Significant speed-up rate allocation by rate/distoratio ratio #1440
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…write() to emit single bit
- Avoid doing 128 iterations all the time, and stop when the threshold doesn't vary much - Avoid calling costly opj_t2_encode_packets() repeatdly when bisecting the layer ratio if the truncation points haven't changed since the last iteration. When used with the GDAL gdal_translate application to convert a 11977 x 8745 raster with data type UInt16 and 8 channels, the conversion time to JPEG2000 with 20 quality layers using disto/rate allocation ( -co "IC=C8" -co "JPEG2000_DRIVER=JP2OPENJPEG" -co "PROFILE=NPJE_NUMERICALLY_LOSSLESS" creation options of the GDAL NITF driver) goes from 5m56 wall clock (8m20s total, 12 vCPUs) down to 1m16 wall clock (3m45 total).
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Mar 12, 2024
- Update from version 2.5.0 to 2.5.2
- Update of rootfile
- Changelog
2.5.2 (Feb 2024)
No API/ABI break compared to v2.5.1
* Make sure openjpeg.h includes opj_config.h [\#1514](uclouvain/openjpeg#1514)
2.5.1 (Feb 2024)
No API/ABI break compared to v2.5.0
* CMake: drop support for cmake < 3.5
* Several bugfixes, including [\#1509](uclouvain/openjpeg#1509) for CVE-2021-3575
* Significant speed-up rate allocation by rate/distoratio ratio [\#1440](uclouvain/openjpeg#1440)
Signed-off-by: Adolf Belka <[email protected]>
Signed-off-by: Michael Tremer <[email protected]>
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doesn't vary much
layer ratio if the truncation points haven't changed since the last
iteration.
When used with the GDAL gdal_translate application to convert a 11977 x
8745 raster with data type UInt16 and 8 channels, the conversion time
to JPEG2000 with 20 quality layers using disto/rate allocation (
-co "IC=C8" -co "JPEG2000_DRIVER=JP2OPENJPEG" -co "PROFILE=NPJE_NUMERICALLY_LOSSLESS"
creation options of the GDAL NITF driver) goes from 5m56 wall clock
(8m20s total, 12 vCPUs) down to 1m16 wall clock (3m45 total).
to be compared to 34s wall clock (3m5 total) for single quality layer output.