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Why Use a 2-D Cursor in a 3-D World?

By R&D Editors | August 10, 2015

Researchers at the University of Montreal have developed techniques that enable computer cursors to interact in 3-D in single or multiuser, local or remote collaboration scenarios. The system is not so much about turning Word into an IMAX experience as offering designers an opportunity to navigate through and modify their creations manipulating 3-D objects with 3-D interactions. Courtesy of Hybridlab, Université de MontréalResearchers at the University of Montreal have developed techniques that enable computer cursors to interact in 3-D in single or multiuser, local or remote collaboration scenarios. The system, unveiled at the SIGGRAPH 2015 Conference in Los Angeles, is not so much about turning Word into an IMAX experience as offering designers an opportunity to navigate through and modify their creations manipulating 3-D objects with 3-D interactions.

“Our new technology challenges the notion of what a cursor is and does,” explained lead researcher Professor Tomás Dorta, of the university’s School of Design. “The cursor becomes a drawing and controlling plane. The techniques we’re unveiling today involves using a tablet to control the cursor, but as it does not necessarily rely on external tracking of the user’s movements, eventually other devices could be used, such as smart phones or watches.”

What does control plane mean? “We use a Butterfly-net analogy to explain how the cursor selects objects in space — the users simply sweep the 3-D cursors through,” Dorta said. “For the manipulations of objects, the users can use gestures and movements such as pinching and orientation.” The cursor is in fact being demonstrated within the researchers’ Hyve-3D design system, a full scale immersive 3-D environment that enables users to create drawings on hand-held tablets, which can then be manipulated on the tablets to create a 3-D design within the space. As the designers are immersed in their work, for example designing a living room, they can test different furniture options according to the scale and even work on the interior detailing. The immersive images are the result of an optical illusion created by a high-resolution projector, a specially designed five-meter-diameter spherically concave fabric screen and a dome mirror projecting the image onto the screen. Specialized techniques render the 3-D scene onto a spherical projection in real-time.

Univalor, the university’s technology commercialization unit, is supporting the market launch of the Hyve-3-D system and the 3-D cursor, via the startup Hybridlab. Several patents are pending. “Beyond its utility for sketching, we believe the 3-D cursor has applications in a wide range of fields, such as architectural design, medical imaging and, of course, computer games. This isn’t a gimmicky rebirth of the cursor, it’s about rethinking how humans interact with computers as part of the creative process,” Dorta said.

Citation: Tomas Dorta, Gokce Kinayoglu, and Michael Hoffmann. 2015. Hyve-3D and rethinking the “3D cursor”: unfolding a natural interaction model for remote and local co-design in VR. In SIGGRAPH 2015: Studio (SIGGRAPH ’15). ACM, New York, NY, USA, Article 43, 1 pages. DOI=10.1145/2785585.2785586.

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