TEMAP Project – Crowdsourcing Old Maps

Petr Žabička Moravian Library in Brno

•  TEMAP project •  Access •  Search

•  Georeferencing •  Future work

Agenda

TEMAP Project •  TEchnology for access to Czech MAP Collections

•  MZK, Charles Uni (CU), Masaryk Uni (MU) TEMAP results: •  Georeferencer and Georeferencer based workflows (MZK) •  Detection of cartographic projection from a scanned map (CU) •  Tool for map series cataloguing (IIIrd military mapping) (MU) •  Testing tools for duplicate/similar map image detection (MZK) •  Map cataloguing guides and online courses (UK) •  Cataloguing and digitisation of map collections (4 globes, 50000

maps) •  Improvement of geoname search tools

Help to put old map collections online

Why?

•  Online publishing of high resolution scans of old maps •  Intuitive search based on time and location

•  availability of geographical coordinates of the map

edges •  Map comparison

•  availability of geographical coordinates of selected points on the digitized map

Aims

MZK has long been involved with old maps: •  Digitisation and online publishing of its map collection

•  http://mapy.mzk.cz/ •  Use or development of free and open source tools for

•  modification and publishing of large images

•  placing old maps on a contemporary world map •  map search

•  Projects: Historical Collections of MZK, Old Maps Online, EuropeanaTravel, TEMAP, ...

Old Maps in MZK

Image resolution: 300+ dpi •  Nip2 image processing software •  Image tiles

•  Large number of tiles => jpeg2000 and IIPImage •  Tile based map viewing => Zoomify + OpenLayers

•  Digital library => Kramerius + metadata editor

Publishing

NIP2/VIPS image processing: •  Halfway between excel and Photoshop •  Works with TIFF

•  Modification and stitching of very large images •  Freely avalilable, can process images larger than the

amount of available memory in a PC JPEG2000 conversion (using Kakadu software library) •  Jpeg2000 creation recommentdations

•  Quality layers, zoom levels etc.

Publishing

•  Added JPEG2000 support using Kakadu library •  JPEG2000 created with inappropriately chosen parameters

will result in a very slow map display! •  Memcached tile cache

•  Optional watermarking support

•  Tileset standards: IIP, DeepZoom (MZK), Zoomify (MZK), IIIF (ÖNB)

•  MZK publishes installation packages for Debian Linux and a Windows installer

http://help.oldmapsonline.org/jpeg2000/windows/

MZK and IIPImage

•  IIPImage generates tiles of all four supported standards •  Many different tile viewers can be used with the same

image server (Java, Flash or Javascript based)

•  OpenLayers preferred for maps •  Currently using modified version 2

•  Version 3 (now in beta) adds native Zoomify support •  Other viewers can use DeepZoom or IIIF tile structures

(Seadragon/SandDragon)

Tile Viewing

•  Kramerius 4 can work with IIPImage •  DeepZoom or OpenLayers viewer •  Page thumbnails can be created by IIPImage on the fly

•  Metadata editor for Fedora Commons repository •  code.google.com/p/meta-editor

Kramerius is not mandatory for the other tools mentioned in this presentation

Digital Library

•  Full text search fails on maps •  Geographic names change in time, spelling varies •  Different institutions create different quality of metadata

•  How to account for the scale of a map in search?

⇒ Maps can best be searched for on a map!

Search

•  Search system requirements: •  Support for geographical relevance ranking •  Scalability (user numbers, map index)

•  Speed (immediate response to change of search parameters)

•  Data requirements: •  Geographic bounding box coordinates •  Scale of a map or its size & DPI

•  Year of publication, year/era shown on a map

Search

•  JISC Project •  Indexes many online map collections worldwide •  Based on MapRank Search technology

•  (http://www.mapranksearch.com) •  Project started in February 2012 with 6 collections

•  30000 visits per day when announced

•  Open for new map collections (for free) •  All rights remain with the collection owners

Requirements: •  Online zoomable maps in high resolution

•  Permanent URL and free access •  Basic description of the maps in Dublin Core including a

bounding box data

•  While cataloguing: BoundingBox tool

•  Online published maps:

Georeferencer

Bounding Box

http://boundingbox.klokantech.com

•  Enriches metadata of scanned maps •  Runs in a web browser •  Intuitive

•  Crowdsourcing friendly – wiki-like •  Shows 2D and 3D map overlays

•  analyses map accuracy, calculates a bounding box •  Successful pilots in several institions:

Georeferencer

Pilot of 9 institions under the TEMAP project: •  Moravian Library in Brno •  Charles University in Prague •  Masaryk University •  National Library of the Czech Republic •  Museum of West Bohemia in Pilsen •  University of Jan Evangelista Purkyně •  Research Library in Olomouc •  Research Library in České Budějovice •  National Technical Library

•  Pilot start 21st March 2013 •  Motivating users - competition •  Institutions supplied csv files with metadata and

their logos •  Metadata created by the users are available to

enrich the map presentations in the individual institutions

Project status after new map import today

•  Over 17000 users •  Over 260000 control points •  Highest number of points on a map: 581 (minimum

required: 5) •  Most active user: over 30800 points (11,5%)

•  Most work done right after pilot announcement by the media

•  Some images were not maps (text, veduta)

Challenges...

http://hermes.mzk.cz/map-transformation/

New requirements: •  Mark map as impossible to georeference

•  What about border cases?

•  Map rotation (OpenLayers 3 working prototype) •  Using another old map for georeferencing

•  Mandatory crop lines

•  Quality control interface

•  Several maps on one sheet

•  Reference map with a prominent river network •  Overlay improvement – map warping in a browser

WWW.STAREMAPY.CZ

WWW.TEMAP.CZ