Posts tagged slitscan

I had a few Processing sketches that I’ve made and never took the trouble to document or record in some way lying around. So here we go: this is a short video with minimal editing that showcases what I called an Audio-controlled Directional Delayer. You can check the code in my Processing 3.x Github repository.

What it does is to render each frame as a set of rows or columns copied from a specific frame in a 150-frame buffer (or more, if you want). From how far back in that buffer will that row or column be retrieved is mapped to the audio input level. Sometimes a high amplitude will also trigger a mode change (horizontal/vertical).

Here’s another example, using a couple of videos I recorded at the local market. The audio track was hastly assembled from TB Arthur’s free sound library, by the way.

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These are some of my early experiments with slit-scan photography, made while trying a Processing application I coded mostly as a learning exercise. The software allows you to either 'scan' your webcam image or a video file, but since using my laptop as camera is a bit cumbersome, most of the above images were made by 'scanning' some random videos I had around. I'll have to try to shoot video specifically for slit-scanning — so far I found out that stable, sideways shots of slow-moving subjects work the best. (As an aside, slit-scan photography is basically one of the main techniques used by Photo-finish systems, only at very high frame rates.)

Anyway, I think the app is cool and stable enough to be worth sharing, so I made a download for Windows available — head to my Processing sketches page to get it!