This thesis is concerned with shared virtual environments for collaborative work. An important aspect of shared virtual environments is the avatar, the representation of the user in the virtual world. The proper design of the avatar has been the subject of considerable research, aimed at allowing the avatars to express as much as possible of human non-verbal communication and, as it were, tie t...

This work deals with modeling in immersive virtual environments. We present MuscleAssemblyLab (MAL), a tool to create musculo-skeletal layers for virtual humanoids. With modular interaction metaphors it supports various inputand output-devices ranging from classical desktop systems to virtual reality hardware. This enabled us to conduct a comparative user study between non-immersive and immersi...

This paper introduces the use of Augmented Reality as an immersive analytical tool in the physical world. We present Situated Analytics, a novel combination of real-time interaction and visualization techniques that allows exploration and analysis of information about objects in the user's physical environment. Situated Analytics presents both situated and abstract summary and contextual inform...

The paper focuses on simulation tools for parallel kinematics using Augmented Reality. AR is used in the design of new equipment for reasons of clarity in testing the physical model of parallel kinematics (linking real and virtual scene model). The article describes the process of the model creation and its further processing. The article focuses on other possible solutions which could be benef...

In this paper the usability testing of an Augmented Reality system for the Hypervideo Platform, used to simulate augmented reality on Interactive TVs thanks to the hypervideo concept, is presented: a heuristic evaluation was conducted for the creation module, while a within subjects experiment was performed for the visualization module, comparing the previous TV-only system with a second-screen...

This paper proposes a design pattern language applicable to mobile mixed reality games. While on the one hand the language covers direct game mechanics and therefore game design considerations, it also aims to provide similar for other aspects of mobile mixed reality games, namely authoring, content creation, interfaces, orchestration as well as testing and logging. Eleven patterns based on the...

We present a crowd simulation that captures some of the semantics of a specific scene by partly reproducing its motion behaviors, both at a lower level using a steering model and at the higher level of goal selection. To this end, we use and generalize a steering model based on linear velocity prediction, termed LTA. From a goal selection perspective, we reproduce many of the motion behaviors o...

Virtual Harlem is a virtual reality reconstruction of Harlem, New York, during the 1920s. It was designed to immerse students of the Harlem Renaissance directly in the historical context of the literature of that period. The goal of this prototype is to develop rich, interactive, and narrative learning experiences to augment classroom activities for students in the humanities. This paper descri...

— Developer, manager and user feedback is needed to optimize products. Besides the basic Software qualities – usability and user experience are important properties for improving your product. Usability is well known and can be tested with e.g. a usability test or an expert review. In contrast user experience describes the whole impact a product has on the end-user. The timeline goes from befor...

Modern organizations face many significant challenges because of turbulent environments and a competitive global economy. Among these challenges are the use of information and communication technology (ICT), a multicultural workforce, and organizational designs that involve global virtual teams. Ad hoc teams create both opportunities and challenges for organizations and many organizations are t...