There are a few values in there. Some are scrolled incrementally when hit with a particular note. That would contribute to the apparent randomness, even though it isn’t really random. The other notes effect specific bits in the color.
Even though I know what it’s doing and created it, I still get mystified how some of the results happen. One little bit can change the whole appearance, which can be both frustrating and fun.
I am still learning how to play this “instrument”. Some images are more conducive to this than others. It doesn’t always have to do with the quality of the photo. Some look amazing, some look terrible.
Things that tend to look best: Forest, Cloudy skies, Some water shots (not all), animals. People tend to look weird, but sometimes that’s the look you want.
I hadn’t heard of minxdragon before. Thanks for the tip.