A Novel Human Computer Interaction Paradigm for Volume Visualization in Projection-Based Virtual Environments

Authors:
Changming He;Andrew Lewis;Jun Jo
Affiliations:
Griffith University, School of Information and Communication, Australia;Griffith University, School of Information and Communication, Australia;Griffith University, School of Information and Communication, Australia
Venue:
SG '07 Proceedings of the 8th international symposium on Smart Graphics
Year:
2007

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Abstract

We propose a novel Human Computer Interaction (HCI) paradigm for volume visualization in projection-based immersive virtual environments (VEs). This paradigm is intuitive, highly efficient and allows accurate control over the virtual objects. A fine control modefor direct manipulation is proposed to address the low accuracy problem of virtual object manipulation in VEs. An agent objectinteraction method is proposed to provide more flexibility in manipulating the volume objects. A two-handed scalingmethod is proposed to conveniently scale the volume object along one, two, or three axes. Finally, a ghost object paradigmis proposed to address the motion constraint problem for virtual objects. An implementation using a 3-state tracked glove setup as the input interface is discussed. How basic functionality for volume visualization can be transferred from the 2D WIMP (Window, Icon, Menu, and Pointer) interface to a 3D VR interface is also systematically discussed.