Le 16/06/2021 à 19:53, GeodudeKid a écrit :
We can refer to this: https://en.wikipedia.org/wiki/Lossless_JPEG. "Besides lossless compression, JPEG-LS also provides a lossy mode ("near-lossless") where the maximum absolute error can be controlled by the encoder." That being said, would the existing JPEGLS driver be able to support lossless and lossy input imagery?
Its capabilities should match the ones of https://github.com/team-charls/charls :
"This project's goal is to provide a full implementation of the ISO/IEC 14495-1:1999, "Lossless and near-lossless compression of continuous-tone still images: Baseline" standard."
But I'm not aware of Lossless JPEG (not sure which variant NITF refers to, if it is the " 1993 addition to JPEG standard " or JPEG-LS ISO-14495-1/ITU-T.87) being actually used in practice with NITF (at least I've never seen such beast). People generally use either good-old JPEG or JPEG-2000 if they want compression.
Even -- http://www.spatialys.com My software is free, but my time generally not. _______________________________________________ gdal-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/gdal-dev
