Calibration of a gesture recognition interface system

A method for calibrating a gesture recognition interface system, the method comprising:

• providing at least one light source configured to illuminate a background surface in a first light spectrum to generate a reflected light contrast between an input object and the illuminated background surface;
• providing at least one camera configured to receive images of the illuminated background surface and provide the images to a gesture recognition controller that determines input gestures based on the reflected light contrast, the at least one camera comprising a filter configured to pass a first amount of the first light spectrum and a second amount of a second light spectrum;
• confirming that the at least one light source is deactivated;
• adjusting an exposure of at least one of the at least one camera;
• displaying at least one calibration pattern on the background surface in the second light spectrum;
• and
• associating features of the at least one calibration pattern with known physical locations based on the received images based on reflection of the second light spectrum from the background surface and the adjusted exposure of the at least one of the at least one camera.

A gesture recognition interface system comprising:

• means for receiving images of a background surface in both IR illumination and visible light, the means for receiving images comprising means for passing a first amount of the IR illumination and a second amount of the visible light, the first amount being substantially greater than the second amount;
• means for generating infrared (IR) illumination to provide a brightness contrast between the background surface and an input object;
• means for generating three-dimensional location information associated with the input object based on the received images, and for translating changes in the three-dimensional location information of the input object into a given input gesture;
• means for displaying at least one calibration pattern in visible light on the background surface;
• and
• means for calibrating the means for generating the three-dimensional location information based on features of the at least one calibration pattern in the received images, the means for calibrating being configured to adjust an exposure of the means for receiving images to increase a light contrast between the features of the at least one calibration pattern and the background surface.