Installation

Requires Crystal.

git clone https://github.com/czycha/acidity.git
cd acidity/
shards build

You may want to add acidity/bin/ to your path to use the script globally.

Usage

acidity input.png output.png [radius]

Currently only supports loading and writing to PNGs. Refer to the Processing port for more image format options.
Radius is an optional, positive, non-zero integer. Defaults to 9. Larger numbers take longer, but have more interesting results.