Hi,
yes, in the 3.3 branch and earlier, there was no tunable to ask for
lossless JPEG2000 compression
If you use GDAL master, you can now use the
PROFILE=NPJE_NUMERICALLY_LOSSLESS option for that
Even
Le 30/08/2021 à 17:16, Chastain, Raymond Lee (MU-Student) a écrit :
We're trying to create NITFs with lossless compression using the
OpenJPEG driver for JPEG2000 compression.
We've set the "QUALITY=100" creation option but are still noticing
that repeated conversions generate different perceptual image hashes.
The OpenJPEG driver mentions "REVERSIBLE=YES" but that doesn't seem to
be a valid creation option for the NITF driver.
Sample gdal_translate command:
"gdal_translate -of NITF -co IC=C8 -co BLOCKXSIZE=256 -co
BLOCKYSIZE=256 -co SDE_TRE=YES -co QUALITY=100 sample.tif reversible.nitf"
Am I going about this the right way?
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