Comparison of multispectral indexes extracted from hyperspectral images for the assessment of fruit ripening | Comparaison d'indices multispectraux extraits d'images hyperspectrales, pour la caractérisation de la maturité des fruits
Lleó, L. | Roger, J.M. | Herrero-Langreo, A. | Diezma-Iglesias, B. | Barreiro, P. | DEPARTAMENTO DE CIENCIA Y TECNOLOGIAS APLICADAS A LA INGINIERIA TECNICA AGRICOLA ESP ; Partenaires IRSTEA ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | Information – Technologies – Analyse Environnementale – Procédés Agricoles (UMR ITAP) ; Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) | PHYSICAL PROPERTIES AND ADVANCED TECNIQUES IN AGRIFOOD LPF-TAG RURAL ENGINEERING DEPT UNIVERSIDAD POLITECNICA MADRID SPA ; Partenaires IRSTEA ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)
[Departement_IRSTEA]Ecotechnologies [TR1_IRSTEA]INSPIRE
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Показать больше [+] Меньше [-]Английский. The present research is focused on the application of artificial vision to assess the ripening of red skinned soft-flesh peach (Richlady'). Artificial vision allows a spatially detailed determination of the ripening stage of the fruit. The considered optical indexes (Ind1 and Ind2, proposed in the present research, and Ind3 and IAD, proposed by other authors) are based on the combination of wavelengths close to the chlorophyll absorption peak at 680 nm. Ind1 corresponds approximately to the depth of the absorption peak, and Ind2 corresponds to the relative absorption peak. An artificial image of each index was obtained by computing the corresponding reflectance images, which were acquired with a hyperspectral camera. All indexes were able to correct convexity (except for the just-harvested peaches and for Ind1). Ind2 is the preferred index; it showed the highest discriminating power between ripening stages and no influence of convexity. Ind2 also allowed the differentiation of ripening regions within the fruits, and it showed the evolution of those regions during ripening.
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