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NITF Metadata

You can edit the following metadata for images with the NITF output format:

For more information on NITF metadata, see the NITF 2.1 specification at http://www.gwg.nga.mil/ntb/baseline/docs/2500c/2500C.pdf.

Viewable NITF Metadata

In addition to the NITF metadata that you can edit, GeoExpress embeds metadata from NITF input files to preserve the source metadata. When reading a NITF file, GeoExpress stores many NITF fields as metadata, for example as tag/value pairs in MrSID imagery.

The following discussion assumes familiarity with the NITF specification.

In general, the tag name is of the form

NITF::xxnnn::field

where xx is a two letter code representing the NITF segment (IM for image, FH for file header) and nnn is the NITF segment number. TRE fields contain the prefix TRE_. Specifically, GeoExpress stores input fields in metadata tags as described in the following tables.

File Header Fields

GeoExpress stores file header fields in the following tags:

NITF Field GeoExpress Tag
FHDR NITF::FH000::FHDR
FVER NITF::FH000::FVER
STYPE NITF::FH000::STYPE
OSTAID NITF::FH000::OSTAID
FDT NITF::FH000::FDT
FTITLE NITF::FH000::FTITLE
ONAME nitf::fh000::oname
OPHONE nitf::fh000::ophone
NUMI nitf::fh000::numi
NUMS nitf::fh000::nums
NUML nitf::fh000::numl
NUMT nitf::fh000::numt
numdes nitf::fh000::numdes
numres nitf::fh000::numres

Using GeoExpress, you can set the values for OSTAID, FDT, FTITLE, ONAME, and OPHONE when encoding NITF images.

Security-Related Fields

GeoExpress stores security-related fields from the file header (unless they are blanks) in the following tags:

NITF Field GeoExpress Tag
sclas NITF::FH000::sclas
sclsy NITF::FH000::sclsy
scode NITF::FH000::scode
sctlh NITF::FH000::sctlh
srel NITF::FH000::srel
sdctp NITF::FH000::sdctp
sdcdt nitf::fh000::sdcdt
sdcxm nitf::fh000::sdcxm
sdg nitf::fh000::sdg
sdgdt nitf::fh000::sdgdt
scltx nitf::fh000::scltx
scatp nitf::fh000::scatp
scaut nitf::fh000::scaut
scrsn nitf::fh000::scrsn
ssrdt nitf::fh000::ssrdt
sctln nitf::fh000::sctln

GeoExpress allows you to specify values for any of these fields.

Image Segment Fields

GeoExpress stores image segment fields in the following tags:

NITF Field GeoExpress Tag
iid1 NITF::im001::iid1
idatim nitf::im001::idatim
tgtid nitf::im001::tgtid
iid2 nitf::im001::iid2
isorce nitf::im001::isorce
icords nitf::im001::icords
igeolo nitf::im001::igeolo
nicom nitf::im001::nicom
icom1 nitf::im001::icom1
icom2 nitf::im001::icom2
icom3 nitf::im001::icom3
icom4 nitf::im001::icom4
icom5 nitf::im001::icom5
icom6 nitf::im001::icom6
icom7 nitf::im001::icom7
icom8 nitf::im001::icom8
icom9 nitf::im001::icom9

With GeoExpress, you can enter custom data for these image segment fields: IID1, IDATIM, TGTID, IID2, ISORCE, NICOM, ICOM1 through ICOM9.

Additional Notes

In addition, GeoExpress does the following: