[gdal-dev] Extracting Jpeg2000 image from nitf file

[Even Rouault]

Hi,

if you open such an image with debug traces (CPL_DEBUG=ON), you'll see 
something like

GDAL: GDALOpen(/vsisubfile/907_565,byte.ntf, this=....) succeeds as 
JP2OpenJPEG

which means that the JPEG2000 file starts at byte 907 with a length of 
565 bytes.

Programatically from C/C++ , you could use the GDALGetOpenDatasets() 
methods after having opening the NITF file, and look for /vsisubfile/ files

Even

Le 26/05/2023 à 08:57, Tobby Moalem a écrit :
> Hi,
> For my understanding the nitf file is used as container, where 
> compressed jpeg2000 can be saved inside the nitf file.
> I wonder if there is a way to use gdal to extract the jpeg2000 part 
> and save it separately (with extension of .j2c or other jpeg2000 
> extensions) ?
>
> Thanks in advance,
> Tobby
>
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