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. 2019 Nov 18;10:1472. doi: 10.3389/fpls.2019.01472

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Copyright © 2019 de Castro, Rallo, Suárez, Torres-Sánchez, Casanova, Jiménez-Brenes, Morales-Sillero, Jiménez and López-Granados

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Graphical comparisons of Point cloud-OBIA estimated and field estimated crown area by training system in: (A) January 2017, 15 months after olive plantation; (B) January 2018, 27 months after olive plantation. The normalized root mean square error (nRMSE) and coefficient of determination (R²) derived from the regression fit are included for every scenario (p 0.0001). nRMSE was computed as the percentage of the average of measured values of tree variables. The red solid line is the fitted linear function and the blue dashed line represents the 1:1 line.