IOR – Index of Refraction

Augmented Reality Apps by Robert Seidel
Music by Nikolai von Sallwitz

Solo Exhibition at Kunsthaus Erfurt

General Usage

1) Use a modern Smartphone (IPhone SE and up).
2) Better update your Instagram or Facebook App.
3) Please post your result under #iorAR 😉


This AR filter detects portraits, single humans as well as crowds, turning them into painterly silhouettes. Reminiscent of the scientific gaze of infrared cameras it transforms even the most everyday situations into shape-shifting textural compositions.


Step inside a virtual crystalline sculpture! View the whole world distorted through a digital looking glass that reacts on your movement and sometimes has a mind of its own, turning everything into bewildering chaos.


This unique painting tool allows you to add brushstrokes to your front camera view. By potentially tracking a planar surface you can even expand your canvas into the third dimension, diving into an ethereal color field painting.

Switch to Front Camera – Paint!
Tap – Start / Pause the Brush
Long Press – Activate Gravity
Pinch – Scale the Brush
Swipe – Switch the Brush


IOR-AR-Apps premiered at the Exhibition
Robert Seidel / IOR – Index of Refraction
Kunsthaus Erfurt, Germany
November 23, 2018 – January 25, 2019

Artwork and Realization – Robert Seidel
Music – Nikolai von Sallwitz
Funding – Kulturstiftung des Freistaats Thüringen
Exhibition Production – Monique Förster, Kunsthaus Erfurt
Exhibition Setup – Ulrich Madeheim, Tom Plehn, Dirk Teschner and Florian Förster
Opening Speech – Christoph Tannert, Künstlerhaus Bethanien
Technical Support – Falk Müller
Equipment Support – Ulrike Pennewitz, Max Hattler
Web Support – Robert Berneis
Special thanks in preparation of the overall exhibition to Miriam Eichner, Alex Tolar, Carolin Israel, Marc Jung, Christian Werner, Ivar Zeile and everyone else making this project possible!