Applied Bionics and Biomechanics / 2015 / Article / Tab 1

Research Article

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

Table 1

Commonly used sensory aids for visually impaired persons.

Sensor Cost Type Usability

Guide dog High Genesis Not easily available; needs carer
White cane Low Mechanical Slow and can only find obstacles through touch
Ultrasonic sensor High Electronic machine Signal reflection or absorption may result in false information
Camera Low Electronic machine Needs proper installation
Infrared sensor Low Electronic machine Can only be used for short distances
Laser High Electronic machine Sensitive to sunlight
GPS Low Electronic machine Can only be used in outdoors
Mobile robots High Electromechanical Can only be used on plain and smooth surfaces