Jump to: Board index » General » Fusion

Driving values based on pixel numeric values

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

chlowden

  • Posts: 147
  • Joined: Tue May 15, 2018 2:57 pm
  • Real Name: christopher lowden

Driving values based on pixel numeric values

PostWed Jan 12, 2022 10:37 pm

Hello
I looking for a way to drive Merge or colour node values from pixel values in another source footage.
For instance, imagine a green screen shot of a person comped over a background shot of a fire. I would like the foregound saturation, luminance, etc to change values based on the pixel values of the background shot, essentially adding fame driven flicker to the foreground shot.
Any thoughts are most welcome.
Thank you
Offline

birdseye

  • Posts: 347
  • Joined: Fri Jun 12, 2020 2:36 pm
  • Real Name: Iain Fisher

Re: Driving values based on pixel numeric values

PostWed Jan 12, 2022 11:22 pm

The VectorDistortion node could be what you are looking for.
Offline

Sander de Regt

  • Posts: 3497
  • Joined: Thu Nov 13, 2014 10:09 pm

Re: Driving values based on pixel numeric values

PostThu Jan 13, 2022 6:52 am

You want to use a probe modifier for that. It can sample values that you can use to drive all the stuff you mentioned.
Sander de Regt

ShadowMaker SdR
The Netherlands
Offline

chlowden

  • Posts: 147
  • Joined: Tue May 15, 2018 2:57 pm
  • Real Name: christopher lowden

Re: Driving values based on pixel numeric values

PostThu Jan 13, 2022 6:54 am

birdseye wrote:The VectorDistortion node could be what you are looking for.

Thank you for introducing me to this node. It certainly does some interesting stuff. I will have a play with it.
Offline

chlowden

  • Posts: 147
  • Joined: Tue May 15, 2018 2:57 pm
  • Real Name: christopher lowden

Re: Driving values based on pixel numeric values

PostThu Jan 13, 2022 6:59 am

Sander de Regt wrote:You want to use a probe modifier for that. It can sample values that you can use to drive all the stuff you mentioned.

Good morning Sander
Thank you for introducing me to the the probe modifier method. It looks like what I need.
Below is a link that explains it for those that don't know.
"https://www.youtube.com/watch?v=M1aanBWEOtc&t=93s"
Many thanks
Last edited by chlowden on Thu Jan 13, 2022 12:34 pm, edited 5 times in total.
Offline

birdseye

  • Posts: 347
  • Joined: Fri Jun 12, 2020 2:36 pm
  • Real Name: Iain Fisher

Re: Driving values based on pixel numeric values

PostThu Jan 13, 2022 11:00 am

The link didn't work, so I guess this might be what you linked to. Something else I need to watch also.


Return to Fusion

Who is online

Users browsing this forum: No registered users and 35 guests