Experimental Study of Light Propagation in Apple Tissues Using a Multispectral Imaging System
| Autor: | Jean-Pierre L'Huillier, Mohamed Lamine Askoura, Fabrice Vaudelle |
|---|---|
| Přispěvatelé: | Ecole supérieure d'Agricultures d'Angers (ESA), Laboratoire Angevin de Mécanique, Procédés et InnovAtion (LAMPA), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
lcsh:Applied optics. Photonics
optical properties imaging and signal processing Materials science Infrared Multispectral image Light reflectance Sciences de l'ingénieur 01 natural sciences 040501 horticulture law.invention 010309 optics [SPI]Engineering Sciences [physics] Optics Light propagation law 0103 physical sciences Radiology Nuclear Medicine and imaging apple skin and flesh Absorption (electromagnetic radiation) Instrumentation Photon diffusion Remote sensing multispectral imaging system business.industry Scattering scattering lcsh:TA1501-1820 light propagation apple skin and flesh 04 agricultural and veterinary sciences Laser Atomic and Molecular Physics and Optics 0405 other agricultural sciences business |
| Zdroj: | Photonics Photonics, MDPI, 2016, 3 (3), pp.50 Photonics, Vol 3, Iss 3, p 50 (2016) Photonics; Volume 3; Issue 3; Pages: 50 |
| ISSN: | 2304-6732 |
| Popis: | International audience; This work aimed at high lighting the role played by the skin in the light propagation through the apple flesh. A multispectral Visible-Near Infrared (Vis-NIR) steady-state imaging setup based on the use of four continuous laser sources (633, 763, 784, and 852 nm) and a charge–coupled–device (CCD) camera was developed to record light diffusion inside apple tissues. Backscattering images and light reflectance profiles were studied to reveal optical features of three whole and half-cut apple varieties with and without skin. The optical absorption and scattering properties (µa, µ’s) of intact apples and peeled apples were also retrieved in reflectance mode, using an optimal sensing range of 2.8–10 mm. A relative difference for ∆µa ranging from 3.4% to 24.7% was observed for intact apples with respect to peeled apples. Under the same conditions, no significant changes were noted for ∆µ’s, which ranged from 0.1% to 1.7%. These findings show that the apple skin cannot be ignored when using Vis-NIR optical imaging as a non-destructive sensing means to reveal major quality attributes of fruits. |
| Databáze: | OpenAIRE |
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