A Navigation System for the Visually Impaired: A Fusion of Vision and Depth Sensor

Table 3

Obstacle detection rate and comparison of blind and blindfolded persons.

	Blindfolded		Blind
Obstacle	Detection	Speed	Detection	Speed
	time (sec)	(m/sec)	time (sec)	(m/sec)
Wall (corridor)	0.25	0.4	0.25	0.6
Pillar (open square)	0.3	0.3	0.3	0.5
People (open square)	0.28	—	0.25	—
Noticeboard	0.3	0.3	0.3	0.5
Obstacles (lab)	0.25	0.3	0.25	0.4
No obstacle (open square)	0.25	0.4	0.25	0.55