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PRECIOUS! Out-of-reach selection using iterative refinement in VR

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PubDate: April 2017

Teams: Universidade de Lisboa

Writers: Daniel Mendes; Daniel Medeiros; Eduardo Cordeiro; Maurício Sousa; Alfredo Ferreira; Joaquim Jorge

PDF: PRECIOUS! Out-of-reach selection using iterative refinement in VR

Abstract

Selecting objects outside user’s arm-reach in Virtual Reality still poses significant challenges. Techniques proposed to overcome such limitations often follow arm-extension metaphors or favor the use of selection volumes combined with ray-casting. Nonetheless, these approaches work for room sized and sparse environments, and they do not scale to larger scenarios with many objects. We introduce PRECIOUS, a novel mid-air technique for selecting out-of-reach objects. It employs an iterative progressive refinement, using cone-casting to select multiple objects and moving users closer to them in each step, allowing accurate selections. A user evaluation showed that PRECIOUS compares favorably against existing approaches, being the most versatile.

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