pixelsort

Tested with python3. Should work with python2 as well.

Requires Pillow. pip install Pillow should work. If not, see here for details.

There is also a requirements file which pretty much does the same via pip install -r requirements.txt.

From the command line:

git clone https://github.com/satyarth/pixelsort.git
cd pixelsort
python3 pixelsort.py %PathToImage% [options]

Tip: To replicate Kim Asendorf's original processing script, first sort vertically and then horizontally in threshold (default) mode:

python3 pixelsort.py %PathToImage% -a 90
python3 pixelsort.py %PathToSortedImage%

Parameter	Flag	Description
Interval function	`-i`	Controls how the intervals used for sorting are defined. See below for more details and examples.
Output file	`-o`	Path of output file. Randomly generates a file name by default.
Randomness	`-r`	What percentage of intervals not to sort. 0 by default.
Threshold (lower)	`-t`	How dark must a pixel be to be considered as a 'border' for sorting? Takes values from 0-1. 0.25 by default. Used in `edges` and `threshold` modes.
Threshold (upper)	`-u`	How bright must a pixel be to be considered as a 'border' for sorting? Takes values from 0-1. 0.8 by default. Used in `threshold` mode.
Char. length	`-c`	Characteristic length for the random width generator. Used in mode `random`.
Angle	`-a`	Angle at which you're pixel sorting in degrees. `0` (horizontal) by default.
External int file	`-f`	Image used to define intervals. Must be black and white.
Sorting function	`-s`	Sorting function to use for sorting the pixels.

Interval function	Description
`random`	Randomly generate intervals. Distribution of widths is linear by default. Interval widths can be scaled using `clength`.
`edges`	Performs an edge detection, which is used to define intervals. Tweak threshold with `threshold`.
`threshold`	Intervals defined by lightness thresholds; only pixels with a lightness between the upper and lower thresholds are sorted.
`waves`	Intervals are waves of nearly uniform widths. Control width of waves with `clength`.
`file`	Intervals taken from another specified input image. Must be black and white.

Sorting function	Description
`lightness`	Sort by the lightness of a pixel according to a HSV representation.
`intensity`	Sort by the intensity of a pixel, i.e. the sum of all the RGB values.
`maximum`	Sort on the maximum RGB value of a pixel (either the R, G or B).
`minimum`	Sort on the minimum RGB value of a pixel (either the R, G or B).