Measurement of the roughness surface of the specials papers using the normalized autocorrelation function of the fields of the texture of speckle pattern

Abdiel O. Pino; Josep Pladellorens

doi:10.1117/12.2027555

18 November 2013 Measurement of the roughness surface of the specials papers using the normalized autocorrelation function of the fields of the texture of speckle pattern

Abdiel O. Pino, Josep Pladellorens

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Proceedings Volume 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications; 87851G (2013) https://doi.org/10.1117/12.2027555
Event: 8th Ibero American Optics Meeting/11th Latin American Meeting on Optics, Lasers, and Applications, 2013, Porto, Portugal

Abstract

We present a new method of measure of the roughness based on the analysis of the texture of speckle pattern on the surface. Images of speckle pattern over the surface are captured by means of a simple configuration using a laser, beam expander, and a camera charge coupled device (CCD). Using the properties of the normalized covariance function that we obtained from the image of the speckle through the inverse Fourier transform, we relate the values of the normalized covariance function. We compare the results obtained with a confocal microscope and co-occurrence matrices method. This method can be considered as a noncontact surface profiling method that is easy to implement and can be used during the manufacturing process.

Citation Download Citation

Abdiel O. Pino and Josep Pladellorens "Measurement of the roughness surface of the specials papers using the normalized autocorrelation function of the fields of the texture of speckle pattern", Proc. SPIE 8785, 8th Iberoamerican Optics Meeting and 11th Latin American Meeting on Optics, Lasers, and Applications, 87851G (18 November 2013); https://doi.org/10.1117/12.2027555

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KEYWORDS

Speckle pattern

Surface roughness

Confocal microscopy

Speckle

Microscopes

Radium

Scattering

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