phomo lets you create photographic mosaics.
It arranges the tile images to best recreate a master image. To achieve this, phomo computes a distance matrix between all the tiles and the master image regions, looking not just at the average colour but the norm of the colour distributions differences.
Once this distance matrix is computed, each tile is assigned to the region of the master with the smallest distance between the colour distributions.
Requires python 3
In a terminal:
$ pip install phomo
As always, it is usually a good idea to use a virtual environment.
If you're just interested in command line usage, consider using pipx.
See the examples folder for usage as a python package.
Once it is installed, you can use the phomo command.
It would go something like:
$ phomo master.png tile_directory -S 20 20 -o mosaic.png
If in doubt see the help:
usage: phomo [-h] [-o OUTPUT] [-c MASTER_CROP_RATIO] [-s MASTER_SIZE [MASTER_SIZE ...]] [-C TILE_CROP_RATIO]
[-S TILE_SIZE [TILE_SIZE ...]] [-n N_APPEARANCES] [-v] [-b] [-g] [-d SUBDIVISIONS [SUBDIVISIONS ...]]
[-m {greyscale,norm,luv_approx}] [-j WORKERS]
master tile_dir
positional arguments:
master Master image path.
tile_dir Directory containing the tile images.
optional arguments:
-h, --help show this help message and exit
-o OUTPUT, --output OUTPUT
Mosiac output path.
-c MASTER_CROP_RATIO, --master-crop-ratio MASTER_CROP_RATIO
Crop the master image to width/height ratio.
-s MASTER_SIZE [MASTER_SIZE ...], --master-size MASTER_SIZE [MASTER_SIZE ...]
Resize master image to width, height.
-C TILE_CROP_RATIO, --tile-crop-ratio TILE_CROP_RATIO
Crop the tile images to width/height ratio.
-S TILE_SIZE [TILE_SIZE ...], --tile-size TILE_SIZE [TILE_SIZE ...]
Resize tile images to width, height.
-n N_APPEARANCES, --n-appearances N_APPEARANCES
The number of times a tile can appear in the mosaic.
-v, --verbose Verbosity.
-b, --black-and-white
Convert master and tile images to black and white.
-g, --show-grid Show the tile grid, don't build the mosiac.
-d SUBDIVISIONS [SUBDIVISIONS ...], --subdivisions SUBDIVISIONS [SUBDIVISIONS ...]
Grid subdivision thresholds.
-m {greyscale,norm,luv_approx}, --metric {greyscale,norm,luv_approx}
Distance metric.
-j WORKERS, --workers WORKERS
Number of workers use to run when computing the distance matrix.
The grid subdivision feature was inspired by photomosaic.
- look into parallelizing/multithreading
- look into non greedy tile assignments
- palette matching
- documentation
- shell completion
- hex grid