I have a question about the fish-eye shader: is it possible to add a barrel distortion which only works in x or y direction of the image? I have looked at the formulas in the fish-eye shader, but that's over my head. I have a webcam which has a fish-eye distortion which can be corrected by a negative power in the fish-eye shader. But still the image looks a bit like this: )==(. I only need some correction in the x direction, but not y, since the lines are straight vertically. Can you give me a formula for this perhaps?
I have a question about the fish-eye shader: is it possible to add a barrel distortion which only works in x or y direction of the image? I have looked at the formulas in the fish-eye shader, but that's over my head. I have a webcam which has a fish-eye distortion which can be corrected by a negative power in the fish-eye shader. But still the image looks a bit like this: )==(. I only need some correction in the x direction, but not y, since the lines are straight vertically. Can you give me a formula for this perhaps?