It costs, but you could try this: https://gdal.org/drivers/raster/jpipkak.html
I have kakadu, but I have never tried the jpip functionality so I can't say how well it works. On Fri, Aug 26, 2022, 5:03 AM Martin <e11904...@student.tuwien.ac.at> wrote: > Hi, > > I want to process JP2 data via vsicurl. Which works so far. > Unfortunately hundreds of requests are sent, even if only the data of one > tile is required. > I understand that due to the structure of a JP2 file multiple requests are > necessary. But it looks like GDAL is searching every single tile > (resulting in ~120 requests). > > Is there a way to reduce the number of requests? > > I have already tried the JP2ECW-ERDAS driver, same result. > > Do I have to configure GDAL in a certain way? > > cmd for request: > > #!/bin/bash > > export GDAL_DISABLE_READDIR_ON_OPEN="YES" > export CPL_VSIL_CURL_ALLOWED_EXTENSIONS="jp2" > export CPL_CURL_VERBOSE="YES" > export GDAL_HTTP_MERGE_CONSECUTIVE_RANGES="YES" > > gdal_translate --debug ON -srcwin 0 0 256 256 /vsicurl/ > http://localhost:8083/T33UWP_20220515T100031_TCI_10m_J2Lmin.jp2 > ./out_subWin.tif > > What options do I need to specify when creating the JP2 file to support > GDAL? > > Currently I use the following options: > > #!/bin/bash > > gdal_translate \ > -of JP2OpenJPEG \ > -co QUALITY=100 \ > -co TLM=YES \ > -co PLT=YES \ > -co PROGRESSION=LRCP \ > -co WRITE_METADATA=YES \ > ../test_data/T33UWP_20220515T100031_TCI_10m.tif \ > ./T33UWP_20220515T100031_TCI_10m_J2Lmin.jp2 > > Some logs: > > [gdal degug output](https://pastebin.com/vTf7tjLJ) > [nginx logs](https://pastebin.com/8bWW15Tp) > [gdalinfo](https://pastebin.com/HWSmypEQ) > [opj_dump](https://pastebin.com/rdYbHEnY) > [kdu_jp2info](https://pastebin.com/atVUfeVx) > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/gdal-dev >
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