Baking camera projection

Hi guys,
another day, another question

So I'm working on transforming a painting into a 3D environment with parallax effect and right now, I'm transforming a basket which is hanging on the wall into a "3D object".
So I've settled a camera which is projecting that basket and two planes on which the basket is projected on. I would like to bake in these sides projection onto those shapes and make all the area that there is nothing projected on invisible. Do I make any sense at all?

Long story short, bake the projection onto the planes, make all the black area aroung the basket opaque

I've noticed that if I pull down Alpha slider to zero of the plane, black background disappears but the basket itself became slightly opaque as well

Does your basket image input have a workable alpha channel?

Yeah, its a png with an alpha channel.

I found that:
viewtopic.php?f=22&t=36659#
but its slightly different from my thing.
How I could adjust it to my comp?

Add a Catcher?

What to pipe it into? The only node with material input is an actual shape on which the bitmap is projected, but when I plug it into it, it completely disappear

UPDATE:

I've changed how the bitmap is projected (changed it from light to texture and it worked just fine).

Thanks a lot man.

Perhaps you know how to bake the that projection onto the shape? I'm pretty sure my tutor showed it to me some time ago but I forgot

When I do these projection mappings I usually make a rough 3D model to mimic the overall object shape and then project on it. In your case that would be a basket. Play with 3D primitives, combine them, bend them and then project the basket onto it. Don't forget to give it some bump mapping as well, it would look awesome on those weaves.

Really good idea wiith that bump map. Ill get into it as soon as Ill manage to bake that projection onto my primitives

You can't do a bumpmap with a texture projection (without something like CustomShader3D). You have to project UVW's to do that.

How to do that then?

UVMap3D set to Camera

So, I set the UVMap3D note mode to Camera, then plug in the projection camera to its camera input or scene input? Then what?

Hi guys,

I'm still looking how to bake that object so I can scale and move it freely around the comp.
Curently, It consists of two planes onto which texture is projected.

If you put a 3Dtransform behind the two (I guess merged) objects, after that they will move/rotate/scale as one, effectively doing what you're looking for if I'm correct.

As you can see, I can move the masket around using Merge3D handles, but this is not what I'm looking for.
I'm looking for a solution, so I could get rid of the Projection Camera out of my comp because it slows down the work flow a lot when I pipe it in to the rest of the comp.
It's pretty hard to explain, but I want to end up with two shapes with the texture fixed on them