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When establishing a visual connection between a virtual reality user and an augmented reality user, it is important to consider whether the augmented reality user faces a surplus of information. Augmented reality, compared to virtual reality, involves two -not one -planes of information: the physical and the virtual. We propose SelectVisAR, a selective visualisation system of virtual environments in augmented reality. Our system enables an augmented reality spectator to perceive a co-located virtual reality user in the context of four distinct visualisation conditions: Interactive, Proximity, Everything, and Dollhouse. We explore an additional two conditions, Context and Spotlight, in a follow-up study. Our design uses a human-centric approach to information filtering, selectively visualising only parts of the virtual environment related to the interactive possibilities of a virtual reality user. The research investigates how selective visualisations can be helpful or trivial for the augmented reality user when observing a virtual reality user. CCS CONCEPTS• Human-centered computing → Mixed / augmented reality; Virtual reality; Collaborative interaction.

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Figure 1: The three uni-directional Cross-Reality pinpointing techniques explored in the first study (from left to right): no visual feedback, audio only via voice clips; a highlight outlining the object (in white); and a three-dimensional arrow.Figure 2: Two of techniques explored in the second study in the context of bi-directional Cross-Reality pinpointing. Left -a pointing action from the tablet user, from the perspective of the user in VR. Inspired by Ibayashi et al. [12], we have added a pulse element that travels the scene and enables vibrotactile feedback when passing through the VR user. This enables she or he to be aware of this action even if facing some other direction. Right -a pointing action by the VR user (tracked via the handheld controllers), and how this is represented to the tablet user.