Browsing by Author "Chiang, Chi-huan"

Now showing 1 - 2 of 2

PuPoP: Pop-up Prop on Palm for Virtual Reality
(2018-01-01)
Teng, Shan-Yuan
;
Kuo, Tzu-Sheng
;
Wang, Chi
;
Chiang, Chi-huan
;
Huang, Da-Yuan
The sensation of being able to feel the shape of an object when grasping it in Virtual Reality (VR) enhances a sense of presence and the ease of object manipulation. Though most prior works focus on force feedback on fingers, the haptic emulation of grasping a 3D shape requires the sensation of touch using the entire hand. Hence, we present Pop-up Prop on Palm (PuPoP), a light-weight pneumatic shape-proxy interface worn on the palm that pops several airbags up with predefined primitive shapes for grasping. When a user's hand encounters a virtual object, an airbag of appropriate shape, ready for grasping, is inflated by way of the use of air pumps; the airbag then deflates when the object is no longer in play. Since PuPoP is a physical prop, it can provide the full sensation of touch to enhance the sense of realism for VR object manipulation. For this paper, we first explored the design and implementation of PuPoP with multiple shape structures. We then conducted two user studies to further understand its applicability. The first study shows that, when in conflict, visual sensation tends to dominate over touch sensation, allowing a prop with a fixed size to represent multiple virtual objects with similar sizes. The second study compares PuPoP with controllers and freehand manipulation in two VR applications. The results suggest that utilization of dynamically-changing PuPoP, when grasped by users in line with the shapes of virtual objects, enhances enjoyment and realism. We believe that PuPoP is a simple yet effective way to convey haptic shapes in VR.
TilePoP: Tile-type Pop-up Prop for Virtual Reality
(2019-01-01)
Teng, Shan-Yuan
;
Lin, Cheng-Lung
;
Chiang, Chi-huan
;
Kuo, Tzu-Sheng
;
Chan, Liwei
We present TilePoP, a new type of pneumatically-actuated interface deployed as foor tiles which dynamically pop up by infating into large shapes constructing proxy objects for whole-body interactions in Virtual Reality. TilePoP consists of a 2D array of stacked cube-shaped airbags designed with specifc folding structures, enabling each airbag to be infated into a physical proxy and then defated down back to its original tile shape when not in use. TilePoP is capable of providing haptic feedback for the whole body and can even support human body weight. Thus, it allows new interaction possibilities in VR. Herein, the design and implementation of TilePoP are described in detail along with demonstrations of its applications and the results of a preliminary user evaluation conducted to understand the users' experience with TilePoP.