Fast 2d brown/pink noise generation?

Discussion in 'Python' started by Mathias, Mar 4, 2005.

  1. Mathias

    Mathias Guest

    Dear NG,

    I'm looking for a fast way to produce 2d-noise images with 1/f or 1/f^2
    spectrum. I currently generate the noise via inverse FFT, but since I
    need lots of data (~10^7 for a monte carlo simulation) it needs to be
    really fast. Does someone know a faster way than my approach?

    - Dimensionality is between 20x20 and 100x100
    - The spectrum doesn't need to be exactly pink/brown, an approximation
    is fine.
    - Implementation in either matlab or scientific python (LAPACK anyway)


    Thanks a lot for hints, literature, algorithms!
    Mathias
     
    Mathias, Mar 4, 2005
    #1
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