Enlarging Error Detection Threshold of IMU-Based Hand Tracking in VR with Haptic Feedback

Le résumé fourni par la source

Precise hand tracking is critical for realistic finger-based interaction in VR applications, yet tracking errors are inevitable. Since the real hand remains unseen in many applications like VR and teleoperation, imprecise proprioception allows users to tolerate bounded tracking errors. This paper quantifies this threshold for wearable hardware and shows how cutaneous feedback expands it. First, we establish a baseline detection threshold of 5.04 cm for synthetic random offsets. Second, using an IMU-based testbed reproducing realistic errors, we find users are more sensitive to these realistic dynamics, with the threshold dropping to 3.87 cm. We demonstrate that synchronized plausible touch sensations can mask this error, consistently enlarging tolerance by approximately 1 cm for synthetic (5.04 → 6.0cm) and realistic (3.87 → 4.93cm) errors. These results provide concrete accuracy guidelines for hand tracking systems and prove that haptics can relax stringent accuracy requirements.

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