C = VL_IKMEANS(X,K) returns the centers of a K-means paritioning of the data space X. X must be of class UINT8. C is of class UINT32.
[C, I] = VL_IKMEANS(...) returns the cluster associations I of the data as well.
VL_IKMEANS() accepts the following options:
Maximum number of iterations before giving up (the algorithm stops as soon as there is no change in the data to cluster associations).
Algorithm to use ('Lloyd', 'Elkan').
Increase the verbosity level.