Re: multi camera projections

["Tim Leydecker" <BauerOink(at)gmx.de>]

New dawn, new day, fresh ideas. Bad breath with a funny taste, tho...
SoI´m trying to come up with something easy to (p)reset and digest.

Is there a way to have something like a "Texture reference object"?
That´s a Maya term, describing the link of a static object used for
projecting textures and UV coordinates and having those magically
appear on the deforming mesh - without having to explicitely transfer.

As an extra asset, would XSI´s hierarchical editing mode, e.g. the
modeling construction, shape, animation and secondary shape mode
allow to have a system that takes the position of an object at the
current time into account? Frame 1, projecting through camera 1
and blending the result with a projection on frame 10 through
camera 10, even thought there´s deformation or movement?

The advantage would be, simply, you have a turntable starting
at frame 1 with the basic pose and the character is moving it´s
arms so you can add "makeup" under his armpits at frame 10.
Like using the deformation test to splotch on colors that fit it.

As I said, that´d be an extra asset - most likely using wheightmaps?

First, I´d like to get the mattepainting workflow nailed (ahem, copied).
Here´s an article that has another nice implementation or usage described:

A-mazing, CafeFX using XSI, the bit about "crazy legs" on page 2:
http://features.cgsociety.org/story_custom.php?story_id=3940&page=2

Cheers

tim








----- Original Message ----- 
From: "Tim Leydecker" <BauerOink(at)gmx.de>
To: <XSI(at)Softimage.COM>
Sent: Tuesday, February 27, 2007 10:18 PM
Subject: Re: multi camera projections


> Hi guys,
>
> thanks for the suggestions. Peter´s workflow is similar to what
> I´d do with ZBrush/ZAppLink to Photoshop, it´s just that this
> time there´s loads of objects, instances and no good UVsets.
>
> Coming to think of it, I guess what I really am after is a way
> to keep the projections "alive", blend them using the painted
> holdout mattes and only rendermap if absolutely neccessary,
> saving on having to unwrap all those many little bits and pieces.
>
> Stupid enough, I´m sure I had an appropriate shading network
> preset for this fiddled together allready but I can´t find it anymore.
>
> Must be on backup somewhere, the entire process was inspired
> by Jeremy Pronk´s Projection shader www.thereisnoluck.com
>
> It´s most likely that mine was not that elaborate, thought.
> Oh, I don´t know. Maybe I´ll just take a brake for today...
>
> Cheers
>
> tim
>
>
>
>
> ----- Original Message ----- 
> From: "peter boeykens" <peter_b(at)skynet.be>
> To: <XSI(at)Softimage.COM>
> Sent: Tuesday, February 27, 2007 9:56 PM
> Subject: Re: multi camera projections
>
>
> > the workflow I used in the past was to create a good UV projection for the object.
> > and  one camera projection per photo.
> > rendermap each photo to the uv projection,
> > layer them in photoshop and paint the blending there.
> > it required some back and forth between photoshop and XSI while painting, but it 
> > wasnt too bad.
> >
> > you could paint a vertex map or weightmap for the blending of each 
> > cameraprojection in XSI, rendermap them too, and bring them into photoshop, in 
> > order not to have too much trial and error while painting...
> >
> >
> >
> >
> >
> >
> >
> > ----- Original Message ----- 
> > From: "Tim Leydecker" <BauerOink(at)gmx.de>
> > To: <XSI(at)Softimage.COM>
> > Sent: Tuesday, February 27, 2007 8:27 PM
> > Subject: multi camera projections
> >
> >
> > Hi there,
> >
> > I know this has come up before but I can´t find it in the archives...
> >
> > I´m looking for the best way to mix multiple camera projections
> > and successively baking them into textures without destroying the
> > results of the previous projections, either by limiting the effect to
> > "facing" geometry or by painting an additional holdout matte for
> > areas that shouldn´t be affected in re-baking.
> >
> > Obviously a workflow inspired by anime/cell/matte painting.
> >
> > Great examples (some even used XSI) would be in the Animatrix
> > and Final Fantasy (3d) films, it´s that what I after, technically at least...
> >
> > Cheers
> >
> >
> > tim
> >
> >
> >
> >
> > ---
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