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

Authors :
Maria P. Diago
J.G. Camarasa
Eugenio Ivorra
Javier Tardáguila
Antonio J. Sánchez
CSIC - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)
European Commission
Universidad Politécnica de Valencia
Source :
Digital.CSIC. Repositorio Institucional del CSIC, instname, RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Publication Year :
2015
Publisher :
Elsevier, 2015.

Abstract

© 2014 Elsevier Ltd. 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.<br />This work has been partially funded by the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria de España (INIA – Spanish National Institute for Agriculture and Food Research and Technology) through research project RTA2012-00062-C04-02, support of European FEDER funds, UPV-SP20120276 and AGL2011-23673 project.

Details

Database :
OpenAIRE
Journal :
Digital.CSIC. Repositorio Institucional del CSIC, instname, RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Accession number :
edsair.doi.dedup.....c533e98a1ecb129a235969cc40314cb0