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Summary


RavenFilter
Process categoryBrief description

Computational demand

for typical tomography data

(low, medium, high)

Comment(s)Reference(s)Common alternative process(es)
filter

To suppress ring artefacts.

Medium
  1. Operates on sinograms.
  2. Over-aggressive application can lead to new artefacts.
Numerical removal of ring artifacts in microtomography
  1. RingRemovalWaveletfft
  2. CcpiRingArtefactFilter


Parameters


Brief description

Savu Configurator command
>>> disp -avv

-------------------------------------------------------------------------------------
 1) RavenFilter(savu.plugins.ring_removal.raven_filter)                              
  A plugin to remove ring artefacts                                                  
    1)                 uvalue : 20
    To define the shape of filter, e.g. bad=10, moderate=20, minor=50.
    2)            in_datasets : []
    Create a list of the dataset(s) to process.
    3)                 nvalue : 4
    To define the shape of filter.
    4)           out_datasets : []
    Create a list of the dataset(s) to create.
    5)                 vvalue : 2
    How many rows to be applied the filter.
    6)                  padFT : 20
    Padding for Fourier transform.
-------------------------------------------------------------------------------------

>>> 

Additional notes

ItemParameter nameParameter formatExample(s)Comment(s)
Parameter valueEffect
1

uvalue


10To suppress prominent ring artefacts.
20To suppress moderate ring artefacts.
50To suppress minor ring artefacts.
2

in_datasets





3nvalue



4

out_datasets





5

vvalue





6padFT





Usage

TBC.




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