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Regression analysis of 3D features with Spearman’s ρ and p-values for (a) 3D ratio over 3D index, (b) 3D extent over 3D index, (c) 3D intensity over 3D index, (d) 3D extent over 3D ratio, (e) 3D extent over 3D intensity, and (f) 3D ratio over 3D intensity.
