i want to understand ,how to find out Discrete wavelet transform of image 4 by 4 size using Haar wavelet on paper ?

  • $\begingroup$ Please explain a bit more about what you've tried. $\endgroup$
    – Peter K.
    Nov 25, 2013 at 16:12
  • $\begingroup$ This may give you a start. Haar Wavelet/Transform $\endgroup$
    – rickhg12hs
    Nov 25, 2013 at 22:05

1 Answer 1


Discrete Wavelet Transform is applied using Convolution.
Each variant has its own bank of filters which are applied repeatedly.
Sometimes decimation operation is applied between repetition.

A great tutorial about Wavelets in the context of Signal / Image Processing is given in Wavelets Tour.


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