Table 1. Performance errors of automatic segmentation methods.

Method	Class	Error
BleND*	Normal	0.935±0.222
	Dysmorphic	0.936±0.131
LS**	Normal	1.607±0.861
	Dysmorphic	2.678±2.243
GVF***	Normal	1.022±0.345
	Dysmorphic	1.153±0.386

*Threshold settings: Global = Triangle, Local = Mean

**LS = Level Set Active Contour: Advection 2.20, Curvature 0.10, Grayscale Tolerance 0.01, Convergence 0.0030

***GVF = Gradient Vector Flow Active Contour: Iterations 400, Tension or alpha 0, Rigidity or beta 0, External force or kappa, 30.