[vtkusers] Spatial average image filter?

Thu Jun 21 13:47:10 EDT 2001

I'm a little rusty on this but perhaps vtkImageConvolve with a kernel of all
1/27th's (for 3x3x3 convolve). For the mean smoothing kernel, the coefficents
should sum to one to keep the scaling of the intensity normalized....john

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From: TJ Wilkinson <tswilkin at fas.harvard.edu> on 06/21/2001 03:39 PM GMT

               TJ Wilkinson           To:   VTK Mailing List                     
 <tswilkin at fas.harvard.edu>        <vtkusers at public.kitware.com>                 
                                      Cc:    (bcc: John Anast-JM/PGI)            
                              Subject:      [vtkusers] Spatial average image     
        06/21/2001 11:39 AM        filter?                                       

I have a need for a filter that takes the average of the pixel values
surrounding a single pixel in a rectangular volume and replaces the
original pixel with the average value.  The filter vtkImageMedianFilter3D
seems to be exactly that, except I need the mean, not the median.  Is
there a filter that does this, or do I need to derive my own filter to do
this job?

Thank you for all your help, especially John Biddiscombe and David Gobbi.

Sincerely,
Todd

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