[gdal-dev] IIP: unable to translate if handled by openseadragon
Carlo A. Bertelli (Charta s.r.l.)
bertelli at chartasrl.eu
Tue Sep 3 14:23:07 PDT 2024
Hello,
I tried to use GDAL to translate an iIIF image:
https://ianua.arianna4.cloud/patrimonio/1ec6a87e-c5ff-4156-a495-9e08f399a6ba/16-carta-topografica-del-territorio-di-serravalle-%5B1804-set-22%5D
OpenSeaDragon disables the direct link to the tiles, substituting it with
an indirect connection to the image server:
https://asge.jarvis.memooria.org/images/iiif/db/d4eca4e9-d5e9-4db7-9586-9ec0ff49d8c4/0,0,2048,2048/256,256/0/default.jpg
I couldn't manage to get something out of it with the IIP WMS micro-driver.
A hint, suggested by the documentation of OpenSeaDragon, led me to:
https://asge.jarvis.memooria.org/images/iiif/db/d4eca4e9-d5e9-4db7-9586-9ec0ff49d8c4/info.json
which is informative:
{
"@context" : "http://iiif.io/api/image/3/context.json",
"protocol" : "http://iiif.io/api/image",
"width" : 8721,
"height" : 13120,
"sizes" : [
{ "width" : 136, "height" : 205 },
{ "width" : 272, "height" : 410 },
{ "width" : 545, "height" : 820 },
{ "width" : 1090, "height" : 1640 },
{ "width" : 2180, "height" : 3280 },
{ "width" : 4360, "height" : 6560 }
],
"tiles" : [
{ "width" : 256, "height" : 256, "scaleFactors" : [ 1, 2, 4, 8,
16, 32, 64 ] }
],
"id" : "https://asge.jarvis.memooria.org/images/iiif/db/d4eca4e9-d5e9-4db7-9586-9ec0ff49d8c4",
"type": "ImageService3",
"profile" : "level1",
"maxWidth" : 8000,
"maxHeight" : 8000,
"extraQualities": ["color","gray","bitonal"],
"extraFeatures":
["regionByPct","sizeByForcedWh","sizeByWh","sizeAboveFull","sizeUpscaling","rotationBy90s","mirroring"],
"service": [
{
"@context": "http://iiif.io/api/annex/services/physdim/1/context.json",
"profile": "http://iiif.io/api/annex/services/physdim",
"physicalScale": 0.1,
"physicalUnits": "cm"
}
]
}
But I couldn't go further.
TIA for any help
c
--
--------------------------------------------------------------------------
Carlo A. Bertelli
Charta servizi e sistemi per il territorio e la storia ambientale srl
Dipendenze del palazzo Doria,
vc. alla Chiesa della Maddalena 9/2 16124 Genova (Italy)
tel./fax +39(0)10 2475439 +39 0108566195 mobile:+39 393 1590711
e-mail: bertelli at chartasrl.eu http://www.chartasrl.eu
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