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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