Daniel Mendes, Fernando Fonseca, Bruno Araujo, Alfredo Ferreira, Joaquim Jorge
3D virtual object manipulation, stereoscopic environments, interactive tabletops, mid-air interactions
Direct manipulation of 3D content using stereoscopic tabletops is relevant to both visualization and engineering. To understand which techniques are better suited to this activity, we implemented five different techniques based on the literature. Four are mid-air and one relies on multi-touch gestures. Our setup combines affordable non-intrusive tracking with a multi-touch stereo tabletop, providing head and hands tracking, improving depth perception and seamless interactions above the table. We conducted a user evaluation whose results suggest that mid-air interactions, combining direct manipulation with six degrees of freedom for the dominant hand, are the most satisfying and efficient.
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