Logo des Repositoriums

Auflistung nach Schlagwort "human computer interaction"

1 - 8 von 8
  • Konferenzbeitrag
    Augmented Reality Based Recommending in the Physical World
    (Mensch und Computer 2018 - Workshopband, 2018) Álvarez Márquez, Jesús Omar; Ziegler, Jürgen
    Recommender systems have received the attention of the scientific community for a long time now and they have become a daily tool for internet users. Nonetheless, they are not commonly applied to physical settings, where having access to recommendations could be of great benefit, specially when combined with item comparison capabilities. Due to the latest augmented reality technology advances, it is possible to bring these concepts together. An intuitive action like visually comparing two products could be enhanced by 3D cues and suggestions. In such terms, we discuss the possibilities to improve the item exploration and decision-making stages of the recommending process by providing item comparison supported by 3D augmentations, offering a novel contribution to both augmented reality and recommender systems domains.
  • Zeitschriftenartikel
    Best low-cost methods for real-time detection of the eye and gaze tracking
    (i-com: Vol. 23, No. 1, 2024) Khaleel, Amal Hameed; Abbas, Thekra H.; Ibrahim, Abdul-Wahab Sami
    The study of gaze tracking is a significant research area in computer vision. It focuses on real-world applications and the interface between humans and computers. Recently, new eye-tracking applications have boosted the need for low-cost methods. The eye region is a crucial aspect of tracking the direction of the gaze. In this paper, several new methods have been proposed for eye-tracking by using methods to determine the eye area as well as find the direction of gaze. Unmodified webcams can be used for eye-tracking without the need for specialized equipment or software. Two methods for determining the eye region were used: facial landmarks or the Haar cascade technique. Moreover, the direct method, based on the convolutional neural network model, and the engineering method, based on distances determining the iris region, were used to determine the eye’s direction. The paper uses two engineering techniques: drawing perpendicular lines on the iris region to identify the gaze direction junction point and dividing the eye region into five regions, with the blackest region representing the gaze direction. The proposed network model has proven effective in determining the eye’s gaze direction within limited mobility, while engineering methods improve their effectiveness in wide mobility.
  • Zeitschriftenartikel
    Design and implement a mobile-based system to teach traffic signs to illiterate people
    (i-com: Vol. 21, No. 3, 2022) Alfayez, Zainab Hameed
    Nowadays, most information and communication technologies target literate users and neglect the 800 million illiterate individuals around the world. Although there have been several attempts to develop systems that help illiterate people and try to reduce the digital gap between them and those who are literate, it is still challenging to find accessible systems for illiterate people. This research aims to reduce the digital gap between illiterate and literate people in Iraq through developing a mobile application for learning traffic signs. Firstly, a requirement elicitation study was conducted to explore a set of design considerations and build an accessible interface for illiterate people. The study resulted in several design principles, such as using voice instructions, focusing on graphic content, and using the local language. Then, the mobile application was developed based on these design principles. Finally, an evaluation study was conducted to measure the usability of the developed application. The results revealed that the built application is efficient and effective, and the users were extremely satisfied in several aspects, such as easy usage and learnability, and declared that they would use it in the future and recommend it to others.
  • Konferenzbeitrag
    Design guidelines for micro information radiators to increase seniors' safety in urban space
    (Mensch und Computer 2020 - Tagungsband, 2020) Stojko, Laura; Fietkau, Julian; Koch, Michael
    Senior citizens face challenges during activities in urban space. To help and motivate them pursuing outside activities, we propose a network of micro information radiators to increase their feeling of safety. In this paper we first collect guidelines and relevant aspects for the design of micro information radiators. Then we summarize our own experiences from a project designing smart urban objects – particularly giving an overview of design guidelines for input and output interaction of micro information radiators.
  • Konferenzbeitrag
    Intelligent Gaze-based Interaction
    (Mensch und Computer 2024 - Workshopband, 2024) Eggenkemper, Florian
    Many approaches tried to make the traditional input method of keyboard and mouse more ergonomically pleasant to use or to exchange the used hardware. One of those approaches is the use of eye tracking, which tries to solve many of the efficiency and health problems by using gaze as input. One key challenge with those systems is the imprecision of eye tracking hardware, resulting from hardware as well as physiological limitations. The main goal of this research work is to create a system, that improves the accuracy of gaze-based input devices on an application level.
