An Improved Defogging Algorithm Based on Dark Color Theory Combined with Self-Adaptive Threshold Mechanism

Table 1

Comparison of clearness images quality.

	Figure 3(a)
	Original image	DCP algorithm	Improved DCP algorithm	STM algorithm
Standard deviation	0.2636	0.2878	0.3317	0.3454
Entropy	7.6276	7.0131	7.4399	7.5828
	Figure 3(b)
	Original image	DCP algorithm	Improved DCP algorithm	STM algorithm
Standard deviation	0.1616	0.2498	0.2665	0.2696
Entropy	7.0704	6.8523	7.2481	7.3115
	Figure 3(c)
	Original image	DCP algorithm	Improved DCP algorithm	STM algorithm
Standard deviation	0.1495	0.2507	0.3044	0.3076
Entropy	6.6060	6.7186	6.9363	6.9744

Note. Figures 3(a), 3(b), and 3(c) above correspond to the images shown as Figures 3(a)–3(c), respectively.