Nondestructive measurements of the optical properties of fruits by means of time-resolved reflectance

Rinaldo Cubeddu; Antonio Pifferi; Paola Taroni; Alessandro Torricelli; Gianluca Valentini; Margarita Ruiz-Altisent; Constantino Valero; Coral Ortiz

doi:10.1117/12.356839

15 July 1999 Nondestructive measurements of the optical properties of fruits by means of time-resolved reflectance

Rinaldo Cubeddu, Antonio Pifferi, Paola Taroni, Alessandro Torricelli, Gianluca Valentini, Margarita Ruiz-Altisent, Constantino Valero, Coral Ortiz

Author Affiliations +

Proceedings Volume 3597, Optical Tomography and Spectroscopy of Tissue III; (1999) https://doi.org/10.1117/12.356839
Event: BiOS '99 International Biomedical Optics Symposium, 1999, San Jose, CA, United States

Abstract

The non-destructive assessment of the quality of fruits is getting a crucial task. As a possible first step toward the noninvasive evaluation of quality, we propose the measurement of the internal optical properties of fruits and vegetables by means of time-resolved reflectance spectroscopy. Mode-locked dye and Titanium:Sapphire lasers are used as the illumination source. The reflectance signal is processed by an electronic chain for time-correlated single-photon counting. The time-dispersion of re-emitted photons is fitted to the solution of the diffusion equation, with absorption and transport scattering as free parameters. The whole instrumentation is computer-controlled and allows one to perform measurements from 610 to 1000 nm. Absorption and scattering spectra of several species of fruits were acquired, and particular attention was devoted to the optical characterization of apples.

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Rinaldo Cubeddu, Antonio Pifferi, Paola Taroni, Alessandro Torricelli, Gianluca Valentini, Margarita Ruiz-Altisent, Constantino Valero, and Coral Ortiz "Nondestructive measurements of the optical properties of fruits by means of time-resolved reflectance", Proc. SPIE 3597, Optical Tomography and Spectroscopy of Tissue III, (15 July 1999); https://doi.org/10.1117/12.356839

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