WOLFRAM

Legacy Documentation

Digital Image Processing (2000)

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ImageWarp

The transformation matrix w has dimensions 2×(N+1)(N+2)/2, where N is the order of a polynomial mapping function (see WarpMatrix).
The option InterpolationOrder determines the interpolation strategy used in calculating the pixel values in the warped image. Nearest-neighbor or higher-order interpolants may be used.
The default setting is InterpolationOrder → 1, which selects bilinear interpolation.
Using InterpolationOrder → 0 results in nearest-neighbor interpolation.
The argument img may be a matrix or ImageData expression.
See also User's Guide 4.3.
Modified in Version 2.

Examples

This loads the package.
In[1]:=
This loads the example beans image.
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Here is a transformation matrix that defines a clockwise rotation of 45 degrees around a pivot point at position {0, 0} in the image plane.
In[3]:=
This applies the spatial transformation defined by matrix rot to image img.
In[4]:=
Out[4]=Out[4]=
Here is an example of a rubber sheet transformation.
In[5]:=
Out[5]=Out[5]=