Journal ArticleDOI
Surface-roughness measurement based on the intensity correlation function of scattered light under speckle-pattern illumination.
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TLDR
The roughness dependence of the intensity autocorrelation function is studied and utilized to characterize typical engineering surfaces with anisotropic roughness to show that an in-process surface inspection can be achieved by this method.Abstract:
The statistical properties of speckle patterns generated from a rough surface under a fully developed static speckle-pattern illumination are examined. The roughness dependence of the intensity autocorrelation function is studied and utilized to characterize typical engineering surfaces with anisotropic roughness. The speckle patterns under investigation are recorded by use of a CCD technique and are then analyzed by digital image processing algorithms to obtain a parameter that describes the surface roughness. It is shown that an in-process surface inspection can be achieved by this method.read more
Citations
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Journal ArticleDOI
The Design and Manufacture of Biomedical Surfaces
Jeremy J. Ramsden,D.M. Allen,David J. Stephenson,Jeffrey R. Alcock,G.N. Peggs,G. D. Fuller,Gert Goch +6 more
TL;DR: The metrology of relevant physical and chemical aspects of surfaces is considered, which includes the adsorption of biomacromolecules, which is pivotal for biocompatibility.
Journal ArticleDOI
Grinding surface roughness measurement based on the co-occurrence matrix of speckle pattern texture.
TL;DR: The experimental results show that the surface roughness contained in the surface speckle pattern texture images has a good monotonic relationship with their energy feature of the gray-level co-occurrence matrices.
Book ChapterDOI
Structural Dynamics of Materials Probed by X-Ray Photon Correlation Spectroscopy
TL;DR: In this paper, the authors discuss coherent X-ray scattering, photon statistics of speckle patterns, and Xray photon correlation spectroscopy (XPCS) for nonequilibrium and heterogeneous dynamics.
Journal ArticleDOI
Surface roughness measurement by speckle contrast under the illumination of light with arbitrary spectral profile
Lioudmila Tchvialeva,Igor Markhvida,Haishan Zeng,Haishan Zeng,David I. McLean,Harvey Lui,Harvey Lui,Tim K. Lee,Tim K. Lee,Tim K. Lee +9 more
TL;DR: In this article, the authors extended the theory to arbitrary spectral profile by formulating speckle contrast as a function of spectral profile, surface roughness, and the geometry of specckle formation.
Journal ArticleDOI
Absolute measurement of roughness and lateral-correlation length of random surfaces by use of the simplified model of image-speckle contrast
TL;DR: A method of image-speckle contrast for the nonprecalibration measurement of the root-mean-square roughness and the lateral-correlation length of random surfaces with Gaussian correlation is presented.
References
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Journal ArticleDOI
Propagation parameters of gaussian Schell-model beams
Ari T. Friberg,Ronald J. Sudol +1 more
TL;DR: In this paper, the propagation of partially coherent light beams generated by gaussian Schell-model sources is characterized by two parameters that are analogous to the beam radius and the radius of wavefront curvature of fully coherent gaussian laser beams.
Journal ArticleDOI
Optical techniques for on-line measurement of surface topography
T.V. Vorburger,E C. Teague +1 more
TL;DR: In this article, the state-of-the-art in a number of optical techniques including specular reflectance, total integrated scatter, diffuseness, angular scattering distributions, speckle, ellipsometry, and interferometry are reviewed.
Journal ArticleDOI
Second-order Statistics of Light Diffracted from Gaussian, Rough Surfaces with Applications to the Roughness Dependence of Speckles
TL;DR: In this paper, the second-order statistics of light diffracted from gaussian rough surfaces are given by a locally stationary degree of coherence of scattered amplitudes in the reciprocal object space.
Journal ArticleDOI
Speckle statistics of doubly scattered light
TL;DR: In this paper, the statistical properties of light that has been scattered twice are studied in theory, and it is found that the probability densities of the doubly scattered light amplitude and intensity are approximately K distributions, which imply stronger fluctuations than Gaussian light.
Journal ArticleDOI
Surface-roughness dependence of the intensity correlation function under speckle-pattern illumination
TL;DR: The surface roughness dependence of the intensity correlation function of the speckle pattern, produced in the Fresnel region with fully developed specckle-pattern illumination, has been theoretically investigated and has been discussed in this paper.
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