Effect of the diameter and colour of colorimeter aperture reducing templates on colour coordinate measurements
DOI:
https://doi.org/10.3989/mc.2008.v58.i291.100Keywords:
Colorimetry, templates, colorimetric coordinates, adaptersAbstract
The colour coordinate values measured with the colorimeters presently on the market are the mean of the readings obtained for the surface area covered by the light projection tube. When the colour of the surface measured is not uniform, such as in the case of stone, the larger the tube aperture the more representative is the colour measurement, for a larger area is involved. While this is often an advantage, when the area studied is smaller than the aperture of the colorimeter used, the values obtained include unwanted information.
One possible way to deal with this drawback is by using templates to reduce the measurement area. Templates adapted to a Minolta CR-210 colorimeter were tested in the present study. The conclusion drawn was that in addition to being convenient to use, they ensured that the readings matched the original colour of the surface, i.e., the value that would have been obtained without the templates.
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(1) Tantaswadi, P.: “Applications of colorimetry in machine visions for checking electronic components and quality of pulp paper”. Proceedings of SPIE - The International Society for Optical Engineering, vol. 4535 (2000), pp. 119-125.
(2) Bruecker, F.: “Zur theorie und praxis der farbmessung als massnahme der qualitaetssicherung an keramikoberflaechen (colorimetry in theory and practice as a quality assurance measure for ceramic surfaces)”. CFI, Ceramic Forum-Int/Berichte der DKG (Deutschen Keramischen Gesellschaft), vol. 58, nº 3 (1981), pp. 180-184.
(3) Chao, M.K.; Hake, Br. P.: “Colorimetry applications in the automotive industry”. Proceedings of SPIE - The International Society for Optical Engineering, vol. 411 (1983), pp. 47-48.
(4) Kopec, G.J.: “Colorimetry as diagnostic tool in manufacture of antireflection coatings”. Proceedings of SPIE - The International Society for Optical Engineering, vol. 4517 (2001), pp. 236-241.
(5) Mangine, H.; Jakes, K.; Noel, C.: “A preliminary comparison of CIE color differences to textile color acceptability using average observers”. Color Research and Application, vol. 30, nº 4 (2005), pp. 288-294. doi:10.1002/col.20124
(6) Alcalde, M.; Villegas, R.; Vale, J.F.; Martín, A.: ``Diagnosis y tratamiento de la piedra. I. La alteración de la piedra en los monumentos. II’´. Consolidantes e hidrófugos. Productos para el tratamiento de materiales pétreos. Madrid, C.S.I.C. 1990.
(7) Villegas, R.; Espinosa, J.: La investigación científica aplicada a la caracterización de materiales y la selección de tratamientos de conservación. Ph. Boletín del Instituto andaluz del patrimonio histórico vol. 8, nº 33 (2000).
(8) Villegas, R.: Evaluation of Treatment Products for the Front Door of the Church of Santiago, Guadix. Mater, Construcc., vol. 51, nº 261 (2001), pp. 21-32.
(9) D`Ossat, A. : Guide to the methodical study of monuments and causes of their deterioration. Faculty of architecture of Rome. ICCROM. 1982.
(10) Alejandre, F.J.; Villegas, R.; Jurado, M.: Evaluation of Performance of Materials Used in the Ceramic Materials of the Plaza de España (Sevilla). Mater. Construcc., vol. 55, nº 278 (2005), pp. 69-76.
(11) Prieto, B.; Silva, B.: Biofilm quantification on stone surfaces: comparison of various methods. Science of the Total Environment, 333 (2004), pp. 1-7. doi:10.1016/j.scitotenv.2004.05.003
(12) Prieto, B.; Rivas, T.; Silva, B.: Rapid quantification of photographic microorganisms and their physicological state through their colour. Biofouling, vol. 18, nº 3 (2002), pp. 229-236.
(13) Mellégol, J.; Lemaire, J.; Gardette, J.L.: Yellowing of oil-based paints. Studies in Conservation, vol. 46, nº 2 (2001), pp 121-131. doi:10.2307/1506842
(14) Koestler, R.J.; Parreira, E.; Santoro, E. D.; Noble, P.: Visual effects of selected biocides on easel painting materials. Studies in Conservation, vol. 38, nº 4 (1993), pp. 165-173.
(15) Varas, M.J.; Molina, E.; Vicente, M.A.: Areniscas ornamentales empeladas en Ciudad Rodrigo, Salamanca: caracterización petrográfica y química de los materiales de cantera. Materiales de construcción, vol. 52, nº 266 (2002). (16) Artigas, J.M.; Pujol i Ramo, J.; Capilla Perea, P.: “Fundamentos de colorimetría” (ISBN: 8437054206).
(17) CIE (Comission International de l`Eclaraige). Recommendations on uniform color spaces, color difference equations psychometric color terms. Supplement nº2 to CIE publication nº1Gráfica 1. Evolución de las pendientes de las rectas de transformación con el diámetro interior de las plantillas.
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