No abstract
Research spanning psychology, neuroscience and HCI found that depth perception distortion is a common problem in virtual reality. This distortion results in depth compression, where users perceive objects closer than their intended distance. Studies suggested that cues, such as audio and haptic, help to solve this issue. We focus on haptic feedback and investigate how force feedback compares to tactile feedback within peripersonal space in reducing depth perception distortion. Our study (N=12) compares the use of haptic force feedback, vibration haptic feedback, a combination of both or no feedback. Our results show that both vibration and force feedback improve depth perception distortion over no feedback (8.3 times better distance estimation than with no haptic feedback vs. 1.4 to 1.5 times better with either vibration or force feedback on their own). Participants also subjectively preferred using force feedback, or a combination of force and vibration feedback, over no feedback.
Fig. 1. The operation of Autogrip, a new self attaching thimble Autogrip is a new thimble that enables force feedback devices to autonomously attach themselves to a finger. Although self-attachment is a simple concept, it has never been explored in the space of force feedback devices where current thimble solutions require complex attachment procedures and often swapping between interchangeable parts. Self-attachment is advantageous in many applications such as: immersive spaces, multiuser, walk up and use contexts, and especially multi-point force feedback systems as it can allow a lone user to quickly attach multiple devices to fingers on both hands-a difficult task with current thimbles. We present the design of our open-source contraption, Autogrip, a one-size-fits-all thimble that retro-fits to existing force feedback devices, enabling them to automatically attach themselves to a fingertip. We demonstrate Autogrip by retrofitting it to a Phantom 1.5 and a 4-finger Mantis system. We report preliminary user-testing results that indicated Autogrip was three times faster to attach than a typical method. We also present further refinements based on user feedback.
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