The clear winner here is JPEG XL, which is fully supported in iOS 17 and will have a billion+ capable clients by end of year.<p>JPEG XL has HDR, is the best codec for photographic type content in all but extremely low file size, is the best codec for cartoon/chart style graphics, has a container that is enormously flexible (want to store a channel for depth or for object detection? You can do it).
In the article they mention <i>JPEG XL</i> (aka .jxl) format that I hope <i>everyone</i> knows about:<p><a href="https://jpegxl.info/" rel="nofollow noreferrer">https://jpegxl.info/</a><p>It is supported by Adobe, included in Safari 17, is behind a flag in Firefox, and was behind a flag in Chrome too until they idiotically chose to remove it despite severe pushback from the community. My take is that it <i>will</i> be one of the most-popular image formats in the coming decade.
That is crazy indeed.<p>I can't remember, do the other encoders automatically change the chroma subsampling? XYB JPEG peaks pretty hard at specific bpp ranges depending on the subsampling.<p>Also, things like this make me wonder what other tasks would be better in XYB colorspace. BM3D, for instance, performs best in "opponent" color space: <a href="https://github.com/HomeOfVapourSynthEvolution/VapourSynth-BM3D">https://github.com/HomeOfVapourSynthEvolution/VapourSynth-BM...</a>
wonder if there is a perceptual color system that accounts for the rare fourth color receptor...<p><a href="https://en.wikipedia.org/wiki/Tetrachromacy#Tetrachromacy_in_carriers_of_CVD" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Tetrachromacy#Tetrachromacy_in...</a><p>don't know if that would be reproducible on a regular RGB display, though