The Use of Colour Bispectral Measurement in Commodity Science
DOI:
https://doi.org/10.15678/ZNUEK.2013.0924.05Keywords:
fluorescence, bispectral, fluorescence plate, scatter lightAbstract
Since fluorescence was discovered it has been more commonly used than other forms of marking, especially as production prices of such products have fallen. Fluorescence plaques are used in areas of upmost importance for public safety. These are most often road signs, car and evacuation route markers. The quality of such signs is crucial, since they are used in life-threatening situations. Reliably testing the quality of such products requires the use of bispectral measurements. Direct measurement of phosphorescing samples is burdened with errors resulting from the emission of light rays scattered by the sample. This article presents examples of quality tests for evacuation sign fluorescence, using bispectral measurements in 0-45° geometry. These measurements significantly reduce errors in comparison to classic methods for measuring colour.
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References
Danger E.P. [1987], The Color Handbook: How to Use Color in Commerce and Industry, Gower, Hampshire.
Encyklopedia fizyki [1972], red. B. Pierzchalska, PWN, Warszawa.
Gonzalez S. [2003], Evaluation of Bispectral Spectrophotometry for Accurate Colorimetry
of Printing Materials, USA.
Hemka L., Rafałowski M. [2012], Wpływ polaryzacji światła na sposób i jakość pomiaru jego parametrów spektroradiometrycznych, Prace Instytutu Elektrotechniki, z. 256, Politechnika Warszawska, Warszawa.
„Insight on Color" [2000], vol. 12, nr 5, HunterLab, Reston.
Kawski A. [1992], Fotoluminescencja roztworów, Wydawnictwo Naukowe PWN, Warszawa.
Moćko W., Żagań W. [2006], Analiza możliwości normalizacji wartości składowych trójchromatycznych z wykorzystaniem przekształcenia nieliniowego, Prace Instytutu Elektrotechniki, z. 228, Politechnika Warszawska, Warszawa.
Sato Y., Ikeuchi K. [1994], Temporal-Color Space Analysis of Reflection, „Journal of the Optical Society of America A", vol. 11, nr 11, November. DOI: https://doi.org/10.1364/JOSAA.11.002990
Sharma G. [2003], Digital Color Imaging Handbook, CRC Press, USA.
Sharma G., Wu W., Dalal E.N. [2005], The CIEDE2000 Color-difference Formula: Implementation Notes, Supplementary Test Data, and Mathematical Observations, „Color Research and Application", vol. 30, nr 1. DOI: https://doi.org/10.1002/col.20070
