提出了一种基于非采样Contourlet 变换(NSCT)和脉冲耦合神经网络(PCNN)的红外与可见光图像融合方法。首先用NSCT 对已配准的源图像进行分解，得到低频子带系数和各带通子带系数；其次对低频子带系数采取一种基于边缘的方法以得到融合图像的低频子带系数；对各带通子带系数提出了一种改进的基于PCNN 的图像融合方法来确定融合图像的各带通子带系数；最后经过NSCT 逆变换得到融合图像。实验结果表明，本文方法优于Laplacian 方法、小波方法和传统的NSCT 方法。

A fusion algorithm of infrared and visible images was proposed based on Nonsubsampled Contourlet Transform (NSCT) and Pulse Coupled Neural Networks (PCNN). Firstly, two registered original images were decomposed by using NSCT separately, thus the low frequency subband coefficients and varieties of directional bandpass subband coefficients were obtained. Secondly, the selection principle of the low frequency subband coefficients was based on edges of images. The selection principle of the bandpass directional subband coefficients was improved by fusion method based on PCNN. Finally, the fused image was obtained by performing the inverse NSCT on the combined coefficients. The experimental results show that the proposed algorithm outperforms laplacian-based, wavelet-based and NSCT-based fusion algorithms.