3 ms·

First per-image PCA decomposition of Kodak suite reveals deliberate curation

9 points by PearsonZero 6mo ago

aaronbrethorst 6mo ago
I'd love some sort of "so what?" explainer in the README.
- choult 6mo ago
  Or an abstract actually stating a conclusion versus the editorialized title in the HN post.
  - fn-mote 5mo ago
    Definitely. This breaks HN guidelines for the title. I don’t know where you read to find the conclusion that the editorialized title claims. What is “curation” anyway? No kidding, Kodak curated the collection. The HN title is either unsubstantiated or useless.
- nerdsniper 5mo ago
  I imagine that would be found in the associated paper, but I’m not sure if it’s been published yet. I’m having trouble finding it. Parent Paper: Baetzel, J. (2026). Statistical Characterization of Inter-Channel Redundancy Structure in the Kodak Lossless True Color Image Suite. Per-Image Principal Component Decomposition of PCD0992.
  - PearsonZero 5mo ago
    [dead]
angry_octet 5mo ago
These are the images: https://github.com/MohamedBakrAli/Kodak-Lossless-True-Color-Image-Suite/tree/master/PhotoCD_PCD0992 https://github.com/MohamedBakrAli/Kodak-Lossless-True-Color-...
hypercube33 5mo ago
Can someone explain what this is like I'm the idiot I am?
- fragmede 5mo ago
  The Kodak Lossless True Color Image Suite is an ancient set of reference images from days of film used to make jpeg, and everything else, reproduce colors (and other thing) accurately. The linked GitHub repo is a PCA (Principal Component Analysis) decomposition of those images, which is a bunch of math (linear algebra) you'd use to make compressed representations of those pictures aka how you'd save them as a jpeg. (PCA does a lot of other stuff, but that's what it's doing here.)
thunderbong 5mo ago
Actual title - Per-image principal component decomposition of the Kodak Lossless True Color Image Suite From HN Guidelines [0] Use the original title, unless it is misleading or linkbait; don't editorialize. [0]: https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html

9 points by PearsonZero 6mo ago

aaronbrethorst 6mo ago

I'd love some sort of "so what?" explainer in the README.

choult 6mo ago
Or an abstract actually stating a conclusion versus the editorialized title in the HN post.
- fn-mote 5mo ago
  Definitely. This breaks HN guidelines for the title. I don’t know where you read to find the conclusion that the editorialized title claims. What is “curation” anyway? No kidding, Kodak curated the collection. The HN title is either unsubstantiated or useless.
nerdsniper 5mo ago
I imagine that would be found in the associated paper, but I’m not sure if it’s been published yet. I’m having trouble finding it. Parent Paper: Baetzel, J. (2026). Statistical Characterization of Inter-Channel Redundancy Structure in the Kodak Lossless True Color Image Suite. Per-Image Principal Component Decomposition of PCD0992.
- PearsonZero 5mo ago
  [dead]

angry_octet 5mo ago

These are the images: https://github.com/MohamedBakrAli/Kodak-Lossless-True-Color-Image-Suite/tree/master/PhotoCD_PCD0992 https://github.com/MohamedBakrAli/Kodak-Lossless-True-Color-...

hypercube33 5mo ago

Can someone explain what this is like I'm the idiot I am?

fragmede 5mo ago
The Kodak Lossless True Color Image Suite is an ancient set of reference images from days of film used to make jpeg, and everything else, reproduce colors (and other thing) accurately. The linked GitHub repo is a PCA (Principal Component Analysis) decomposition of those images, which is a bunch of math (linear algebra) you'd use to make compressed representations of those pictures aka how you'd save them as a jpeg. (PCA does a lot of other stuff, but that's what it's doing here.)

thunderbong 5mo ago

Actual title - Per-image principal component decomposition of the Kodak Lossless True Color Image Suite From HN Guidelines [0] Use the original title, unless it is misleading or linkbait; don't editorialize. [0]: https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html