oops - Must have been on my to do list Heres the creative crash link http://www.creativecrash.com/nuke/downloads/gizmos/color/c/secondary-colour-and-vibrancy
H ________________________________ From: Spider <[email protected]> To: Nuke user discussion <[email protected]> Cc: Howard Jones <[email protected]> Sent: Fri, 25 March, 2011 8:18:43 Subject: Re: [Nuke-users] Extract CMY Color id Howard, I can't find this on nukepedia, what is the right name please ? Spider 2011/3/25 Howard Jones <[email protected]> Yes that would create a semi magenta edge and would be extracted as such I thought the mattes were cmy though? > > >I'll try it in a bit and check but it returns the colours split as described >along with overlap issues as you describe because they are in the image. > >Howard > >On 24 Mar 2011, at 23:16, Hugh Macdonald <[email protected]> wrote: > > >I've never quite seen how anything that crosses channels, if there's any >anti-aliasing involved, can not have issues... >> >> >>If a red and a blue matte meet, and there is anti-aliasing along the edges, >>causing a pixel to be (0.5, 0.0, 0.5), how is that different to a similar >>pixel >>along an antialiased edge where a magenta matte meets black... >> >>Hugh Macdonald >>nvizible – VISUAL EFFECTS >> >>[email protected] >>+44(0) 207 659 2038 >>+44(0) 7773 764 708 >> >>www.nvizible.com >> >>On 24 Mar 2011, at 23:08, Howard Jones wrote: >> >>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 <[email protected]> >>>To: Nuke user discussion <[email protected]> >>>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 <[email protected]> >>>To: Nuke user discussion <[email protected]> >>>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 <[email protected]> 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 <[email protected]> >>>> To: Nuke user discussion <[email protected]> >>>> 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 <[email protected]> >>>>> >>>>> 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 <[email protected]> >>>>> 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 <[email protected]> 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 >>>>>> > [email protected] >>>>>> > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>>>>> > >>>>>> > >>>>>> _______________________________________________ >>>>>> Nuke-users mailing list >>>>>> [email protected] >>>>>> 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 >>>>> [email protected] >>>>> 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 >>>> [email protected] >>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>>> >>>> >>>_______________________________________________ >>>Nuke-users mailing list >>>[email protected] >>>http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>>_______________________________________________ >>>Nuke-users mailing list >>>[email protected] >>>http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>> >> _______________________________________________ >Nuke-users mailing list >[email protected] >http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > >_______________________________________________ >Nuke-users mailing list >[email protected] >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 [email protected] http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
