On Wednesday 31 of July 2013 11:55:27 Nikos Alexandris wrote: > Yet another NITF related "problem". An ntf file contains (no SUBDATASETS) > > gdalinfo -nogcp -nomd -mm M1BS.ntf > > ,--%<--- > Band 1 Block=1024x1024 Type=UInt16, ColorInterp=Blue > Computed Min/Max=183.000,2047.000 > Overviews: 3438x3448, 1719x1724, 859x862, 429x431, 214x215 > Overviews: arbitrary > Band 2 Block=1024x1024 Type=UInt16, ColorInterp=Green > Computed Min/Max=252.000,2047.000 > Overviews: 3438x3448, 1719x1724, 859x862, 429x431, 214x215 > Overviews: arbitrary > Band 3 Block=1024x1024 Type=UInt16, ColorInterp=Red > Computed Min/Max=86.000,2047.000 > Overviews: 3438x3448, 1719x1724, 859x862, 429x431, 214x215 > Overviews: arbitrary > Band 4 Block=1024x1024 Type=UInt16, ColorInterp=Alpha > Computed Min/Max=50.000,2047.000 > Overviews: 3438x3448, 1719x1724, 859x862, 429x431, 214x215 > Overviews: arbitrary > `--->%-- > > > Attempting to warp the data with the -rpc switch and convert to GeoTIFF, > begins with > > "Using band 4 of source image as alpha." > > > This results in an "empty" NIR band in the GeoTIFF file. > > ,--%<--- > Band 1 Block=6728x1 Type=UInt16, ColorInterp=Gray > Computed Min/Max=0.000,2047.000 > Band 2 Block=6728x1 Type=UInt16, ColorInterp=Undefined > Computed Min/Max=0.000,2047.000 > Band 3 Block=6728x1 Type=UInt16, ColorInterp=Undefined > Computed Min/Max=0.000,2047.000 > Band 4 Block=6728x1 Type=UInt16, ColorInterp=Undefined > Computed Min/Max=0.000,0.000 > `--->%-- > > > No success using '-co "ALPHA=NO"'. Same "problem" when using gdal_translate > on the whole ntf file. However, instructing > > gdal_translate -b 4 M1BS.ntf b4.tif > > > gives > > gdalinfo -nogcp -nomd -mm b4.tif > > ,--%<--- > Band 1 Block=6876x1 Type=UInt16, ColorInterp=Gray > Computed Min/Max=50.000,2047.000 > `--->%-- > > > But, this is not "fine". How is this to be done correctly, RPC-based warping > and conversion in one go?
Related thread/solution: http://lists.osgeo.org/pipermail/gdal-dev/2012-December/034984.html Translating to a VRT, band by band -- is it the only solution? Nikos _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
