Create a photo mosaic from a reference photo using other pictures.
You can try the app in the following url: https://collage-creator.herokuapp.com/
Note: Heroku is a free host with CPU and request time limitations, i'm sorry for any inconvenience this may cause
The app is made using the python library Dash, which allows creating a front-end from a python back-end.
When the pictures are uploaded the predominant color of each of them is computed by applying a K-means algorithm to each.
Once the predominant color of each photo is calculated, another K-means computes N clusters in the RGB space that collect the pictures with similar colors, in order to generate a palette of N colors.
Finally, the distance in RGB space of each pixel of the reference image to each cluster centroid is computed and a photo of the closest cluster is replaced by the corresponding pixel.
Install the python packages specified in the requirements.txt by running the following command:
pip install -r requirements.txt
Then, run the following command to execute the app:
gunicorn -b 0.0.0.0:8080 app.app:server --reload --timeout 120
The --reload tag at the end for live reloading on changes.
Navigate to: http://localhost:8080/
Run:
docker build -t collage-maker .
docker run -p 8080:80 collage-maker