Hey Luca-

     Thanks for all of your hard work on this bug.

     Anna Hoppe and I have tried out the new python script, and we are still 
having some difficulties with the script. Now, when we specify the bounding box 
of the area that we want to paint, it seems to remain in the same place after 
the script has been run. As you recall, this was part of the problem earlier. 
That part seems to be fixed. Now, however, after we select our paint region and 
run the script, a large part of the image becomes the background. It 
essentially crops a much larger portion of the image than intended. The 
rendering of the image after the script has been run shows a lighter area where 
the bounding box was chosen, but then you can see a darker region on the right 
of the box and part of the original image on the left. This consequently causes 
a large portion of the the surface model to be cropped when the 
vmtkmarchingcubes algorithm is run. The original surface model is red and the 
painted model is blue. You can clearly see that the area that the region 
painted over after running the vmtkmarchingcubes script is much larger than 
first specified.

     Would you have any ideas as to why this might be happening? It has done 
this each time we have tried to run the new script.

Thanks,
Ben Dickerhoff
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