Live data from Hacker News

Google unkills JPEG XL?

tonisagrista.com

281–283 of 283 posts

Re: Google unkills JPEG XL?

#281
post #253

Earlier quoted context omitted.

I admit it, I was applying Cunningham’s Law. Disappointingly(?), you came to the same answer.

I admit I trusted your math; you seem to be off by a factor of 4: You have: 510.1e6km^2/1073741824/1073741824 You want: cm^2 * 4.4244122 / 0.22601872 Strangely enough, units lacks area_earth, so I used the number from https://iere.org/what-is-the-area-of-the-earth/

:D

I was starting with the length of the equator and assuming a spherical cow^Hplanet.

Re: Google unkills JPEG XL?

#282
post #281

Earlier quoted context omitted.

I admit I trusted your math; you seem to be off by a factor of 4: You have: 510.1e6km^2/1073741824/1073741824 You want: cm^2 * 4.4244122 / 0.22601872 Strangely enough, units lacks area_earth, so I used the number from https://iere.org/what-is-the-area-of-the-earth/

:D I was starting with the length of the equator and assuming a spherical cow^Hplanet.

Did you perhaps use the diameter of the earth rather than the radius?

#PiIsWrong

https://www.tauday.com/

  You have: (40075km/tau)^2*4*pi/1073741824/1073741824
  You want: cm^2
   * 4.434018
   / 0.22552908

Re: Google unkills JPEG XL?

#283

Earlier quoted context omitted.

I have been relentlessly shilling JPEG-XL's technological superiority especially against their joke of an alternative and a stain on the Internet they call WebP https://www.reddit.com/r/DataHoarder/comments/1b30f8h/image_... https://youtu.be/w7UDJUCMTng

Some of the same people developed both. Pretty sure Jyrki Alakuijala for example led the development of lossless mode for both WebP and JPEG-XL.

Thank you!

I designed WebP lossless alone. The rest of the WebP folks added a RIFF header and an artificial size limitation (16383x16383) to match with the size limitation of lossy WebP.

In JPEG XL I believe I had more influence on the lossy ("VarDCT") format than anyone else, but stayed relatively far from the lossless part (except the delta palette, two predictors, 2d lz-codes, and a few other smaller things). I believe Jon and Luca had most influence there.

Post reply on HN