Old Maps Onlineand

Georeferencer

Václav Klusák (vaclav.klusak@klokantech.com)

www.oldmapsonline.org

• Time and scale filters

• Full-text filter

• Ordered by similarity to query bounds

• Immediate feedback

• Data come from libraries and archives

• Approx. 130 000 maps now

• We link back to the original sites

www.mapranksearch.com

• Collection of records with their attributes

• Records must have geometries (WKT)

• Dublin Core inspired metadata

• Custom attributes

• Query by bounding box

• Optimized for fast frequent searches and infrequent batched updates

• Read-only

• Machine-dependent file format

• WAH compressed bitmap indices

• Response time independent from query bounds

• FastCGI application

• OpenSearch queries

• JSON results

• UI based on Google Closure Javascript Toolkit

• Google Maps, OpenLayers 3 or Leaflet

www.georeferencer.com

Georeferencer

• Geared towards libraries and archives

• Enables them to georeference large collections of digitized maps by crowdsourcing the effort

• Rewards users with attractive vizualizations

• Development sponsored by Moravian Library

• Users add GCPs and cutlines to maps

• Revision history is stored

• Quality control by reviewers

• Google Maps, WMS and WMTS overlays

• 3D view with Google Earth

• Accuracy analysis with MapAnalyst

• MARC 034

• gdal_georeferencer.py

• Linked data annotations in development

http://www.georeferencer.com/

• Image servers as data sources

• ContentDM, IIP Image, Zoomify, ...

• Only thumbnails are stored

• Same metadata as in MapRank

Klokan Technologies GmbHinfo@klokantech.com