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Keywords = Organization of Vine and Wine (OIV) descriptor 204

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13 pages, 4541 KiB  
Article
High-Precision Phenotyping of Grape Bunch Architecture Using Fast 3D Sensor and Automation
by Florian Rist, Katja Herzog, Jenny Mack, Robert Richter, Volker Steinhage and Reinhard Töpfer
Sensors 2018, 18(3), 763; https://doi.org/10.3390/s18030763 - 2 Mar 2018
Cited by 52 | Viewed by 11156
Abstract
Wine growers prefer cultivars with looser bunch architecture because of the decreased risk for bunch rot. As a consequence, grapevine breeders have to select seedlings and new cultivars with regard to appropriate bunch traits. Bunch architecture is a mosaic of different single traits [...] Read more.
Wine growers prefer cultivars with looser bunch architecture because of the decreased risk for bunch rot. As a consequence, grapevine breeders have to select seedlings and new cultivars with regard to appropriate bunch traits. Bunch architecture is a mosaic of different single traits which makes phenotyping labor-intensive and time-consuming. In the present study, a fast and high-precision phenotyping pipeline was developed. The optical sensor Artec Spider 3D scanner (Artec 3D, L-1466, Luxembourg) was used to generate dense 3D point clouds of grapevine bunches under lab conditions and an automated analysis software called 3D-Bunch-Tool was developed to extract different single 3D bunch traits, i.e., the number of berries, berry diameter, single berry volume, total volume of berries, convex hull volume of grapes, bunch width and bunch length. The method was validated on whole bunches of different grapevine cultivars and phenotypic variable breeding material. Reliable phenotypic data were obtained which show high significant correlations (up to r2 = 0.95 for berry number) compared to ground truth data. Moreover, it was shown that the Artec Spider can be used directly in the field where achieved data show comparable precision with regard to the lab application. This non-invasive and non-contact field application facilitates the first high-precision phenotyping pipeline based on 3D bunch traits in large plant sets. Full article
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Germany)
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