Calibration of a Gesture Recognition Interface System
First Claim
1. 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; and
an automated calibration component configured to issue the calibration command and to associate features of the at least one calibration pattern in the received images with known physical locations.
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Accused Products
Abstract
One embodiment of the invention includes 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 comprises 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. The system also comprises 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 and at least one camera configured to receive images of the background surface in both the first light spectrum and the second light spectrum. The system further comprises an automated calibration component configured to issue the calibration command and to associate features of the at least one calibration pattern in the received images with known physical locations.
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Citations
20 Claims
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1. 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:
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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; and an automated calibration component configured to issue the calibration command and to associate features of the at least one calibration pattern in the received images with known physical locations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for calibrating a gesture recognition interface system, the method comprising:
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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 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 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. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A gesture recognition interface system comprising:
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means for receiving images of a background surface; 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; means 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. - View Dependent Claims (18, 19, 20)
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Specification