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

Table 5

Index of performance evaluation.

	Standard deviation	Correlation coefficients	Entropy	Mutual information	Running time
Wavelet fusion	53.11	0.72	6.23	1.96	1.752
Haar fusion	57.84	0.75	6.30	2.03	1.805
Contourlet fusion	60.82	0.83	7.52	2.10	3.501
Nonsubsampled contourlet fusion	70.06	0.96	8.04	2.07	7.526
Nonlinear contourlet fusion	62.97	0.85	7.69	2.12	1.055