deform
Arguments:
- _amplitude>=0,_interpolation
Description:
Apply random smooth deformation on selected images.
interpolation can be
{ 0=none | 1=linear | 2=bicubic }.
Default values:
amplitude=10.
Example of use:

Command:
image.jpg +deform[0] 10 +deform[0] 20

Command:
image.jpg +deform[0] 10 +deform[0] 20

Command:
image.jpg +deform[0] 10 +deform[0] 20