Medical Image Fusion Algorithm Based on Nonlinear Approximation of Contourlet Transform and Regional Features

Table 2

Indexes of performance evaluation.

	Standard deviation	Correlation coefficients	Entropy	Mutual information
10% significant coefficients	50.48	0.66	7.68	4.51
30% significant coefficients	56.32	0.69	7.68	4.53
50% significant coefficients	63.16	0.70	7.70	4.54
70% significant coefficients	59.32	0.71	7.70	4.55
90% significant coefficients	57.16	0.73	7.72	4.55