# Applying different Wavelet Filters

**URL:** <https://discourse.slicer.org/t/applying-different-wavelet-filters/25029>\
**Category:** Radiomics\
**Created:** [August 31, 2022, 2:50pm UTC](https://discourse.slicer.org/t/applying-different-wavelet-filters/25029 "2022-08-31T14:50:05Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Ella1](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ella1/32/15590_2.png) [@Ella1](https://discourse.slicer.org/u/Ella1)\
**Post date:** [August 31, 2022, 2:50pm UTC](https://discourse.slicer.org/t/applying-different-wavelet-filters/25029/1 "2022-08-31T14:50:06Z")

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Operating system: Windows 10  
Slicer version: 5.0.3  
Expected behavior: Applying different Wavelet (db, coeif, …) and expect to see some differences  
Actual behavior: Do not see any differences between values after and before applying different Wavelet filter.  
This is my code:  
extractor.enableImageTypes(Wavelet={‘db’:[1.0]}, LoG={‘sigma’:[1.0, 3.0, 5.0]})  
extractor.enableImageTypes(Wavelet={‘coif’:[1]})  
Is this the correct way to apply different Wavelet filters?  
I only need to use Daubechies wavelet filter but I am not sure I am applying it correctly.  
One more question, which Wavelet filter is the default if I use this command  
extractor.enableImageTypes(Wavelet={})  
Thanks