IIIF
I want to georeference a IIIF image of a map
Description
I want to georeference a IIIF image of a map
12-votes in Stanford maps meeting
Variation(s)
(do you know of, or can you imagine, similar use cases?)
Proposed Solutions
(any ideas about how your use case might be supported)
Additional Background
(more about your perspective, existing work, etc. goes here.)
The needed information for providing georeferencing of an image:
- mask of image (area to be georef, can be whole image)
- control points related to geographic space + pixel coordinate space
Masking Annotation
targets: svg or whole canvas body: geojson feature collection
FeatureCollection contains points, the points have properties these properties contain the pixel space coordinates.
{
"id": "http://annotation/id",
"motivation": "georeferencing",
"target": "https://example.com/manifest/123/canvas/123#xywh=50,50,100,100",
"body": {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"properties": {
"transformationType": "affine",
"x": 300,
"y": 400
},
"geometry": {
"type": "Point",
"coordinates": [
-2.109375,
13.923403897723347
]
}
},
{
"type": "Feature",
"properties": {
"transformationType": "affine",
"x": 100,
"y": 200
},
"geometry": {
"type": "Point",
"coordinates": [
11.25,
21.616579336740603
]
}
}
]
}
}
to clarify, geometry and control points are at the canvas points for the image. (was the pixel points for the full image)
Control points would be for the full image or rather the canvas dimensions.
