Publicaties

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Streamlining pre- and intra-hospital care for patients with severe trauma Vrije Universiteit Brussel

Dan Longrois, Marc Maegele, Hugues Bersini, George Crooks, Ives Hubloue, Ann Nowe, Peter C Rimensberger, Marc Sabbe, Jonathan Tilsed, Jef Vandemeulebroucke, et al.

PURPOSE: Major trauma remains a significant cause of morbidity and mortality in the developed and developing world. In 2013, nearly 5 million people worldwide died from their injuries, and almost 1 billion individuals sustained injuries that warranted some type of healthcare, accounting for around 10% of the global burden of disease in general. Behind the statistics, severe trauma takes a major toll on individuals, their families and ...

Review of Semantic-Free Utterances in Social Human-Robot Interaction Vrije Universiteit Brussel

Selma Yilmazyildiz Kayaarma, Robin Read, Tony Belpaeme, Werner Verhelst
As a young and emerging field in social human–robot interaction (HRI), semantic-free utterances (SFUs) research has been receiving attention over the last decade. SFUs are an auditory interaction means for machines that allow emotion and intent expression, which are composed of vocalizations and sounds without semantic content or language dependence. Currently, SFUs are most commonly utilized in animation movies (e.g., R2-D2, WALL-E, Despicable ...

Gibberish speech as a tool for the study of affective expressiveness for robotic agents Vrije Universiteit Brussel

Selma Yilmazyildiz Kayaarma, Werner Verhelst, Hichem Sahli
Recent technological advancements bring virtual agents, avatars, and social robotic characters into our daily lives. These characters must acquire the ability to express (simulated) emotions vocally and gesturally. In the vocal channel, Natural Language Interaction technologies today have some limitations when used in real-world natural environments and the models of expressivity of text to speech synthesis engines are not yet mature enough. To ...

Relevance Units Machine based Dimensional and Continuous Speech Emotion Prediction Vrije Universiteit Brussel

Fengna Wang, Hichem Sahli, Junbin Gao, Dongmei Jiang, Werner Verhelst
Emotion plays a significant role in human-computer interaction. The continuing improvements in speech technology have let to many new and fascinating applications in human-computer interaction, context aware computing and computer mediated communication. Such applications require reliable online recognition of the user's affect. However most emotion recognition systems are based son speech via an isolated short sentence or word. We present a ...

Automated Speech Rate Measurement in Dysarthria Vrije Universiteit Brussel Universiteit Antwerpen

Heidi Martens, Tomas Dekens, Gwen Van Nuffelen, Lukas Latacz, Werner Verhelst, Marc De Bodt
In this study, a new algorithm for automated determination of speech rate (SR) in dysarthric speech is evaluated. We investigated how reliably the algorithm calculates the SR of dysarthric speech samples when compared with calculation performed by speech-language pathologists.

Robust speaker localization for real-world robots Vrije Universiteit Brussel

Georgios Athanasopoulos, Werner Verhelst, Hichem Sahli
Autonomous human–robot interaction ultimately requires an artificial audition module that allows the robot to process and interpret a combination of verbal and non-verbal auditory inputs. A key component of such a module is the acoustic localization. The acoustic localization not only enables the robot to simultaneously localize multiple persons and auditory events of interest in the environment, but also provides input to auditory tasks such as ...

Audiovisual speech synthesis: An overview of the state-of-the-art Vrije Universiteit Brussel

Wesley Mattheyses, Werner Verhelst
We live in a world where there are countless interactions with computer systems in every-day situations. In the most ideal case, this interaction feels as familiar and as natural as the communication we experience with other humans. To this end, an ideal means of communication between a user and a computer system consists of audiovisual speech signals. Audiovisual text-to-speech technology allows the computer system to utter any spoken message ...

Framework for Combination Aware AU Intensity Recognition Vrije Universiteit Brussel

Isabel Gonzalez, Meshia Cédric Oveneke, Dongmei Jiang, Werner Verhelst, Hichem Sahli
We present a framework for combination aware AU
intensity recognition. It includes a feature extraction approach
that can handle small head movements which does not require
face alignment. A three layered structure is used for the AU
classification. The first layer is dedicated to independent AU
recognition, and the second layer incorporates AU combination
knowledge. At a third layer, AU dynamics are handled based ...

Natural Emotion Elicitation for Emotion Modeling in Child-Robot Interactions Vrije Universiteit Brussel

Weiyi Wang, Georgios Athanasopoulos, Selma Yilmazyildiz Kayaarma, Georgios Patsis, Valentin Enescu, Hichem Sahli, Werner Verhelst, Antoine Hiolle, Matthew Lewis, Lola Canamero, et al.
Obtaining spontaneous emotional expressions is the very first and vital step in affective computing studies, for both psychologists and computer scientists. However, it is quite challenging to record them in real life, especially when certain modalities are required (e.g. 3D representation of the body). Traditional elicitation and capturing protocols either introduce the awareness of the recording, which may impair the naturalness of the ...