From Event: SPIE Optical Engineering + Applications, 2019
An update on the JPEG XL standardization effort: JPEG XL is a practical approach focused on scalable web distribution and efficient compression of high-quality images. It will provide various benefits compared to existing image formats: significantly smaller size at equivalent subjective quality; fast, parallelizable decoding and encoding configurations; features such as progressive, lossless, animation, and reversible transcoding of existing JPEG; support for high-quality applications including wide gamut, higher resolution/bit depth/dynamic range, and visually lossless coding. Additionally, a royalty-free baseline is an important goal. The JPEG XL architecture is traditional block-transform coding with upgrades to each component. We describe these components and analyze decoded image quality.
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Jyrki Alakuijala, Ruud van Asseldonk, Sami Boukortt, Martin Bruse, Iulia-Maria Comșa, Moritz Firsching, Thomas Fischbacher, Evgenii Kliuchnikov, Sebastian Gomez, Robert Obryk, Krzysztof Potempa, Alexander Rhatushnyak, Jon Sneyers, Zoltan Szabadka, Lode Vandevenne, Luca Versari, and Jan Wassenberg, "JPEG XL next-generation image compression architecture and coding tools," Proc. SPIE 11137, Applications of Digital Image Processing XLII, 111370K (Presented at SPIE Optical Engineering + Applications: August 13, 2019; Published: 6 September 2019); https://doi.org/10.1117/12.2529237.