What I want to do
Make Mapknitter maps with infragram and another mobius (so light!)
So Mat suggested a method of distorting graph paper until it looked right.
Chris Fastie has laid out the limitations of infragram maps --the edges need to be cropped
I think GIMP crops edges.
I want to use this because I'm too poor for photoshop, and freedom rules.
My attempt and results
There are two "Lens Distortion" filters in GIMP
Filters -> Distort -> Lens Distortion
"Main" and "Edge"
Here is the original image
Main -41 edges +5
Main -42 edges 0
Main -50 edges 0
Questions and next steps
What do people think?
Here's a shoreline map with no distortion, -34, and -41 5.