[Insight-users] Go from distance map to intensity image

[Zachary Pincus]

You can threshold the resulting image. Threshold all negative values to 
the "inside" intensity, and all positive values to the "outside" 
intensity (or vice-versa depending on your convention). Where you put 
the zero-value is up to you of course.

Typically I choose some huge negative number as the lower threshold and 
zero as the upper threshold with the itkBinaryThresholdImageFilter.

Also, if you want to extract the *outline* and not a full binary mask 
(useful for some visualization tasks, among others), you can use the 
itkZeroCrossingImageFilter.

Zach Pincus

Department of Biochemistry and Program in Biomedical Informatics
Stanford University School of Medicine



On Jun 17, 2005, at 1:38 PM, Sotiris Dimopoulos wrote:

> Hi itk users!
>
> I would like to perform "shape based interpolation"
> and as i know the procedure has the following steps:
>
> 1)create the signed distance map of the
> intensity-binary images
> 2)perform linear interpolation on the 'distance'
> images
> 3)go from distance map to intensity-binary image (the
> inverse procedure of step 1)
>
> Does anyone know how to perform step No3 in ITK?
>
> Thanks in advance!
>   Sotiris
>
>
> 	
>
> 	
> 		
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