Vision-Based System for Assisting Blind People to Wander Unknown Environments in a Safe Way

Table 3

Summary of performance in wandering an unknown environment with the camera in the chest and in the head of the user. F: female, M: male.

Participant	Blind or blindfolded	Gender	Distance (m)		Average speed (m/s)		Number of collisions
			Chest	Head	Chest	Head	Chest	Head
1	Blindfolded	F	26.00	27.32	0.14	0.15	0	0
2	Blindfolded	M	27.08	27.56	0.15	0.15	0	1
3	Blindfolded	M	29.20	28.63	0.16	0.16	1	1
4	Blindfolded	M	30.55	31.44	0.17	0.17	0	0
5	Blindfolded	F	27.23	28.14	0.15	0.16	1	0
6	Blindfolded	M	29.39	30.21	0.16	0.17	0	1
7	Blindfolded	F	29.12	27.87	0.16	0.15	0	0
8	Blind	F	36.42	34.68	0.20	0.19	1	0
9	Blind	F	41.80	37.17	0.23	0.21	1	2
10	Blind	F	32.84	33.60	0.18	0.19	0	1