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Optical Engineering • Open Access

Roughness measurement of paper using speckle
Author(s): Abdiel O. Pino; Josep Pladellorens Mallofre; Jesús Caum Aregay; Oriol Cusola

Paper Abstract

We present a method of measure of the roughness of the paper based on the analysis of a speckle pattern on the surface. Images of speckle over the surface of paper are captured by means of a simple configuration using a laser, beam expander, and a camera charge-coupled device (CCD). Then we use the normalized covariance function of the fields, leaving the surface to find the roughness. We compare the results obtained with the results obtained with a confocal microscope and the Bendtsen method that is a standard of the paper industry. This method can be considered as a noncontact surface profiling method that can be used online.

Paper Details

Date Published: 1 September 2011
PDF: 6 pages
Opt. Eng. 50(9) 093605 doi: 10.1117/1.3625418
Published in: Optical Engineering Volume 50, Issue 9
Show Author Affiliations
Abdiel O. Pino, Univ. Politècnica de Catalunya (Spain)
Josep Pladellorens Mallofre, Univ. Politècnica de Catalunya (Spain)
Jesús Caum Aregay, Univ. Politècnica de Catalunya (Spain)
Oriol Cusola, Univ. Politècnica de Catalunya (Spain)


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