dorsal/arxiv
View SchemaRecognition of paper samples by correlation of their speckle patterns
| Authors | F. van Beijnum, E. G. van Putten, K. L. van der Molen, A. P. Mosk |
|---|---|
| Categories | |
| ArXiv ID | physics/0610089 |
| URL | https://arxiv.org/abs/physics/0610089 |
Abstract
Buchanan 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.
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"abstract": "Buchanan et al. [Nature 436, p. 475 (2005)] have shown that it is possible to\nrecognize paper samples via their speckle pattern by using a line-shaped laser\nfocus, four photo detectors and a scanning mechanism. In this report\nrecognition of five out of ten paper samples is presented. The sample was\nilluminated by a 2.62 +- 0.02 mm circular spot and the reflected light was\nmeasured by a static CCD. We have formulated a criterion for recognition that\nlimits the probability of false recognition to 0.1 % for the experiment with\nten samples. We obtained results that show that the probability of false\nrecognition will be negligible for a large amount of samples. The properties of\nspeckle originating from a line and a spot illumination source have been\ncompared to see whether the use of a line results in major advantages for the\nrecognition of samples.",
"arxiv_id": "physics/0610089",
"authors": [
"F. van Beijnum",
"E. G. van Putten",
"K. L. van der Molen",
"A. P. Mosk"
],
"categories": [
"physics.ed-ph",
"physics.optics"
],
"title": "Recognition of paper samples by correlation of their speckle patterns",
"url": "https://arxiv.org/abs/physics/0610089"
},
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