12-04-2012 дата публикации
Номер: US20120088581A1
Автор:
Methods, devices, and systems, are described for tracking a video game player's head under different ambient lighting conditions and switching between tracking techniques as lighting conditions change. Based on measurements of ambient lighting conditions, a camera hooked to a game console can () track a player's face using facial tracking techniques, () track reflective material on the player's 3-D glasses, or () turn on or up illumination LEDs mounted on the 3-D glasses. 1. A method for camera tracking of a user's head , the method comprising:tracking, using a camera, a user's head by resolving facial features of the user;measuring a first ambient light level;determining that the first ambient light level is beyond a threshold value;tracking, using the camera, the user's head by detecting light reflected from glasses that the user is wearing;switching, based on the determination that the first ambient light level is beyond the first threshold value, between tracking the user's head by resolving facial features and tracking using detected light reflected from the glasses; andoutputting a position, orientation, or motion of the user's head based on the trackings.2. The method of further comprising:measuring a second ambient light level;determining that the second ambient light level is beyond a second threshold value; andturning on or off, based on the determination that the second ambient light level is beyond the second threshold, a light configured to illuminate the glasses.3. The method of further comprising:rendering a 3-D scene based on the position, orientation, or motion of the user's head.4. The method of further comprising:outputting a command to a video game based on the position, orientation, or motion of the user's head.5. The method of wherein the switching is further based on an error rate of the tracking.6. The method of wherein:the first ambient light level is determined to be below the first threshold value; andthe switching is from tracking by ...
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