Recommended Posts

Peter Doyle mentions suppression LUTs in one of his interviews. Do you know what that is?

Share this post


Link to post
Share on other sites

I’m guessing he means “constrain” - A film/print emulation LUT that constrains (suppresses) highlights etc.

  • Like 2

Share this post


Link to post
Share on other sites

What Doyle used on Harry Potter is the kind of spill suppression math compositors use for removing fill created by blue/green screen, but that can be used to remove other unwanted color fill as well.  So the suppression math does a better job than desaturating the unwanted color.

So the contrain LUT is a different thing...

 

 

 

Edited by Jussi Rovanperä
  • Like 2

Share this post


Link to post
Share on other sites
15 hours ago, Jussi Rovanperä said:

What Doyle used on Harry Potter is the kind of spill suppression math compositors use for removing fill created by blue/green screen, but that can be used to remove other unwanted color fill as well.  So the suppression math does a better job than desaturating the unwanted color.

So the contrain LUT is a different thing...

 

 

 

Well ok. I didn’t read the article, but that makes sense. 

  • Like 1

Share this post


Link to post
Share on other sites
On 2/8/2018 at 2:38 PM, Jussi Rovanperä said:

So the suppression math does a better job than desaturating the unwanted color.

 

 

Some kind of 3D LUT Creator AB grid?
I mean, more saturated colors are desaturated, but less saturated colors are untouched or desaturated less.
Or something like this?

Edited by Anton Meleshkevich

Share this post


Link to post
Share on other sites

Peter Doyle used simple math expressions to achieve channel suppression, much like a despill operation (which Jussi was referring to). You can do this in Resolve with LUTs (good) or DCTLs (better). One of my first plugins was called BlueBox, which was based on the process Peter Doyle described in an fxphd interview he did several years ago. An extended version of the plugin, called ChannelBox, is described here:

ChannelBox info

Links to the source files and complied plugin can be found there too.

 

  • Like 1

Share this post


Link to post
Share on other sites

i LURVE blue box (and channel box too)  btw... super awesome tools, used every day that i'm on Resolve

Share this post


Link to post
Share on other sites
11 hours ago, dermot.shane said:

i LURVE blue box (and channel box too)  btw... super awesome tools, used every day that i'm on Resolve

What do you use it for?

I'd love to hear real world example. 

I'm scratching the surface of the Matrix potential and i want to really understand what Can be done

Share this post


Link to post
Share on other sites

I would like to learn more about «entering the matrix» too. (Pun intended of course). A life time ago I did study matrix maths at university, but it’s pretty rusty now.

https://en.m.wikipedia.org/wiki/Matrix_(mathematics)

I suppose having some basic maths will help understanding how color matrices operate.

Edited by Dylan R. Hopkin
  • Like 1

Share this post


Link to post
Share on other sites
On 3/2/2018 at 5:11 PM, Paul Dore said:

Peter Doyle used simple math expressions to achieve channel suppression, much like a despill operation (which Jussi was referring to). You can do this in Resolve with LUTs (good) or DCTLs (better). One of my first plugins was called BlueBox, which was based on the process Peter Doyle described in an fxphd interview he did several years ago. An extended version of the plugin, called ChannelBox, is described here:

ChannelBox info

Links to the source files and complied plugin can be found there too.

 

Any thoughts on dealing with DR's harsh highlights technically? I am trying to imitate the baselights carefully compressed very soft and soothing highlight roll off. Either by DCTL, or anything. Any tricks, at all? Thanks in advance.

Share this post


Link to post
Share on other sites

There are Fusion tutorials that explain spill suppression (using that max value of two channels to suppress the third).  Search Simon Ubsdell.  He's a Fusion instructor who goes into detail about that.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.