Browsing by Author "Ma, Kwan-Liu"

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A Gesture System for Graph Visualization in Virtual Reality Environments
(2017-01-01)
Huang, Yi-Jheng
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Fujiwara, Takanori
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Lin, Yun-Xuan
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Lin, Wen-Chieh
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Ma, Kwan-Liu
As virtual reality (VR) hardware technology becomes more mature and affordable, it is timely to develop visualization applications making use of such technology. How to interact with data in an immersive 3D space is both an interesting and challenging problem, demanding more research investigations. In this paper, we present a gesture input system for graph visualization in a stereoscopic 3D space. We compare desktop mouse input with gesture input with bare hands for performing a set of tasks on graphs. Our study results indicate that users are able to effortlessly manipulate and analyze graphs using gesture input. Furthermore, the results also show that using gestures is more efficient when exploring the complicated graph.
Improving Spatial Orientation in Immersive Environments
(2016-01-01)
Kotlarek, Joseph
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Lin, I-Chen
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Ma, Kwan-Liu
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交大名義發表
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National Chiao Tung University
In this paper, we present a comparative evaluation of three different approaches to improving users' spatial awareness in virtual reality environments, and consequently their user experience and productivity. Using a scientific visualization task, we test the performance of 21 participants to navigate around a virtual immersive environment. Our results suggest that using landmarks, a 3D minimap, and waypoint navigation all contribute to improved spatial orientation, while the macroscopic view of the environment provided by the 3D minimap has the greatest positive impact on spatial orientation. Users also prefer the 3D minimap for usability and immersion by a wide margin over the other techniques.