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Realism and plausibility of computer controlled entities in entertainment software have been enhanced by adding both static personalities and dynamic emotions. Here a generic model is introduced that allows findings from real-life personality studies to be transferred to a computational model. Adaptive behavior patterns are enabled by introducing dynamic event-based emotions. The advantages of this model have been validated using a four-way crossroad in a traffic simulation. Driving agents using the introduced model enhanced by dynamics were compared to agents based on static personality profiles and simple rule-based behavior. The results show that adding a dynamic factor to agents improves perceivable plausibility and realism.
Perception is one of the most important cognitive capabilities of an entity since it determines how an entity perceives its environment. The presented work focuses on providing cost efficient but realistic perceptual processes for intelligent virtual agents (IVAs) or NPCs with the goal of providing a sound information basis for the entities' decision making processes. In addition, an agent-central perception process should rovide a common interface for developers to retrieve data from the IVAs' environment. The overall process is evaluated by applying it to a scenario demonstrating its benefits. The evaluation indicates, that such a realistically simulated perception process provides a powerful instrument to enhance the (perceived) realism of an IVA's simulated behavior.
Rendering techniques for design evaluation and review or for visualizing large volume data often use computationally expensive ray-based methods. Due to the number of pixels and the amount of data, these methods often do not achieve interactive frame rates. A view direction based rendering technique renders the users central field of view in high quality whereas the surrounding is rendered with a level of detail approach depending on the distance to the users central field of view thus giving the opportunity to increase rendering efficiency. We propose a prototype implementation and evaluation of a focus-based rendering technique based on a hybrid ray tracing/sparse voxel octree rendering approach.
Vor dem Hintergrund knapper Ressourcen, dem zunehmendem Reha-Bedarf und der politischen Diskussion um eine demografische Anpassung der Reha-Budgets gewinnt der Nachweis der Ergebnisqualität medizinischer Reha-Leistungen weiter an zentraler Bedeutung (z. B. Haaf, 2005; Steiner et al., 2009). Die kontinuierliche und klinikvergleichende Überprüfung der Behandlungsergebnisse ist darüber hinaus ein wichtiger Baustein eines funktionierenden Qualitätsmanagements (Schmidt et al., in press). Sie ermöglicht ein "Lernen von den Besten" und führt zu organisatorischen Lernprozessen (Toepler et. al., 2010).