From: An improved EZBC algorithm based on block bit length
Threshold
1
2
4
8
16
32
64
Lena
BL-EZBC
156
109
63
47
31
20
15
EZBC
406
312
187
93
46
Goldhill
172
125
94
62
26
453
375
265
78
21
Barbara
171
422
344
234
140