Recognition of paper samples by correlation of their speckle patterns

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dc.creatorvan Beijnum, F.
dc.creatorvan Putten, E. G.
dc.creatorvan der Molen, K. L.
dc.creatorMosk, A. P.
dc.date2006-10-12
dc.date2006-10-17
dc.date.accessioned2026-07-07T07:29:54Z
dc.date.available2026-07-07T07:29:54Z
dc.descriptionBuchanan et al. [Nature 436, p. 475 (2005)] have shown that it is possible to recognize paper samples via their speckle pattern by using a line-shaped laser focus, four photo detectors and a scanning mechanism. In this report recognition of five out of ten paper samples is presented. The sample was illuminated by a 2.62 +- 0.02 mm circular spot and the reflected light was measured by a static CCD. We have formulated a criterion for recognition that limits the probability of false recognition to 0.1 % for the experiment with ten samples. We obtained results that show that the probability of false recognition will be negligible for a large amount of samples. The properties of speckle originating from a line and a spot illumination source have been compared to see whether the use of a line results in major advantages for the recognition of samples.
dc.descriptionReport of a student practicum. 21 pages pdf, with color figures. v2: Corrected some font errors
dc.identifierhttps://arxiv.org/abs/physics/0610089
dc.identifierhttp://arxiv.org/abs/physics/0610089
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/118289
dc.subjectPhysics Education
dc.subjectOptics
dc.titleRecognition of paper samples by correlation of their speckle patterns
dc.typetext

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