Hi Yi,
GDAL use the RPC which it report by gdalinfo. If gdalinfo reports old
RPC, you have to clean them from dataset. It seem's to me that rpb
(*_rpc.txt, etc.) files accepted only on GeoTIFF and TILL formats. On
GDAL 2.0 also jp2 added. So NITF is not a right format for use external
RPC. So, first of all try to gdal_translate you format to GTiff, and
than try to create so-name rpb file.
Best regards,
Dmitry
15.06.2015 21:18, Yi Dong пишет:
Dear List,
I have a question about recitify satellite images that has RPC camera
using gdalwarp. I know gdalwarp can be used for this task, with using
RPC metadata (either packed inside the NITF or stored inside RPB files)
Normally, the image folder shall contain following files
input.ntf
input.rpb
input.imd
etc...
The command I used for this is
gdalwarp -rpc input.ntf -to RPC_HEIGHT=200 rectified.tif
Now I performed some geo-correction on the satellite image and
generate a corrected RPC model (with imporved offset values) and I
store this correct RPC camera in 'correct.rpb'. Now I am trying to
use this 'correct.rpb' to recitify the image
I tried
gdalwarp -rpc input.ntf correct.rpb -to RPC_HEIGHT=200
recitify_corrected.tif
but it failed with following error
ERROR 4: 'correct.rpb' not recognized as a supported file format
Then I tried to overwrite the 'input.rpb' in the image folder with my
'corrected.rpb', run 'gdalwarp -rpc input.ntf -to RPC_HEIGHT=200
rectified.tif' again but I got exactly same results as I used the
original RPC model. I guess that might be because gdalwarp used RPC
parameter that was packed inside NITF image itself, instead of getting
them from rpb files ?
So Is there other way to use my corrected RPC model in gdal, like
gdalwarp, gdal_transform, etc.?
Also, gdaltransform doesn't not accept RPB files either. It only
recognizes GDAL dataset, i.e. vrt file. Therefore I need to generate
vrt file from my RPB. Is there any vrt example for RPC camera that I
can follow?
Thanks a lot
Ian
_______________________________________________
gdal-dev mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/gdal-dev
_______________________________________________
gdal-dev mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/gdal-dev
