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

Author
Pino, A.; Pladellorens, J.
Type of activity
Presentation of work at congresses
Name of edition
V International Conference on Speckle Metrology
Date of publication
2012
Book of congress proceedings
Proceedings of SPIE - The International Society for Optical Engineering
First page
84131
DOI
https://doi.org/10.1117/12.978077 Open in new window
URL
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1358291 Open in new window
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 obtain from the image of the speckle through the inverse Fourier transform, we relate the values of the normalized covariance function. We compare...
Keywords
Arithmetic average, inverse Fourier transform, normalized covariance function, speckle, texture.
Group of research
CD6 - Centre for Sensors, Instruments and Systems Development
GREO - Optical Engineering Research Group

Participants