Generalized Hyperbolic Stretch

Hello

I waited for the Pull-Request for Abstract Profile, Colour Appearance (CAM16 & JzCzHz) to be merged into Dev, to update the Pull-Request for GHS.

Executables GHS
Since yesterday morning, it’s done. So the Appimage and Windows executables available, you have GHS and all the new features present in Dev:

  • Abstract Profile (Color Tab) with TRC (Gamma, Slope, Midtones), Highlight attenuation, and Contrast Enhancement, using wavelets without it being seen.
  • (CAM16 & JzCzHz) with :
  • ** in Source Data Adjustmens : Log encoding, and Tone Mapping Operators with several choices: a) Freeman’s Tone-mapping algorithm and b) Sigmoid with code close to that of Darktable.
  • ** In CAM16 Image Adjustments using the Freman and Sigmoid algorithm using the Q (brightness) variable instead of RGB. The results are obviously different
  • ** You can also use the experimental version of JzCzHz
  • For information, older versions of Sigmoid are still accessible by choosing CAM16 & JzCzHz - 5.11 or 5.12 in the start menu.

In the absence of Rawpedia, I wrote a text that is “ready” to be incorporated into Rawpedia for GHS, hence the markers that appear (and hinder reading a little). I translated the original into French with DeepL. An English speaker will of course be able to correct it.

ghs-rawpedia-en.pdf (701.4 KB)

Jacques

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I just update Rawpedia

GHS - Generalzed Hyperbolic Stretch

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@jdc I am running the latest dev (-148) but I can’t seem to find GHS. Where is it located?

@chaimav for windows you will find it here:

other versions are here:

Why is it not here Release Automated Builds · RawTherapee/RawTherapee · GitHub ?
That’s where I normally get my dev versions from.

@chaimav

This is a pull-request in development waiting to be merged with dev.
The documentation - probably not complete - was made more than 1 month ago, and I updated it very recently on Rawpedia

The executables are marked as available in this same thread 4 days ago.

I attach the link again
Executable GHS
Of course, in the list choose the version that suits you, either Windows or Appimage, those marked ‘ghs’.

:grinning:

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Ah, I misunderstood. I thought it was merged already