or download 'tracker3dtocornerpin' from Nukepedia which does just this with
reference frames etc, match move, stabilise type stuff
http://www.nukepedia.com/gizmo-downloads/transform/tracker3dtocornerpin/
Howard
>________________________________
>From: Hugh Macdonald <[email protected]>
>To: Nuke user discussion <[email protected]>
>Sent: Sunday, 4 September 2011, 0:59
>Subject: Re: [Nuke-users] CameraTracker to PlanarTracker
>
>
>As a slightly manual solution, you could put 4 Axis nodes into your scene and
>push each one through a Reconcile3D node, and pipe the 2D resulting values
>into a CornerPin node...
>
>
>Hugh Macdonald
>nvizible – VISUAL EFFECTS
>
>[email protected]
>+44(0) 20 3167 3860
>+44(0) 7773 764 708
>
>www.nvizible.com
>
>On 30 Aug 2011, at 23:01, Ned Wilson wrote:
>
>So there are a couple of instances where PlanarTracker gets pretty confused.
>For example, say you are trying to track a television set which moves out of
>frame. This would confuse PlanarTracker, or it least it does in my limited
>experience using the tool.
>>
>>What I have done in these instances is to use CameraTracker and camera solve
>>the shot, being sure to seed plenty of points around the TV itself. Then, I
>>would select a group of solved 3d points, right click on them and put a card
>>through them, and then use the card and the solved camera to project some
>>roto on, for instance. Alternatively, I may select a few of the solved
>>points, and using a few Reconcile3D nodes, create a Tracker node.
>>
>>Either way, what I'm doing is using solved 3D structure to create a plane,
>>and then using that to track something into the shot. Is there an automated
>>way to simply turn 3D solved points into a PlanarTracker node?
>>
>>-n
>>
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>
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