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A tool for generating XYZ tiles from IIIF Georeference Extension JSON and displaying them with MapLibre GL JS. Repository: https://github.com/nakamura196/iiif-georef-tiles GitHub Pages: https://nakamura196.github.io/iiif-georef-tiles/ Requirements Python 3.x GDAL (gdal_translate, gdalwarp, gdal2tiles.py) Installing GDAL # b # s r u m e U d a w b o c u O i n a S n t p s u t ( t / H a D i o l e n m l b s e i t b g a a r d n l e a l w l ) g d a l - b i n p y t h o n 3 - g d a l Usage p y t h o n 3 s c r i p t s / i i i f _ g e o r e f _ t o _ t i l e s . p y < I I I F _ G E O R E F _ J S O N _ U R L > Example p y t h o n 3 s c r i p t s / i i i f _ g e o r e f _ t o _ t i l e s . p y h t t p s : / / n a k a m u r a 1 9 6 . g i t h u b . i o / i i i f _ g e o / c a n v a s . j s o n Options Option Default Description --scale 0.25 Image scale factor --zoom 14-18 Tile zoom level range --output-dir docs Output directory --name tiles Tile folder name --work-dir work Working directory --keep-work - Do not delete working files Processing Flow I ┌ │ │ └ ┌ │ │ └ ┌ │ │ └ ┌ │ │ │ └ ┌ │ │ └ ┌ │ │ │ └ I ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ I ─ 1 ─ ─ 2 ─ ─ 3 ─ ─ 4 ─ ─ 5 ─ ─ 6 ─ F ─ . ─ ─ . ─ ─ . ─ ─ . ─ ─ . ─ ─ . ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ G ─ F ( ─ ─ D ( ─ ─ E ( ─ ─ C t ( ─ ─ G ( ─ ─ G v ( ─ e ─ e f ─ ─ o I ─ ─ m g ─ ─ o r g ─ ─ e g ─ ─ e i M ─ o ─ t e ─ ─ w I ─ ─ b d ─ ─ o a d ─ ─ n d ─ ─ n e a ─ r │ ▼ ─ c t ─ │ ▼ ─ n I ─ │ ▼ ─ e a ─ │ ▼ ─ r n a ─ │ ▼ ─ e a ─ │ ▼ ─ e w p ─ e ─ h c ─ ─ l F ─ ─ d l ─ ─ d s l ─ ─ r l ─ ─ r e L ─ f ─ h ─ ─ o ─ ─ _ ─ ─ i f w ─ ─ a 2 ─ ─ a r i ─ e ─ J ─ ─ a I ─ ─ G t ─ ─ n o a ─ ─ t t ─ ─ t b ─ r ─ S f ─ ─ d m ─ ─ C r ─ ─ a r r ─ ─ e i ─ ─ e r ─ e ─ O r ─ ─ a ─ ─ P a ─ ─ t m p ─ ─ l ─ ─ e ─ n ─ N o ─ ─ i g ─ ─ s n ─ ─ e a ) ─ ─ t e ─ ─ H ─ c ─ m ─ ─ m e ─ ─ s ─ ─ t ─ ─ i s ─ ─ T G ─ e ─ ─ ─ a ─ ─ l ─ ─ i ─ ─ l . ─ ─ M L ─ ─ U ─ ─ g A ─ ─ a ─ ─ o ─ ─ e p ─ ─ L ─ J ─ R ─ ─ e P ─ ─ t ─ ─ n ─ ─ s y ─ ─ J ─ S ─ L ─ ─ I ─ ─ e ─ ─ ─ ─ ) ─ ─ S ─ O ─ ) ─ ─ ) ─ ─ ) ─ ─ ─ ─ ─ ─ ) ─ N ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ┐ │ │ ┘ ┐ │ │ ┘ ┐ │ │ ┘ ┐ │ │ │ ┘ ┐ │ │ ┘ ┐ │ │ │ ┘ Conversion Results Original image After georeferencing Output Files d ├ ├ └ o ─ ─ ─ c ─ ─ ─ s / i s t ├ ├ ├ ├ └ n o i ─ ─ ─ ─ ─ d u l ─ ─ ─ ─ ─ e r e x c s 1 1 1 1 1 . e 4 5 6 7 8 h . / / / / / t j m s l o n # # # M O X a r Y p i Z L g i i t b n i r a l e l e s G I L I I J F S G v e i o e r w e e f r e r e n c e J S O N Local Preview c # d O d p o e c n s h & t & t p p : y / t / h l o o n c 3 a l - h m o s h t t : t 8 p 0 . 0 s 0 e / r v e r 8 0 0 0 IIIF Georeference Extension The IIIF Georeference Extension is an extension specification for adding georeference information to IIIF images. ...

Overview In the following article, I introduced the “Image Collection Management” tool designed for easily trying out IIIF features. This time, I will introduce the technologies used behind this tool. Introduction The Image Collection Management tool is a web application for managing and publishing image collections in the IIIF (International Image Interoperability Framework) format, an international standard. This article explains the technical implementation of this tool, with a focus on the IIIF specification implementation and handling of geospatial information. ...

This article was created by AI with human additions. Overview We migrated the map component of the IIIF Georeference Viewer from Leaflet to MapLibre GL and implemented multiple feature improvements. This article explains the major features implemented and their technical details. https://nakamura196.github.io/iiif_geo/ Major Improvements 1. Automatic Image Rotation To display IIIF images in the correct orientation on the map, we implemented a feature that automatically calculates the rotation angle from control points (corresponding points). ...

Overview This is a memo about updates made to the IIIF georeference extension visualization tool. The tool is published at the following location. https://github.com/nakamura196/iiif_geo It provides a side-by-side display of modern maps and images, as shown below. Update Details Allmaps is a tool that supports data creation based on the IIIF georeference extension. https://allmaps.org/ Its usage is introduced in the following article. In this update, support was added to load data created by the above tool. ...

概要 I looked into how to use “Peripleo,” so here are my notes. “Peripleo” is described as follows. Peripleo is a browser-based tool for the mapping of things related to place. https://github.com/britishlibrary/peripleo This time, I will introduce how to use it in combination with “Rekichizu” (historical maps) introduced in the following article. Output You can try it at the following URL. https://nakamura196.github.io/peripleo/ The repository is as follows. ...

Overview I looked into how to use “Rekichizu,” so this is a memo. “Rekichizu” is described as follows. “Rekichizu” is a service that allows you to browse historical maps with a “modern map design.” https://rekichizu.jp/ Background I participated in the following conference and learned about “Rekichizu.” I would like to thank the people involved in developing “Rekichizu,” everyone who organized the conference, and Professor Asanobu Kitamoto for teaching me how to use it. ...

This is a memo on how to use Maplat, a historical map viewer library. https://github.com/code4history/Maplat In addition to the above GitHub repository, the following Qiita articles are also helpful. https://qiita.com/tags/maplat?page=1 Downloading MaplatEditor Download the latest version of MaplatEditor from the following page. https://github.com/code4history/MaplatEditor/wiki Creating Data Launch the installed MaplatEditor and click the “New” button. Enter the required metadata. The items shown in the figure below are mandatory fields. ...