ART (the software) news

it switches the inspector mode, but it doesn’t select the thumbnail in the browser, at least as far as I remember

I does

I just checked with the 5.7 appimage, and it’s not what I’m seeing (the thumbnail doesn’t have the keyboard focus, for instance…) – though it’s really a minor point

What is really the function of residual contrast in the Local contrast menu ?
SM

see residual image/contrast in Wavelet Levels - RawPedia

I use it to reduce global contrast without reducing at the same time local contrast and so give some room if you want to increase local contast.

In RT, local contrast is located in wavelet/final touchup.
I don’t know how it works as I don’t succed to get the same effect with Wavelet/contrast
@agriggio could you provide some simple explanation?

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@agriggio
I have sometime a problem with th UI. The mouse rolling is ineffective whatever I put the cursor. I have to quit and reload ARt to recover the normal behavior of the mouse.

sorry, this is a bit too vague… can you please open an issue at agriggio / ART / issues — Bitbucket and provide as much information as you can (including the steps to reproduce if you know them)? Thanks!

your explanation is good. In fact, it should work exactly the same as in RT.

I am not expert enough to fill a new issue.
What I can say, is that I use a linux version of ART 0.2 I compiled myself.
The scrolling of the mouse within the panels of ART is efficient in the browser, the image editor, the toolbox. After the use of various tools it happens that, the scrolling of the mouse was inefficient.
I am unable to zoom with the mouse in the image editor, and unable to scroll withing the tool menu. I have to use the side slider. I have to halt ART and to open a new session to recover a normal behavior.
Sorry for my bad explanations.

This is a bug ART has inherited from RawTherapee, I see this in both RT and ART. There previously was an issue that the mouse scrolled in the wrong direction:
https://github.com/Beep6581/RawTherapee/issues/5036
The fix:
https://github.com/Beep6581/RawTherapee/commit/d06e26356b625a19be32eef03def59e99afffffa
Probably now when GTK messes up the mouse we always fall into the “do nothing” branch.

@agriggio: The issue here is that at some point scrolling the mouse wheel stops doing anything. You can’t zoom in/out in the editor, you can’t scroll up/down in the file browser or the side panels. You need to drag the scrollbar or press the fit/1:1/+/- buttons. Unfortunately for me when GTK enters that unusable state I have a hard time grabbing the scrollbars, it seems it has an active width of just one pixel, if I don’t hit it it will minimize again.

@agriggio To be more specific, what is the difference between using wavelet contrast (or CBDL) and “local contrast”? I ask as I feel I cannot obtain the same effect with wavelet contrat or CBDL as with local contrast.

Thanks for the explanation. I have never experienced this myself, but now that I know what to look for, I’ll try to reproduce

they are using different formulas (and in case of CBDL, also a different wavelet decomposition). I think @jdc is the best person to ask for more details – I don’t know much more than this, sorry.

I haven’t encountered any scrolling problem.
The only strange behaviour I found is regarding pasting .arp profiles with the paste button: in RT if I click once on the paste button, the profile is pasted. In ART, the first press doesn’t seem to paste the profile (there’s just a “PP3 changed” entry appearing in the History panel, but the profile is not applied). Only on a second press of button does the profile get applied, and a second “PP3 changed” entry is added.

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@gaaned92
A question is difficult only if we do not know the answer !
This could summarize the use of wavelets :slight_smile:

If you want to know how they works, @XavAL made a very good document (in spanish) in Rawpedia (especially for branch wavelenh)…better than mine in French.

Wavelet is an unknown tool that I try for many years to popularize…
Having “removed” wavelet key tabs … to put it in that of complexity does not help things… but, in short, once we understand what wavelets are all simple.

To put it simply, “Local contrast based on unsharp mask” is a quasi-continuous function, whereas CBDL and wavelets are discrete functions

CBDL is a very simple wavelet, based on Haar decomposition
Wavelet in RT used Debeauchies decomposition, with very much more possibilities.

Wavelet allows almost all fantasies (besides I did not miss it), you can found them in 'dev", then better in “wavelenh” and I put some simple tools in “Local adjustements” (local contrast wavelet with clarity and sharp mask, CBDL with Clarity and blur, etc. )

It is obvious that the results and the usage are different (if we speak about “local contrast unsharp mask” and “wavelet”), the algorithms are totally different, but in the 2 case we can speak of “local contrast”

jacques

@agriggio @Carmelo_DrRaw
I realized a translation file for ART starting from RT french translation. It is mainly the Tool tips which are translated.
Works for me, hope that will be useful.
French.txt (141.0 KB)

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@agriggio
I was making trials with the local editing and I feel like I am dense.

suppose I take the raw from Pattern in lens flare
in a few minutes I can get that:

a-20190913-1841-57-1.jpg.out.arp.txt (10.2 KB)

Suppose now I want apply smoothing or some other local adjustement on the image, except on the flower.
Is it possible? how to do?

inverted area mask on the flower, refined with the parametric masks (h and l, possibly l alone is enough). if you want to exclude the stem as well, that’s also possible, but a bit more work. I don’t have a pc with me so I can’t try this out, but I’m pretty confident it’s doable…

  1. aera mask on flower I use to select flower:
    flowaer%20mask

  2. with parametric mask
    flowaer%20mask2
    Perhaps not perfect, but feathuring the area mask, I can mitigate the problem.

  1. I make a second correction, copying and inverting area mask

From this point, I dont see how I can recover the zones around the flower with parametric mask which only applies on the yellow zone?

Note : thanks for BW cast. All my old photos are processed :grinning:

Here’s how I did it (from the jpeg):
flower.jpeg.arp.txt (9.0 KB)

I added 2 area masks: the first one over the hole image, and a second one just on the flower, in exclusion mode. For the main mask control I created a dip in the hue corresponding to the flower, and for the area mask I played with feather and contrast curve.


flower2
flower3