Comment by throwaway81523
3 years ago
Does JPEG XL have patent issues? I half remember something about that. Regular JPG seems fine to me. Better compression isn't going to help anyone since they will find other ways to waste any bandwidth available.
The main innovation claimed by Microsoft's rANS patent is about the adaptive probability distribution, that is, you should be able to efficiently correct the distribution so that you can use less bits. While that alone is an absurd claim (that's a benefit shared with arithmetic coding and its variants!) and there is a very clear prior art, JPEG XL doesn't dynamically vary the distribution so is thought to be not related to the patent anyway.
No it doesn't.
And yes, regular JPEG is still a fine format. That's part of the point of the article. But for many use cases, better compression is always welcome. Also having features like alpha transparency, lossless, HDR etc can be quite desirable, and those things are not really possible in JPEG.