If I gdal_translate the files to ‘geotif’ first, they are correctly positioned on the map. Why is that?? Why doesn’t geoserver understand the NITF if GDAL clearly can?
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From: Smart, Gary Export License Required - US UTAS [mailto:Gary.Smart@…7257…]
Sent: 22 September 2015 18:17
To: Daniele Romagnoli
Cc: geoserver-users@lists.sourceforge.net
Subject: Re: [Geoserver-users] [External] Re: NITF files incorrectly georeferenced
I don’t think I have ever seen a NITF output from GDAL which reports anything on the line ‘Coordinate System is:’ – I was under the impression that the wealth of information below described the Coordinate System.
I was also under the impression that geoserver could import random NITF images (these are large NADIR views) and serve them through the WMS (i.e. presumably using GDAL to orthorectify the imagery en-route). To do this, I thought it used the four corner georeferencing clearly contained in this NITF file and all the others I have.
Is this not the case? I can see the images using the ‘layer preview’ tool, so I presume it can serve them somehow – and they look warped as required. But they just seem to be in the wrong place on the Earth!
From: dany.geotools@…84… [mailto:dany.geotools@…84…] On Behalf Of Daniele Romagnoli
Sent: 22 September 2015 16:29
To: Smart, Gary Export License Required - US UTAS
Cc: geoserver-users@lists.sourceforge.net
Subject: [External] Re: [Geoserver-users] NITF files incorrectly georeferenced
Hi,
it seems like gdalinfo itself is unable to recognize the Coordinate Reference System of your sample.
Driver: NITF/National Imagery Transmission Format
Files: blah.ntf
Size is 5120, 10464
Coordinate System is `’ <------ EMPTY
Moreover, the gdalinfo shows that your file isn’t georectified: it contains ground control points (the reported WGS84 CRS is for the GCPs).
Therefore the sample is handled like a simple image (let’s say as a picture) using a Wildcard 2D Cartesian plane so that you can express coordinates as pixels positions.
You could consider using gdalwarp to georectify your samples so that they become valid for GeoServer.
Hope this helps.
Cheers,
Daniele
On Tue, Sep 22, 2015 at 4:45 PM, Smart, Gary Export License Required - US UTAS <Gary.Smart@…7257…> wrote:
I am trying to create a layer, either from a mosaic of NITF files, or even just a single NITF file. Some NITF files seem to work OK, but I have a many NITF2.1 files which have valid georeferencing but which fail to either mosaic or even load as separate NITF files. It is as if the NITF georeferencing is not being used.
When using the mosaic method, the store ‘.prj’ file ends up with:
LOCAL_CS[“Wildcard 2D cartesian plane in metric unit”, LOCAL_DATUM[“Unknown”, 0], UNIT[“m”, 1.0], AXIS[“x”, EAST], AXIS[“y”, NORTH], AUTHORITY[“EPSG”,“404000”]] which doesn’t look right given that the NITF gdalinfo’s are all close to…
Driver: NITF/National Imagery Transmission Format
Files: blah.ntf
Size is 5120, 10464
Coordinate System is `’
GCP Projection =
GEOGCS[“WGS 84”,
DATUM[“WGS_1984”,
SPHEROID[“WGS 84”,6378137,298.257223563,
AUTHORITY[“EPSG”,“7030”]],
TOWGS84[0,0,0,0,0,0,0],
AUTHORITY[“EPSG”,“6326”]],
PRIMEM[“Greenwich”,0,
AUTHORITY[“EPSG”,“8901”]],
UNIT[“degree”,0.0174532925199433,
AUTHORITY[“EPSG”,“9108”]],
AUTHORITY[“EPSG”,“4326”]]
GCP[ 0]: Id=UpperLeft, Info=
(0.5,0.5) → (1.292,52.662,0)
GCP[ 1]: Id=UpperRight, Info=
(5119.5,0.5) → (1.315,52.662,0)
GCP[ 2]: Id=LowerRight, Info=
(5119.5,10463.5) → (1.309,52.633,0)
GCP[ 3]: Id=LowerLeft, Info=
(0.5,10463.5) → (1.29,52.633,0)
Metadata:
NITF_ABPP=10
NITF_CCS_COLUMN=0
NITF_CCS_ROW=0
NITF_CLEVEL=06
NITF_ENCRYP=0
NITF_FBKGC= 48, 48, 48
NITF_FDT=20150922084921
NITF_FHDR=NITF02.10
NITF_FSCATP=O
NITF_FSCAUT=DGIC UK
NITF_FSCLAS=U
NITF_FSCLSY=UK
NITF_FSCLTX=
NITF_FSCODE=
NITF_FSCOP=00000
NITF_FSCPYS=00000
NITF_FSCRSN=
NITF_FSCTLH=
NITF_FSCTLN=
NITF_FSDCDT=
NITF_FSDCTP=O
NITF_FSDCXM=
NITF_FSDG=
NITF_FSDGDT=
NITF_FSREL=UK US
NITF_FSSRDT=
NITF_FTITLE=For map demo
NITF_IALVL=0
NITF_IC=NC
NITF_ICAT=EO
NITF_ICORDS=D
NITF_IDATIM=20020718092745
NITF_IDLVL=1
NITF_IGEOLO=+52.662+001.292+52.662+001.315+52.633+001.309+52.633+001.290
NITF_IID1=B014.F0003
NITF_IID2=18JUL029Z0000012ZX0E0003ZZ000A3856011611
NITF_ILOC_COLUMN=0
NITF_ILOC_ROW=0
NITF_IMAG=1.0
NITF_IMODE=B
NITF_IREP=MONO
NITF_ISCATP=O
NITF_ISCAUT=DGIC UK
NITF_ISCLAS=U
NITF_ISCLSY=UK
NITF_ISCLTX=
NITF_ISCODE=
NITF_ISCRSN=
NITF_ISCTLH=
NITF_ISCTLN=
NITF_ISDCDT=
NITF_ISDCTP=O
NITF_ISDCXM=
NITF_ISDG=
NITF_ISDGDT=
NITF_ISORCE= Ground Station
NITF_ISREL=UK US
NITF_ISSRDT=
NITF_ONAME=
NITF_OPHONE=
NITF_OSTAID=Ground Stn
NITF_PJUST=R
NITF_PVTYPE=INT
NITF_STYPE=BF01
NITF_TGTID=
Corner Coordinates:
Upper Left ( 0.0, 0.0)
Lower Left ( 0.0,10464.0)
Upper Right ( 5120.0, 0.0)
Lower Right ( 5120.0,10464.0)
Center ( 2560.0, 5232.0)
Band 1 Block=512x512 Type=UInt16, ColorInterp=Gray
I can view the NITF files and georeference them using GeoView and our own NITF viewer. I can preview the layer containing a single NITF file (in geoserver) but the georeferencing seems to be rubbish (perhaps origin at zero zero) even though the IGEOLO seems sound.
Any ideas?
Note that the mosaic tool crashes with (no too surprisingly) ‘No transformation available from system “EngineeringCRS[Wildcard 2D Cartesian plan in metric unit]” to “GeographicCRS[WGS84(DD)]”’
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