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Legacy Documentation

Digital Image Processing (2000)

This is documentation for an obsolete product.

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UpSample

UpSample[img] inserts one zero between elements at each level of img.

UpSample[img, k] inserts k-1 zeros between elements at each level of img.

UpSample[img, {k₁, k₂, ...}] inserts k_i-1 zeros between elements at level i of img.

UpSample[img, {k₁, k₂, ...}, v] inserts k_i-1 values v between elements at level i of img.

UpSample[img] is equivalent to UpSample[img, {2, 2, ...}].

UpSample[img, k] is equivalent to UpSample[img, {k, k, ...}].

The argument img may be an array of any dimensions or ImageData expression.

See also User's Guide 4.2.

Example

This loads the package.

In[1]:=

This upsamples a 1D list.

In[2]:=

Out[2]=

Here is an example of upsampling a 2D array by different factors in each of its dimensions.

In[3]:=

Out[3]//MatrixForm=