{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T18:55:12Z","timestamp":1772909712039,"version":"3.50.1"},"reference-count":28,"publisher":"Association for Computing Machinery (ACM)","issue":"3","license":[{"start":{"date-parts":[[2007,7,29]],"date-time":"2007-07-29T00:00:00Z","timestamp":1185667200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["ACM Trans. Graph."],"published-print":{"date-parts":[[2007,7,29]]},"abstract":"<jats:p>The present contribution aims at creating color images printed with fluorescent inks that are only visible under UV light. The considered fluorescent inks absorb light in the UV wavelength range and reemit part of it in the visible wavelength range. In contrast to normal color printing which relies on the spectral absorption of light by the inks, at low concentration fluorescent inks behave additively, i.e. their light emission spectra sum up. We first analyze to which extent different fluorescent inks can be superposed. Due to the quenching effect, at high concentrations of the fluorescent molecules, the fluorescent effect diminishes. With an ink-jet printer capable of printing pixels at reduced dot sizes, we reduce the concentration of the individual fluorescent inks and are able to create from the blue, red and greenish-yellow inks the new colorants white and magenta. In order to avoid quenching effects, we propose a color halftoning method relying on diagonally oriented pre-computed screen dots, which are printed side by side. For gamut mapping and color separation, we create a 3D representation of the fluorescent ink gamut in CIELAB space by predicting halftone fluorescent emission spectra according to the spectral Neugebauer model. Thanks to gamut mapping and juxtaposed halftoning, we create color images, which are invisible under daylight and have, under UV light, a high resemblance with the original images.<\/jats:p>","DOI":"10.1145\/1276377.1276471","type":"journal-article","created":{"date-parts":[[2007,9,14]],"date-time":"2007-09-14T13:44:55Z","timestamp":1189777495000},"page":"75","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":19,"title":["Color images visible under UV light"],"prefix":"10.1145","volume":"26","author":[{"given":"Roger D.","family":"Hersch","sequence":"first","affiliation":[{"name":"Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Philipp","family":"Donz\u00e9","sequence":"additional","affiliation":[{"name":"Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sylvain","family":"Chosson","sequence":"additional","affiliation":[{"name":"Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL)"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2007,7,29]]},"reference":[{"key":"e_1_2_1_1_1","first-page":"269","article-title":"Device characterization. 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In Symposium on Electronic Imaging, SPIE Vol. 4663, 110--120."},{"key":"e_1_2_1_4_1","first-page":"058","article-title":"Methods and ink compositions for invisibly printed security images having multiple authentication features","volume":"10","author":"Coyle W. J.","year":"2004","unstructured":"Coyle , W. J. , and Smith , J. C. 2004 . Methods and ink compositions for invisibly printed security images having multiple authentication features . US Patent Application 10\/818 , 058 . Coyle, W. J., and Smith, J. C. 2004. Methods and ink compositions for invisibly printed security images having multiple authentication features. US Patent Application 10\/818,058.","journal-title":"US Patent Application"},{"key":"e_1_2_1_5_1","volume-title":"Proc. IS&amp;T 6th Color Imaging Conf., 116--122","author":"Emmel P.","unstructured":"Emmel , P. and Hersch , R. D . 