ODM VS latlon2country

If you are starting out, I recommend checking out WebODM. https://opendronemap.org/ the software is NOT super easy to use, but the community is very accepting of newcomers asking questions

https://github.com/OpenDroneMap/ODM

You take a drone, point the camera mostly down (a narrow angle, not straight down), take photos of land, with some overlap, preferably from different angles, load the software, and it creates an ortophoto, 3d model, height map, all georeferenced

If you have a drone there is https://opendronemap.org/

Its not really considered a panorama, I think you might want something like this https://opendronemap.org/

You can run https://opendronemap.org/ on your own computer and get a 3d object, but the technical learning curve is a bit steep.

You could do this through webodm. www.opendronemap.org

Yeah, the country location is a requirement to show the opening hours. The library (https://github.com/opening-hours/opening_hours.js) is aware of holidays in many countries, but for that it needs to know what country a POI is in.

The country awareness source code is here: https://github.com/pietervdvn/latlon2country

The idea: I've taken all the country boundaries from OSM (via nominatim); I slice them in four parts. If the resulting geojson is too big, I slice this again until I have small geojsons, suitable to download. If you know the zoomlevel and location, one can use the standard slippy-tile-index to fetch the correct tile. (Alternatively, if the entire tile is within a country, it'll just return the country code)

However, the client also needs to know what zoomlevel there is. For that, I built a search tree.

It's been a while though, so I've forgotten some of the details ;)

Probably not useful for you, but https://github.com/pietervdvn/latlon2country/ has a 'tiles.zip', where all the boundaries are tiled into small pieces.

I also have them available in cut-up geojson-fragments - I use them to quickly determine in which country a point lies in a frontend app. See https://github.com/pietervdvn/latlon2country