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Table 6 Selected plant trait indicators which may be computed using the collected dataset and provided post processing software

From: A spatio temporal spectral framework for plant stress phenotyping

Acronym Full name (unit) Description
Height Height (m) Height (=Z coordinate) above the soil reference height. Negative values are ignored
NDVI Normalized difference vegetation index (−) Defined as \((NIR-R)/(NIR + R)\), where NIR is the near infrared (803 nm)and R is the red (670 nm) reflectance respectively [61]
HS* Hyperspectral reflectance (−) Hyperspectral reflectance, where *\(\in \{1,\ldots , 25\}\) indicates the spectral band index
EGI Excess green index (−) Defined as (\(2G-R-B\)), based on the color reflectance [62]
NEGI Normalized excess green index (−) EGI divided by \((R + G + B)/3\)
NDRI Normalized difference red index (−) Defined as \((G - R)/(G + R)\), based on color values
ERI Excess red index (−) Defined as \(1.4R - G\), based on color reflectance
HSDiff*\(^1\)_*\(^2\) Difference in hyper spectral reflectance (−) Difference in reflectance of two hyperspectral bands *\(^1\)–*\(^2\), where *\(^1\), *\(^2\) \(\in \{1,\ldots , 25\}\) indicates the spectral bands
CanCov Canopy cover (−) The percentage of points labeled as plants. Canopy cover is independent of the evaluation statistic
VolEst Volumetric estimate (m*pixels) The integral over the height of all points. Volumetric estimate is independent of the evaluation statistic
  1. Due to the objective oriented nature of the software suite and comprehensive spatio-temporal nature of the data provided, users of the dataset can readily implement additional indicators of interest such as multichannel vegetation indices, temporal indicators e.g rate of growth for further analysis