Gao, LeiBai, HuidongPiumsomboon, ThammathipLee, Gun A.Lindeman, Robert W.Billinghurst, MarkRobert W. Lindeman and Gerd Bruder and Daisuke Iwai2017-11-212017-11-212017978-3-03868-038-31727-530Xhttps://doi.org/10.2312/egve.20171344https://diglib.eg.org:443/handle/10.2312/egve20171344We present a prototype Mixed Reality (MR) system with a hybrid interface to support remote collaboration between a local worker and a remote expert in a large-scale work space. By combining a low-resolution 3D point-cloud of the environment surrounding the local worker with a high-resolution real-time view of small focused details, the remote expert can see a virtual copy of the local workspace with an independent viewpoint control. Meanwhile, the export can also check the current actions of the local worker through a real-time feedback view. We conducted a pilot study to evaluate the usability of our system by comparing the performance of three different interface designs (showing the real-time view in forms of 2D first-person view, a 2D third-person view and a 3D point cloud view). We found no difference in average task performance time between the three interfaces, but there was a difference in user preference.Humancentered computingMixed/augmented realityVirtual realityCollaborative and social computing design and evaluation methods10.2312/egve.2017134487-95