Is possible combine three black white images way one is L and others are A,B. and similar to CMYK.

[MxHeppa]

Is possible combine three black white images way one is L and others are A,B. and similar with CMYK. RGB i know idea what i can use i use images as colour images (what have data only chanel R or G or B) but 
and layer them suitable mixing mode (i dont remember exact mode name) same idea does not work with these others. and if i use in gradient map with cmyk values for points i wonder if inbeetween values stay cmyk values. if stay i maybe found solution how can do this with cmyk and i this is related creative art maybe others know other reasons use it. nicely i allready found way paint only L chanel for example.(allows correct looking highlights).

[MxHeppa]

oddly i found in rgb mode gradient map if i use rgb project with cmyk cyan converts it to rgb cyan i mean pure one what is 8bit values is 0,255,255. not nice
and others as well i can do thing of course when i convert project to cmyk and load images to it they stay rgb and i can then map them such gradient maps what i mean put them top of each other. basically solved but if have single image and convert it cmyk profile before gradient map gets some its colours lost.

[lepr]

5 hours ago, MxHeppa said:

Is possible combine three black white images way one is L and others are A,B.

Yes. One way is to use the Channels panel to transfer the lightness of each monochrome image to the respective L, A and B channels of a new Pixel object.

1. Place the three monochrome images into a LAB document and use Rasterise command to convert them to Pixel objects.
2. Name the Pixel objects "L", "A" and "B" (without the double quotes).
3. Run the attached macro which will generate a composite Pixel object named "LAB".

L, A & B to LAB.afmacro

Edited January 31, 2023 by ,,,
typo

[lepr]

5 hours ago, MxHeppa said:

and similar with CMYK

C, M, Y & K to CMYK.afmacro

[MxHeppa]

document seems be needed be format what this end result needed be. but huge and giant thanks these macros. and i also try also understand how they work.
and saddly making such with HSL values is impossible now i bet. i maybe get oeher tool someday such HSL use i know program what allows such. also have other nice things what are hard or impossible with these Affinity apps. and i mean when we talk creative usage. but basic image processing needs is terrible to my taste and if need photoshop style painting tools also then.(and photoshop style is less what real natural media painting programs are but still nice often). terrible means slow at least and i feel maybe also overly complex interface. is also cheap app.

ps. now i try found cmyk colour profile what is widest possible. and try remember do folder for this kind macros for this app ones what i cannot import to see panel where are these huge collections what other people done.

[NotMyFault]

33 minutes ago, MxHeppa said:

nd saddly making such with HSL values is impossible now i bet

A long time ago I made procedural texture filters to convert from RGB to HSL and vice versa.

 

So in case you have 3 greyscale layers for HSL, you can convert them to RGB and combine.

The filters are live / non-destructive - bit quite demanding for your PC.

 

 

[lacerto]

Obsolete.

[lacerto]

Obsolete.

[lacerto]

Obsolete.

[MxHeppa]

tell how this recompostion is done please ? amazing remember this gmic technology. even this one direction allows lot  but now i wait recompostion solution. and indeed corel paintshop pro have such seperations at least some colour spaces and i tested it with trial but found general usage (i mean basic needs resizing,photshop type painting/drawing,cropping etc) is very slow (and i disliked general interface) becouse of this goed with Affinity Photo. i look also you python script mabe someday maybe can think if i have someday super energy (not likely happen) to learn it as well.
Ps. btw i use windows.

[lacerto]

Obsolete.

[NotMyFault]

2 hours ago, lacerto said:

As you mentioned, the HSL live filter does not work at all in APhoto v2 because of some change in reserved words. It would be great to have the code updated and also changed so that it could be directly used as a HSL separator similarly as the Python script (I have just have done something wrongly to not having been able to use it that way).

An update will be available later today when i have access to my Mac.
The names mi and ma  caused the issue. I replaced them by m1 and m2 and it is working again. 

[lacerto]

Obsolete.

[MxHeppa]

1 hour ago, NotMyFault said:

An update will be available later today when i have access to my Mac.
The names mi and ma  caused the issue. I replaced them by m1 and m2 and it is working again. 

nice and i found it i mean what you and others talk. and now i wait.

[lacerto]

Obsolete.

[MxHeppa]

now i hope Not my fault fixes things what is made for needed steps.

[NotMyFault]

done.

 

[NotMyFault]

5 hours ago, lacerto said:

I have not been using the procedural texture filter much so I probably failed to find a way to save a user-defined filter calculation for later use. I could create a preset category and import presets, but how to export or save? Being able to do that would make user-defined filters much more effective.

You can find import/export under the burger menu, in the category level entries.

[NotMyFault]

1 hour ago, lacerto said:

Spare channels are used to create grayscale layers that are used for editing and then, after editing, another set of spare channels are created to recompose the HSL image with live filter to convert to RGB.

You can do it that way, converted (destructively) to pixel layers, and it certainly has its advantages.

Never the less, for fans of fully non-destructive workflow you can do all edits non-destructively in RGB/8 or RGB/16.

Just jeep in mind that R is Hue, G is saturation, B is lightness while editing.

If you want to use pixel based tools, simply add a pixel layer, and edit only one of the RGB channels (use channels panel). set blend mode to "add". You can nest a channels mixer adjustment to zero-out the unwanted channels: when working on hue (store in R), add nested channel mixer with R=0, B0.

Use "solo/isolated" mode to get greyscale rendering of layers in case the false colours are irritating for you. 

 

[lacerto]

Obsolete.

[MxHeppa]

now i wonder how earth is possible but rgb->hsl conversion what i think part of procedural texture becouse formula what i found such have parts what i cannot put formulas.

 

 

[lacerto]

Obsolete.

[MxHeppa]

okay now i understand you just used them. i look then them. and i think i can do only hsl to rgb conversion if i allready have suitable images suitable names even they are not origianlly same image at all.(but same size). such uses is ones what i also thinked. totally creative ways use image colours for abstract art.

 

[lacerto]

Obsolete.