[Insight-developers] RE: NoiseImageFilter : renaming suggestion

[Luis Ibanez]

Jim,


     NoiseEstimatingImageFilter sounds good,


BTW, Could we use the output of noise estimation as
a feature image for the LevelSet methods ?

After all the principle is to let the zero set move
fast over homogeneos regions...


Thanks


Luis


--------------------------------------
Miller, James V (Research) wrote:
> Luis,
> 
> I struggled with what to call this filter. I avoided calling it a 
> StandardDeviationImageFilter because I want to allow extensions
> to the filter (activated via modes) to change how the level of the 
> noise is calculated. For instance, right now it calculates the
> standard deviation relative to the sample mean in a neighborhood
> of a pixel.  But the filter could be setup to perform a least squares
> fit to the intensities in a neighborhood of the pixel and calculate 
> the noise as the standard deviation of the intensities relative to 
> a plane or quadric fit to the intensities in a neighborhood.
> 
> So something like "NoiseEstimatingImageFilter" might be a better name.
> 
> I use these types of techniques for determining how to set thresholds 
> for various algorithms and to measure the effectiveness of a smoothing
> filter.  For the latter, I'll run the noise estimating filter on the 
> input and output of a smoothing filter and then compare the mean values
> of the output of the noise estimating filter.
> 
> 
> Jim
> 
> 
>