28 Sep
2013
28 Sep
'13
4:23 p.m.
skimage.transform.warp calls scipy map_coordinates dosen't it? I believe that does not use the same interpolation method as the IDL routines. I wonder if that could be worked around though.
In case of the PolynomialTransform it will always use map_coordinates, for linear transformations with a transformation matrix, it uses a much faster internal Cython implementation for order < 4. If you set order=3 it would use the same interpolation method as IDL, but you do not have the option to manually set the scaling of the sinc function. But it uses a sensible default for that.
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Johannes Schönberger