Nobuchika Sakata

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The wearable active camera/laser (WACL) allows the remote collaborators not only to independently set their viewpoints into the wearer's workplace but also to point to real objects directly with the laser spot. In this paper, we report a user test to examine the advantages and limitations of the WACL interface in remote collaboration by comparing a(More)
We propose a wearable active camera with laser pointer (WACL) as a human interface device for use in telecommunications. The WACL laser pointer is attached to the active camera-head and it can point a laser spot while elevating and panning the camera-head. In our system, a remote instructor can observe around the worker, who is wearing the WACL,(More)
The Wearable Active Camera/Laser-Pointer (WACL) is a body-worn tool equipped with a camera/laser head capable of pan/tilt control to assist field workers in remote collaboration. A remote expert can freely observe the real workplace and directly point at targets with a laser spot. In our previous studies, however, it was found that advanced visual assist(More)
We describe our 3-D museum guide system and the pilot study we did to evaluate it. The prototype system used in the pilot study uses a human positioning system based on dead reckoning, active RFIDs, and map matching. The system manages content consisting of 3-D maps, recommended routes, and Flash files to provide appropriate navigation information based on(More)
Nobuchika Sakata Human Interface Laboratory Division of Systems Science and Applied Informatics Osaka University, Japan Abstract In this research, we explore using pointing and drawing in a remote collaboration system. Our application allows a local user with a tablet to communicate with a remote expert on a desktop computer. We(More)
Video conferencing is becoming more widely used in areas other than face-to-face conversation, such as sharing real world experience with remote friends or family. In this paper we explore how adding augmented visual communication cues can improve the experience of sharing remote task space and collaborating together. We developed a prototype system that(More)
Wearable projectors have been extensively studied with a focus on miniaturization. However, stabilization of the projected images is critical, for otherwise the information cannot be read when the user walks or runs. This paper introduces two methods of stabilization for images projected on the user’s hand: optical stabilization and gyroscopic(More)
Drawing annotations on shared live video has been investigated as a tool for remote collaboration. However, if a local user changes the viewpoint of a shared live video while a remote user is drawing an annotation, the annotation is projected and drawn at wrong place. Prior work suggested manually freezing the video while annotating to solve the issue, but(More)
Under a remote collaboration demanding multiple fieldworkers, using a head-set interface composed from HMD and HMC in a situation of that only one wearable interface is allowed using in a field, there might be discrepancies in the transmission of instructions among the field workers and a remote expert because a worker without the interface of remote(More)
Maintaining personal space is important for person to lead a comfortable social life because an inappropriate interpersonal distance often renders discomfort; however, constantly maintaining an appropriate interpersonal distance is difficult. Controlling the visual distance---rather than the physical distance---solves this problem. Therefore, we propose an(More)