Deconvolution of non-zero solid angles effect in Bidirectional Scattering Distribution Function measurements

A. Ferrero; J. Campos; A. M. Rabal; A. Pons; M. L. Hernanz; A. Corrons

doi:10.1117/12.889528

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23 May 2011 Deconvolution of non-zero solid angles effect in Bidirectional Scattering Distribution Function measurements

A. Ferrero; J. Campos; A. M. Rabal; A. Pons; M. L. Hernanz; A. Corrons

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Proceedings Volume 8083, Modeling Aspects in Optical Metrology III; 808315 (2011) https://doi.org/10.1117/12.889528
Event: SPIE Optical Metrology, 2011, Munich, Germany

Abstract

The Bidirectional Scattering Distribution Function (BSDF) of a surface depicts how it scatters the optical radiation, being therefore fundamental in order to explain the visual appearance of the objects. This work assesses the effect that the use of non-zero solid angles of illumination and detection has in the BSDF measurement, and it proposes a matrix-based formalism to allow this effect to be compensated from the measured BSDF and from the previous knowledge of the solid angles involved in the measurements. This deconvolution is important to obtain a better insight of the surface gloss, since it provides a more accurate absolute peak measurement and a better angular resolution in the directional scattering determination.

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A. Ferrero, J. Campos, A. M. Rabal, A. Pons, M. L. Hernanz, and A. Corrons "Deconvolution of non-zero solid angles effect in Bidirectional Scattering Distribution Function measurements", Proc. SPIE 8083, Modeling Aspects in Optical Metrology III, 808315 (23 May 2011); https://doi.org/10.1117/12.889528

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