2018.05.11 02:39 "Re: [Tiff] LZ4 compression", by Kemp Watson
You may need to define "officially"... the TIFF specification, officially, has not been updated in many years, and all improvements are therefore technically unofficial.
If you mean "added to the libtiff codebase", that would incorporate LZ4 into libtiff, but not into any TIFF standards or other codebases.
You can certainly propose the change, or even simply extend your own implementation - the challenge with libtiff is that with no currently maintained standard, there is no guarantee that other implementors will pick up the changes.
Sad to say, but this is not the first time, and slowly but surely, TIFF is fragmenting, currently moving inexorably from a "file format" to a "container specification" and eventually, as all things must, to die.
W. Kemp Watson
Objective Pathology Services Limited
Halton Data Center
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> On May 10, 2018, at 9:43 PM, fx HAYAKAWA MICHIO <firstname.lastname@example.org> wrote:
I'm new at libtiff mailinglist.
If LZ4 compression was discussed before, sorry for bothering you guys. But, I couldn't find LZ4 discussion in mailing list archive.
I'm wondering there is any plan to officially support LZ4 compression for contone images.
LZ4 is getting popular in file system. It improves decoding performance significantly. That means if TIFF is compressed in LZ4, any TIFF viewer can decode the images significantly faster than flate or LZW compression. Downside is LZ4 is little bit worse in compression ratio. How does it sound?