Warping an image to a grid
I have been trying to warp a picture of a grid (A) into the red outline of the grid (B). So all the deformed squares of A align with the undeformed squares inside of the red selection B.
At the same time picture C needs to get the same transformation as picture A. Because picture C will be the final result.
The warp tool only offers me a 3 by 3 grid which is not accurate enough to align all the squares.
Does anyone have a solution?

