Geolocating tool

In Wikidocumentaries all openly licensed images can be geotagged. This is not available for images, whose reuse is restricted.

There will be an internal geotagging app, and the images can be rephotographed and geotagged with the Ajapaik mobile app.

The tool is inspired by the work done in the Ajapaik.ee project of the Estonian Photographic Heritage Society and based on the Surveyor project for New York Public Library Labs.

Workflow for geotagging

1. Access to geotagging is available with each image in the images module on the topic page and the image image viewer.

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• The most essential metadata of an image is saved into Wikidocumentaries on the moment it is selected for enriching. Any action in the actions menu will make this happen.

Added to the image item

Wikidocs Vue variables	Wikidocs Wikibase property
imageURL
imageHash

See Metadata mapping for more info.

2. The geotagging interface is based on the Wikidocumentaries tools layout. It includes a split view of the zoomable image and the zoomable map.

• Wikidocumentaries-geolocate nomenu en.png
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Enhancement ideas:

• The map could be tilted and the viewpoint could be created/viewed in a perspective-mode. Idea from Matthias Müller-Prove. See screenshot in the end of the page.

Step 1

Choose an existing location with the search pulldown (data from Wikidata and Wikidocumentaries).

• Prompt: "Find the location by searching for the depicted place in the search field above."
• Buttons: "Set location" and "Reset".
• Action "Set location"
  • A BLACK pin is placed on the map showing the location of the target item. > Step 2
  • The target item is saved with the image metadata (in property "depicts"). Because the image can depict several items, it may be useful to either have a special property for the target or a qualifier for the target item in the "depicts" property.
• What does "Reset" do? Return to initial state.

If the item does not have coordinates, the user is asked to add the location of the target (moving the POI to the right location).

• A RED pin is placed on the map showing the location. > Step 2

If the item does not exist, the user (can add the item and/or) is asked to just add the location of the target, like above.

• A RED pin is placed on the map showing the location. > Step 2 (with possible intermediate step TBD.)

Step 2

The user can modify the location of the pin.

• The pin turns to RED if modified.

The location is confirmed

• Prompt: "Modify and save the location. You will be recorded as the source of the new location."
• Buttons: "Save location" and "Cancel".
• Action "Save location"
  • The pin turns GREY. > Step 3
  • The coordinates are saved with the target item.
• What does "Cancel" do? Remove the pin > bad idea. Return to previous screen > Bad idea. Return to the first question of selecting the target > Better idea.

Enhancement ideas:

• Add topic if it does not exist?
  • Add topic modal
  • Suggest existing topics around the selected location?

Thing	Wikidocs Wikibase property
Selected target QID	depicts (P180)
Selected target coordinates

Step 3

• The user will place the camera, the target and the camera angle on the map.
• The user can skip this and save only the point.

Enhancement ideas:

• The user could point items in the map and equivalent items in the image. The field of view could be adjusted automatically based on that. (There will be an illustration of this).
• The user could frame the side of a building (or other object: street, pond, statue...) in the image and locate the equivalent in the image.

Controls

• It should be possible to use different background imagery: Aerial images, OSM, local official open map sources, historical maps. Maybe even display nearby images? This interface should be similar to the map interface in the topic page.
• Address or geographic search may be used to help find the location.

3. The geotagging data is added to the local image metadata.

• We can contribute to a standardised exchange format for geotagged photos.

Inspiration

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  Ajapaik web app

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  NYPL Space/Time Surveyor

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