openjpeg/src/lib/openjp2/t2.h, branch master Fork of openjpeg library for JPEG2000 encoding and decoding https://git.carlh.net/cgit/openjpeg/atom?h=master 2020-04-21T13:55:44Z 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 Sub-tile decoding: only decode precincts and codeblocks that intersect the window specified in opj_set_decode_area() 2017-08-17T17:05:54Z Even Rouault even.rouault@spatialys.com 2017-08-14T11:23:57Z urn:sha1:fe338a057c39797bf61939471ebaef09e44464c7 opj_t2_encode_packet(): only emit an error about insufficiently large output buffer in FINAL_PASS mode. Fixes (master-only) regression added in 0b4fef6d1901254e41ab74ed681daba477d724c3 2017-08-16T10:52:33Z Even Rouault even.rouault@spatialys.com 2017-08-16T10:52:33Z urn:sha1:9624b2fa4722edf77fbac631e7dacaae12c91672 Propagate event manager down to opj_t2_encode_packet() and use it to emit an error message when the output buffer is too small 2017-08-10T14:49:47Z Even Rouault even.rouault@spatialys.com 2017-08-10T14:49:47Z urn:sha1:0b4fef6d1901254e41ab74ed681daba477d724c3 src/lib/openjp2/*.h: use OPJ_ prefix for inclusion guards instead of reserved __ (#587) 2017-07-30T17:46:52Z Even Rouault even.rouault@spatialys.com 2017-07-30T17:46:52Z urn:sha1:13cde9fa37249628af6b6f10601b733f87a025f4 Fix Doxygen warnings (patch derived from Winfried's doxygen-dif.txt.zip, #849) 2017-07-30T16:18:59Z Even Rouault even.rouault@spatialys.com 2017-07-30T16:18:59Z urn:sha1:83342f2aafcab4599b49f780e35fd249e8402b61 Reformat: apply reformattin on .h files (#128) 2017-05-15T10:21:30Z Even Rouault even.rouault@spatialys.com 2017-05-15T10:21:30Z urn:sha1:3c2972f924857016bb454201c7e92f25de9105ee Remove printf/fprintf to stdout/stderr throughout openjp2 lib 2015-07-30T21:26:31Z mayeut mayeut@users.noreply.github.com 2015-07-30T21:26:31Z urn:sha1:0df90afdf743c85fe943041f5716ca072b4678d1 Update uclouvain/openjpeg#246 [trunk] updated copyright and added copyright notice required by ISO, in each file; updated AUTHORS, NEWS 2014-04-03T15:30:57Z Antonin Descampe antonin@gmail.com 2014-04-03T15:30:57Z urn:sha1:d19a4ab6768c48b542c0add922eba0dcddae9ffe [trunk]update the copyright, the authors and thanks to respect the license 2012-11-15T15:22:29Z Mickael Savinaud savmickael@users.noreply.github.com 2012-11-15T15:22:29Z urn:sha1:d5efeb7df5ba7d5c2d984678cc11ae64b43933b4