Fig. 6

Enlargements from example non-rigid registration results corresponding to the transformation fields in Fig. 4. Top-right unconstrained and bottom-right row-fitted, both with 5-pixel smoothing. Top-left, a further enlarged view of the surface atoms with the unconstrained solution. Note the ‘fish-eye’ type distortions on the atomic columns in the bulk and the ‘horse-tail’ wispy elongations at the surface. All figures show the same colour scale