Keep in mind that if you’ve rendered out any sort of non-deep pass with filtering, those filtered values will be wrong and likely introduce artifacts.
On Jul 24, 2014, at 6:30 AM, Johannes Hezer <[email protected]> wrote: > Hi David, > > as Deke said "Deep compositing" is sth different in Nuke. > Deep Images truely store multiple depth samples in a pixel, so you can > extract different mattes from it and correctly merge fog around a character > for example. Deep Images are huge in filesize compared to 32bit exrs. > Pointworld however stores the xyz coordinates per pixel. > To my knowledge there is no "tool" that works like a Zmerge with pointworld > data. But you can convert pointworld into depth if you have the camera > available. > Cameraspace is what is important to determine if an object is in front of > another, hence deepimage data is a much better depth pass. > Then you can use a zmerge to comp them together, but with strong limitations > and edge problems, as Deke pointed out. > > We use pointworld data to extract masks, all tools from Ivan are pretty neat > and on nukepedia. > P Matte, P Ramp, P Noise > Important is to keep the pointworld in 32bi. > > Hope this helps a bit. > > Johannes > > > > On 07/24/2014 03:57 AM, David Rutherford wrote: >> I have searched pretty thoroughly but so far I have not been able to find >> any information on how to use a world position pass to comp two CG objects >> together. I have a bunch of test objects rendered with a separate beauty >> pass and a world position pass and a particle cloud rendered with an >> embedded world position pass. I want to comp them together so that the >> particles are merged correctly surrounding the objects both in front and >> behind. The goal is to do away with hold outs in the particle render. >> >> What is the work-flow for doing this. Do I need more than the world position >> pass? Is this what is labelled "deep" compositing or is this actually >> something else. >> Any pointers, tips or a link to a tutorial would be greatly appreciated. >> >> David. >> > > > -- > STUDIO RAKETE GmbH > Johannes Hezer, Compositing TD & Stereoscopic SV > Schomburgstr. 120 > D - 22767 Hamburg > > [email protected] > Tel:+49 (0)40 - 380 375 69 - 0 > Fax:+49 (0)40 - 380 375 69 - 99 > > ------------------------------------------------------ > Pflichtangaben laut Handelsgesetzbuch und GmbH-Gesetz: > > STUDIO RAKETE GmbH > Schomburgstr. 120 D - 22767 Hamburg > > www.studiorakete.de / [email protected] > > Geschaeftsfuehrer: Jana Bohl > > Die Gesellschaft ist eingetragen im Handelregister des > Amtsgerichts Hamburg unter der Nummer HR B 95660 > USt.-ID Nr.: DE 245787817 > > > > ____ ESET 10118 (20140718) ____ > The message was checked by ESET Mail Security. > > _______________________________________________ > 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
