Florian Geyer

• Dr. rer. nat.
• University of Konstanz

We introduce Blended Interaction, a new conceptual framework that helps to explain when users perceive user interfaces as “natural” or not. Based on recent findings from embodied cognition and cognitive linguistics, Blended Interaction provides a novel and more accurate description of the nature of human–computer interaction (HCI). In particular, i...

In this paper we describe an experimental study investigating the use of bimanual and multi-finger input for grouping items spatially on a tabletop interface. In a single-user setup, we compared two typical interaction techniques supporting this task. We studied the grouping and regrouping performance in general and the use of bimanual and multi-fi...

In this paper we describe IdeaVis, a novel approach for supporting co-located sketching sessions. Our system is based on digital pen & paper for augmenting the traditional paper-based workflows of sketching sessions. An additional focus & context visualization is used to support creative facilitators in exploring and examining the design activity,...

Interactive spaces are ubiquitous computing environments for computer-supported collaboration that exploit and enhance the existing cognitive, physical and social skills of users or groups of users. The workshop aims at documenting and advancing the current state-of-the-art of co-located collaboration in interactive spaces and identifying research...

A research based on mixed-media design tools included developing AffinityTable, a hybrid surface for supporting the affinity diagramming method. This interactive workspace, based on a large multitouch table and a coupled vertical display, combines digital pen and paper notes, tangible tools, and multi-touch interaction techniques to replicate many...

In this paper we report a comparative study investigating two interaction techniques for grouping items spatially on a tabletop interface. We compared a container technique with a proximity technique. The container concept was considered due to its familiarity with desktop systems, while the proximity technique is a novel organic concept based on s...

Using affinity diagramming as an example, we investigate reality-based interfaces for supporting creative group work. Based on an observational study grounded in the reality-based interaction framework, we identified power vs. reality tradeoffs that can be addressed to find a close fit to embodied practice. Using this knowledge, we designed and imp...

Using affinity diagramming as an example, we investigate interaction techniques for supporting collaborative design activities. Based on an observational study, we identified design guidelines that need to be addressed to find a close fit to embodied practice. Using this knowledge, we designed and implemented AffinityTable, a hybrid surface for sup...

In this paper we describe a system design for supporting creative group activities using distributed displays and mul- timodal interaction. We describe the rationale behind our approach and proposed interaction techniques for support- ing collaborative sketching. Our goal is to understand how the interface metaphor, display space and interaction mo...

In this paper we present our approach to support artifact-mediated collaboration in interaction design. We argue that the extensive number and the diversity of artifacts created and reflected upon during collaborative design activities as well as transitions between physical and digital representations impose both a challenge and opportunity for su...

In this paper we report our findings from an exploratory design study using a combination of an interactive tabletop and digital pen & paper technology during a full-day creativity workshop with creative professionals. We describe the applied creativity technique, the system design and the employed interaction techniques. The preliminary results of...

This research investigates novel methods and techniques along with tool support that result from a conceptual blend of human-computer interaction with design practice. Using blending theory with material anchors as a theoretical framework, we frame both input spaces and explore emerging structures within technical, cognitive, and social aspects. Ba...

When the user interface (UI) has to be specified, a picture is worth a thousand words, and the worst thing one can do is to attempt writing a natural language specification for it. Nevertheless, this practice is still common, and it is therefore a difficult task to move from text-based requirements and problem-space concepts to a final UI design, a...

Collaborative corporate requirements engineering and UI specification demands modelling approaches that all stakeholders can understand and apply. Using traditional engineering methods, an IT organization often experiences frustrating communication and competency issues. Current processes lack adequate tool support for networked and complex project...

Zusammenfassung Dieser Artikel stellt einen hybriden Ansatz zur Unterstützung kollaborativer Designtechniken vor. Die anhand der Designtechnik Affinity Diagramming beschriebenen Interaktionskonzepte werden aus einer Literaturrecherche und einer empirischen Studie abgeleitet. Diese Analyse zeigt, dass die Nutzung von Papierartefakten insbesondere in...

This demo presents two interaction techniques for grouping items spatially on a tabletop interface. It allows participants of the conference to experience and compare the container technique "Bin" and the proximity technique "Blub". While the container concept is similar to the folder concept on desktop systems, the proximity technique is a novel o...

When the user interface (UI) has to be specified, a picture is worth a thousand words, and the worst thing one can do is attempt to write a natural language specification for it. Nevertheless, this practice is still common, and it is therefore a difficult task to move from text-based requirements and problem-space concepts to a final UI design, and...

We introduce a UI specification tool that interactively integrates interdisciplinary and informal modelling languages with different fidelities of UI prototyping. Our innovative experimental tool, called INSPECTOR, is the first tool that assembles models and design into a UI specification with a zoom-based visualization approach.