Virtual gonio-spectrophotometer for validation of BRDF designs

Andrej Mihálik 1  und Roman Ďurikovič 1
  • 1 Faculty of Mathematics, Physics and Informatics, Mlynská dolina, 842 48, Bratislava, Slovakia


Measurement of the appearance of an object consists of a group of measurements to characterize the color and surface finish of the object. This group of measurements involves the spectral energy distribution of propagated light measured in terms of reflectance and transmittance, and the spatial energy distribution of that light measured in terms of the bidirectional reflectance distribution function (BRDF). In this article we present the virtual gonio-spectrophotometer, a device that measures flux (power) as a function of illumination and observation. Virtual gonio-spectrophotometer measurements allow the determination of the scattering profile of specimens that can be used to verify the physical characteristics of the computer model used to simulate the scattering profile. Among the characteristics that we verify is the energy conservation of the computer model. A virtual gonio-spectrophotometer is utilized to find the correspondence between industrial measurements obtained from gloss meters and the parameters of a computer reflectance model.

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  • [1] S. Achutha, MSc thesis, University of British Columbia (Vancouver, Canada, 2006)

  • [2] G.J. Ward, SIGGRAPH Computer Graphics 26, 265 (1992)

  • [3] R.L. Cook, K.E. Torrance, ACM T. Graphic. 1, 7 (1982)

  • [4] M. Bodart, R. de Pearanda, A. Deneyer, G. Flamant, Build. Environ. 43, 2046 (2008)

  • [5] J. Dorsey, H. Rushmeier, F. Sillion, Digital Modeling of Material Appearance (Morgan Kaufmann, San Francisco, USA, 2008)

  • [6] ISO 2813, Paints and varnishes — Determination of specular gloss of non-metallic paint films at 20 degrees, 60 degrees and 85 degrees

  • [7] ASTM D 523-89, Standard Test Method for Specular Gloss

  • [8] R.S. Hunter, R.W. Harold, The Measurement of Appearance (John Wiley & Sons, Inc., New York, NY, USA, 1987)

  • [9] J. Wills, S. Agarwal, D.J. Kriegman, S.J. Belongie, ACM T. Graphic. 28, 103:1 (2009)

  • [10] J.A. Ferwerda, F. Pellacini, D.P. Greenberg, Proceedings SPIE Human Vision and Electronic Imaging IV 4299, 291 (2001)

  • [11] V. Goossens et al., Surf. Coat. Tech. 204, 551 (2009)

  • [12] H.B. Westlund, G.W. Meyer, In: L. Pocock (Ed.), 28th Annual Conference on Computer Graphics and Interactive Techniques, 12–17 August 2001, Los Angeles, CA, USA (ACM, New York, NY, USA, 2001) 501

  • [13] K.E. Torrance, E.M. Sparrow, J. Opt. Soc. Am. 57, 1105 (1967)

  • [14] R. Ďurikovičc, T. Ágošton, Cent. Eur. J. Phys. 5, 416 (2007)

  • [15] M. Noël, J. Zwinkels, J. Liu, Appl. Optics 45, 3712 (2006)

  • [16] R. Ďurikovič, I. Šedo, Journal of the Applied Mathematics, Statistics and Informatics 3, 17 (2007)


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