Understanding min cut

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Understanding min cut

I am trying to understand how does MinCutSegmentation work in PCL. I am
setting some points as foreground points, but regardless of what points I
chose as my foreground points, I get the same result. The segmentation
basically crops some part of my point cloud and returns the remaining part
as "foreground".

My understanding from reading the paper for MinCut was that the points I
select as foreground should definitely be marked as foreground in the final
cluster, however, I am seeing that that doesn't happen.

I have posted this question with code and images on stackoverflow as well
and hence adding the link to the question here to avoid repeating myself.


Anyone who has used MinCut segmentation before and can point me to what am I
doing/understanding wrong here?


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