Design of Co-existing space by Shoji interface showing Shadow
How can we develop a virtual space to support for co-sharing Ba between remote locations'? Current activities on developing various types of system to achieve this problem have been remarkably advanced, including CAVE, HyperMirror. TWISTER etc.. (Cruz-Neira. 1993; Morikawa, 1998; Kunita, 2001). However, since these systems are based on a design of virtual cosharing space in a separatable manner between the subject (yourself) and the object (your communication partner), a seamless merging between a real space and virtual co-sharing space is hardly accomplished. In order to solve these drawbacks, present study introduces a novel communication system, specifically aiming on shadows of human being or materials reflecting on Shoji screen to create Ba. Principle background of such development is based on facts that shadow itself possesses a powerful media function to express its existence and shadows cannot be separated from their origins. Moreover, since Shoji screen (Japanese traditional sliding screen made of wooden frameworks and rice paper pasted over the framework) can transmit a light, external activity/situation (on other side of Shoji screen) can be easily imagined and judged by internal side (this side of Shoji screen) through observing shadows. Peoples living in Japan must have similar experiences. Accordingly, co-existing Ba can be created between remote distances by combing Shoji screens and shadows revealing thereon.