Evaluation of the perceived colour difference under different lighting for museum applications

  • Alice Plutino MIPS Lab, Dipartimento di Informatica, Università degli Studi di Milano, Milano, Italy
  • Laura Grechi Università degli Studi di Milano, Milano, Italy.
  • Alessandro Rizzi MIPS Lab, Dipartimento di Informatica, Università degli Studi di Milano, Milano, Italy.
Keywords: Lighting, Colour Perception, CRI, Museum Lighting

Abstract

The role of lighting in museums has a fundamental importance. Light influences the perception of colours and space in the collections on display, therefore, any type of lighting must be adequately analysed to confirm the suitability and undistorted colour rendering of the illuminated objects. A two-stage perceptual test was carried out for this purpose. Initially, the participants were asked to evaluate the illuminants according to criteria such as: the brilliance of the colours, the degree of pleasantness of the lighting and the degree of overall satisfaction of the setting. Subsequently, the efficiency of different illuminants for the identification of colour differences between two objects was tested. The results obtained were then compared with the most commonly used colour rendering and colour difference indicators in order to determine their potential and limits.

Author Biographies

Alice Plutino, MIPS Lab, Dipartimento di Informatica, Università degli Studi di Milano, Milano, Italy

Alice Plutino - She is a PhD student in Computer science at the university of Milan. She obtained her master’s degree in Conservation Science for Cultural Heritage at the same university. Now, she is focusing on colour correction, image enchantment and image quality assessments. She is author of different papers concerning innovative methods for film restoration and digital restoration assessments.

Laura Grechi, Università degli Studi di Milano, Milano, Italy.

Laura Grechi - She is a graduate of the Master course in Conservation Science for Cultural Heritage at University of Milan. She obtained the master’s degree in October 2019. During her curricular internship at the university she carried out experiments studying colour differences between human perception and colour rendering indexes.

Alessandro Rizzi, MIPS Lab, Dipartimento di Informatica, Università degli Studi di Milano, Milano, Italy.

Alessandro Rizzi - He is Full Professor at the Department of Computer Science at the University of Milan. From 1990 his research has been in the field of colour, digital imaging and vision. He is particularly focused on colour, visualisation, photography, HDR and on the perceptual issues related to digital imaging, interfaces and lighting. He is the head of the MIPS Lab at the Department of Computer Science and was one of the founders of the Italian Colour Group, Secretary of CIE Division 8, IS&T Fellow and Vice President. In 2015 he received the Davies medal from the Royal Photographic Society. He is co-chair of the IS&T Conference “Color Imaging: Displaying, Processing, Hardcopy and Applications”, a member of several programme committees of conferences related to colour and digital imaging,and author of about 300 scientific works.

References

Boissard, S., & Fontoynont, M. (2009). Optimization of LED-based light blendings for object presentation. Color Res. Appl. 34, 310-320.

Brueckner, S., Bodrogi, P., & Khahhn, Q. T. (2009). Colour Rendering of new white LED light sources - visual tests. Lux Eurpoa, pp. 397-404.

Camuffo, D. (2014). Microclimate for cultural heritage - Conservation, restoration, and maintenance of indoor and outdoor monuments. Elsevier.

Feller, R. L. (1968). Control of deteriorating effects of light on museum objects: heating effects of illumination by incandescent light. . Museum News. Technical Supplement, 46(9), 33 - 47.

Fumagalli, S., Bonanomi, C., & Rizzi, A. (2013). An experiment on the color rendering of different light sources. Color Imaging XVIII: Displaying, Processing, Hardcopy and Applications, IS&T- SPIE Electronic Imaging, 3-7- February 2013, San Francisco (USA).

McCamy, C. S., Marcus, H., & Davidson, J. G. (1976). A Color Rendition Chart. Journal of Applied Photographic Engineering 11 (3), pp. 95-99.

Nascimento, S. M., & Masuda, O. (2012). Psychophysical optimization of lighting spectra for naturalness, preference, and chromatic diversity. JOSA A, 29(2), A144-A151.

Nascimento, S. M., & Masuda, O. (2014). Best lighting for visual appreciation of artistic paintings—experiments with real paintings and real illumination. JOSA A, 31(4), A214-A219.

Oleari, C. (1998). Misurare il colore. Hoepli.

Pascale, D. (2006). RGB Coordinates of the Macbeth ColorChecker.

Pinto, P. D., Linhares, J. M., & Nascimento, S. M. (2008). Correlated color temperature preferred by observers for illumination of artistic paintings. JOSA A, 25(3), 623-630.

Pinto, P. D., Linhares, J. M., Carvalhal, J. A., & Nascimento, S. M. (2006). Psychophysical estimation of the best illumination for appreciation of Renaissance paintings. Visual Neuroscience, 23, 669-674.

Scuello, M., Abramov, I., Gordon, J., & Weintraub, S. (2004). Museum lighting: Optimizing the illuminant. Color Res. Appl., 29, 121-127.

Society, I. E. (2018). IES Methods for Evaluating Light Source Color Rendition. ISBN-13: 978-87995-379-9.

Vázquez, D., De Luna, J. M., Alvarez, A., Sánchez, A., & Sedano, U. (2012). Study of chromatic variations between metameres by varying the lighting in the painting" Boy in a turban holding a nosegay. Optical Systems Design, International Society for Optics and Photonics, 8550.

Viénot, F., Coron, G., & Lavédrine, B. (2011). LEDs as a tool to enhance faded colours of museums artefacts. Journal of Cultural Heritage. 12(4), 431-440.

Published
2019-12-01
How to Cite
Plutino, A., Grechi, L. and Rizzi, A. (2019) “Evaluation of the perceived colour difference under different lighting for museum applications”, Color Culture and Science Journal, 11(02), pp. 90-97. doi: 10.23738/CCSJ.110210.
Section
Papers