Hybrid Particle Swarm Optimization and Its Application to Multimodal 3D Medical Image Registration

Table 3

Comparison result of registration parameters ((c) to (a)).

	Translation				Rotation (degree)
	𝑇𝑥	𝑇𝑦	𝑇𝑧	diff	𝜃𝑥	𝜃𝑦	𝜃𝑧	diff
Answer	10.0	5.0	2.0	—	0.0	0.0	90.0	—
GA	5.33	0.21	0.50	2.29	31.58	40.42	61.94	19.49
PSO	−4.84	2.25	−0.03	2.05	29.21	35.67	92.30	15.39
HPSO	9.98	5.11	1.83	0.07	−0.20	−0.52	87.95	0.71