METHOD AND APPARATUS FOR USING ILLUMINATION FROM A DISPLAY FOR COMPUTER VISION BASED USER INTERFACES AND BIOMETRIC AUTHENTICATION

摘要

Disclosed is a computer-assisted method for analyzing the surroundings of a display device (11). At least two different patterns are displayed successively on a display device (11) connected to a computer (10). A camera (15) is also connected to the computer (10) and is directed towards objects in front of the display device (11). Each time a pattern is displayed on the display device (11), at least one image of the surroundings is captured. The captured images are combined to create a difference image.