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Rotoscoping with the new Planar Tracker

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Simon Ubsdell
Rotoscoping with the new Planar Tracker
on Sep 7, 2017 at 12:34:13 pm

Having just spent a day doing some very tricky rotoscoping, I have been hugely impressed by how much easier it is with the new planar tracker in Fusion 9. It's genuinely shaved many hours off the job and made it a whole lot more fun, if you can say that about roto!

A lot of people think of a planar tracker as solely a tool for inserting screens or text into a background, but really that's only a small part of what makes it so useful.

If you have used the tracker in Resolve to track masks you will already know how this works. I don't know if the Fusion planar tracker is harnessing the same underlying technology but the results are just as awesome. It can really lock onto the trickiest of features and provide an automated solution that often needs only small amounts of manual tweaking.

I encourage you to try this if you haven't already - it's a game changer to have this now built into Fusion.

I made a short introductory tutorial about the planar tracker, but I only touched on how useful it is for more complex roto:







Make sure to use the Create Planar Transform option to maximise the value of this feature.

Simon Ubsdell
tokyo productions
hawaiki


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Michael McCune
Re: Rotoscoping with the new Planar Tracker
on Nov 4, 2017 at 4:52:58 pm

Simon; RE the new Fusion planar tracker: how well would this tool work as a polygon tracker?

That is, track a set of points outlining an object with irregular dimensions, such as a face outline. A kind of Face Refinement tool, as Resolve now offers. A kind of auto-rotoscope tool.

We see in these forums repeated mention of the fact-of-life that sometimes one must roto the shape. This is fine for short clips. But not humanly possible for long clips, such as an interview: simple enough in regards to the shape but infeasible in respect of the many thousands of frames required. And no slaves.

Fusion ChromaKey masking seems the better of the options I have tried for this sort of work.


Thoughts???

Thanks, Mike


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Simon Ubsdell
Re: Rotoscoping with the new Planar Tracker
on Nov 4, 2017 at 5:40:36 pm
Last Edited By Simon Ubsdell on Nov 5, 2017 at 1:56:43 pm

[Michael McCune] "RE the new Fusion planar tracker: how well would this tool work as a polygon tracker?"

Obviously as the name implies the planar tracker tracks a "plane" in your image and then applies basic transforms to that. What it doesn't do is affect the position of individual roto points.

However, it is still immensely useful for things like facial touch-up. You can get a good track off any "flattish" surfaces such cheeks, foreheads, upper lips, chins, etc..

My suggest method is to track the area you want to fix, then a planar transform node and use it to transform a "fixed plate" of the area, to which you have applied to roto mask.

Remember to add grain to your fixed plate to avoid it looking "stuck on".

I'll try to do a tutorial on this at some point.

Simon Ubsdell
tokyo productions
hawaiki


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