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HSD

Hochschule Düsseldorf
University of Applied Sciences


FB5

Fachbereich Medien
Faculty of Media

Labor für Virtuelles Studio / Virtuelle Realität



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Abstract: Cost effective tangibles using fiducials for infrared multi-touch frames

Thomas Becker und Jens Herder. Cost effective tangibles using fiducials for infrared multi-touch frames, 15th International Conference on Human and Computer, Hamamatsu/Aizu-Wakamatsu/Duesseldorf, February, 2013.

The late immersion of multi-touch sensitive displays enables the use of tangibles on multi-touch screens. There a several wide spread and/or sophisticated solutions to fulfill this need but they seem to have some flaws. One popular system at the time of writing is an overlay frame that can be placed on a normal display with the corresponding size. The frame creates a grid with infrared light emitting diodes. The disruption of this grid can be detected and messages with the positions are sent via usb to a connected computer. This system is quite robust in matters of ambient light insensitivity and also fast to calibrate. Unfortunately it is not created with the recognition of tangibles in mind and printed patterns can not be resolved. This article summarizes an at- tempt to create fiducials that are recognized by an infrared multi-touch frame as fingers. Those false fingers are checked by a software for known patterns. Once a known pattern (= fiducial) has been recognized its position and orientation are send with the finger positions towards the interactive soft- ware. The usability is tested with an example application where tangibles and finger touches are used in combination.

Keywords:

low cost multi-touch infrared overlay frame, fiducial tangible recognition

VirtuellesStudio

HSD FB 5 VSVR

17.09.2013

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