Wavelet synthesis example

The example below is a Java applet which calculates a fractal surface based on the inverse wavelet transform and displays it as a grayscale image. These are not "lifted" wavelets, and the input is assumed to be periodic, so the output should wrap around in x and y. The source code is adapted from The UBC Imager Wavelet Package -- Release 2.1, and is in the public domain.

Available filters include:

This example uses the Haar basis. Not very smooth, is it?

This example uses the spline-3,7 basis. Much smoother. There seems to be a problem with the spline-3,3 filter, which I may fix.

Another example, using the Daubechies-4 wavelet.

Yet another example, using the Daubechies-20 wavelet.

Up to wavelet synthesis methods Up to the wavelet synthesis page

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1996 cburke@mitre.org

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