Virtual studio technology plays an important role for modern television productions. Blue-screen matting is a common technique for integrating real actors or moderators into computer generated sceneries. Augmented reality offers the possibility to mix real and virtual in a more general context. This article proposes a new technological approach for combining real studio content with computer-ge...

An eye-contact display and camera system for video telephony is described in which a video camera looks through a conventional active matrix LC display. By removing the rear polarizer from the display, the camera can look through the display without seeing the information on the display. Display/camera multiplexing and color are achieved via a polarized projection illumination system. Color tri...

This application report describes typical architectures for optical systems employing a single DMD device for projection applications, primarily for small portable projectors. Pros and cons for each architecture are discussed in general terms. Frontand rear-screen applications are discussed briefly. Techniques and trades for maximizing critical system performance parameters, defined by the appl...

Today’s Virtual Reality applications require a high degree of immersion. This may be achieved by using a CAVE incorporating powerful 3D computer graphics workstations, panoramic multiple screen displays and projection walls, stereovision and interaction devices such as trackers and data gloves. This article describes Virtual Reality applications from the fields of scientific visualization in me...

This paper describes an experimental system for classroom-based tele-education based on IP multicast. It gives an overview of the system and describes how the system is designed to avoid a single central point of failure. The system supports locally controlled video mixing, provides simple floor arbitration without a central controller, and finally implements a new wavelet-based video compressi...

We introduce jReality, a Java library for creating real-time interactive audiovisual applications with three-dimensional computer graphics and spatialized audio. Applications written for jReality will run unchanged on software and hardware platforms ranging from desktop machines with a single screen and stereo speakers to immersive virtual environments with motion tracking, multiple screens wit...

1 Jacques Lacan had theorized that as human beings, "we have no power of our own, we construct a self in fantasy to make life bearable." 1 Fantasy becomes the primary domain for us to console ourselves, since, according to Slavoj Zizek, "fantasy space functions as an empty surface, as a kind of screen for the projection of desires: the fascinating presence of its positive contents does nothing ...

“Passages” is an immersive, multimodal, user-controlled artistic interface. The installation consists of a 3D interactive virtual environment, stereoscopic projection screen, and a specialized haptic interface device (vibrotactile dataglove). Both the glove and the users’ glasses are tracked by a long-range Polhemus electromagnetic sensor in real time, allowing kinesthetic exploration of the vi...

In projection-based virtual reality systems, such as the CAVE, users can observe immersive stereoscopic images. Most of the images, however, are synthesized from polygonal models of the virtual world. This is because the resolution of the real images of the physical world is not enough for large screen systems. In this paper, four cameras are utilized to improve the quality of wide-angle stereo...