Title
ElastImpac: 2.5D Multilevel Instant Impact Using Elasticity on Head-Mounted Displays
Abstract
Impact is a common effect in both daily life and virtual reality (VR) experiences, e.g., being punched, hit or bumped. Impact force is instantly produced, which is distinct from other force feedback, e.g., push and pull. We propose ElastImpact to provide 2.5D instant impact on a head-mounted display (HMD) for realistic and versatile VR experiences. ElastImpact consists of three impact devices, also called impactors. Each impactor blocks an elastic band with a mechanical brake using a servo motor and extending it using a DC motor to store the impact power. When releasing the brake, it provides impact instantly. Two impactors are affixed on both sides of the head and connected with the HMD to provide the normal direction impact toward the face (i.e., 0.5D in z-axis). The other impactor is connected with a proxy collider in a barrel in front of the HMD and rotated by a DC motor in the tangential plane of the face to provide 2D impact (i.e., xy-plane). By performing a just-noticeable difference (JND) study, we realize users' impact force perception distinguishability on the heads in the normal direction and tangential plane, separately. Based on the results, we combine normal and tangential impact as 2.5D impact, and performed a VR experience study to verify that the proposed 2.5D impact significantly enhances realism.
Year
DOI
Venue
2019
10.1145/3332165.3347931
Proceedings of the 32nd Annual ACM Symposium on User Interface Software and Technology
Keywords
Field
DocType
elastic force, force feedback, haptic feedback, impact, virtual reality, wearable device
Instant,Virtual reality,Computer science,Human–computer interaction,Elasticity (economics),Haptic technology
Conference
ISBN
Citations 
PageRank 
978-1-4503-6816-2
1
0.35
References 
Authors
0
2
Name
Order
Citations
PageRank
Hsin-Ruey Tsai1367.19
Bing-Yu Chen21132101.82