Adventures in Slitscanning

Slitscan of Crosstalk

I’ve been thinking about slitscan effects ever since the Biosphere and Egbert Mittelst├Ądt performance at Recombinant Media Labs last year. Egbert uses slitscan techniques to great affect, and the surround cinema format of RML was a perfect canvas for his work.

The rendering process he uses took quite some time, a majority of the week leading up to the show, and so I wanted to explore the possibilities of realtime effects using hardware acceleration and the GPU. For a fairly comprehensive catalog of artists using slit-scanning techniques, see Golan Levin‘s compilation.

For my implementation I used Max/MSP – Jitter. Its GPU processing and shader tools made it fairly easy to come up with a fast slit-scanner at high resolutions. The Jitter Slitscan Source contains both a CPU and GPU version of this patch, to attempt to accommodate many hardware configurations. To run this code requires the Max/MSP and Jitter runtime, or the full version if you want to edit the code.

The scan at the top of this post is sourced from a performance of Crosstalk by Jay Cloidt and Nancy Karp + Dancers. The following image is sourced from a soundcheck by Triometrik.

Slitscan of Triometrik


About this entry