Hi Patrick, There is a way of doing this by displacing those deep sample into a difference coordinate then crop them. Use a deep expression with this : rgba.alpha==0?deep.front==-1:deep.front rgba.alpha==0?deep.back==-1:deep.back Then put a deep crop node using only the znear a bit above 0 (like 0.001) and then your sample will disappear ! Let me know if it does work for you. In Nuke 7 the deep holdout will keep the deep stream ;) Cheers Denis
2012/11/16 Patrick Heinen <mailingli...@patrickheinen.com> > Hi Colin, > > thanks for you reply! Unfortunately this won't work. I have "dead" alpha > samples pretty much everywhere, so also in front of the element I would > like to keep. Doing a DeepHoldout results in a pure black image. And with a > 2d DeepHoldout I loose my deep samples anyway. Using the DeepMerge set on > holdout has the same result. Also I couldn't find a "remove empty pixel" > checkbox, do you mean the "drop hidden samples"? > So I guess there is no way of getting rid of deepsamples without writining > my own DeepOp? > > Best Regards > Patrick > > ----- Original Message ----- > From: colin.doncas...@gmail.com > To: nuke-users@support.thefoundry.co.uk > Date: 17.10.2012 19:05:27 > Subject: Re: [Nuke-users] Delete Deep Pixel samples > > > > > > You could use a deep expression to create a version of the image that > turns all samples with an alpha of 0.0 to an alpha of 1.0 and black RGBA > with the rest being set to 0.0 - then use that as a deep holdout with > remove empty pixels on. > > > > Maybe. I haven't tried it with Nukes tools - but a thought. > > > > On 2012-10-17, at 12:18 PM, mailingli...@patrickheinen.com wrote: > > > >> Hi everyone, > >> > >> even though this might sound crazy, is there a way to delete deep > samples in Nuke? I have a rendering here, where some pixels have an alpha > value of 0 and still a bunch of deep samples, which I want to get rid of. > >> I tried using the deep expression node with > "deep.front=rgba.alpha==0?0:deep.front". First of all, the expression > doesn't do what I want, instead I get 0 everywhere, wheter alpha is 0 or > something else. Second with a DeepSample Node I still have those samples, > now with 0 for deep.front,back,r,g,b and a. > >> Any ideas? > >> > >> Best Regards > >> Patrick > >> _______________________________________________ > >> Nuke-users mailing list > >> Nuke-users@support.thefoundry.co.uk, http://forums.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://forums.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://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >
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