[Insight-users] values for 'ThresholdImageFilter'

[Ing. Arturo Vargas Olivares]

Hi to all

I'm trying to test the 'ThresholdImageFilter' setting up its values (lower
and upper) with variables (variables 'lower' and 'upper'). I'm not sure if
this is valid because a TypeError appears (see green output).

I'd like to know if it is possible to do in some way this setting up with
variables. I don't want to have static values in the threshold all the time.

Thank you in advance for your comments.



In[50]: average
Out[50]: 3594
In[51]: lower=average-100;
   . . . : upper=average+100;
   . . . : threshold = sitk.ThresholdImageFilter()
   . . . : threshold.SetLower(lower)
   . . . : threshold.SetUpper(upper)
   . . . : threshold.SetOutsideValue(4000)
   . . . : image_3 = threshold.Execute(image_2)
   . . . : aa=sitk.GetArrayFromImage(image_3)
   . . . : mplot.figure()
   . . . : mplot.imshow(aa,cmap=cm.gray)
   . . . : mplot.colorbar()
   . . . :
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
C:\Users\Student3\Desktop\MRI images\<ipython-input-51-8eecea2cdc9b> in
<module>()
      2 upper=average+100;
      3 threshold = sitk.ThresholdImageFilter()
----> 4 threshold.SetLower(lower)
      5 threshold.SetUpper(upper)
      6 threshold.SetOutsideValue(4000)
C:\Python27\lib\site-packages\simpleitk-0.4.0-py2.7-win-amd64.egg\SimpleITK.pyc
in SetLower(self, *args, **kwargs)
  19339
  19340         """
> 19341         return _SimpleITK.ThresholdImageFilter_SetLower(self,
*args, **kwargs)
  19342
  19343     def GetLower(self):
TypeError: in method 'ThresholdImageFilter_SetLower', argument 2 of type
'double'
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.itk.org/pipermail/insight-users/attachments/20120522/5c1aec72/attachment.htm>