Fork of openjpeg library for JPEG2000 encoding and decoding https://git.carlh.net/cgit/openjpeg/atom?h=master-cdist 2020-06-07T21:48:58Z 2020-06-07T21:48:58Z Carl Hetherington cth@carlh.net 2020-06-07T21:48:58Z urn:sha1:f9924f062b08ed27e2cfd38a696dee48faebefd6 2020-05-20T19:10:55Z Even Rouault even.rouault@spatialys.com 2020-05-20T19:10:55Z urn:sha1:19ef7f26c43f689b627aad642da7f6150893b863 Add check to validate SGcod/SPcoc/SPcod parameter values. 2020-05-20T18:29:31Z Even Rouault even.rouault@spatialys.com 2020-05-20T18:29:31Z urn:sha1:1d358f25c8eabbc7c274bcc148f4f5d594ec13fe Add support for generation of PLT markers in encoder 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 2020-04-18T16:25:44Z Even Rouault even.rouault@spatialys.com 2020-04-18T16:25:44Z urn:sha1:64689d05dfaaf52105581d93fb1eb173b20829a4 2020-04-16T22:39:46Z Even Rouault even.rouault@spatialys.com 2020-04-16T22:39:46Z urn:sha1:774889a328abd5d3c280d9a897f1ac4c672cb0e5 Fix warnings about signed/unsigned casts in pi.c 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. 2020-04-16T21:34:10Z Even Rouault even.rouault@spatialys.com 2020-04-16T18:52:44Z urn:sha1:271a71ef0f1dd4740c9f4474279c7da8d15850c9 2020-04-16T18:33:22Z Even Rouault even.rouault@spatialys.com 2020-04-16T18:33:22Z urn:sha1:221a801a97a3ea968a311f7905c18a1eb7f034c4