Ricardo Langner
October 1st, 2010 - May, 24th 2011
involved peopleDipl.-Ing. Ricardo Langner,
Dipl.-Medien-Inf. Mathias Frisch and
Prof. Dr.-Ing. Raimund Dachselt
type of projectPhD Project
Precise alignment of graphical objects and the creation of accurate layouts are crucial activities in many applications, such as graphics design tools, presentation software, or graph editors. Surface computing is very promising for these application domains but not fully explored yet. The aim of this project is to develop tools which support layout tasks on interactive displays.
Multitouch Alignment Guides consist of a handle combined with a geometric shape such as straight lines, an arbitrary curve or a two dimensional closed shape (e.g., circles). This shape is used to bind graphical objects, e.g. pictures or graph nodes, and provides constraints for positioning these items. The arrangement of bound objects can be manipulated by multi-touch input.
The interactive grid is located in the background of a canvas. It allows precise positioning of graphical objects by snapping. In contrast to most grids which are typically adjusted by dialog boxes, the cell size of interactive grids can be changed directly by multi-touch input within a single fluent action. Furthermore, it is possible to switch between orthogonal and radial grids in a smooth and seamless way.
Ricardo Langner
October 1st, 2010 - May, 24th 2011
Dennis Kinzlin
August 22nd, 2011 - December 22nd, 2011
NEAT: A Set of Flexible Tools and Gestures for Layout Tasks on Interactive Displays
Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces (ITS 2011) Kobe, Japan, November 13-16, 2011, pp. 1-10.
Downloads: Full paper (6515KB), Video (32638KB)
Grids & Guides: Multi-Touch Layout and Alignment Tools
Proceedings of the Conference on Human Factors in Computing Systems (CHI 2011) Vancouver, Cananda, May 7-12, 2011, pp. 1615-1618.
Downloads: Video (19528KB)
Links: Free ACM Download, and Statistics

Best Poster
A Multi-Touch Alignment Guide for Interactive Displays (Best ITS Poster)
Proceedings of the ACM International Conference on Interactive Tabletops and Surfaces (ITS 2010) Saarbrücken, Germany, November 7-10, 2010, ISBN: 978-1-4503-0399-6, pp. 255-256.
Downloads: Poster Paper (366KB), Video (15226KB)