clusters = k_means.cluster(3, 2,zip(zip(luma, saturation), range(len(luma))),
[[0., 0.5], [0.5, 0.5], [1., 0.5]])
#clusters.sort(key=mean_luma)
if show_all:
clusters = k_means.cluster(3, 2,zip(zip(luma, saturation), range(len(luma))),
[[0., 0.5], [0.5, 0.5], [1., 0.5]])
#clusters.sort(key=mean_luma)
if show_all: