[Insight-developers] NoiseImageFilter : renaming suggestion

[Luis Ibanez]

Jim,

Could we consider renaming this filter ?

          " NoiseImageFilter "

actually sounds like a filter that adds noise
to the input image, rather than estimating
the standard deviation of the input.

Should it be:

     NoiseEstimatorImageFilter ?
or
     StandardDeviationImageFilter ?
       (so it matches with "MeanImageFilter")




   Luis



----------------------------------
Miller, James V (Research) wrote:
> Zein,
> 
> It sounds like NoiseImageFilter is what you want.  
> 
> http://www . itk . org/Insight/Doxygen/html/classitk_1_1NoiseImageFilter . html
> 
> It runs across an image an estimates the standard deviation of the pixel
> intensities in a small neighborhood around each pixel.  
> 
> 
> 
> 
> -----Original Message-----
> From: Luis Ibanez [mailto:luis . ibanez at kitware . com]
> Sent: Monday, June 16, 2003 4:10 PM
> To: salah
> Cc: Insight-users at public . kitware . com
> Subject: [Insight-users] Re: image Homogeniety
> 
> 
> 
> Hi Zein,
> 
> You could easily take the MeanImageFilter filter
> http://www . itk . org/Insight/Doxygen/html/classitk_1_1MeanImageFilter . html
> and modify its loop for computing the standard
> deviation of its neighborhood, instead of computing
> the mean.
> 
> This should require to modify less than ten lines of code.
> (between 131 and 145).
> 
> The filter is in
> Insight/Code/BasicFilters/
> 
>    itkMeanImageFilter.h
>    itkMeanImageFilter.txx
> 
> This filter is using internally the Neighborhood
> iterator.
> 
> You could even use the
> 
>    itkVarianceImageFunction.h
> http://www . itk . org/Insight/Doxygen/html/classitk_1_1VarianceImageFunction . ht
> ml
> 
> to help you in the computation of the standard
> deviation so you don't even have to write the
> loop for visiting all the neighbors.
> 
> 
> 
> 
> Regards,
> 
> 
>    Luis
> 
> 
> 
> ------------
> 
> salah wrote:
> 
>>Hi Luis,
>>
>>I need a Filter that calculates the the voxel-wise 
>>homogeniety of an image. 
>>
>>1. Does Itk have sucha filter?
>>2. If not I would develop it myself, but I have a question
>>about this. I need a filter that scans all voxels of the
>>image, and at each voxel, do some calculations on the
>>surrounding (kernel region) of this voxel (say for ex. in a 
>>surroundign of 3x3x3 voxel). 
>>what kind of iterator would you suggest me to use for
>>the main iterator, and for the region-iterator?
>>
>>thanks,
>>Zein
>>
>>
>>
> 
> ->8<------------->8<------------->8<------------->8<------------->8<--------
> ----->8<-
> 
>>Zein I. Salah 
>>University of Tubingen, WSI-GRIS, Sand 14, 72076 Tubingen 
>>Email: salah at gris . uni-tuebingen . de
>>Tel.: (07071) 29 75465 (GRIS),           Fax: (07071) 29 54 66
>>
>>
> 
> 
> 
> 
> _______________________________________________
> Insight-users mailing list
> Insight-users at www . itk . org
> http://www . itk . org/mailman/listinfo/insight-users
> _______________________________________________
> Insight-users mailing list
> Insight-users at www . itk . org
> http://www . itk . org/mailman/listinfo/insight-users
>