Hyperspectral Imaging for Peach Ripening Assessment

Lleó García, Lourdes and Diezma Iglesias, Belen and Roger, Jean-Michel and Herrero Langreo, Ana (2010). Hyperspectral Imaging for Peach Ripening Assessment. In: "7º Colloquium Chemiometricum Mediterraneun (CCM VII 2010)", 21/06/2010 - 24/06/2010, Granada, España.

Description

Title: Hyperspectral Imaging for Peach Ripening Assessment
Author/s:
  • Lleó García, Lourdes
  • Diezma Iglesias, Belen
  • Roger, Jean-Michel
  • Herrero Langreo, Ana
Item Type: Presentation at Congress or Conference (Article)
Event Title: 7º Colloquium Chemiometricum Mediterraneun (CCM VII 2010)
Event Dates: 21/06/2010 - 24/06/2010
Event Location: Granada, España
Title of Book: e-Proceedings of the 7º Colloquium Chemiometricum Mediterraneun (CCM VII 2010)
Date: 2010
Subjects:
Freetext Keywords: Image Analysis, Ripeness, Quality, Vision.
Faculty: E.U.I.T. Agrícolas (UPM)
Department: Ciencia y Tecnología Aplicadas a la Ingeniería Técnica Agrícola [hasta 2014]
UPM's Research Group: Técnicas Avanzadas en Agroalimentación LPF-TAGRALIA
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The present research is focused on the application of artificial vision to peach ripening assessment, avoiding multiplicative and additive effect. Original images were acquired with a hyperspectral camera. Vision allows a spatially detailed determination of the ripening stage of the fruit. Optical indexes are proposed, 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. Score images have been also computed from Principal Components and Partial Least Squares Analysis. In any case the best performances correspond to such images that correct multiplicative and additive effects. 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. This fact has been also observed in some of the score images

More information

Item ID: 7989
DC Identifier: http://oa.upm.es/7989/
OAI Identifier: oai:oa.upm.es:7989
Official URL: http://www.ugr.es/~ecugr/es/welcome.html
Deposited by: Memoria Investigacion
Deposited on: 08 Jul 2011 11:53
Last Modified: 03 Nov 2016 17:00
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