Patent ID: 8139110

Claim:
A gesture recognition interface system that determines input gestures based on changes in relative locations of an input object to initiate device inputs associated with the input gestures, the system comprising: at least one light source positioned to illuminate a background surface in a first light spectrum to generate a light contrast difference between the input object and the background surface; a display device configured to display at least one calibration pattern on the background surface in a second light spectrum in response to a calibration command; at least one camera configured to receive images of the background surface in both the first light spectrum and the second light spectrum, the at least one camera comprising a filter configured to pass a first amount of the first light spectrum and a second amount of the second light spectrum, the first amount being substantially greater than the second amount; and an automated calibration component configured to issue the calibration command to initiate a calibration procedure, the automated calibration component being further configured to adjust an exposure of the at least one camera to increase a light contrast between the features of the at least one calibration pattern and the background surface and to associate features of the at least one calibration pattern in the received images with known physical locations during the calibration procedure.