Committee Draft of JPEG XL Image Coding System · HackerPapers discussions

Committee Draft of JPEG XL Image Coding System — mentioned by zorgmonkey

Thu, 13 Apr 2023 22:01:09 GMT

The C++ committee makes draft versions of the standard available for free[0], I've heard that often the last draft before a new standard version is published is almost identical to the published version. It would be awesome if someone involved with JPEG-XL could arrange for the same. Edit: I found https://arxiv.org/abs/1908.03565 but it hasn't been updated since 2019. [0] https://eel.is/c++draft/

Paper and discussion history. A mention is not an endorsement.

Committee Draft of JPEG XL Image Coding System — mentioned by twotwotwo

Mon, 02 Mar 2020 06:14:10 GMT

Thanks, I appreciate the corrections and detail. I was mostly going by the committee draft on the arXiv (https://arxiv.org/abs/1908.03565 ), which still mentioned the quantization constraint (J.3) and a "mathematically lossless" mode (annex O) distinct from modular. "Four formats" was just imprecise wording on my part. The material already public about JPEG XL's design rationale, testing, and so on has been really fun to follow as an outsider. I selfishly hope there's more of it as the work on it and rollout continue. Even with the standard itself public, a lot can be mysterious to those not…

Paper and discussion history. A mention is not an endorsement.

Committee Draft of JPEG XL Image Coding System — mentioned by undecidabot

Sat, 23 Nov 2019 05:55:39 GMT

Slides: https://www.slideshare.net/cloudinarymarketing/imagecon-2019... Background: JPEG XL is a combination of Cloudinary's FUIF [1] (successor of FLIF [2]) and Google's Pik [3]. Committee Draft (Aug 2019): https://arxiv.org/abs/1908.03565 Technical Details: https://www.spiedigitallibrary.org/conference-proceedings-of... Features / Goals: - high quality compression (> 60% over JPEG-1) - royalty-free with open source implementations available from the start - versatile: supports alpha transparency, high bit depth (16-bit), lossless compression, animations - progressive decoding / "responsive…

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Committee Draft of JPEG XL Image Coding System — mentioned by twotwotwo

Mon, 07 Oct 2019 23:36:54 GMT

A potential future option I only just learned about is JPEG XL (not XR!) which is proposed as a royalty-free successor to the JPEG we know. The draft is at https://arxiv.org/abs/1908.03565 and a little bit about what it has and why is at https://www.spiedigitallibrary.org/conference-proceedings-of... (but I haven't found nearly as much public detail on tools, reasoning behind choices, etc. as there is for e.g. AV1). The most interesting bit of it is that it contains a JPEG1 recompressor that saves about 20% space but allows exact reconstruction of the original file. It uses more modern…

Paper and discussion history. A mention is not an endorsement.