Issues in an Image Capture System for TWISTER

In this paper we report the development of TWISTER [3][8] (Telexistence Wide-angle Immersive STEReoscope), which realize the concept of “Mutual Telexistence”. In contrast to conventional telexistence, where people in remote places can be appeared with a realistic sense of presence, in mutual telexistence, the figure of the observer him/herself can be displayed to remote users and all of the users can communicate as if they were in the same three-dimensional space. TWISTER is a cylindrical booth designed for mutual telexistence. It enables the user to view immersive and autostereoscopic images, and at the same time, it captures and reconstructs the image of the user inside with cameras positioned in-between the display unit. In previous reports on the development of TWISTER, we have introduced the development of display part [1]. In this report we discuss some methods to capture images of the user and render them in real time.