Bake camera projection onto object? Tweet

[linograndiotoy]

Sorry, I missed the whole baking camera topic!

I don't think you can bake a front projection.

Also, why would you want to do that? Can't you just composite the rendered images using front projection directly?

[JackMcRip]

Thank You for your comment
I have done so.
But for me it looks like the angle from Camera to object is not the projected angle.
Or do I misunderstand the feature camera projection.

I have done a camera match moving by Blender3D-Tracking feature.
Now I want to bake the camera projection from the background in camera object to the reconstructed objects.
I must turn the 3d render camera a bit and for the objects must have fixed texture.

Here are my actually result with transform the UV.
Should the angle of the lines from the square the same like the lines in the projected UV-Color image?

[JackMcRip]

Sorry, I missed the whole baking camera topic!

I don't think you can bake a front projection.

Also, why would you want to do that? Can't you just composite the rendered images using front projection directly?

The problem is that I must turn the camera into the 3D mesh.
In the filmed clip the cam move to a object and ends where I must start my visualisation.
In the visualisation I do a cut of it to visualize the function.
I don't want to blend out the movie clip into black background.
I want to move to blend into the render cam and move it near to the object.
And then the movie clip hide.
The 3D should blend into the filmed background. Then Blend in the textured Object for turn the cam in one second.

For moving the render cam near to the object with a little turn the texture must fixed to the objects.
In this time the camera front projection had no more images and I must render the environment baked onto objects.

[JackMcRip]

Sorry, I missed the whole baking camera topic!

I don't think you can bake a front projection.

Also, why would you want to do that? Can't you just composite the rendered images using front projection directly?

Can I project with one camera and render with another?

[JackMcRip]

Can I bake with Cycles Camera?
Is it possible to get the same camera attributes in both render engines?

[linograndiotoy]

If you use the Keep Front Projection option, you'll be able to fix the projection itslef to the object is mapped to.
Just turn the option OFF and define the position of the texture. Then it will "stick" to the object when the camera moves.

[JackMcRip]

Thank you - sounds great.
But I have not enought experience with blender.
How to stick?

I try to disable front projection.

Enabled

Disabled

I try some projection nodes to stick the texture.
Not working.

"and define the position" - I don't know how...
Do you meaning UV-Transform Input with UV-Tansform Value Node?
Only Position changing?

Enabled

[linograndiotoy]

You need to use a Transform Node in the UV Transform of the Image Node, changing position and scale in any frame so the image will match the mapped object exactly as you need.
And yo need to do that with Keep Front Projection OFF.