Tech Stocking Stuffers: 18 awesome gifts under $50

Google's new open-source image compression algorithm reduces JPEG file sizes by 35 percent

By Shawn Knight ยท 12 replies
Mar 17, 2017
Post New Reply
  1. Google has developed a new open-source image compression algorithm that it says can reduce the size of JPEG images by 35 percent.

    The algorithm, dubbed Guetzil (that’s Swiss German for cookie), is said to create smaller file sizes without sacrificing much in the way of quality.

    Robert Obryk and Jyrki Alakuijala, software engineers at Google Research Europe, highlight in a recent blog post that the algorithm tries to overcome the difference between the psychovisual modeling of JPEG's format and Guetzli’s psychovisual model which approximates color perception and visual masking in a more thorough and detailed way than what is achievable by simpler color transforms and the discrete cosine transform.

    That technical jargon won’t mean much to the average reader which is why they’ve provided a couple of visual examples to show just how effective the algorithm is.

    The benefit of using Guetzil, aside from the reduction in image size and barely-noticeable changes in image quality, is that the files it turns out remain compatible with existing browsers, image processing programs and the JPEG standard itself.

    The one major shortcoming with Guetzil, however, is that the algorithm takes significantly longer to create compressed images compared to currently available methods. That may seem like a deal-breaker but because of how well it performs in the quality department, Google feels the slower compression time is a worthy trade-off.

    Guetzil is available for anyone to download and try right now from GitHub.

    Lead image courtesy Marcio Jose Sanchez, AP

    Permalink to story.

  2. MoeJoe

    MoeJoe TS Guru Posts: 701   +377

  3. Legionnaire

    Legionnaire TS Enthusiast Posts: 24   +40

    Thought WebP might be worth a mention here... :)
  4. jobeard

    jobeard TS Ambassador Posts: 10,856   +901

    Always stick with W3C standards for greatest compatibility. *IF* and *WHEN* Google convinces the W3C to adopt this, then-and-only-then is it worth consideration :grin:
  5. Yynxs

    Yynxs TS Addict Posts: 202   +70

    The best part of the new standard is your picture gets sent to Google automatically every time it's viewed.
  6. Kotters

    Kotters TS Maniac Posts: 258   +168

    Apparently it's just a different algorithm for generating jpegs, as the article has been written. But don't let that stop you.

    >the files it turns out remain compatible with existing browsers, image processing programs and the JPEG standard itself.
    Reehahs likes this.
  7. Igrecman

    Igrecman TS Maniac Posts: 206   +117

    The JPEG 2000 format ( .jp2 .jpx ) has been around for 17 years. It has a much superior compression ratio and quality than jpg, but it never got mainstream usage on the Web unfortunately. So why would we need Google's jpg format? There already is a better jpeg format. Same with .gif, there are better options but we keep sticking to what's been around for ever.
    Last edited: Mar 18, 2017
  8. Kotters

    Kotters TS Maniac Posts: 258   +168

    It's not a new format. It's a new library for encoding jpegs.
  9. Jack007

    Jack007 TS Booster Posts: 181   +42

    No use creating a jpeg image engine that is unefficient and slow. if it cant do batch processing faster than current jpeg engine it has to do back to the drawing board for more modifications so it can get faster
  10. Kotters

    Kotters TS Maniac Posts: 258   +168

    yeah, **** h.265. MPEG 2 for life.
  11. OutlawCecil

    OutlawCecil TS Maniac Posts: 233   +109

    It's amazing you still connect the internet... You daredevil you. Always taking risks. *rolls eyes*
  12. Yynxs

    Yynxs TS Addict Posts: 202   +70

    New drugs. Soon as they get the dosage right I can go outside if I can get my helmet back.
  13. Yynxs

    Yynxs TS Addict Posts: 202   +70

    On a more serious note: (2012)

    are about 'emotional' loss in sound compression. More importantly, this may have affected what music is created and sold in the industry.

    I see from the article that "...less ringing artefacts than libjpeg..." are a 'feature' of this compression. I'm wondering if there is any exploration of perceptual factors and emotional involvement similar to 'timbre loss' in the visual industry?

    edited to clarify the question parameter
    Last edited: Mar 20, 2017

Similar Topics

Add your comment to this article

You need to be a member to leave a comment. Join thousands of tech enthusiasts and participate.
TechSpot Account You may also...