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. 2016 Jun 24;12:35. doi: 10.1186/s13007-016-0134-6

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© The Author(s) 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — Empirical observation of non-linear relationship between percent gray values of the calibration panel and their corresponding mean reflectance values at the spectral region of Canon S100 wavebands (B: 400–495, G: 490–550, NIR: 680–760)