[vtkusers] Traversing through Image with x,y,z coordinates

[Christian Werner]

Hello!

I am about to build a nice BinaryRemoveRegions filter that will scrap 
away groups of pixels that are below/above a certain size. I took the 
vtkMedian Filter as a template and cropped it down to the most basic 
code which traverses through the image in X-Y-Z order. There I wanted to 
check if everything goes fine by simple copying the input image to the 
output image. Unfortunately, the pointers to the InData are corrupt. You 
can see the result of the copying attached.

It is pretty sure that the inData pointers are corrupt, and not the 
outData pointers since I managed to draw pixels every Xth row/column 
with correct results. I have attached the code.

Could somebody give me a hint of what is causing this malfunction? Note 
that the actual x/y/z coordinates are crucial for my algorithm, because 
I have to check for neighboring pixels in all directions.


Best regards,
Christian
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