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Chontira Nimcharoen, Stefanie Zollmann, Jonny Collins, and Holger Regenbrecht. Is that me? - embodiment and body perception with an augmented reality mirror. In Adjunct Proceedings of the IEEE International Symposium for Mixed and Augmented Reality 2018 (To appear). 2018.


Virtual reality has been used intensively to study embodiment and body perception; in particular for research purposes in psychological domains. Virtual avatars are used to resemble users' appearance and to implement interactively simulated behaviour. An important requirement to experience the bodies in the virtual environment as realistic; is that users should feel embodiment; i.e. Ownership; Agency; Self-location/Presence. State-of-the-art capture and display technologies allow for extending virtual reality embodiment to the realm of augmented reality for higher efficacy---instead of seeing a virtual reality body one would see a captured; 3D representation of their own body naturally controlled by their real body movements within the context of the present real environment. However; it is unclear whether users would experience embodiment with their augmented reality avatar and whether findings from virtual reality targeting body perception can be replicated. Here we present an augmented reality system comprising a 3D point cloud capturing system (Microsoft Kinect) and an optical see-through head-mounted display (Microsoft HoloLens); both connected to a purpose-developed application displaying a user's body in a virtual 3D mirror embedded into the real environment. In a study with 24 participants; we evaluated embodiment and replicated parts of a virtual reality study on body weight perception as a proof of concept. Our findings show that users experience ownership and agency with the mirrored body and that body weight perception in virtual and augmented reality systems is similar.