3D mid-air manipulation techniques above stereoscopic tabletops

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]. ISIS3D Workshop in conjunction with ITS’13, October 6, 2013, Scotland, UK. Copyright c © 2013 ACM...$15.00. DOI string from ACM form confirmation Abstract Stereoscopic tabletops collocate both user interaction and visualization spaces, fostering more natural freehand interaction metaphors to manipulate 3D virtual content. Thanks to a non-intrusive tracking solution, based on depth cameras, users can interact and manipulate virtual objects using both hands. In this position paper, we perform a comparative study of one multi-touch and four mid-air interaction techniques assigning the seven degrees of freedom (translation, rotation and uniform scaling) of 3D manipulation, symmetrically or asymmetrically between both hands.