[Bf-vfx] Lens workflow diagram in Blender

[François T.]

oh thats great, sorry I didn't know about that.
Well it is quite similar, perhaps mine is a bit more User oriented though.
Anyway I do understand some people will like to have there render distorted
at render time and not in post. While thats not something I would not
recommend in production (for several reason I could list if people needs
to), I guess this pipe could be consider as well especially via cycles and
some kind of "lens shader". I'll update the diagram for this

cheers,

F.

2011/9/30 Ton Roosendaal <ton at blender.org>

> Hi Francois,
>
> Before Tomato started I drafted this diagram to help design desicions:
> http://www.blender.org/bf/trackflow.png
>
> It's quite similar to your diagram, but this is only the blender side.
> There's no crop or overscan features mentioned, but such issues fit in
> easily.
>
> -Ton-
>
> ------------------------------------------------------------------------
> Ton Roosendaal  Blender Foundation   ton at blender.org    www.blender.org
> Blender Institute   Entrepotdok 57A  1018AD Amsterdam   The Netherlands
>
> On 29 Sep, 2011, at 11:17, François T. wrote:
>
> > Well the Red pipe is IMO the best in Blender case becaue of its all
> > in one package thing.
> > Yet if you want to use 3rd party program for instance for doing
> > simulation or rendering in other application or exporting one image
> > of backplate to do a Matte painting in Gimp or so, then the gold
> > pipe is needed.
> >
> > Blender is going to be the first open source and free matchmove
> > application out there, so I expect that it could get very common to
> > integrate it into existing pipeline as a 3rd party for matchmove.
> >
> > There is also a workflow which could let the user import/export lens
> > model to 3rd party:
> > Input uvImage > undistortion (using input plate value) > save EXR
> > Render > Uvpass node (using distord uvImage)
> >
> > this pipe can even be used in Blender to speed up the distortion
> > process. might have a loss of quality though (I'll do another graph
> > to make it more clear)
> >
> > cheers,
> >
> > F.
> >
> >
> >
> > 2011/9/28 Sebastian König <koenig.sebastian at gmx.net>
> > Well the undistorted proxy is already available and working okay so
> > far, just that overscan workflow is missing.
> > And Francois, very nice graph!
> > Though i don't understand what the branch on the very left is for.
> > We already have undistorted proxy creation for the background image.
> > It just misses the overscan option. But then again, it is just
> > logical that the nodes offer that option... Anyway, it looks good
> > and makes sense.
> >
> > Thanks!
> >
> > Seb
> >
> >
> > Am 28.09.2011 um 21:47 schrieb Coen Spoor:
> >
> >> Think its pretty well thought out, the biggest issue right now
> >> would be getting the undistorted footage/proxy as a camera
> >> background for prop placement, which as you noted, isnt in yet. But
> >> hey, if Sergey's on it... :)
> >>
> >> Op 28 sep 2011, om 21:41 heeft François T. het volgende geschreven:
> >>
> >>> Here is a design of the lens workflow (un/distortion plate) using
> >>> tomato, which IMO is suited for a VFX pipeline.
> >>> Most of it is possible already, yet a few things are missing
> >>> (overscan, bkg fit to sensor,.. but Sergey is already on it :p)
> >>>
> >>> Comments, suggestions ?
> >>>
> >>> <BlenderLensWorkflow.png>
> >>>
> >>>
> >>>
> >>>
> >>> --
> >>> ____________________
> >>> François Tarlier
> >>> www.francois-tarlier.com
> >>> www.linkedin.com/in/francoistarlier
> >>> _______________________________________________
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> >>> Bf-vfx at blender.org
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> >>
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> >
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> >
> >
> >
> > --
> > ____________________
> > François Tarlier
> > www.francois-tarlier.com
> > www.linkedin.com/in/francoistarlier
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-- 
____________________
François Tarlier
www.francois-tarlier.com
www.linkedin.com/in/francoistarlier
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