{
  "annotation_id": "99e54f30-682c-4618-9c85-b5e0c097df24",
  "date_created": "2026-03-02T18:01:14.860000Z",
  "date_modified": "2026-03-02T18:01:14.860000Z",
  "file_hash": "677353cf3480365e5d811e4300c1966cc84bdffab8cd6e56c9e1a5f77ba5cff8",
  "private": false,
  "record": {
    "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"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6e4efa9a-450b-4a1f-80fc-a623c75c62f8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}