Nadia Haubner

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Multi-touch and tangible input paradigms provide new opportunities for post-WIMP (Windows, Icons, Menus, Pointer) user interfaces. The development of such novel interfaces challenges designers and software developers alike. TUIO AS3 addresses these challenges by providing a toolkit for the rapid development of multi-touch and tangible user interface (TUI)(More)
In this paper an algorithm to recognize single stroke gestures using a Time-of-Flight camera is presented. To achieve this goal, freehand gesture input is provided by articulating a single stroke in three-dimensional space using a stretched nger. The position of the ngertip is tracked and gesture input can be deactivated by forming a st. In this way, the(More)
Interactive surfaces (IS) like digital tabletop systems offer a cornucopia of input possibilities like touch gestures or interaction with physical objects. Additionally, multiple users can interact simultaneously allowing for a collaborative setting. These aspects have increased the complexity of designing such interfaces as compared to WIMP interfaces.(More)
Digital tabletop environments offer a huge potential to realize application scenarios where multiple users interact simultaneously or aim to solve collaborative tasks. So far, research in this field focuses on touch and tangible interaction, which only takes place on the tabletop’s surface. First approaches aim at involving the space above the surface,(More)
Recently presented tabletop setups that combine multi-touch and in-the-air input mechanisms offer new interaction possibilities above and around the surface. This paper introduces a comprehensive collection of gestural interaction metaphors based on these user input mechanisms in combination with an in-depth evaluation regarding usability and design(More)
Integrating digital tabletop systems in private living environments is a promising approach to enhance people’s everyday life with information technology. Apart from using the surface of such a tabletop, research on the detection of interaction above and around the surface is increasing rapidly. So far, detection is limited either to very specific gestures(More)
We present “Goal-snapping”, a novel approach for applying snapping techniques to tangible and multi-touch interfaces. It can be used to support users in accomplishing basic tasks such as aligning, sorting or grouping of virtual objects. As using snapping on large surfaces poses challenges in interaction design, we identify and discuss according parameters(More)
Interaction in the 3D volume above an interactive tabletop opens up new possibilities for enhancing and improving tangible user interfaces on the tabletop’s surface. We conceived and implemented a set of novel interaction techniques that rely on the combination of tangible user interfaces with a 3D volumetric user interface. We used a gaming scenario as a(More)
Hand-held laser scanners offer a popular method for the digitisation of real world objects. A projected laser line swept over the surface of an object enables collection of a series of sweeps, each sweep comprising a group of profiles. The process of aligning profiles within a sweep is known as profile registration. This paper presents the application of(More)
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