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  • Last update: 5 years ago
  • Total downloads: 31
  • Operating system: Linux, Mac OS X, Win All, BSD, Solaris
  • Publisher: Andre (4 other programs)
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scripts default iconFaster 2D-Hadmard Tranform (Scripts) Publisher's description

This function generates the 2D Walsh or Hadamard Transform of a matrix.

This function generates the 2D Walsh or Hadamard Transform of a matrix.
Where the Walsh Transform uses the sequency ordered matrix and the Hadamard the natural/hadamard ordered matrix.
The paley ordered transform is not yet implemented.

On my machine the function can transform matrices of a size up to 4096x4096 in very little time compared to the other 2D Walsh/Hadamard transform (ID 6882) which needs substantially more time.
For a 4096x4096 the transformation takes ~30s on the first call and ~20s after that (Transformation matrix is cashed)

Walsh functions:

Howto generate sequency ordered Hadamard Matrices:


System Requirements:

MATLAB 7.6 (R2008a)
Program Release Status: New Release
Program Install Support: Install and Uninstall

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