Upsample

Upsample[array,n]

returns an upsampled version of the array by inserting zeros between array elements.

Upsample[array,n,offset]

shifts array so that its first element moves to the position offset in the resulting array.

Upsample[array,n,offset,val]

inserts elements of value val between array elements.

Upsample[image,…]

upsamples an image.

Details

  • In Upsample[array,…], array can be an array of any rank.
  • Upsample works with arrays of any rank and 2D and 3D images.
  • Upsample[array,{n1,n2,…}] inserts ni zeros between elements in the i^(th) dimension.
  • Upsample[array,n] is equivalent to Upsample[array,n,1].
  • In Upsample[array,n,offset], the offset has to be an integer between 1 and n.

Examples

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Basic Examples  (3)

Upsample a list by a factor of 3:

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Use an offset:

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Specify the value to be inserted:

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Upsample a 2D array:

In[1]:=
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Out[1]//MatrixForm=

Upsample an image by a factor of 2:

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Out[1]=

Scope  (3)

Applications  (3)

See Also

Downsample  ArrayResample  Riffle  ImageResize

Introduced in 2012
(9.0)
| Updated in 2016
(10.4)