In road bicycle races, advanced skills are needed to traverse downhill corners quickly and safely. A previous study revealed that in specific experimental corners, some beginners tend to lean their bikes more compared to experts. Therefore, in seeking to develop a support method for improving rider skill in controlling bike position, the authors aimed to design a system that indicates to users the positions of their bikes to lean it at the appropriate inclination when making turns. First, we determined the corner starting points using the RTK (Real Time Kinematic) positioning system. Then, we calculated the theoretical inclination and compared this to the inclination practiced by an expert. The experiment with this system showed that the expert started leaning the bike approximately 5 m short of a corner’s starting point with the speed maintained at approximately 25 km/h, with some correlation found between the theoretically ideal degree of inclination and the expert’s actual inclination.
Many shared-space communication systems have underdeveloped to share a spatial bodily interaction between been proposed which support bodily actions, such as eye gaze local and remote places. and instruction, among remote people. However, the method to For this problem, the authors have proposed a novel idea share a three-dimensional bodily action in physical space with on "communication-support by use of a tool", and have remote people has not been explored sufficiently. In this paper, developed a shared-space method which enables a user to we propose a novel method of a shared-space communication to move remote objects by operating a local rotatable disk which support to bridge over remote two tabletops visually and to synchronizes with remote rotatable disk [6].share bodily action among remote people. To achieve this aim, aIn this research, we especially focused on the problem of video image of remote tabletop is required to be shared with tial instrch, w e objects in focal an the ples. each other. A display and an interface are also needed for spatialinstructionstomoveobjectsinlocalandremoteplaces.reflecting a remote bodily action in a local space consistently. We, then, proposed to create a mutual place by connecting a Consequently, the front screen, on which a video image of a local place to the remote place in a face-to-face manner remote space including a tabletop is projected to connect through a partition. This is quite different from the tableside visually, is installed aslope on a table. We developed conventional systems by which a mutual place is created by also a Virtual Extensible Tool Interface which supports visual overlapping a remote place over a local place in a specified interactions including pointing to and touching a physical object area. And to support bodily interactions at physical places, a in remote space by representing virtual extensive tool to a *-remote space. Experiments on bodily interactions between local metod propsey u t ae and remote people demonstrated that the extensible tool developedlpreviously [7].interface can support bodily interactions with a remote partnerThe following sections describe the system structure, including instructing to a remote physical object in three experiments on remote interactions, and discussion on dimensions. Moreover, the results indicate clearly that the features of the system. participants felt as if they were touching the remote table. Thus, our system possesses a potential to support a remote co-creative II. DESIGN communication including a physical interaction through tools, In order to provide instructions to a remote object from and it is promising.
To support cocreative communication between people who are in separate, remote locations, embodied communication is crucial and a common place for communication should be established. This article proposes an idea to integrate remote, physically restricted places into a shared virtual space to bridge these remote places and to describe interface systems for cocreative communication. To show a typical example of cocreative communication with a high degree of freedom for bodily actions, this study focused on brick-building play, in which people are free to construct structures spatially with physical objects. For remote collaborative communication including modeling with physical bricks at each physical place, two interface systems were designed: the brick-modeling interface system and the brick-reader glove interface system. The brick-modeling interface system makes it possible for users to act out others' brick plays with physical bricks in the remote places and in shared virtual space in real time. The brick-reader glove interface system enables users to act out the modeling process with virtual bricks and virtual avatars of both remote users in the shared virtual space. The experiment clearly suggests that these interface systems are useful for creating a shared virtual space and for supporting collaborative work in three dimensions with a sense that the remote people were together in the same place.
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