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10 September 2009 Measure of roughness of paper using speckle
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Roughness of a paper surface is particularly important in paper and board destined to be printed. Surfaces are often coated and the amount of coating and method of application used depends on the roughness of the base paper. We present a method of measure of the roughness of the paper based in the analysis of speckle pattern on the surface. Images are captured by means of a simple configuration using a laser and a camera CCD. Then, we apply digital image processing using the co-occurrence matrix, so this method can be considered as a non-contact surface profiling method, that can be used online.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Abdiel Pino and Josep Pladellorens "Measure of roughness of paper using speckle", Proc. SPIE 7432, Optical Inspection and Metrology for Non-Optics Industries, 74320E (10 September 2009);

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