[JulianS]

Hello there

Is there a way to displace an image base on surface information coming from 3d?
Here is a little visualization of what I am trying to achieve ( made in photoshop).
Please be aware i am new to nuke.

[JulianS]

So looking around i found this: is almost what i am trying to do but only with one section not with the whole image.

Ideas anyone?



With a little tinkering and the right movie as input, you can make a displacement node perform UV mapping within Shake, putting an ordinary still image into motion.
Instead of mapping an image onto an object, map absolute UV addresses.





By subtracting a reference pattern of untransformed UV addresses from a sequence of transformed addresses, you create an image of relative offsets, which is exactly what a Shake displacement node wants as input.
This means you can render an animation now, and decide later what image you wish to UV map onto that object.








By blurring the transformed UV's you can get some freaky warp effects.
For some additional background,



check out:

http://www.digitalartform.com/archives/2005/07/uv_map_now_or_u.html
http://www.digitalartform.com/archives/2004/10/smear_now_or_sm.html

[rueter]

this Shake workflow is what Nuke's STMap node will do for you: re-textureing something based on a uv render. here is a simple tutorial for it:
http://www.studiodaily.com/main/trai...hics/7574.html

you could also create a cylinder in nuke, project the original image onto it, then use the displace node and a gradient map to displace the geo to create whatever shaped bump you want.

[JulianS]

That is great that is exactly what i was looking for!

About the cylinder, that was just an easy way to explain what i am trying to do, but at the end it will be a more complex shape.

Can't wait to try this STMap.

Once again thank you ruter.

[Tkaos]

Hello,

this post is very interesting, unfortuatly I don't understood how you use the stmap node to deform the geometry (which can be an image.) I mean the stmap is used to map a texture into the ouput image via an uv pass. right ? so how it can deform an image (let say our soda bottle) like in the first example ?

[Diogo Girondi]

Well the STMap will "remap" your image using the coordinates from the UV pass, so if your UV pass has the "displacement" info in it, it will displace your image to fit that information. It's the same process actually.

[philmc]

Attention, a noob question coming up!

I'm trying to do frank rueters tutorial "texture warping": http://www.studiodaily.com/main/trai...inup/7574.html

Now, my question is, what is the "uv.jpg"? Is it actually a normal map?
I'm using 3DS Max 8, so what do i have to use to get this "uv-render" frank is talking about?
I know, that is basic 3d knowledge, but hopefully some one could explain that to me.

Thanks in advance!

- Phil

[hugo_guerra]

Originally Posted by philmc

Attention, a noob question coming up!

I'm trying to do frank rueters tutorial "texture warping": http://www.studiodaily.com/main/trai...inup/7574.html

Now, my question is, what is the "uv.jpg"? Is it actually a normal map?
I'm using 3DS Max 8, so what do i have to use to get this "uv-render" frank is talking about?
I know, that is basic 3d knowledge, but hopefully some one could explain that to me.

Thanks in advance!

- Phil

To learn how to output a UV, or any pass from MAX just watch these tutorials videos I have made, I think it will help you make a EXR with a UV pass.

For VRAY:

http://www.vfxtalk.com/forum/3ds-max...3.html?t=14683

For Mental Ray or Scanline:

http://www.vfxtalk.com/forum/3ds-max...5.html?t=14675

[philmc]

to hugo_guerra:

thank you very much. the advice to use OpenEXR for the uv channel was the right thing to do.

Very good video as well.


- Phil