that's more or less what ITransform does under the hood.
On 3/11/12 12:57 PM, Randy Little wrote:
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]
<mailto:[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.
--
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