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. 2019 Dec 23;9:19674. doi: 10.1038/s41598-019-55876-3

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Correlation between root traits calculated using semi-automated saRIA (y-axis) and manual SmartRoot (x-axis) image segmentation. Each point represents a trait value estimated from one of 126 soil-root images. The red color solid line and dotted lines represent a fitted curve and 95% confidence bounds, respectively. The R² value indicates good conformity between saRIA and SmartRoot results of image segmentation and trait calculation.