[Insight-users] RescaleIntensityImageFilter doesn't respect user-set InputMinimum/Maximum

[Luis Ibanez]

Hi Zach,

This looks like a bug....

Actually there shouldn't be any SetInputMinimun and
SetInputMaximum methods in this filter...


In any case, the filter that you want is the

      IntensitityWindowImageFilter

http://www.itk.org/Insight/Doxygen/html/classitk_1_1IntensityWindowingImageFilter.html


where you can select the input and output, minimum
and maximum.


Regards,


     Luis


---------------------
Zachary Pincus wrote:
> Hello,
> 
> The RescaleImageIntensityFilter provides methods to set the 
> "InputMinimum" and "InputMaximum" values. This provision would lead one 
> to believe that after setting these values, the rescaling will be from 
> the user-defined input range to the user-defined output range.
> 
> However, in actuality, these user-defined values are ignored, and re-set 
> to the minimum and maximum pixel values in the input image. 
> (itkRescaleIntenistyImageFilter.txx, line 88.)
> 
> I'm trying to think of a good mechanism whereby the user can take 
> control of these values.
> Should the filter automatically note on setting the InputMix/Max that 
> the user has requested this, and then not overrule them? Then how would 
> the user turn this off?
> 
> Perhaps there should be additional methods to tell the class to use the 
> current values or recalculate them? This seems a bit confusing, though.
> 
> Any thoughts?
> 
> Zach Pincus
> 
> Department of Biochemistry and Program in Biomedical Informatics
> Stanford University School of Medicine
> 
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