Fork of openjpeg library for JPEG2000 encoding and decoding https://git.carlh.net/cgit/openjpeg/atom?h=v2.4.0 2020-11-30T21:31:51Z 2020-11-30T21:31:51Z Even Rouault even.rouault@spatialys.com 2020-11-30T21:31:51Z urn:sha1:b2072402b7e14d22bba6fb8cde2a1e9996e9a919 2020-10-09T11:25:27Z Even Rouault even.rouault@spatialys.com 2020-10-09T11:25:27Z urn:sha1:491299eb073c80602ca8ee333303a31a581d3fa8 Single-threaded performance improvements in forward DWT for 5-3 and 9-7 (and other improvements) 2020-09-23T09:34:31Z Pei JIA jiapei@longervision.com 2020-09-23T09:34:31Z urn:sha1:65c8f577d2f057e80040e98958eae80ca76c6b94 2020-06-30T19:31:19Z Even Rouault even.rouault@spatialys.com 2020-06-28T12:19:59Z urn:sha1:e8e258ab049240c2dd1f1051b4e773b21e2d3dc0 Fixes #1261 Credits to @Ruia-ruia for reporting and analysis. 2020-05-20T18:30:21Z Even Rouault even.rouault@spatialys.com 2020-04-29T09:50:17Z urn:sha1:97eb7e0bf17b476d516262e0af462ec7eeb8f505 - API wise, opj_codec_set_threads() can be used on the encoding side - opj_compress has a -threads switch similar to opj_uncompress 2020-04-21T13:55:44Z Even Rouault even.rouault@spatialys.com 2020-04-21T13:55:44Z urn:sha1:4edb8c83374f52cd6a8f2c7c875e8ffacccb5fa5 * -PLT switch added to opj_compress * Add a opj_encoder_set_extra_options() function that accepts a PLT=YES option, and could be expanded later for other uses. ------- Testing with a Sentinel2 10m band, T36JTT_20160914T074612_B02.jp2, coming from S2A_MSIL1C_20160914T074612_N0204_R135_T36JTT_20160914T081456.SAFE Decompress it to TIFF: ``` opj_uncompress -i T36JTT_20160914T074612_B02.jp2 -o T36JTT_20160914T074612_B02.tif ``` Recompress it with similar parameters as original: ``` opj_compress -n 5 -c [256,256],[256,256],[256,256],[256,256],[256,256] -t 1024,1024 -PLT -i T36JTT_20160914T074612_B02.tif -o T36JTT_20160914T074612_B02_PLT.jp2 ``` Dump codestream detail with GDAL dump_jp2.py utility (https://github.com/OSGeo/gdal/blob/master/gdal/swig/python/samples/dump_jp2.py) ``` python dump_jp2.py T36JTT_20160914T074612_B02.jp2 > /tmp/dump_sentinel2_ori.txt python dump_jp2.py T36JTT_20160914T074612_B02_PLT.jp2 > /tmp/dump_sentinel2_openjpeg_plt.txt ``` The diff between both show very similar structure, and identical number of packets in PLT markers Now testing with Kakadu (KDU803_Demo_Apps_for_Linux-x86-64_200210) Full file decompression: ``` kdu_expand -i T36JTT_20160914T074612_B02_PLT.jp2 -o tmp.tif Consumed 121 tile-part(s) from a total of 121 tile(s). Consumed 80,318,806 codestream bytes (excluding any file format) = 5.329697 bits/pel. Processed using the multi-threaded environment, with 8 parallel threads of execution ``` Partial decompresson (presumably using PLT markers): ``` kdu_expand -i T36JTT_20160914T074612_B02.jp2 -o tmp.pgm -region "{0.5,0.5},{0.01,0.01}" kdu_expand -i T36JTT_20160914T074612_B02_PLT.jp2 -o tmp2.pgm -region "{0.5,0.5},{0.01,0.01}" diff tmp.pgm tmp2.pgm && echo "same !" ``` ------- Funded by ESA for S2-MPC project 2020-04-16T22:37:33Z szukw000 szukw000@arcor.de 2020-04-16T22:37:33Z urn:sha1:b6b7e96b0cf7819ef6a2e8ba2f8bdaaf938326ed 2020-04-16T22:09:40Z Eduardo Barretto edusbarretto@gmail.com 2020-04-16T22:09:40Z urn:sha1:040e142288e90c9c2d46d25d0a27f828f968bb93 This issues were found by cppcheck and coverity. 2020-04-01T19:11:36Z Even Rouault even.rouault@spatialys.com 2020-04-01T18:58:55Z urn:sha1:1c54024165fd5db0e6047f28903274eb27d0980f Prevent crashes like: opj_decompress -i 0722_5-1_2019.jp2 -o out.ppm -r 4 -t 0 where 0722_5-1_2019.jp2 is https://drive.google.com/file/d/1ZxOUZg2-FKjYwa257VFLMpTXRWxEoP0a/view?usp=sharing 2020-02-13T08:59:36Z Even Rouault even.rouault@spatialys.com 2020-02-13T08:59:17Z urn:sha1:563ecfb55ca77c0fc5ea19e4885e00f55ec82ca9