How to Reproject Image using Camera Coordinates in Shader Nodes

Artistic Support Materials and Textures
1

i rendered a image from my camera and i want to now re project that render back using the same view from the camera and have it align 1-1. I’m using the texture coordinate node and before was using a empty to manually align it but I was having difficulty matching it so I’ve switched to using the camera as the object but the scale is completely off

image
image854×850 130 KB

How can I fix this vector output so the image aligns? My image has a uneven resolution btw.

2

Reproject what? To what? Align what? To what? What are you talking about?

What is that “it” you are talking about here? :laughing:

3

Not sure what you are trying to do exactly but maybe you want to use the rendered image as a background image for your camera and then delete the objects.

You need to do that in the compositor.

Here I rendered the red cube and saved the result, then I deleted the cube and added a sphere, I set the render to “film transparent” in render properties and setup the compositor as shown.

The render of the red cube is now a background image.

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4

https://gregjaimes.gumroad.com/l/VcqZl I found it :+1:

5

Ah Ok, it was not clear exactly you were trying to do.