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arXiv:1703.04416cs.CV

Users prefer Guetzli JPEG over same-sized libjpeg

Jyrki Alakuijala, Robert Obryk, Zoltan Szabadka, Jan Wassenberg

Abstract

We report on pairwise comparisons by human raters of JPEG images from libjpeg and our new Guetzli encoder. Although both files are size-matched, 75% of ratings are in favor of Guetzli. This implies the Butteraugli psychovisual image similarity metric which guides Guetzli is reasonably close to human perception at high quality levels. We provide access to the raw ratings and source images for further analysis and study.

arXiv comments
Journal reference
DOI
Subjects
cs.CVComputer Vision and Pattern Recognition cs.HCHuman-Computer Interaction

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Linked by 4 identifiable commenters in 4 comments across 3 threads, from Mar 2017 to May 2018.

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Discussed in comments3 threads

  1. Subscription Hell 1 comment

    • There are glaring optimization issues. Over 6MB of those 10MB is just one bloated photo [1]. It can be compressed down to 1-2MB. Moreover, if it was a proper responsive image, it would not be larger than 100-200 KB for most readers because a good JPEG compressor can pull 2 bits…

      vladdanilovView on HNParent context

  2. Compressing Images Using Google’s Guetzli 1 comment

    • I find this article a bit poor. It basically gives a few data points about the resulting image size for a few quality settings from an unknown source image already compressed in jpeg with unknown quality setting. No example of perceptual quality degradation or screenshots (which…

      makapufView on HNParent context

  3. Guetzli: A New Open-Source JPEG Encoder 2 comments

    • Cool, but neither the article nor the paper (https://arxiv.org/pdf/1703.04416.pdf) mention just how much slower it is.

      dmitrygrView on HNParent context

    • We did an experiment with comparisons of Guetzli and (slightly larger) libjpeg output: https://arxiv.org/abs/1703.04416 Turns out that 75% of the 614 ratings are in favor of the Guetzli version.

      janwasView on HNParent context

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