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Figure 1: A backyard scene rendered with a 2k × 2k shadow map and 5 × 5 Gauss filtering using (from left to right, statistics include mip-map memory): CSMs ESMs require 8× less memory than CSMs and have less light leaking at contact points while their filtering quality is almost indistinguishable. Like CSMs, ESMs also avoid the high frequency light leaking(More)
Virtual environments and other applications of computer-generated scenes are emerging. This increases the demand for tools for efficient creation of the virtual worlds and interaction with the components in the virtual world. Introduction of immersiveness in the modeling process seems promising, but a number of issues related to immersive modeling still(More)
This paper presents FluidPaint, a novel digital paint system using real wet brushes. A new interactive canvas, accurately registering brush footprints and paint strokes in high precision has been developed. It is based on the real-time imaging of brushes and other painting instruments as well as the real-time co-located rendering of the painting results.(More)
Designers and developers of virtual environments have to consider that providing adaptation in virtual environments is important to comply with users' different characteristics. Due to the many possibilities of adaptation that a designer can think of, it is necessary to support the integration of adaptation in the application in a rapid and practical way.(More)
omputer-supported collaborative work over networks has become an important research topic over the past few years, including in the Visinet project. The Visinet participants conducted trials of new CSCW methods based on virtual representation and virtual reality techniques over trans-European ATM networks. Designers, architects, city planners, and engineers(More)
In most existing immersive virtual environments, 3D geometry is imported from external packages. Within ICOME (an Immersive Collaborative 3D Object Modelling Environment) we focus on the immersive construction of 3D geometrical objects within the environment itself. Moreover, the framework allows multiple people to simultaneously undertake 3D modelling(More)
The use of handheld computers as a tool to enrich the museum experience has found its way into many museums, opening up new possibilities to increase the attractiveness of museum visits, especially for youngsters. We developed a mobile guide framework that supports the creation of mobile guides and adheres to social-constructivist principles of learning.(More)
In this paper we report on our work to develop a novel input technique for a digital paint system. Using a brush with infrared (IR) light emitting fibers, we were able to create a natural paint interface on an interactive table. This IR-brush adds two important properties to our paint environment: haptic feedback and an accurate brush footprint. The(More)