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

Autor
Pino, A.; Pladellorens, J.
Tipus d'activitat
Presentació treball a congrés
Nom de l'edició
V International Conference on Speckle Metrology
Any de l'edició
2012
Llibre d'actes
Proceedings of SPIE - The International Society for Optical Engineering
Pàgina inicial
84131
DOI
https://doi.org/10.1117/12.978077 Obrir en finestra nova
URL
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1358291 Obrir en finestra nova
Resum
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...
Paraules clau
Arithmetic average, inverse Fourier transform, normalized covariance function, speckle, texture.
Grup de recerca
CD6 - Centre de Desenvolupament de Sensors, Instrumentació i Sistemes
GREO - Grup de Recerca en Enginyeria Òptica

Participants