Controllers or Bare Hands? A Controlled Evaluation of Input Techniques on Interaction Performance and Exertion in Virtual Reality
In this paper, we study the impact of VR input modalities (controllers vs. free-hand) on physical exertion, agency, and task performance with two mid-air interaction techniques (touch, raycast) for selection and trajectory-tracing tasks. VR controllers led to reduced physical exertion, improved control, and enhanced speed and accuracy, especially in raycast settings. Regarding personal preference, participants chose VR controllers for raycast but free-hand interaction for mid-air touch. Physical exertion increased with selection speed, quantity of arm motion, variation in motion speed, and bad postures, following ergonomics metrics such as consumed endurance and rapid upper limb assessment. Physical exertion was also negatively correlated with agency and task accuracy.
Oct 9, 2023
ViGather: Inclusive Virtual Conferencing with a Joint Experience Across Traditional Screen Devices and Mixed Reality Headsets
ViGather is an immersive teleconferencing system that integrates users of all platform types into a joint experience via equal representation and a first-person experience. ViGather renders all participants as embodied avatars in one shared scene to establish co-presence and elicit natural behavior during collocated conversations, including nonverbal communication cues such as eye contact between participants as well as body language such as turning one’s body to another person or using hand gestures to emphasize parts of a conversation during the virtual hangout.
Sep 13, 2023
InfinitePaint: Painting in Virtual Reality with Passive Haptics Using Wet Brushes and a Physical Proxy Canvas
InfinitePaint is a system that supports digital painting in Virtual Reality on real paper with a real wet brush. We use special paper that turns black wherever it comes into contact with water and turns blank again upon drying. A single camera captures those temporary strokes and digitizes them while applying properties like color or other digital effects. We tested our system with artists and compared the subjective experience with a drawing tablet.
Apr 26, 2023