FLIF – Free Lossless Image Format • Hacker News Board

Re: FLIF – Free Lossless Image Format

#251

Post by supportlocal4h » Sun, Feb 09, 2020, 4:44 AM UTC

ksec wrote: post #227

supportlocal4h wrote: post #190

Earlier quoted context omitted.

Progressive photos always irritate me. The photo comes on my screen all blurry and out of focus and I'm disappointed that the moment I thought I had captured didn't turn out. Then, 3 seconds later, the picture changes and gets slightly better. Then I'm hopeful, but disappointed again. Then i think, "maybe it's not loaded yet", so i wait and hope. Then 2 seconds later it changes again. Is it done? Is it loaded now? Wi…

The progressive mode in Jpeg and JPEG XL is quite different, because the quality is so much better your perception of it changes. Where Progressive Jpeg are literally useless before it finish loading, JPEG XL provides decent quality.

I'm curious to see it. My irritation is really just when I actually care about the picture. When I'm specifically browsing my library, for instance.

When it's the background for some webpage, or some other photo I'm not focused on, the progressive quality is probably a good thing.

Re: FLIF – Free Lossless Image Format

#252

Post by twotwotwo » Thu, Feb 13, 2020, 10:37 PM UTC

tangm wrote: post #49

twotwotwo wrote: post #38

Earlier quoted context omitted.

JXL is an interesting standard. Integrates a recompressor that shaves ~20% off .jpgs without further loss(!), FUIF for essentially-lossless images in a progressive/interlaced mode like this, a separate lossless format, and a new lossy format with variable-sized DCTs and a bunch of other new tools (other transforms for DCT-unfriendly content, postfilter for DCT artifacts, new colorspace, chroma-from-luma...). It's int…

I think the progressive loading feature of FLIF/FUIF/JXL would be really interesting for WebGL. WebGL games already have asynchronous resource loading and incremental image decoding/texture upload just by virtue of using the available APIs. One could get a pseudo texture streaming effect by default (although no unloading of textures...)

The fancy new lossy mode has some incremental loading too; could be interesting for both.

Re: FLIF – Free Lossless Image Format

#253

Post by [deleted] » Tue, Feb 18, 2020, 7:32 PM UTC

pnako wrote: post #30

tangm wrote: post #15

It looks like the the creator (Jon Sneyers) has since (2019) made another image format more focused on the lossy compression, FUIF[0], which itself has been subsumed by the JPEG XL format[1]. I hope the "JPEG" branding doesn't make folks think that JPEG XL isn't also a lossless format! [0] https://github.com/cloudinary/fuif [1] https://jpeg.org/jpegxl/index.html

JPEG XL is either lossy compression for large pictures, or something named by people who suck at branding.

[deleted]

Re: FLIF – Free Lossless Image Format

#254

Post by sovok_x » Tue, Feb 18, 2020, 7:53 PM UTC

Checklist for how far it should go to be accepted format, applicable to JPEG XL too:

- SIMD-optimised encoder/decoder for major programming languages;

- stable photoshop and gimp import/export plugins, supporting layers, animation and transparency features;

- metadata reading/writing library for major programming languages;

- firefox and chrome integration at least.