Improved Glowworm Swarm Optimization Algorithm for Multilevel Color Image Thresholding Problem

Figure 6

For = 2, 4, 6, and 8, images (a)–(d) for pen, (e)–(h) for pepper, (i)–(l) for soccer, (m)–(p) for test, and (q)–(t) for yacht, using IGSO algorithm based on minimum cross entropy.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)

(k)

(l)

(m)

(n)

(o)

(p)

(q)

(r)

(s)

(t)