Using an image as background

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You'll have to excuse my mutilating of terms here. I come from a 2D development world and I am working on translating what I know into the 3D world.

I am trying to generate something similar to this:

If we can think in “Layers”

Top Layer = Emit Particle Fluid
Bottom Layer = Tif. image of a landscaped yard.

End result to look like the fluid is emitting from an area in the tif file and then rolling down the image. (I have attached a jpg to clarify).

I have messed around a little bit with trying to create a grid, (Although the size never seems to be right, like I'm looking to specify the pixel size I want the grid to be so I can texture it with the tif file). I know this is apples to oranges, and I'm thinking things don't work this way, but I'm trying to learn.

I have tried Vex Layered surface from another post I found here. It's the closest I have come to what I want, but the lighting on it is weird etc. I'd like the rendered output to look identical to the original Tif file itself.

When I do have this all done, my goal is to render it out at the exact pixel dimensions of the original tif file.

I hope this makes sense and I know I have tons to learn. Interested in pointers to applicable tutorials or “Keywords”

I appreciate anyone's assistance and expertise here.

Thanks!

Attachments:
lawn.jpg (27.8 KB)

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Hi Phil,
You can do this in the compositor by loading your tiff image then layering your rendered water over it.

http://www.sidefx.com/docs/houdini9.5/composite/layers [sidefx.com]
http://www.sidefx.com/index.php?option=com_content&task=view&id=445&Itemid=132 [sidefx.com]
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Awesome, this is exactly what I was looking for… Thanks a million!
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