From: Vision based interface system for hands free control of an intelligent wheelchair
Places | Time and illumination |
---|---|
Indoor | (Daytime, fixed illumination) |
 | (Nighttime, fixed illumination) |
Outdoor | (Daytime, time-varying illumination and a shadow) |
 | (Nighttime, -) |
Indoor to outdoor, or vice versa | (Daytime, time-varying illumination and shadow) |