Jump to: Board index » General » Fusion

Separate luma and color channels

Learn about 3D compositing, animation, broadcast design and VFX workflows.
  • Author
  • Message
Offline

Cesar Tejada

  • Posts: 64
  • Joined: Wed Mar 04, 2020 1:13 pm
  • Real Name: Cesar Augusto Tejada

Separate luma and color channels

PostFri Sep 30, 2022 1:47 am

Hi! I want to know what nodes can I use to separate my image in two channels, in this case luminosity and color.

I want to have the flexibility to work in each channel separately. For example if I want to add blur to only the luma channel.

Any idea? :)

Sent from my Mi A3 using Tapatalk
Windows 10 Home Version 21H1

- MSI GF62VR 7RF
- Intel(R) Core(TM) i7-7700HQ CPU
- Intel HD Graphics 630
- NVIDIA GeForce GTX 1060
- 32 GB of RAM
Offline

Hendrik Proosa

  • Posts: 2498
  • Joined: Wed Aug 22, 2012 6:53 am
  • Location: Estonia

Re: Separate luma and color channels

PostFri Sep 30, 2022 11:35 am

Colorspace is the node. Convert to one of numerous luma-chroma models or some HSV/HSL variant where luminance or something similar is in lightness/luminance/value component.

They all produce three channels, not two. One luminance based and two color components.
I do stuff.
Offline
User avatar

Chad Capeland

  • Posts: 2887
  • Joined: Mon Nov 10, 2014 9:40 pm

Re: Separate luma and color channels

PostFri Sep 30, 2022 2:13 pm

Bitmap can output just Luminance if you just want one channel and want highest performance. There's also a Fuse out there called ColorToMono that gives some more dimensionality reduction options.
Chad Capeland
Indicated, LLC
www.floweffects.com

Return to Fusion

Who is online

Users browsing this forum: No registered users and 12 guests