Corner-pinning a rectangle over a larger canvas

I feel like there’s an easy solution for this, but I’m having trouble wrapping my head around it. Maybe someone else has done something like this. I’d like to corner pin an image, but in doing so, I may make it larger than itself. I don’t want to composite it over a larger blank image first, because then it doesn’t function as a “corner” pin. It pins the corners of the larger image and is much harder to control precise alignment. Perhaps I could so something wacky like pin a gradient that represents the source image and use it as the input to a displace? This seems kind of like overkill… Anyone have a simpler solution?

not sure I understand you correctly but this is essentially what the Corner Pin TOP does.
On the first page “Extract” you give the exact coordinates which part of the image to extract for corner pinning, and on the second page “Pin” you place the corners of only that extracted image - so no precision is lost.

See example attached - on the first page I tell it to extract only the 300x200 image from the center, and on the second page I place the corners on a different location to make it 400x300 and place it in the lower left corner.

Or do you mean something else?
corner_pin_extract_and_place.tox (630 Bytes)

Yes! I simply didn’t understand what the extract page was for. Makes a lot of sense and works perfectly. Thanks!!
-michael