Perhaps I'm missing something, but isn't that what the HSVTool does?
cheers, Diogo On Mon, Jun 9, 2014 at 12:16 PM, Elias Ericsson Rydberg < [email protected]> wrote: > You could do a key on a specified range of hues using the keyer, using > that as a mask for a grade node. That node manipulates the red(rgb->hsv > first) would probably give you the results you're looking for? > > Don't have nuke in front of me but I think that could work. > > Best regards, > Elias Ericsson Rydberg > > måndag 9 juni 2014 skrev Martin Constable <[email protected]>: > > Thats a good idea and actually something I already tried. >> >> After some fiddling similar results can be had. And the results >> themselves are sometime comparable. >> >> However, it is very difficult to control and the effects is very likely >> to spill over into other color values. Drawing an adjustment in ColorLookup >> can offer more local control but is even more difficult to master. >> >> >> >> On 9 Jun, 2014, at 5:22 PM, Adrian Cruceru <[email protected]> >> wrote: >> >> > Try this: >> > >> > Use a colorspace node to change the current color space from linear to >> HSV then use a grade node to color correct just the red channel (which >> becomes the Hue chanel after the colorspace node) then use a second >> colorspace to get the colors back into the linear color space >> > >> > Any color correction applied to the red channel between the two >> colorspace nodes will only alter the hue, so you cna compress it and change >> it as you want >> > >> > Hope it helps >> > >> > Cheers >> > >> > Adrian >> > >> > >> > On Mon, Jun 9, 2014 at 10:01 AM, Martin Constable < >> [email protected]> wrote: >> > Unforgivably I accidentally deleted the questions from the source file. >> > >> > They are: >> > The questions must have got accidentally deleted. They are simple: >> > - Can such an effect be easily achieved with existing tools? >> > - Would you find such a tool useful? >> > >> > Apologies >> > >> > >> > On 9 Jun, 2014, at 3:44 PM, Martin Constable <[email protected]> >> wrote: >> > >> > > Dear Nuke users, >> > > >> > > >> > > I am writing to you in order to ask for your help on a research >> project that I am engaged in with here at Nanyang Technological University. >> I hope you won't regard this as spam. >> > > >> > > I am working with some engineers on a tool whereby the local hue >> contrast of a region may be expanded or compressed. Exactly what we mean by >> this will take a bit of explanation which I hope is delivered in the linked >> pdf. >> > > >> > > We are now hoping to publish and are looking for feedback from >> professionals as to the usefulness and novelty of our approach. Ideally, we >> would like people who have a special interest in color. >> > > >> > > A very short description is here, as is two questions we would like >> to ask: >> > > https://dl.dropboxusercontent.com/u/3788380/HUE_TOOL_FEEDBACK.pdf >> > > >> > > We are working to a tight schedule (deadline = this Friday 13th) and >> do not have time for a full user study. However, one or two lines of >> feedback will be very helpful, especially from users of your caliber. >> > > >> > > I thank you all sincerely in advance >> > > >> > > Martin Constable >> > > >> > > >> > > >> > > CONSTABLE Martin | School of Art Design and Media | Nanyang >> Technological University >> > > 3-21, 81 Nanyang Drive, Singapore 637458 >> > > Tel: (65) 6316-8729 GMT+8h | HP: (65) 9329-4064 | Fax: (65) 6795-3140 >> | Email: [email protected] >> > > >> > > >> > > >> > > _______________________________________________ >> > > Nuke-users mailing list >> > > [email protected], http://forums.thefoundry.co.uk/ >> > > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> > >> > _______________________________________________ >> > Nuke-users mailing list >> > [email protected], http://forums.thefoundry.co.uk/ >> > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> > >> > >> > >> > -- >> > Adrian Cruceru >> > df(x) >> > _______________________________________________ >> > Nuke-users mailing list >> > [email protected], http://forums.thefoundry.co.uk/ >> > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> >> _ > > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >
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