[gdal-dev] Creating external overviews for JP2 files?

[jratike80]

alpa wrote
> Thanks for your reply,
> 
> My bad, probably copy-pasting mistake. I've re-run the commands:
> 
> Just to be sure I exported the GDAL_SKIP env var as well:
> 
> export GDAL_SKIP=JP2OpenJPEG
> gdalinfo --formats
> ...
>   ERS -raster- (rw+v): ERMapper .ers Labelled
>   JP2KAK -raster,vector- (rwv): JPEG-2000 (based on Kakadu *v7.10.4*)
>   JPIPKAK -raster- (ro): JPIP (based on Kakadu)
>   L1B -raster- (rovs): NOAA Polar Orbiter Level 1b Data Set
> ...
> (No JP2OpenJPEG, by the way, I am using Kakadu 7.10.4)
> 
> Looks like gdal_translate is producing a 0-filled raster:
> 
> gdal_translate -outsize 50% 50% -co TILED=YES -co COMPRESS=JPEG -co
> PHOTOMETRIC=YCBCR  ./T34WEB_20181015T104021_TCI_10m.jp2
> ./T34WEB_20181015T104021_TCI_10m.jp2.ovr *--config GDAL_SKIP JP2OpenJPEG*

Hi,

I used your command for one of our orthophoto .jp2 files with these drivers

  gdalinfo --formats|find "JP2"
  JP2ECW -raster,vector- (rov): ERDAS JPEG2000 (SDK 5.3)
  JP2MrSID -raster- (rov): MrSID JPEG2000
  JP2OpenJPEG -raster,vector- (rwv): JPEG-2000 driver based on OpenJPEG
library

The resulting half-dimensioned GeoTIFF is good with all drivers. Without
having a recent Kakadu driver available I fear that I can't test anything
more.
If your build suppors debug messages you can have a new try by adding
"--debug on" into your gdal_translate command.

-Jukka Rahkonen-





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