in that case btw the red matte would be separate to the magenta, any overlap
would be black in the respective channels.
H
________________________________
From: Howard Jones <mrhowardjo...@yahoo.com>
To: Nuke user discussion <nuke-users@support.thefoundry.co.uk>
Sent: Thu, 24 March, 2011 22:45:32
Subject: Re: [Nuke-users] Extract CMY Color id
should do...
splits into
primary (rgb outside of cmy bnw)
secondary (cmy outside of rgb, bnw)
tertiary (bw (split into bnw) outside of rgb, cmy)
H
________________________________
From: Deke Kincaid <dekekinc...@gmail.com>
To: Nuke user discussion <nuke-users@support.thefoundry.co.uk>
Sent: Thu, 24 March, 2011 22:33:12
Subject: Re: [Nuke-users] Extract CMY Color id
This pulls perfect mattes even when you have a magenta and red matte
on top of each other or any other primary/secondary overlapping?
-deke
On Thu, Mar 24, 2011 at 15:17, Howard Jones <mrhowardjo...@yahoo.com> wrote:
> Hi
>
> <Shameless plug>
> my secondary colour node on nukepedia/creative crash - splits any image into
> rgb, cmy and bnw (black neutral whites).
> The output will show you any set of above ie rgb, cmy, bnw mapped into the
> rgb channels.
>
> So plug in your image choose cmy (as rgb) and in the rgb channels you will
> have cyan magenta and yellow mapped to rgb respectively, so as long as its
> pure cmy you get perfect mattes instantly
>
> </Shameless plug>
>
> Howard
>
>
>
> ________________________________
> From: Spider <spi...@555lab.com>
> To: Nuke user discussion <nuke-users@support.thefoundry.co.uk>
> Sent: Thu, 24 March, 2011 20:14:50
> Subject: Re: [Nuke-users] Extract CMY Color id
>
> Merci Julien,
> I'll try this at home in few minutes.
> Maybe my 3d gay, sorry i mean guy like pink ;)
> Spider
>
>
>
> 2011/3/24 Julien Chandelle <julienchande...@gmail.com>
>>
>> I just did this gizmo, you can pick any color choose if you want extract a
>> matte or apply the alpha on your picture with a premult if you want. Of
>> course I agree with Deke this way suck, an exr with matte is better but I
>> prefer several RGB matte pass.
>>
>> set cut_paste_input [stack 0]
>> version 6.2 v2
>> push $cut_paste_input
>> Group {
>> name Select_color
>> selected true
>> xpos -168
>> ypos 2
>> addUserKnob {20 User}
>> addUserKnob {41 color T Constant1.color}
>> addUserKnob {6 out_alpha l "Out Alpha" +STARTLINE}
>> addUserKnob {6 premult +STARTLINE}
>> }
>> Constant {
>> inputs 0
>> channels rgb
>> color {0.3005436957 0.02121900581 0.3762620389 1}
>> last 100000
>> name Constant1
>> xpos 38
>> ypos 109
>> }
>> Input {
>> inputs 0
>> selected true
>> xpos -101
>> ypos 86
>> }
>> Difference {
>> inputs 2
>> gain 90
>> name Difference1
>> xpos -101
>> ypos 126
>> }
>> Invert {
>> channels alpha
>> name Invert1
>> xpos -101
>> ypos 171
>> }
>> Premult {
>> name Premult1
>> xpos -101
>> ypos 209
>> disable {{!parent.premult i}}
>> }
>> Shuffle {
>> red alpha
>> green alpha
>> blue alpha
>> name Shuffle1
>> xpos -101
>> ypos 235
>> disable {{!parent.out_alpha i}}
>> }
>> Output {
>> name Output1
>> xpos -101
>> ypos 287
>> }
>> end_group
>>
>>
>> On Thu, Mar 24, 2011 at 8:57 PM, Deke Kincaid <dekekinc...@gmail.com>
>> wrote:
>>>
>>> Keyer is pretty much it. There are gizmos which just automate doing
>>> id channels on nukepedia and creativecrash but underneath they are all
>>> just keyers.
>>>
>>> For future though, get your cg guys to render multiple mattes to a
>>> single exr instead of using id's which just suck, especially pink that
>>> it likes to throw in there. There are mel scripts for Mental Ray and
>>> Vray which automate doing this.
>>>
>>> -deke
>>>
>>> On Thu, Mar 24, 2011 at 12:50, Spider <spi...@555lab.com> wrote:
>>> > Hi everyone,
>>> > I have a question maybe already ask (i checked before)
>>> > i'd like to know what is the best way to extract CMY to make a object
>>> > matte,
>>> > i guess that their is a better way than use keying nodes.
>>> > May someone can light me ?
>>> > i put in attachement an example.
>>> >
>>> > Thanks.
>>> > Spider
>>> >
>>> >
>>> > --
>>> > Luddnel Spider Magne | Director - Lead Motion Compositor
>>> > 555Lab – Alchemy between you and us
>>> > 24 rue du Pré St-Gervais 93500 Pantin
>>> > Office (+33)148 453 555 | Fax (+33)171 864 387
>>> > Mobile (+33)699 434 555 | 555lab.com
>>> >
>>> > _______________________________________________
>>> > Nuke-users mailing list
>>> > Nuke-users@support.thefoundry.co.uk
>>> > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>>> >
>>> >
>>> _______________________________________________
>>> Nuke-users mailing list
>>> Nuke-users@support.thefoundry.co.uk
>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>>
>>
>>
>> --
>> Julien Chandelle
>> GSM : +32 (0) 494 277 542
>> julienchandelle.be
>> || Nuke , AE & Fusion Compositor ||
>>
>>
>> _______________________________________________
>> Nuke-users mailing list
>> Nuke-users@support.thefoundry.co.uk
>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>>
>
>
>
> --
> Luddnel Spider Magne | Director - Lead Motion Compositor
> 555Lab – Alchemy between you and us
> 24 rue du Pré St-Gervais 93500 Pantin
> Office (+33)148 453 555 | Fax (+33)171 864 387
> Mobile (+33)699 434 555 | 555lab.com
>
> _______________________________________________
> Nuke-users mailing list
> Nuke-users@support.thefoundry.co.uk
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>
>
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