Hi, here is my channel mixer. As usual, I release my whole archive. I will be happy if someone can compile it for me under Windows and Mac OS. Linux version is already provided.

I will later release a second version; only two lines of code will change. It will do exactly the same thing but with colors linear (before gamma correction). Right now, it looks like I can't do it because a bug in B5 makes my plugin unable to act at the right stage. Anyway most people want very certainly such a plugin to behave as this current version actually does.

win

Thanks for the plugin, and super thanks for the source !

Alban

Thanks for that (Win) plugin!!!

I noticed that the sliders didn't reset when double-clicked. So here's a patched .ui file that fixes the issue.
I would have renamed the QLabels more thoroughly because it's a bit confusing at first why the red ones are named cmred, cmgreen, cmblue while the others are cmredg etc.
But well, didn't want to interfere too much

Anyway, here it is, with the (linux) compiled version.

Cheers,

Alban

Thank you very much for that. Really sorry for the names of the slider. I write the *.ui files by hand and I first wrote a grayscale channel mixer with only three sliders. Then I thought that a color channel mixer could do the same and even more, thus I added the new sliders; their names where cmred2, cmred3. But it didn't work and I had to rename them to cmredg, etc. You are right; it's very awfull! Please, don't fear to "interfere". The source now belongs to the community of Bibble users. You can correct it, extend it, or whatever. I didn't look at your new version, but I strongly suggest to everybody to take it as the new "official" version. I will think about a more relevant website for releasing it. Of course, if you already have such a website and want to release it, please do. Though I didn't take the time to copy a license, I am a MIT-license guy, which means that you can do absolutely everything with my files (except send me to jail once my work has destroyed all your pictures ).

beautiful !
thanks

would be amazing a black/white channel mixer /monocrome
like photoshop


how can i work like a grayscale channel mixer?
i tried to desaturate and use you plugin
but i get duotone (like sepia) black and white

Just put your three values tree times. For instance choose three values there: http://www.prime-junta.net/pont/How_to/100_Curves_and_Films/_Curves_and_films.html?page=7. Let's take the first ones: 18,41,41. Use my nine sliders-channel mixer and put the following values:
0.18,0.41,0.41,0.18,0.41,0.41,0.18,0.41,0.41
which will do exactly the same as a three-sliders grayscale channel mixer.

Best regards, TB.

yes
but is there a mod ui to have only 3 sliders,it will be more easy

thanks

OK, I will hack a 3 sliders version. Will you be able to compile it? I can provide a Linux compiled version. What OS do you use?

I think I will spend some more time on the "official version" rather than hacking a tiny 3-sliders.
Please tell me what you think it should look like?

I could add a second option with "Use red settings for a grayscale conversion"; maybe even: a checkbox for "convert to grayscale" and a combo for choosing between the red/green/blue settings?
If you think to more options, I will add them but then probably I will use a tab-based UI: one tab for the nine sliders, a second tab for all settings?

Please, tell your ideas on the topic. Do you want some other special features?

The second thing I will do is take more care concerning layers issues (no idea of what happens now... but I will check if everything is OK and fix what may not work now).

Would it make sense to just link the sliders ? Add a b&W tickbox and if it's set, the appropriate sets of sliders act in parallel ? You could initially mix the colours into B&W, and then unlock and fine-tune to get a bit of toning ?

thorsten

This is a good idea but what about the following issue:
I set the nine values like (for instance):
1,2,3,4,5,6,7,8,9
Now I enable this kind of linking: the slider with value 1 is now linked with sliders with values and 4 and 7. Does that mean that when enabling the linking part, the sliders first get aligned on the three first one? If I enable the grayscale mode: do the sliders have to first go to the values:
1,2,3,1,2,3,1,2,3 ?
Of course unlocking that is much easier, because nothing special has to happen. But again, what should be the behaviour of the sliders when enabling this mode?

I can't see any 'right' way of doing it, so just copying from red to green and blue is as good as any other method - and it would follow the principle of 'least surprise' I think.

thorsten

OK, I will go to bed but here is already a first idea for an UI.
You can replace the old one by this new one if you want but of course new buttons will have no effect. The interface still should work with no problem with old settings.

Four new buttons: reset, gray/red, gray/green, gray/blue. They will replace all current settings with settings taken from red, green or blue. For instance, say you have the following values: red(1,2,3), green(4,5,6), blue (7,8,9). Now if you click on Gray/Green, you will have: 4,5,6,4,5,6,4,5,6

I write my UI by hand, which is quite difficult. If someone can have a look at it for adjusting the alignment for buttons (it is now very ugly in my humble opinion ) I will be very happy. I will fix the code for using the new buttons tomorrow (or sunday). Best regards, TB.