live audiovisual
by mathr & netz

CUNA (2021)

Free registration required, online performance February 6th, MX and online.

PIKSEL (2020)

Piksel20 is scheduled for November 19-22, in Bergen, NO and online.

IDKF (2020)

Internationales Digitalkunst Festival

IKLECTIK [off-site] (2020)

IKLECTIK [off-site] presents
Sonic Electronics Halloween Event (online) with
Amy Cutler / on&off / Isn'tses & raxil4 / mathr & netz
Saturday 31 October | 8pm GMT
On IKLECTIK Youtube channel

STWST (2020)

STWST48x6 MORE LESS in Kooperation mit ARS ELECTRONICA Kuratoren: Shu Lea Cheang, Tanja Brandmayr, Franz Xaver
Linz, Austria, online


Tatsuru Arai / Bioni Samp / mathr&netz

fly vision

The fly vision algorithm is based obviously on the eyes of flies: A compound eye is a visual organ found in arthropods such as insects and crustaceans. It may consist of thousands of ommatidia, which are tiny independent photoreception units that consist of a cornea, lens, and photoreceptor cells which distinguish brightness and color. The image perceived by the arthropod is a combination of inputs from the numerous ommatidia, which are oriented to point in slightly different directions. Compared with single-aperture eyes, compound eyes have poor image resolution; however, they possess a very large view angle and the ability to detect fast movement.

how it works

The visualization code takes an image from a single lens webcam, and processes it to emulate the ommatidia. Arranged in a hexagonal grid, which is an optimal packing reached by evolution, each cell has a wide angle, with overlapping edges repeating parts of the image and enhancing the drama of moving objects. The colour of the cells are modified according to the volume levels of three frequency bands of audio (bass, mids, treble). Over time the size of the cells are modulated, zooming disconcertingly.

ommatidia by mathr&netz at Iklectik, London, UK in 2019
ommatidia by mathr&netz streaming to STWST48x6, Linz, Austria in 2020


Claude Heiland-Allen is an artist from London interested in the complex emergent behaviour of simple systems, unusual geometries, and mathematical aesthetics. From 2005 through 2011 He was a member of the GOTO10 collective, whose mission was to promote Free/Libre Open Source Software in Art. Since 2011, Claude has continued as an independent artist, researcher and software developer. His current main projects include various deep zooming tools for 2D escape time fractals (et, kf, zoomasm), musical performance live-coding in the C programming language (clive), and a postfix bytebeat/rampcode music system with a collaborative web-based interface based on Etherpad (barry).


Laura Netz is a curator, artist and researcher established in London since 2009. Has collaborated with various institutions such as Fonoteca Nacional de Mexico, Museum of Contemporary Art Barcelona, Museum of Transitory Art, or International Symposium on Electronic Arts. In 2015, she launched her independent record label EAM Elektronische-art-and-music. Laura Netz is an active participant in the hacker community. Although the artists creates her own DIY oscillators prototypes based on Hardware Hacking by Nick Collins, and also develops workshops on DIY circuitry for beginners, during Medial Dark Ages performance the artist is using prototypes from: Mutan Monkey Analog Instruments, DIY opto-oscillators; Martin Howse, Detektors; and Cyrille Henry, Nozoïd, MMO-3.

ommatidia by mathr&netz promo image (loudspeaker)
ommatidia by mathr&netz promo image (headphones)

our technology

Provided by artists:

tech rider

Provided by venue:

ommatidia by mathr&netz promo image (soundcard)