Hartwig Holzapfel

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In this paper we present our ongoing work in building technologies for natural multimodal human-robot interaction. We present our systems for spontaneous speech recognition, multimodal dialogue processing and visual perception of a user, which includes the recognition of pointing gestures as well as the recognition of a person's head orientation. Each of(More)
In this paper, we present our work in building technologies for natural multimodal human–robot interaction. We present our systems for spontaneous speech recognition, multimodal dialogue processing, and visual perception of a user, which includes localization, tracking, and identification of the user, recognition of pointing gestures, as well as the(More)
This paper presents an architecture for fusion of multimodal input streams for natural interaction with a humanoid robot as well as results from a user study with our system. The presented fusion architecture consists of an application independent parser of input events, and application specific rules. In the presented user study, people could interact with(More)
Emotions are very important in human-human communication but are usually ignored in human-computer interaction. Recent work focuses on recognition and generation of emotions as well as emotion driven behavior. Our work focuses on the use of emotions in dialogue systems that can be used with speech input or as well in multi-modal environments.This paper(More)
In this paper we present our current work on a tight coupling of a speech recognizer with a dialog manager and our results by restricting the search space of our grammar based speech recognizer through the information given by the dialog manager. As a result of the tight coupling the same lingustic knowledge sources can be used in both, speech recognizer(More)
In this work we propose a procedure model for rapid automatic strategy learning in multimodal dialogs. Our approach is tailored for typical task-oriented human-robot dialog interactions, with no prior knowledge about the expected user and system dynamics being present. For such scenarios, we propose the use of stochastic dialog simulation for strategy(More)
Future life pictures humans having intelligent humanoid robotic systems taking part in their everyday life. Thus researchers strive to supply robots with an adequate artificial intelligence in order to achieve a natural and intuitive interaction between human being and robotic system. Within the German Humanoid Project we focus on learning and cooperating(More)