[ITK] [ITK-users] k-means on 12 bit data

[Simon Alexander]

Hi,

I was using itk::ScalarImageKmeansImageFilter on some largish volumetric
data, all unsigned 12 bit, and found it unusably slow for the particular
task.

Is there an efficient k-means filter for constrained data ranges like this?

For this use it should be computable a couple of orders of magnitude faster
than the general method, so I'm just trying to avoid re-implementing if
possible.

- Simon
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