Table 7.

Thresholds and fitness values searched by PERSSA and SSA on MET when $K=6$.

Value	Image	Renyi Entropy		Symmetric Cross Entropy		Kapur Entropy
		PERSSA	SSA	PERSSA	SSA	PERSSA	SSA
Thresholds	No. 1	41 78 114 146 173 205	40 82 112 141 170 199	27 53 87 123 157 189	39 68 97 129 148 180	38 70 102 134 169 198	37 59 96 129 197 162
	No. 2	44 79 116 154 198 231	50 74 99 125 176 226	26 48 82 114 152 186	30 55 83 113 148 180	41 91 127 162 189 233	41 90 127 161 186 234
	No. 3	41 80 109 153 186 229	36 62 100 121 189 229	32 65 94 122 148 181	31 63 100 130 160 184	46 86 122 155 188 230	56 95 117 143 170 231
	No. 4	39 76 115 151 188 223	43 78 111 145 183 223	31 58 94 125 156 182	32 58 83 126 154 178	49 86 125 156 190 227	38 73 99 116 156 189
	No. 5	36 67 101 136 168 198	39 59 87 124 160 195	29 56 90 119 152 187	30 45 66 89 133 178	37 69 98 127 158 191	39 63 88 118 159 192
Fitness value	No. 1	2.4450E+01	2.4436E+01	2.2693E+05	2.4903E+05	2.4245E+01	2.4184E+01
	No. 2	2.4799E+01	2.4493E+01	2.6417E+05	2.6713E+05	2.4424E+01	2.4409E+01
	No. 3	2.4708E+01	2.4339E+01	2.6368E+05	2.6778E+05	2.4437E+01	2.4162E+01
	No. 4	2.4325E+01	2.4316E+01	1.8345E+05	1.9189E+05	2.3906E+01	2.3718E+01
	No. 5	2.4371E+01	2.4274E+01	2.5295E+05	2.9481E+05	2.4156E+01	2.4079E+01