[Nuke-users] Roto Bezier motion to Vector blur
Is there a way to get Roto motion to drive a vector blur? i tried motion Blur 2d but that only works for transforms ___ 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
RE: [Nuke-users] Roto Bezier motion to Vector blur
Use the roto to drive a spline warper over a uv plate which you can make in nuke. The use that warped uv plate to drive your blur From my Android phone on T-Mobile. The first nationwide 4G network. Original message From: David Yu dave...@gmail.com Date: 08/15/2013 10:13 AM (GMT-08:00) To: discussion, Nuke user nuke-users@support.thefoundry.co.uk Subject: [Nuke-users] Roto Bezier motion to Vector blur Is there a way to get Roto motion to drive a vector blur? i tried motion Blur 2d but that only works for transforms___ 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
Re: [Nuke-users] Roto Bezier motion to Vector blur
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On Fri, Aug 16, 2013 at 1:21 AM, David Yu dave...@gmail.com wrote:
Great i'll try that thanks!
On Fri, Aug 16, 2013 at 1:20 AM, RsLittle randyslit...@gmail.com wrote:
Use the roto to drive a spline warper over a uv plate which you can make
in nuke. The use that warped uv plate to drive your blur
From my Android phone on T-Mobile. The first nationwide 4G network.
Original message
From: David Yu dave...@gmail.com
Date: 08/15/2013 10:13 AM (GMT-08:00)
To: discussion, Nuke user nuke-users@support.thefoundry.co.uk
Subject: [Nuke-users] Roto Bezier motion to Vector blur
Is there a way to get Roto motion to drive a vector blur?
i tried motion Blur 2d but that only works for transforms
___
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Re: [Nuke-users] Roto Bezier motion to Vector blur
I don't think you can do that with roto, since the only place where it can interpolate motion is at the edges (but not inside the shapes). So in theory you could get a kind of a vector map per pixel but that map would be limited to where the roto edge is located, since a roto shape is post-filled. You could try to extract (guess) the vectors from roto motion but this is prone to artifacts. If you want to add moblur inside of an area I would use Kronos with different plates used as source and warp. On 15 aug. 2013, at 19:39, David Yu dave...@gmail.com wrote: I turn on motion blur to see the effect which i want to use as the vectors that will drive the vector blur ___ 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
Re: [Nuke-users] Roto Bezier motion to Vector blur
David, Not sure if this will give you exactly what you're after, but this is a technique I've used in the past to replicate motionblur from the motion of a shape. One way to get motion vectors that represent the motion of your shape is to do a splinewarp that warps between your shape and the same shape offset by 1 frame. Then apply this SplineWarp to a coordinates map (not normalized, but actual pixel coordinates), substract the original map from the SplineWarp result, and use that as your motion vector information inside VectorBlur. Attached is an example script. Hope it helps. On Thu, Aug 15, 2013 at 11:26 AM, Julik Tarkhanov ju...@hecticelectric.nlwrote: I don't think you can do that with roto, since the only place where it can interpolate motion is at the edges (but not inside the shapes). So in theory you could get a kind of a vector map per pixel but that map would be limited to where the roto edge is located, since a roto shape is post-filled. You could try to extract (guess) the vectors from roto motion but this is prone to artifacts. If you want to add moblur inside of an area I would use Kronos with different plates used as source and warp. On 15 aug. 2013, at 19:39, David Yu dave...@gmail.com wrote: I turn on motion blur to see the effect which i want to use as the vectors that will drive the vector blur ___ 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 roto_to_vectorblur_test.nk Description: Binary data ___ 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