  • Konferenzbeitrag
    „Miss Understandable“ - Eine Studie zur Aneignung von Sprachassistenten und dem Umgang mit Fehlinteraktionen
    (Mensch und Computer 2020 - Tagungsband, 2020) Pins, Dominik; Boden, Alexander; Essing, Britta; Stevens, Gunnar
    Diese Studie untersucht die Aneignung und Nutzung von Sprachassistenten wie Google Assistant oder Amazon Alexa in Privathaushalten. Unsere Forschung basiert auf zehn Tiefeninterviews mit Nutzern von Sprachassistenten sowie der Evaluation bestimmter Interaktionen in der Interaktions-historie. Unsere Ergebnisse illustrieren, zu welchen Anlässen Sprachassistenten im heimischen Umfeld genutzt werden, welche Strategien sich die Nutzer in der Interaktion mit Sprachassistenten angeeignet haben, wie die Interaktion abläuft und welche Schwierigkeiten sich bei der Einrichtung und Nutzung des Sprachassistenten ergeben haben. Ein besonderer Fokus der Studie liegt auf Fehlinteraktionen, also Situationen, in denen die Interaktion scheitert oder zu scheitern droht. Unsere Studie zeigt, dass das Nutzungspotenzial der Assistenten häufig nicht ausgeschöpft wird, da die Interaktion in komplexeren Anwendungsfällen häufig misslingt. Die Nutzer verwenden daher den Sprachassistenten eher in einfachen Anwendungsfällen und neue Apps und Anwendungsfälle werden gar nicht erst ausprobiert. Eine Analyse der Aneignungsstrategien, beispielsweise durch eine selbst erstellte Liste mit Befehlen, liefert Erkenntnisse für die Gestaltung von Unterstützungswerkzeugen sowie die Weiterentwicklung und Optimierung von sprachbasierten Mensch-Maschine-Interfaces.
  • Zeitschriftenartikel
    Time related changes of affective dimensions and distinct emotions in the interaction with a tablet PC
    (i-com: Vol. 21, No. 3, 2022) Brandenburg, Stefan; Spang, Robert
    Examining peoples’ affect and emotions over time and their effects on peoples’ behavior are ongoing endeavors in human-computer-interaction (HCI) research. This paper reports an experiment in which participants watched either positive or negative film clips on a tablet PC to enter a positive or negative affective state. Successively, they accomplished four basic system interaction tasks like changing fonts of an app on the same device. Results show that, in line with previous studies, peoples’ general valence ratings quickly reverted to neutral when starting the task accomplishment. At the level of distinct positive emotions, participants’ ratings of hope, joy, and serenity decreased after watching negative film clips. Moreover, amusement, love, and serenity decreased during the interaction with the tablet PC. Amongst the negative emotions, only ratings of sadness increased after watching negative film clips and decreased again after the interaction. Also, participants in the positive film group were slower in executing one of the basic tasks than participants in the negative film group. The findings suggest that only few emotions may be causal for peoples’ ratings of general affect. Results also indicate that negative emotions may help people executing standard tasks, in contrast to positive emotions. Implications for HCI design and research are discussed.
  • Konferenzbeitrag
    Untersuchung von Kreismenüs für die Systemkontrolle in der Virtuellen Realität
    (Mensch und Computer 2019 - Tagungsband, 2019) Mundt, Martin; Mathew, Tintu
    Die wachsende Verbreitung von Virtual Reality (VR) ermöglicht die Adressierung von Nutzern, die auf ausgeprägtes Vorwissen im Bereich traditioneller desktopbasierter Anwendungen und damit verbundener zweidimensionaler Interaktionstechniken zurückgreifen können. Von der Übertragung dieser Techniken in den dreidimensionalen Interaktionsraum profitieren insbesondere VR-Anwendungen, die durch umfangreiche Möglichkeiten zur Systemkontrolle gekennzeichnet werden. Das Hauptaugenmerk dieser Arbeit liegt auf der Entwicklung von Kreismenüs für die VR. Entstanden sind dabei vier verschiedene Implementationen: Pick-Ray (PR) und Pick-Hand (PH) mit Unterstützung von jeweils sechs Freiheitsgraden (6-DoF) zur Selektion sowie Hand-Rotation (HR) und Stick-Rotation (SR) mit jeweils einem Freiheitsgrad (1-DoF). Zur Überprüfung des Einflusses der verschiedenen Implementationen auf Selektionszeit, Fehlerrate, Nutzererlebnis, Gebrauchstauglichkeit und Präsenzempfinden wird die Konzeption einer entsprechenden Nutzerstudie diskutiert.