Table 3 Correlation between mean patch area in ha, total class cover in ha, and compactness of patches (mean smallest circumscribing circle) and F1-score.

From: Consumer-grade UAV imagery facilitates semantic segmentation of species-rich savanna tree layers

Model

Training data

Test data

Mean patch area

Class area

Compactness

Mean patch area

Class area

Compactness

U256

186

0.253*

0.874

145

 − 0.122

 − 0.194

U512

139

0.125

 − 0.373

 − 36.2

 − 0.0615

0.283

U1024

147

0.254*

1.49

127

0.0418

0.957

F256

78.6

0.244

1.13

150

 − 0.185

 − 0.734

F512

20.3

0.297*

2.57

133

 − 0.122

 − 0.344

F1024

 − 142

0.186

2.94

 − 82.4

 − 0.0717

0.815

D256

99.3

0.241

1.03

155

 − 0.154

 − 0.368

D512

115

0.187

 − 0.502

115

 − 0.174

 − 0.743

D1024

5.47

0.248*

1.3

88.1

 − 0.081

 − 0.073

  1. Values represent the slope of a linear regression line. Asterisks indicate p-values below 0.05. No p-value was below 0.01. Degrees of freedom = 14.
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