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Tracking Requirements in Augmented Reality
§ The type of display used by the augmented reality system will determine the accuracy needed for registration of the real and virtual images. The central fovea of a human eye has a resolution of about 0.5 min of arc. In this area the human eye is capable of differentiating alternating brightness bands that subtend one minute of arc. That capability defines the ultimate registration goal for an augmented reality system.
§ The current technology for head tracking specifies an orientation accuracy of 0.15, so it is needed to maintain single pixel alignment on augmented reality displays.
§ Measurement delays have been found in the 40 to 100 msec range for typical position sensors which is a significant part of the 100 msec cycle time needed for real-time operation.
§ Looking for different technology for position tracking (Hybrid)