Assessment of grape cluster yield components based on 3D descriptors using stereo vision

  1. Ivorra, E. 1
  2. Sánchez, A.J. 1
  3. Camarasa, J.G. 1
  4. Diago, M.P. 2
  5. Tardaguila, J. 2
  1. 1 Universidad Politécnica de Valencia
    info

    Universidad Politécnica de Valencia

    Valencia, España

    ROR https://ror.org/01460j859

  2. 2 Instituto de Ciencias de la Vid y del Vino
    info

    Instituto de Ciencias de la Vid y del Vino

    Logroño, España

    ROR https://ror.org/01rm2sw78

Revista:
Food Control

ISSN: 0956-7135

Año de publicación: 2015

Volumen: 50

Páginas: 273-282

Tipo: Artículo

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DOI: 10.1016/J.FOODCONT.2014.09.004 SCOPUS: 2-s2.0-84907483795 WoS: WOS:000347581100038 GOOGLE SCHOLAR

Otras publicaciones en: Food Control

Resumen

Wine quality depends mostly on the features of the grapes it is made from. Cluster and berry morphology are key factors in determining grape and wine quality. However, current practices for grapevine quality estimation require time-consuming destructive analysis or largely subjective judgment by experts.The purpose of this paper is to propose a three-dimensional computer vision approach to assessing grape yield components based on new 3D descriptors. To achieve this, firstly a partial three-dimensional model of the grapevine cluster is extracted using stereo vision. After that a number of grapevine quality components are predicted using SVM models based on new 3D descriptors. Experiments confirm that this approach is capable of predicting the main cluster yield components, which are related to quality, such as cluster compactness and berry size (R2 > 0.80, p < 0.05). In addition, other yield components: cluster volume, total berry weight and number of berries, were also estimated using SVM models, obtaining prediction R2 of 0.82, 0.83 and 0.71, respectively.