Table 3.

ESAM values between multi-focus and fused images.

	M1	M2	PCA	M3	Wavelet	Proposed method
AEaF16 × 16	20.37	19.96	19.89	19.82	19.27	18.96
AEaF32 × 32	19.85	19.32	19.29	19.24	18.95	18.42
AEaF64 × 64	19.06	18.62	18.53	18.42	18.13	17.95
AEbF16 × 16	20.08	19.43	19.38	19.35	18.87	18.54
AEbF32 × 32	19.62	18.88	18.81	18.76	18.11	17.96
AEbF64 × 64	18.98	18.27	18.15	18.03	17.66	17.38