Sample code for reproducing the Emergent Orange effect using uncorrelated photos from Flickr.

To use

1. Obtain an API key / shared secret from Flickr. Store these in the file apikey.sh, which should read like so:

$api_key = '12d9e476f6ad2129db1598d51dbe8c03'; $sharedsecret = 'cce5b2335facb16b';

2. (optional) Use the script getHighestFlickrID.pl to obtain the highest ID currently in use on Flickr.
   Use this to modify the variable $maxID in getRandomPhotos.pl.

3. Create a directory cache/

4. Run the perl script getRandomPhotos.pl - it will downlaod 10,000 random Flickr photo thumbnails to the cache. Note: This relies on the command-line version of curl being present.

   This will take 2-3 hours, and the images will occupy 1.4 gigabytes of disc space.

5. Run the python script amalgamTest.py to produce test images using these random photos. The default settings produce a 10x10 grid of amalgam images. Use the -p argument to increase the number of images to layer - as you increase the -p value, the orange effect will become more apparent.

   usage: amalgamTest.py [-h] [-r] [-n] [-o OFILE] [-p PASSES] [-d DIR] [-s SEED]

   optional arguments:

    -h, --help                       show this help message and exit
    -r, --random                     Enable random image generation - unimplemented
    -n, --nonormalize                Disable normalization
    -o OFILE, --ofile OFILE          Output image name
    -p PASSES, --passes PASSES       Passes (number of images to layer) - default 2
    -d DIR, --dir DIR                Image directory path (default .cache/)
    -s SEED, --seed SEED             Random seed - for reproduceable selections
    -v, --verbose                    Verbose output
   

Here is sample output, showing 100 images for each tile, with the output normalized.