Jarkko Vatjus-Anttila

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This poster describes the implementation of a mobile client, called <i>Chiru</i>, for the realXtend extensible Network Virtual Environment. The paper describes the chiru client which can cope with network connection status and failures, multiple world connections and User Interface elements based on Qt/QML. The prototype is demonstrated on a mobile tablet(More)
In this paper, communication architecture for a P2P-enhanced virtual environment (VE) client in a web browser is proposed. The communication architecture relies on recent and ongoing standardization efforts as well as novel research work in defining the building blocks that are required for implementing adaptive and scalable solutions for VEs. In addition,(More)
This paper presents a mathematical model for predicting power consumption of a mobile device when it is rendering 3D graphics. The model is based on 3D primitives (triangles, render batches, texels), and hence is hardware agnostic. With the model, a complexity of any given 3D scene can be predicted already at a production phase without access to the actual(More)
Extensible 3D virtual spaces and their services are often too heavy for a mobile device to handle. The burden caused by such services is divided between extensive amounts of content, which need to be downloaded prior to using the service, and the complexity of the graphical reproduction process (rendering). In this paper, it is shown how texture(More)
In this paper, we present a space-time visualization to provide city’s decision-makers the ability to analyse and uncover important “city events” in an understandable manner for city planning activities. An interactive Web mashup visualization is presented that integrates several visualization techniques to give a rapid overview of traffic data. We(More)
Virtual spaces that host hundreds or even thousands of users create enormous amounts of traffic, which usually is broadcasted to the entire environment and congests the network medium very quickly. In this paper, a novel interest management (IM) algorithm called EA is presented and evaluated. EA is based on an existing IM algorithm, called A which uses(More)
Collaborative 3D virtual spaces and their services are often too heavy for a mobile device to handle. The burden of such services is divided between extensive amounts of data, which need to be downloaded prior to using the service, and the complexity of the resulting graphical rendering process. In this paper, a proxy based architecture for collaborative(More)
This paper studies extensible network virtual environments from a mobile device perspective. In this context a mobile device is a power limited device, whose battery capacity, available connection speed, graphical computing power and performance are very limited and the screen size is highly variable. As a solution to enable extensible virtual world(More)