From: Ear biometrics for patient identification in global health: a cross-sectional study to test the feasibility of a simplified algorithm
Section
Variables
Ratio
Inner triangle
I1
A1:A2
I2
A1:A3
I3
A2:A3
Outer triangle
O1
L1:L2
O2
L1:L3
O3
L2:L3
Curvature
CR1
C1:base
CR2
C2:base
CR3
C3:base
CR4
C4:base
CR5
C5:base
CR6
C6:base
CR7
C7:base