[Insight-users] Black output images (again)

[Christian Marshall Rieck]

I realize this problem with black output images are a recurring problem 
but google could not help me, so I turn to you. (I had a very similar 
question some months ago that was caused by a wrong seed, as far as my 
probing can tell, this is not the case here)

The pipeline is pretty basic:
1. read  (float 16-bit, 3D)
2. curvatureFlowImageFilter
3. neighborhoodConnectedImageFilter
4. cast (float, unsigned char)
5. write (unsign. char, 3D)

Things i have tried:

-Added a step between 3 and 4 to rescale values in range 0...255. 
-Kept the output as float and did not rescale
-Kept the output as float and did rescale

(When using float as output imageJ reported 32-bit, can 32000 as replace 
value be to low in this case?)

The input image is an analyze image from IBSR. See 
http://www.idi.ntnu.no/~rieck/bilde/itk/input.PNG for details. The red dot 
is where ImageJ is reporting coordinates and value. (screen shot 
removes the mouse cursor) This coordinate is 
used as the seed-point for the threshold. 

I have tried different values for upper and lower limits on the 
connectedThresholdFilter. But a lower value of 0 and upper of 32000 and 
replace value 32000 still gives a black output image. (as everything 
else) I tried 0,255 as well, in case I somehow was using values of out 
range.  


regards,
Christian Marshall Rieck
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