Table 3: Characteristics of the data sets used for the calibration and validation of the algorithm. Statistics of the stem density are indicated for each data set, including minimum (Min), mean (Mean), maximum (Max), range (Range), standard deviation (SD), and coefficient of variation (CV) of the stem density.

Number of image extractsStem density (stem/m2)
DatasetNameGréouxClermontMinMeanMaxRangeSDCV (%)

CalibrationCgc13241611249399187913226.77
ValidationVgc6620816156190674517931.91

CalibrationCg1321123576054937721.57
ValidationVg661613526014407822.16

CalibrationCc41630854999168310118.04
ValidationVc20837366290653311617.52