University of Konstanz
Graduiertenkolleg / PhD Program
Computer and Information Science

Colloquium of the Department and the PhD Program


NiCE: designing Natural Interfaces for Collaborative Environments


Dr. Michael Haller, FH Hagenberg
Hagenberg, Österreich

date & place

Wednesday, 08.12.2010, 16:15 h
Room C 252


The research goal of NiCE is to design, develop, and evaluate natural user interfaces. We mainly focus on novel large surfaces and new interaction techniques, which are embedded in our daily-life environment (e.g. living room, conference room, office environment etc.). In this presentation, we will present two projects, the NiCE Formula Editor and Sitz g'scheit.

In the NiCE Formula Editor, we can recognize handwritten formulas to provide in situ computation and visualization. Our editor uses a novel hardware setup, suitable for use as a desktop or whiteboard that disambiguates pen and multi-touch input. In our interface, the pen writes and performs gestures, while touch manipulates. Multiple users can sketch mathematical expressions (e.g. formulas, vectors, matrices, etc.) with digital pens on the interactive surface. These expressions are analyzed and interpreted using the StarPad SDK's support for mathematics recognition.

In the project Sitz g'scheit, we present three different ways of interrupting people to posture guidance. We developed an ergonomically adjustable office chair equipped with four sensors measuring the office worker's posture. It is important that users do some training after bad posture and be alerted of this; therefore, we implemented three different alert modalities (Digital Feedback, Physical Feedback, and Vibrotactile Feedback), with the goal to find out which of the techniques is the most effective interruption modality without causing a huge disruption effect. To measure the task-performance, we conducted a formal user study.