One repo I found is https://github.com/G3Kappa/pictomaze. It requires installing processing and the python plugin.
You can see the write up / output: https://medium.com/@G3Kappa/generating-mazes-from-pictures-o...
You can see the write up / output: https://medium.com/@G3Kappa/generating-mazes-from-pictures-o...
Sounds cool. Is there a public implementation?