def threshold(self): return threshold_isodata(hist=clamp_histogram(self.histogram))
def threshold(self): hist, _ = clamp_histogram(self.histogram) return np.average(np.arange(hist.size), weights=hist)
def threshold(self): return threshold_otsu(hist=clamp_histogram(self.histogram))
def threshold(self): return threshold_minimum(hist=clamp_histogram(self.histogram))