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A nice YT video about blend modes

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A nice YT video about blend modes
Ofnuts Offline
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#1
12-15-2024, 10:18 PM
Not meant for Gimp, but blend modes are common across image editors. Some math insides, but nothing too hard, and nice examples.








 Enjoy.
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nchen Offline
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#2
12-16-2024, 08:58 PM
(12-15-2024, 10:18 PM)Ofnuts Wrote: Not meant for Gimp, but blend modes are common across image editors. Some math insides, but nothing too hard, and nice examples.








 Enjoy.

Cool video! The math behind image processing is so interesting. It's such an open ended concept with a lot of room to explore.
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denzjos Offline
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#3
12-17-2024, 04:29 PM
This clearly explains all the color manipulations: like most things, it's all about math. Ofnuts, thanks for posting this video
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Tas_mania Offline
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#4
12-19-2024, 07:09 AM
That's a thorough video on blend modes. I can't comment anything intelligent because of this:

   

So I'm having a holiday mentally and physically ATM.
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Ofnuts Offline
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#5
12-19-2024, 12:48 PM
(12-19-2024, 07:09 AM)Tas_mania Wrote: That's a thorough video on blend modes. I can't comment anything intelligent because of this:



So I'm having a holiday mentally and physically ATM.

You're pregnant? Big Grin
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Tas_mania Offline
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#6
12-19-2024, 08:48 PM
Quote: You're pregnant? [Image: biggrin.png]

Yeah China make really good test kits that are reasonably priced.   Sick
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Tas_mania Offline
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#7
12-20-2024, 08:11 PM (This post was last modified: 12-20-2024, 08:12 PM by Tas_mania.)
If the blend modes were listed with their equations in a python file it would make a great addition to 'gimphelpers'. It could be called 'blend-mode-chooser'. Maybe that is where this is going?

Sorry I went off topic here. I got too complacent, idiots go xmas shopping while they are covid positive. I'll write about it on my blog Smile
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Ofnuts Offline
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#8
12-21-2024, 08:30 AM
(12-20-2024, 08:11 PM)Tas_mania Wrote: If the blend modes were listed with their equations in a python file it would make a great addition to 'gimphelpers'. It could be called 'blend-mode-chooser'. Maybe that is where this is going?

They already are in Gimp.LayerModes.

They are in a large Choice variable in my Gimp3 script ofn3-interleave-layers. You are welcome to steal that. I'll think about adding it to gimphelpers (or a side module).
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Tas_mania Offline
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#9
01-19-2025, 01:51 AM
I watched this again and experimented with the Difference/Exclusion blend modes in Gimp. This is easy to do, just have a base color layer and another image above it and select the Mode. Here are my results Smile

   


   


   



There is almost no change between Exclusion and Difference. The base layer has a major effect on the finished image. White gives more of a photo negative effect. This can be applied to animation streams with 'Interleave layers'  by you know who Smile
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