unshred layer

[rich2005]

Quote:..So the calculation is 26 * 18 + 25 * 2 = 518

But for some reason the image is 530px in width?!?
So I don't understand how that's possible. There is nothing at the left or the right so where do the extra pixels come from?

The left and right end columns are 19 pix wide which accounts for an extra two pixels
If you set a 20x20 grid up you find the spacing is not uniform, on that basis the uncrop plugin is not going to work.

   

I can get a poor result using a liquid-rescale plugin, but some preparation is required to make a suitable mask and still not 100% 

   

Looks to me like the original was for pixel art, probably an indexed colour image. Maybe copied as a screenshot, hence the anti-aliasing as a RGB image