[gdal-dev] NITF Header data

Dan Greve grevedan at hotmail.com
Wed Dec 17 10:50:56 EST 2008


I would think it makes sense to return these two fields as metadata, specifically IGEOLO, since IGEOLO might not be returned as a geotransform (such as in the case when BlockA or other higher precision georeferencing is available).

-- Dan Greve

> Date: Tue, 16 Dec 2008 12:01:05 -0500
> From: warmerdam at pobox.com
> To: cjanssen at iavo-rs.com
> Subject: Re: [gdal-dev] NITF Header data
> CC: gdal-dev at lists.osgeo.org
> 
> Christiaan Janssen wrote:
> > Does anyone know if it is possible to access any more of the NITF 
> > header data than what is currently listed in the GDAL dataset metadata? 
> > There are a number of fields that I have noticed missing, namely ICORDS 
> > & IGEOLO that I could really use. I realize that these are image 
> > subheader components but it would seem to make sense that a GDAL dataset 
> > represents a single NITF subimage and that it would contain the subimage 
> > specific metadata. Any help is greatly appreciated, thanks.
> 
> Christiaan,
> 
> The IGEOLO and ICORDS data are not normally returned as NITF specific
> metadata because they are transformed into a generic geotransform and
> coordinate system definition.
> 
> If it is particularly useful, they could also be returned in raw form as
> metadata items.
> 
> Best regards,
> -- 
> ---------------------------------------+--------------------------------------
> I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
> light and sound - activate the windows | http://pobox.com/~warmerdam
> and watch the world go round - Rush    | Geospatial Programmer for Rent
> 
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