An Image Enhancement Method Using the Quantum-Behaved Particle Swarm Optimization with an Adaptive Strategy

Figure 6

Comparison of enhancements using different approaches for “Waterlilies”.

(a) Degraded Waterlilies

(b) Equalization of histogram in R, G, B

(c) Equalizing histogram in H, I, S

(d) Enhanced by GA

(e) Enhanced by PSO

(f) Enhanced by QPSO

(g) Enhanced by AQPSO