. 2019

Sensors

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This paper aims to provide an effective measurement method for the distribution of deformations and strains focusing on the response to external loading of bone-implant interfaces. To achieve this target, a novel speckle interference imaging method is proposed by introducing phosphate buffer saline medium, in which the samples were completely placed into a phosphate buffer saline solution medium to stable the water molecules. The stability of interferometry imaging is analyzed by using the concepts of co-occurrence matrix and moment of inertia. A series of experiments to measure load-driven deformation and strain in the bone-implant interface was carried out, and the experiments results were analyzed and discussed. It shows that the proposed method is feasible and effective for the no-contact strain measurements of biomaterials in a physiological condition. The proposed strain distribution sensing system will contribute to evaluating computational simulations and improving selection of implant designs and materials.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Strain Distribution Sensing System for Bone-Implant Interfaces Based on Digital Speckle Pattern Interferometry

Zhong

Yang

et al. 2019

Sensors

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show abstract

“…By studying the space-time cross correlation function in the observation plane, the statistical properties of the speckles can be usually examined. In addition to its fundamental relevance, the 3D correlation characteristics of the speckles are important for several fields of speckle metrology, such as speckle holography [8], speckle interferometry [9] and speckle photography [10]. More recently, it also turned out to be a relevant issue in novel optical imaging techniques such as dynamic speckle illumination microscopy [11] and thermal ghost imaging [12].…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional correlation of speckles in deep Fresnel region: extracting the roughness exponent of random surface

et al. 2019

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We provide a detailed analysis of the three-dimensional cross correlation properties of speckle patterns in the deep Fresnel region scattered by random surface. Basing on Kirchhoff approximation, we first derive the quantitative relationship between the longitudinal correlation function and the fractal characteristics of random surface. A novel measuring method is proposed for extracting the roughness exponent of random surface from the longitudinal correlation function of speckles. In experiment, the speckle patterns deviating different distance from the object plane are acquired by a microscopic imaging system. The longitudinal correlation function of the speckles descends with the increase of deviating distance in the form of negative power law. By calculating the Fourier transform of the longitudinal correlation function, we obtain the roughness exponent of random surface by making linear fitting in the large spectrum region. The extracted results are in good agreement with those measured by an atomic force microscopic, which indicate our method has a satisfying accuracy.

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Study on Roof Deformation and Failure Law of Close Distance Coal Seams Mining Based on Digital Image Correlation

Yang,

Li,

Yue

et al. 2024

Exp Tech

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Accuracy concerns in digital speckle photography combined with Fresnel digital holographic interferometry

Cited by 12 publications

References 14 publications

A Strain Distribution Sensing System for Bone-Implant Interfaces Based on Digital Speckle Pattern Interferometry

A Strain Distribution Sensing System for Bone-Implant Interfaces Based on Digital Speckle Pattern Interferometry

Three-dimensional correlation of speckles in deep Fresnel region: extracting the roughness exponent of random surface

Study on Roof Deformation and Failure Law of Close Distance Coal Seams Mining Based on Digital Image Correlation

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