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Schüsselbauer, Dennis ; Schmid, Andreas ; Wimmer, Raphael

Demonstrating Dothraki: Tracking Tangibles Atop Tabletops Through De-Bruijn Tori

Schüsselbauer, Dennis, Schmid, Andreas and Wimmer, Raphael (2021) Demonstrating Dothraki: Tracking Tangibles Atop Tabletops Through De-Bruijn Tori. In: Mensch und Computer 2021 (MuC ’21), September 5–8, 2021, Ingolstadt, Germany. (Submitted)

Date of publication of this fulltext: 13 Aug 2021 11:17
Conference or workshop item
DOI to cite this document: 10.5283/epub.47827


Abstract

We demonstrate usage examples and technical properties of Dothraki, an inside-out tracking technique for tangibles on flat surfaces. An optical mouse sensor embedded in the tangible captures a small (36×36 pixel / 1×1 mm), unique section of a black-and-white De-Bruijn dot pattern printed on the surface. Our system efficiently searches the pattern space in order to determine the precise location ...

We demonstrate usage examples and technical properties of Dothraki, an inside-out tracking technique for tangibles on flat surfaces. An optical mouse sensor embedded in the tangible captures a small (36×36 pixel / 1×1 mm), unique section of a black-and-white De-Bruijn dot pattern printed on the surface.
Our system efficiently searches the pattern space in order to determine the precise location of the tangible with sub-millimeter accuracy. Our proof-of-concept implementation offers a recognition rate of up to 95%, robust error detection, an update rate of 14 Hz, and a low-latency relative tracking mode. The MuC demonstration encompasses four separate demos that showcase typical application scenarios and features: a magic lens, two tangibles that know each others relative position, a simple geometry application that measures distances and angles, and tangibles that know on which of multiple surfaces they have been placed.



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