Overview

In the following article, I explained how to build an IIIF Image Server using an AWS serverless application.

This time, I register a relatively large image and verify whether tile image delivery is possible.

Target

This time, the target is “Mining Claim Maps” (held by the University of Tokyo Komaba Library).

https://iiif.dl.itc.u-tokyo.ac.jp/repo/s/ichiko/document/4120a330-2f1c-4e2c-5d48-21aed4d42704

The original image is a TIF file of nearly 300 MB.

Creating Pyramidal Tiled TIFF

Referencing the following site, I tried both VIPS and ImageMagick.

https://github.com/samvera-labs/serverless-iiif#creating-tiled-tiffs

Using VIPS

vipstiffsavesource_image.tifoutput_image.tif-tile-pyramid-compressionjpeg-tile-width256-tile-height256

Using ImageMagick

convertsource_image.tif-definetiff:tile-geometry=256x256-compressjpeg'ptif:output_image.tif'

As a result, the VIPS version was 35.6 MB and the ImageMagick version was 107.4 MB.

IIIF Image URLs

The respective IIIF image URLs are as follows.

VIPS

https://iiif3.a-ldas.com/iiif/2/kakezu_v/info.json

ImageMagick

https://iiif3.a-ldas.com/iiif/2/kakezu/info.json

Display in an Image Viewer

This time, I used Image Annotator (created by Masahide Kanzaki), which can load IIIF image URLs.

VIPS

https://www.kanzaki.com/works/2016/pub/image-annotator?u=https%3A%2F%2Fiiif3.a-ldas.com%2Fiiif%2F2%2Fkakezu_v%2Finfo.json

ImageMagick

https://www.kanzaki.com/works/2016/pub/image-annotator?u=https%3A%2F%2Fiiif3.a-ldas.com%2Fiiif%2F2%2Fkakezu%2Finfo.json

Results

In both cases above, the images were displayed successfully (though loading took some time in certain cases).

I hope these experimental results serve as a useful reference.