Coexistent space: toward seamless integration of real, virtual, and remote worlds for 4D+ interpersonal interaction and collaboration

Three worlds are integral to our daily life: the real world, virtual world, and remote world. In the paper, there is proposed coexistent space where networked users can communicate, interact, and collaborate together by exchanging 4D+ sensation, human intension, and emotion. The 4D+ sensation includes 3D vision, 3D sound, force and torque, touch, and movements. The coexistent space is generated by seamless integration of real, virtual, and remote worlds while networked users experience the feeling of coexistence through 4D+ bi-directional interaction. Initial software framework and experimental results for interaction between multiple remote users are shown successfully.