Patent attributes
Content displayed on a display element of a computing device can be rendered from a viewpoint that updates with changes in the relative position of a user's head, or other such feature, with respect to the device. At least one camera of the device can attempt to track the relative position in order to determine the proper viewpoint. When the user's head can no longer be seen, or when confidence in the determined relative position drops below an acceptable value, for example, the device can utilize information from another source, such as a motion or rotation sensor, to attempt to estimate the current position of the user's head. Physical limitations of the user with respect to the device also can be used to improve the accuracy of the determination.