The situation: “OMG we need an alpha channel!” “ALPHA MAN is here at last!” Very useful explanation of the channelmix top, I was always trying all possible matrix outcomes to get a result:))
Is there a way to actually draw masks? Something like the polygonal or bezier lasso tools in Photoshop would take a lot of the guesswork out of this. And especially because this approach is simply non-usable if the image contains black.
Yes! However, you will have to make a slight change to the approach. Add a Level TOP prior to the Channel Mix TOP and set the Invert parameter value to 1. This will invert the white areas to black, allowing you to use the Channel Mix and Threshold TOPs to process the image. Hope that helps!
Yes there’s many different ways to approach this (for example you could use a Matte TOP to look at the alpha channel of a matte texture and achieve a similar result). For a lot of beginners that don’t know the difference, they often search for keywords like alpha matte so we’re talking to a lot of those folks
@@TheInteractiveImmersiveHQ No worries, i might've just have had my volume up way too high because of listening to a quiet video, now that i hear it again it's not that bad. Still a bit loud though
Timely as always, I was just dealing with matting this weekend!
Great to hear this was useful :) Matting is always one of those things that happens far more often than we like, so it's good to have these tricks
The situation: “OMG we need an alpha channel!” “ALPHA MAN is here at last!”
Very useful explanation of the channelmix top, I was always trying all possible matrix outcomes to get a result:))
Hahaha it's so true! That happens all the time. Channel Mix is so powerful but it's not the most intuitive operator the first time you use it.
Is there a way to actually draw masks? Something like the polygonal or bezier lasso tools in Photoshop would take a lot of the guesswork out of this. And especially because this approach is simply non-usable if the image contains black.
Is there a way to do this for an image with a white background?
Yes! However, you will have to make a slight change to the approach. Add a Level TOP prior to the Channel Mix TOP and set the Invert parameter value to 1. This will invert the white areas to black, allowing you to use the Channel Mix and Threshold TOPs to process the image. Hope that helps!
thanks for the tutorial! just wanna note that your intro music is too loud in comparison to your voice :)
This is called a luma matte, since you're basing it off the luminance of the original image
Yes there’s many different ways to approach this (for example you could use a Matte TOP to look at the alpha channel of a matte texture and achieve a similar result). For a lot of beginners that don’t know the difference, they often search for keywords like alpha matte so we’re talking to a lot of those folks
That intro was more like a sonar ping than anything, almost blew my ears out. All good though
We've worked on making the intro a bit more relaxed in the newer videos :)
@@TheInteractiveImmersiveHQ No worries, i might've just have had my volume up way too high because of listening to a quiet video, now that i hear it again it's not that bad. Still a bit loud though