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<p>Although still in the prototype stage, three-dimensional volumetric displays present unique interface challenges. Current display technologies limit our ability to view and interact with 3D computer graphics because we typically view 3D data on a 2D system that cannot display the depth dimension. </p> <p>Volumetric displays hold the promise of enhancing 3D graphics realism by providing all the depth cues humans require. </p> <p>Incorporating everyday gestures to delineate subportions of the working volume, the authors use physical mockups to consider potentially viable displays and associated input mechanisms. Researchers can use high-fidelity mockups and props to glimpse the future with minimal prototyping effort, before the display and input technologies mature. </p> <p>The authors' mockups elucidate a range of design challenges and volumetric-display opportunities, revealing a rich set of alternative user-interface design options. However, more evaluation must be conducted before it's possible to harness the full potential of interacting with volumetric displays. </p>

R. Balakrishnan, G. Kurtenbach and G. W. Fitzmaurice, "User Interfaces for Volumetric Displays," in Computer, vol. 34, no. , pp. 37-45, 2001.
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