[gdal-dev] Accessing DES in NITF through GDAL

[Brad Hards]

I think there could be value in adding CSSHPB with new code inside GDAL
NITF. See
https://github.com/OSGeo/gdal/blob/master/gdal/frmts/nitf/nitfdes.c#L209

 

Do GLAS/GFM later.

 

Brad

 

From: gdal-dev <gdal-dev-bounces at lists.osgeo.org> On Behalf Of Edson, Adam
Robert
Sent: Friday, 3 April 2020 2:53 AM
To: Even Rouault <even.rouault at spatialys.com>; gdal-dev at lists.osgeo.org
Subject: Re: [gdal-dev] Accessing DES in NITF through GDAL

 

I have been tasked with making GDAL capable of dealing with a new NITF type
(https://calval.cr.usgs.gov/apps/sites/default/files/jacie/BarbaraEckstein.p
df) that has major buy-in from data providers. Due to the ubiquity of GDAL,
making the change at this level will give the most people access.


 
<https://calval.cr.usgs.gov/apps/sites/default/files/jacie/BarbaraEckstein.p
df> The Spectral NITF Implementation Profile (SNIP): A New Standard for
Multispectral and Hyperspectral Imagery Datasets

The NITF Standard (NITFS) consists of a file header and different "segment"
types Some segments may include "tagged record extensions" (TREs), i.e.,
metadata headers

calval.cr.usgs.gov

 

  _____  

From: Even Rouault <even.rouault at spatialys.com
<mailto:even.rouault at spatialys.com> >
Sent: Thursday, April 2, 2020 11:03 AM
To: gdal-dev at lists.osgeo.org <mailto:gdal-dev at lists.osgeo.org>
<gdal-dev at lists.osgeo.org <mailto:gdal-dev at lists.osgeo.org> >
Cc: Edson, Adam Robert <are131 at psu.edu <mailto:are131 at psu.edu> >
Subject: Re: [gdal-dev] Accessing DES in NITF through GDAL 

 

Adam,

 

> I am working with NITF data. How are Data Extension Segments (DES)
accessed

> through GDAL?

 

Complicated topic.

 

TRE stored in DES are reported in the TRE and xml:TRE metadata domains.

 

For generic DES extraction, you need to build GDAL with the ESRI_BUILD macro
enabled, and then they should be reported as Base64 encoded content in the
NITF_DES metadata domain, but I haven't tried such builds recently.

 

Even

 

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