1998. Spectral Color Prediction Model for a Transparent Fluorescent Ink on Paper , Proc. IS&amp;T 6th Color Imaging Conf., 116--122 Emmel, P. and Hersch, R. D. 1998. Spectral Color Prediction Model for a Transparent Fluorescent Ink on Paper, Proc. IS&amp;T 6th Color Imaging Conf., 116--122"},{"key":"e_1_2_1_6_1","first-page":"173","article-title":"Physical models for color predictions. In Sharma (2003a)","volume":"3","author":"Emmel P.","year":"2003","unstructured":"Emmel , P. 2003 . Physical models for color predictions. In Sharma (2003a) , Ch. 3 , 173 -- 238 . Emmel, P. 2003. Physical models for color predictions. In Sharma (2003a), Ch. 3, 173--238.","journal-title":"Ch."},{"key":"e_1_2_1_7_1","first-page":"385","article-title":"Device characterization. In Sharma (2003a)","volume":"6","author":"Hains C.","year":"2003","unstructured":"Hains , C. , Wang , S.-G. , and Knox , K. 2003 . Device characterization. In Sharma (2003a) , Ch. 6 , 385 -- 490 . Hains, C., Wang, S.-G., and Knox, K. 2003. Device characterization. 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An optimum algorithm for halftone generation for displays and hard copies. In Proceedings of SID, Vol. 21, 185--192","journal-title":"Proceedings of SID"},{"key":"e_1_2_1_10_1","first-page":"54","volume-title":"Ellis Horwood","author":"Hunt R. W. G.","year":"1991","unstructured":"Hunt , R. W. G. 1991 . Measuring Color . Ellis Horwood , Chichester, England , p. 54 . Hunt, R. W. G. 1991. Measuring Color. Ellis Horwood, Chichester, England, p. 54."},{"key":"e_1_2_1_11_1","volume-title":"Proceedings of 8th IS&amp;T\/SID Color Imaging Conference, 311--317","author":"MacDonald L. W.","unstructured":"MacDonald , L. W. , Morovic , J. , and Xiao , K . 2000. A topographic gamut mapping algorithm based on experimental observer data . In Proceedings of 8th IS&amp;T\/SID Color Imaging Conference, 311--317 . MacDonald, L. W., Morovic, J., and Xiao, K. 2000. A topographic gamut mapping algorithm based on experimental observer data. In Proceedings of 8th IS&amp;T\/SID Color Imaging Conference, 311--317."},{"key":"e_1_2_1_12_1","first-page":"639","article-title":"Gamut mapping. In Sharma (2003a)","volume":"10","author":"Morovic J.","year":"2003","unstructured":"Morovic , J. 2003 . Gamut mapping. In Sharma (2003a) , Ch. 10 , 639 -- 685 . Morovic, J. 2003. Gamut mapping. In Sharma (2003a), Ch. 10, 639--685.","journal-title":"Ch."},{"key":"e_1_2_1_13_1","unstructured":"Narita S. and Eto K. 2002. Method for fluorescent image formation print produced thereby and thermal transfer sheet thereof. US Patent US 7 005 166 B2.  Narita S. and Eto K. 2002. Method for fluorescent image formation print produced thereby and thermal transfer sheet thereof. US Patent US 7 005 166 B2."},{"key":"e_1_2_1_14_1","first-page":"70","volume-title":"The Physics and Chemistry of Color","author":"Nassau K.","unstructured":"Nassau , K. 1983. The Physics and Chemistry of Color . John Wiley & amp; Sons, New York City, NY, pp. 70 and 400--405. 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Chromaticity gamut enhancement by heptatone multi-color printing . In Symposium on Electronic Imaging, SPIE Vol. 1909 , 139--151. Ostromoukhov, V. 1993. Chromaticity gamut enhancement by heptatone multi-color printing. In Symposium on Electronic Imaging, SPIE Vol. 1909, 139--151."},{"key":"e_1_2_1_17_1","first-page":"727","article-title":"Color image processing for digital cameras. In Sharma (2003a)","volume":"12","author":"Parulski K.","year":"2003","unstructured":"Parulski , K. , and Spaulding , K. 2003 . Color image processing for digital cameras. In Sharma (2003a) , Ch. 12 , 727 -- 757 . Parulski, K., and Spaulding, K. 2003. Color image processing for digital cameras. In Sharma (2003a), Ch. 12, 727--757.","journal-title":"Ch."},{"key":"e_1_2_1_18_1","doi-asserted-by":"publisher","DOI":"10.1145\/237170.237261"},{"key":"e_1_2_1_19_1","volume-title":"2003a. Digital Color Imaging Handbook","author":"Sharma G.","unstructured":"Sharma , G. , Ed. 2003a. Digital Color Imaging Handbook . 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