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Virtual Diorama (VD) interface is a new Mixed-Reality interface for mobile device, which enables users spread in large outdoor environment to share their point of interest (POI) among users. The outdoor environment is modeled in CG and POI is attached onto the CG model. Users will see POI by maneuvering the CG model (VD model). In this paper, we conduct user study and experiment for usability of our VD interface for better recognition of POI location. We compare two repositioning methods of VD model; Free shot and Dolly-round/Crane (D/C) shot. We also evaluate the usability of superimposing VD model onto the real image. As a result, D/C shot is more suitable than Free shot on our VD interface. We also found that about half of the subjects prefer superimposing of VD model onto real image.

In this paper we consider the development of a museum guide robot that has both autonomous and remotely controlled features. We focus on the capabilities such a robot could have to help focus the attention of a visitor on an object or artefact. Inspired by studies of social interaction, which investigate whether the robot could deploy "restarts" and "pauses" at certain moments in its talk to first elicit the visitor's attention/gaze towards the robot. We report an experiment where we deployed such a robot to interact with real visitors to a science museum. These experiments show that such a strategy does seem to have a significant impact on obtaining the visitor's gaze.