About reconstruction modes

You can choose one of the following reconstruct modes:

Rigid

Maintains right angles in the pixel grid (as shown by the mesh) at the edges between frozen and unfrozen areas, sometimes producing near-discontinuities at the edges. This restores the unfrozen areas to something close to their original appearance. (To restore their original appearance, use Revert reconstruction mode.)

Stiff

Acts like a weak magnetic field. At the edges between frozen and unfrozen areas, the unfrozen areas continue the distortions in the frozen areas. As the distance from frozen areas increases, the distortions lessen.

Smooth

Propagates the distortions in frozen areas throughout unfrozen areas, with smoothly continuous distortions.

Loose

Produces effects similar to Smooth, with even greater continuity between distortions in frozen and unfrozen areas.

Revert

Scales back distortions uniformly without any kind of smoothing.