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Table 6 Best subsets of SIP-derived variables to predict CPATLS ranked by the number of included variables (index) and criteria of model selection: R-square, adjusted R-square, Mallow’s C(p) and Akaike Information Criterion (AIC); three best subsets, analysed further, are denoted in italics

From: Single-image photogrammetry for deriving tree architectural traits in mature forest stands: a comparison with terrestrial laser scanning

Index

Predictors

R-square

Adj. R-square

C(p)

AIC

1 (LM[1])

CWSIP***

0.70

0.69

14.92

407.30

2 (LM[2])

CWSIP***, MBASIP**

0.75

0.74

5.12

398.47

3 (LM[3])

CWSIP***, MBASIP***, MBTSIP*

0.77

0.76

3.12

396.24

4

CWSIP***, MBASIP***, MBTSIP^, CWASIP^

0.78

0.77

2.28

395.02

5

CWSIP***, MBASIP***, MBTSIP^, CWASIP^, FBHSIP

0.79

0.77

2.56

394.99

6

CWSIP***, MBASIP***, MBTSIP, CWASIP^, HSIP^, DBHSIP

0.80

0.77

3.29

395.42

7

CWSIP***, MBASIP***, MBTSIP, CWASIP*, FBHSIP, HSIP, DBHSIP

0.80

0.77

4.49

396.41

8

CWSIP**, MBASIP**, MBTSIP, CWASIP*, FBHSIP, HSIP, DBHSIP, MBLSIP

0.80

0.77

6.14

397.97

9

CWSIP^, MBASIP**, MBTSIP, CWASIP*, FBHSIP, HSIP, DBHSIP, MBLSIP, CASIP

0.80

0.76

8.03

399.82

10

CWSIP, MBASIP*, MBTSIP, CWASIP^, FBHSIP, HSIP, DBHSIP, MBLSIP, CASIP, CLSIP

0.80

0.76

10.01

401.80

11

CWSIP, MBASIP**, MBTSIP, CWASIP^, FBHSIP, HSIP, DBHSIP, MBLSIP, CASIP, CLSIP, ALSIP

0.80

0.75

12.00

403.79

  1. *p < 0.05; **p < 0.01; ***p < 0.001; ^p < 0.1