Titel: Comparing tabletop display interaction techniques: directness and integrality Instituut: Simon Fraser University Plaats: Vancouver, B.C. Land: Canada, V6B 5K3 Begindatum: 01-04-2006 Voltooid: Ja Verslag: http://hmi.ewi.utwente.nl/verslagen/afstudeer/KosterJacobjobFinalThesis.pdf Begeleider: Dirk Heylen Begeleider extern: T. Kirkpatrick Onderwerpen: Multimodal Interactions, Human factors

Beschrijving:

A tabletop display is an interactive computer display mounted into or projected on a real-world horizontal table surface. The usage of tabletop displays can benefit different applications, especially activities in collaborative work as tasks in office environments, such as planning schedules, drawing schematics or manipulating maps. Also in situations where various digital documents are used, such as PDF files, might benefit from the use of tabletop displays. This proposed research will investigate the influence of integrality and directness on human performance in three tabletop display interaction techniques. In direct interaction, the object and the user's hand are working in a collocated space, while in indirect interaction the location differs. In integral interaction, the attributes of the object that combine perceptually, are necessarily simultaneously modifiable, for example rotation and translation are modifiable simultaneously. Some other factors appear to have a strong effect on interaction techniques too, and therefore it is essential to untangle the influence of these factors. The first user study investigates these factors and focuses on the influence of precision, distance, directness and handle size. The second user study will compare directness and integrality, using results from the first user study. We compare three different interaction techniques which are presumed to have different integralities: Corner, Rotate 'N Translate and Two Point. Our study uses a motion capture system that is able to record 3D coordinates to a precision of about 1 mm in at least 72 frames per second. The tabletop surface is about 1.2 x 0.8 meter. The 3D coordinates allows us to perceive the user's hand position on the table and the distance from the table. The glove has LED's attached to it, to capture the position of the hand and fingers. An office table and a computer for capturing the data are used to complete the setting. The computer screen is projected on the table from above, in order to create an interactive tabletop. Capita Selectaopdracht Titel: Applying gestures in domestic appliances Instituut: University of Twente (HMI) Plaats: Enschede Land: Nederland Begindatum: 07-04-2004 Voltooid: Ja Verslag: http://hmi.ewi.utwente.nl/verslagen/capita-selecta/CS-Koster-Jacobjob.pdf Begeleider: Betsy van Dijk, Mariët Theune Onderwerpen: Multimodal Interactions, Human factors Beschrijving: Gestures are not often used to control domestic appliances in a modern household. This paper describes a research project on the current use of gestures in domestic appliances and possible usage in the future. First, a literature survey is done in different gesture input possibilities, also advantages and disadvantages are discussed. After that, a few current domestic appliances with their input possibilities are reviewed. To give a overview in the applied gesture field, a research in domestic appliances with the use of gestures is presented. Using the described input methods, new gesture control methods are introduced in the domestic field. A remote control with touchpad or capacitive field controls came out as an interesting device. A small qualitative user study is done with a concept 2D paper model of a remote control to evaluate its usability. Seven users from different ages executed tasks and a small questionnaire to get their opinions. It is concluded that a remote control with a touch sensitive interface in combination with a displayed remote control screen is preferred above the traditional remote control using push buttons.