SWISH: A Shifting-Weight Interface of Simulated Hydrodynamics for Haptic Perception of Virtual Fluid Vessels

Sagheb, Shahabedin; Liu, Frank Wencheng; Bahremand, Alireza; Kidané, Assegid; LiKamWa, Robert

doi:10.1145/3332165.3347870

Cited by 32 publications

(25 citation statements)

References 23 publications

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“…Similarly, Transcalibur [10] changes its inertia and center of mass by moving weights on a 2D plane of a controller to render the illusion of 2D shape-changing in VR. SWISH [8] is a weight-shifting interface which dynamically changes the center of gravity of a physical vessel to simulate the weight-shifting of liquid. These methods generate the illusions of shape-changing or weightchanging by shifting a weight(s) and changing the center of mass, which leverages the property of a dynamic PAF(s) of gravity.…”

Section: Dynamic Point Of Application Of Force In Virtual Realitymentioning

confidence: 99%

ElastiLinks: Force Feedback between VR Controllers with Dynamic Points of Application of Force

Wei

Tsai

Liao

et al. 2020

Proceedings of the 33rd Annual ACM Symposium on User Interface Software and Technology

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Force feedback is commonly used to enhance realism in virtual reality (VR). However, current works mainly focus on providing different force types or patterns, but do not investigate how a proper point of application of force (PAF), which means where the resultant force is applied to, affects users' experience. For example, users perceive resistive force without torque when pulling a virtual bow, but with torque when pulling a virtual slingshot. Therefore, we propose a set of handheld controllers, ElastiLinks, to provide force feedback between controllers with dynamic PAFs. A rotatable track on each controller provides a dynamic PAF, and two common types of force feedback, resistive force and impact, are produced by two links, respectively. We performed a force perception study to ascertain users' resistive and impact force level distinguishability between controllers. Based on the results, we conducted another perception study to understand users' distinguishability of PAF offset and rotation differences. Finally, we performed a VR experience study to prove that force feedback with dynamic PAFs enhances VR experience.

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Section: Dynamic Point Of Application Of Force In Virtual Realitymentioning

confidence: 99%

ElastiLinks: Force Feedback between VR Controllers with Dynamic Points of Application of Force

Wei

Tsai

Liao

et al. 2020

Proceedings of the 33rd Annual ACM Symposium on User Interface Software and Technology

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“…Hirota et al developed handheld devices to provide the sensation of shaking objects containing inner portions by simulating kinesthetic force with mechanical sliding structures [37,40]. SWISH simulates the weight shifting sensation of a fluid vessel in 3D scale with a motor-actuated weight [32]. Aero-plane is capable of emulating a shifting center of mass in 2 DoF (e.g., the haptic sensation of a ball as it rolls on a handheld plane) by driving two jet-propellers [15].…”

Section: Ungrounded Devices For Weight and Massmentioning

confidence: 99%

“…Some haptic interfaces simulate the force feedback of dynamic mass by shifting center of mass with physical weights [32,37,38,40]. However, since these devices involve heavy and bulky mechanical structures to move actual weights, they lead to users' fatigue and devices' fragility.…”

mentioning

confidence: 99%

DualVib: Simulating Haptic Sensation of Dynamic Mass by Combining Pseudo-Force and Texture Feedback

Tanaka

Horie

Chen³

2020

26th ACM Symposium on Virtual Reality Software and Technology

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We present DualVib, a compact handheld device that simulates the haptic sensation of manipulating dynamic mass; mass that causes haptic feedback as the user's hand moves (e.g., shaking a jar and feeling coins rattling inside). Unlike other devices that require actual displacement of weight, DualVib dispenses with heavy and bulky mechanical structures and, instead, uses four vibration actuators. DualVib simulates a dynamic mass by simultaneously delivering two types of haptic feedback to the user's hand: (1) pseudo-force feedback created by asymmetric vibrations that render the kinesthetic force arising from the moving mass; and (2) texture feedback through acoustic vibrations that render the object's surface vibrations correlated with mass material properties. By means of our user study, we found out that DualVib allowed users to more effectively distinguish dynamic masses when compared to using either pseudoforce or texture feedback alone. We also report qualitative feedback from users who experienced five virtual reality applications with our device. CCS CONCEPTS • Human-centered computing → Human computer interaction (HCI); Haptic devices; User studies.

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“…Yamamoto et al [42] used shaking of a moving weight on a 1-DOF rail to simulate liquid and solid content inside a box. SWISH [26] extends this interaction in three dimensions, simulating the behavior of fuids inside a barrel-sized container. ElastOscillation [39] uses six extendable elastic bands to restrain the movement of a solid mass oscillating inside a cage.…”

Section: Related Work Ungrounded Force-feedback In Vrmentioning

confidence: 99%

“…However, while previous works were able to recreate the illusion of different sizes and shapes of non-deformable objects [28,31] or the movement of particles swirling in containers [26,39], they did not focus on how fexible objects feels in the hand when swung. This includes how the center of mass shifts when the object is bent in multiple axes, and how the object physically reacts (i.e., dynamic response) when swung or shaken.…”

Section: Introductionmentioning

confidence: 99%

ElaStick

Ryu

Lee

Kim

et al. 2020

Proceedings of the 33rd Annual ACM Symposium on User Interface Software and Technology

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Haptic controllers have an important role in providing rich and immersive Virtual Reality (VR) experiences. While previous works have succeeded in creating handheld devices that simulate dynamic properties of rigid objects, such as weight, shape, and movement, recreating the behavior of fexible objects with different stiffness using ungrounded controllers remains an open challenge. In this paper we present ElaStick, a variablestiffness controller that simulates the dynamic response resulting from shaking or swinging fexible virtual objects. This is achieved by dynamically changing the stiffness of four custom elastic tendons along a joint that effectively increase and reduce the overall stiffness of a perceived object in 2-DoF. We show that with the proposed mechanism, we can render stiffness with high precision and granularity in a continuous range between 10.8 and 71.5Nmm/ •. We estimate the threshold of the human perception of stiffness with a just-noticeable difference (JND) study and investigate the levels of immersion, realism and enjoyment using a VR application.

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SWISH: A Shifting-Weight Interface of Simulated Hydrodynamics for Haptic Perception of Virtual Fluid Vessels

Cited by 32 publications

References 23 publications

ElastiLinks: Force Feedback between VR Controllers with Dynamic Points of Application of Force

ElastiLinks: Force Feedback between VR Controllers with Dynamic Points of Application of Force

DualVib: Simulating Haptic Sensation of Dynamic Mass by Combining Pseudo-Force and Texture Feedback

ElaStick

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