[gdal-dev] JPEG2000 via range request

[Norman Barker]

I wrote the original jpipkak driver years ago and it a driver I would
suggest for deprecation but I am no longer involved in j2k development to
know how much it is being used.

You will need a jpip server to use the jpip client. Wavelets are different
to cogs and you will get the benefits of progressive display.

Norman


On Fri, Aug 26, 2022, 5:12 PM Kurt Schwehr <schwehr at gmail.com> wrote:

> 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 <e11904212 at 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)
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