Are there any open source web based solutions that allow you to upload an image, georeference it to a baselayer, then draw and export geojson feature data?
Possibly similar to http://geojson.io . But includes the ability to upload images and match them up to a baselayer. And then digitize the features with a drawing tool.
Seems would be possible to create with Leaflet plugins like Leaflet.DistortableImage
Wondering if someone has already created something similar?