I want to be able to create simple vector data off of georectified historical maps within iiif

[frizatch]

Description

The goal is to create an streamlined way for researchers examining (historical) maps to create pertinent geojson data for their research.

Use case: Historian examining political boundaries finds longitudinal collection of maps depicting boundaries of China and wants to digitize them for comparison.

UI: the IIIF cursor could toggle from a pan & zoom tool to a simple draw-a-point/line/polygon tool with an export button.

Variation(s)

n/a

Proposed Solutions

Mostly tossing this idea out there in case dev wants to keep the door open.

Additional Background

Indeed, this is complicated and would be a long-term goal. AND researchers could export a geotiff and work in a different system to do this. However, there are many that don't have access to GIS workflows and this functionality could make this approach to (historical) data a possibility, so the scaling could be amazing.

There is a pandora's box of metadata and data quality here, but hey, DATA!

[frizatch]

One reason to create this functionality is if the main pipeline to historic map collections from most libraries ends up going through IIIF, this will expose geospatial research to so many.

[frizatch]

Please add labels "georeference" and "maps" to this issue.

[rsimon]

That's also a feature request we've been getting for a while from Recogito users. Right now, users can upload a TIF or JPEG, draw shapes, and get back the shapes in pixel coordinates.

The desired feature would be to be able to upload a GeoTIFF, or import a IIIF image with geo/projection info (encoded in the manifest?), and then get back the shapes not just in the (pixel) coord system of the scan, but aslo in geo-coordinates.