try using STMAP with a defocus on a UV of the pupil that is controlled by the alpha from your pupil.
Randy S. Little http://www.rslittle.com <http://reel.rslittle.com> http://www.imdb.com/name/nm2325729/ On Fri, Nov 2, 2012 at 4:37 PM, Magno Borgo <[email protected]> wrote: > ** > I would do it with a spline-warp: track the pupil, use it to drive a > spline and distort it at will with the destination curve. > > > > > Hi, I'm working with footage of an eye and I'm trying to dilate the pupil > ever so slightly. The challenge for me is getting the iris to look as it is > contracting accordingly. By rendering out a normal shader from Maya (one > channel from top to bottom, one from right to left and one with facing > ratio) and using it with an IDistort (same method as this guy fakes > refraction in Nuke: https://vimeo.com/30058027), I've managed to push the > pixels around the pupil. It works to some extent, but doesn't seem like a > good way of achieving this. > > How would everyone else go around doing this? Preferably in nuke only. > > > > > -- > Using Opera's revolutionary email client: http://www.opera.com/mail/ > > _______________________________________________ > 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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