Table 1: Statistical information about the best class number for experimental phantom data set.

CN SNR CP

1 1.000986 0.250000 4.003944 0.469466
2 3.528585 1.602465 2.201973 0.240734
3 13.024477 7.048304 1.847888 0.247406
4 57.982584 45.253936 1.281271 0.042394