According to the reference manual, it'll snap uv coordinates based on the camera angle.

I'm trying to think of how that would be useful.

It doesn't say how to save a uv map of the snap to paint on it.  ??

This thread shows how to do it in Poser, and what it does.

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2280990

And here is a tutorial. Although it isn't using Poser, it demonstrates what this sort of thing is for.

http://www.cgarchitect.com/resources/tutorials/misc/tutorial2.asp

Basically, it's a very fast way to lift some 2D object from a photo and quickly make a 3D version. The 3D version will not look right if you move move or rotate it more than about 20 to 30 degrees in any direction, but it can work in many cases. The tutorial shows the creation of a whole building, but that's not the most common use case.

Imagine you have a need to make a trash filled alley. You want to quickly make a few cardboard boxes to throw around. Photograph some boxes, position a Poser box in front of the photo, and you can instantly map the photo box onto the 3D box. Then you can move several of these into place in your scene as background stuff, freely moving them and, within some reasonable limits, you can rotate them a bit.

It's a lot less work than taking six photos of a cardboard box and assembling them into the prop's UV map layout.

I loaded each photo into Poser, importing it as a background.

In front of the plate, I positioned and scaled a Poser sphere. (Not the best shape for this, but I don't have a plate shape handy.)

In front of the soap package, I positioned a Poser box.

Applying perspective UVs, the elements of the photos were mapped onto the box and sphere. Now I can move the boxes and plates around. The plates don't rotate well, because my sphere shape is completely wrong, so i didn't rotate them. But the box can rotate quite a bit - as much as 90 degrees.

not bad! it's useful for quick camera-mapping of some objects, sorta like the old canoma software.

Well this was informative!  Thanks folks - always blipped right on past this feature.

Wow, that's fabulous.  Thanks so much!

I've been slaving over making linzer tart cookies with Wings.  
Just to throw a couple of cookies on a table top.

The perspective uv method looks much easier. 

So, the trick here is to place the object in front of the photo.

Do you think this method will work well with a geodome? 
It's going to have to be scaled to cover the area of the poser universe.

I used Maya paint effects to paint a galaxy cluster.  It would be awesome to make it curve around the scene.

BB,

You just never cease to amaze me!  Thanx for the useful tutorial o' the day! :biggrin:

To help prevent this problem, flatten the dome before you apply the perspective UV. This will make the scene "wrap" a little better. Not perfect, but better.

Here is what happens when you don't flatten it first. See how the stars at the edge are smeared and stretched.

I added a planet just to make it interesting.

Oh and for this type of thing, you do not want to "light" the dome.

Go into its shader. Load your image into an Image_Map node as usual, but plug it into Alternate_Diffuse.

Set Diffuse_Value and Specular_Value to 0. This will turn off all lighting for this object It will just render the image as is.

ah! Ye Olde Star Sphere

now to make it interesting, create a curved section of mesh, map onto that a nebula with transmaps and you can move it where ever you want :)

a similar setup was used for Babylon 5

It looks gorgeous.   I can't wait to get home and start working on it.

That first one would be great for a starship warp special effect.

Haven't watched Bab5 in a long while. 
Poor Garibaldi, what Fester did to him.

That's excellent!

make it a little darker and it will fit 100% in the BG

bravo

Quote - That's excellent!

Thanks.  I prefer the refraction technique, myself, but this still has its uses.

just for fun I tried exporting to .obj and tried .3ds, but poser only exported the preview material with it.

Found another tutorial on the perspective uvs magic button:
http://www.daz3d.com/i/tutorial/tutorial?id=1519&_m=d

Little_Dragon that is cool! Thanks.

People used to use Create Perspective UVs to make detail areas across seams on a figure for tattoos on the arms of M2 and V2... you would group the area on the arm... line the camera up to it head on... spawn a prop and create the perspective UV... then a tattoo full size could be mapped/trans mapped to the "decal" which could be parented... worked okay if the bends didn't deform the arm too much.

I used to have a smoothed out face morph for the head and would use Perspective UV to clone a mug shot face onto it... was good from about a 45 degree angle off frontal.

Also I saw a tutorial for creating a magnifying lens effect by creating perspective UV onto a sphere placed over a background image and then using z-scale to create the illusion of refraction.

I loved those early Canoma scenes but could never work out how to make them... anyone ever build lo-res scenes using primitives and perspective mapping? It is fun to have a background image that has a few degrees of play for the camera.

I wonder if you could use perspective UV to paint clothes on background figures from clothing catalog images?

The trick would be the shape of the model to line up with the catalog image?

I haven't tried the p uv on a figure yet, just props.

It works equally well on figures, though due to the limitations of the grouping tool UI you must apply the perspective UVs separately to each body part.

In a case like that you could spawn a prop of the figure by exporting or with the ockham or D3D script at least for a still image. Okham's script is called "furniturize" or something like that IRC and D3D's is called "prop from figure" or something like that. I use them to reduce render overehead by turning background figures into props along with their clothes.

I've come to really, really love this poser feature.

 Thanks for reviving this thread! I'd totally forgotten what a powerful tool this can be!

Quote - In a case like that you could spawn a prop of the figure by exporting or with the ockham or D3D script at least for a still image. Okham's script is called "furniturize" or something like that IRC and D3D's is called "prop from figure" or something like that. I use them to reduce render overehead by turning background figures into props along with their clothes.

'prop from figure' sounds nifty.

exporting a figure to obj and re-importing does something (undesirable) to the material names. 

Attached Link: http://www.sharecg.com/pf/ockham

found the Figure to Prop script!!! :woot:

It's in the Rendo freebies under Dimension3d.