investigate sequence splitting using posm tools

[maxgrossman]

background

the so-called loaders folder will hold code that takes folders filled with images and splits them into sequences (like what exists now in the mapillary tools repository).

work

• [ ] See how long it takes for mapillary tools to split folder full of images provided by @danbjoseph into sequences. Per the results, evaluate if they can be used out of the box or if some configuring (forking and customizing things like number of images per sequence, and distance cut off) is needed.

• [ ] build an endpoint that given a path or set of paths, creates sequences and writes to the database:

  • the images to the images table (including img uuid, paths to images, lat/lon, sequence uuid)
  • a sequences of images to the sequence table

[maxgrossman]

after having to try to handle python 2.7 deps for mapillary tools and having some interest to use python3 for the server code, we've chosen to do the sequence splitting / making with node.

There is a pretty nice exif metadata reading library and after the reading the logic mapillary used for doing sequence splitting (the guts of what we wanted their tools for), we figured writing our own code won't be to heavy a lift.

tickets and branches to come. closing this for now