Image rewalk, rewalk

An algorithm that transforms an input image using random walks.

The following images are all generated with the default Windows XP background (by Charles O'Rear) as the source image.

Compilation

The project is meant to be built with SDL3 and SDL3_image. Assuming these are locally installed, and accessible with -l, the main file is compiled with:

gcc -Wall -o rewalk -lSDL3 -lSDL3_image rewalk.c

Usage

Run ./rewalk to get the following help message:

DESCRIPTION:
    Transform an input image into another using random walks
USAGE:
    rewalker [options...] <path_to_img>
OPTIONS:
    --output=...     (string)     Sets the output path for the generated image
    --width=...      (int)        The width of the generated image in px. Default is 600px
    --height=...     (int)        The height of the generated image in px. Default is 600px
    --tiled                       Attempts to generate an image that tiles on both axes
    --preview                     Opens a window to preview generated images, and generate more
EXAMPLE:
    rewalker --width=1920 --height=1080 --output=wallpaper.png source.png

Notes

This was inspired by the Rainbow Smoke algorithm, as showcased in this video by Generative Garden. But my version does not ensure all pixels from the source image are all used. Feel free to contribute!

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