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

被引：4

作者：

Cubeddu, R ^{[1
]}

Pifferi, A ^{[1
]}

Taroni, P ^{[1
]}

Torricelli, A ^{[1
]}

Valentini, G ^{[1
]}

Ruiz-Altisent, M ^{[1
]}

Valero, C ^{[1
]}

Ortiz, C ^{[1
]}

机构：

[1] Politecn Milan, Dipartimento Fis, INFM, I-20133 Milan, Italy

来源：

OPTICAL TOMOGRAPHY AND SPECTROSCOPY OF TISSUE III, PROCEEDINGS OF | 1999年 / 3597卷

关键词：

fruit; optical properties; photon migration; time-resolved reflectance;

D O I：

10.1117/12.356839

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The non-destructive assessment of the quality of fruits is getting a crucial task. As a possible first step toward the non-invasive 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.

引用

页码：445 / 449

页数：5

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