基于小波变换与局部离散度的多聚焦图像融合算法

提出了一种基于小波变换与局部离散度的多聚焦图像融合算法。首先对不同聚焦图像进行小波变换,然后采用局部离散度准则对各个方向上的高频系数进行融合,采用重要度准则对低频系数进行融合,最后对融合后的小波系数进行重构,得到了很好的融合图像。实验结果表明,融合效果优于取绝对值大的小波系数和区域方差准则的融合算法。

Multi -focus image fusion based on wavelet transform and local dispersion

A multi-focus image fusion algorithm based on wavelet transform and local dispersion is proposed.At first,the multi-focus images were decomposed by the wavelet transform.Then,the high frequency coefficients of each direction were fused according to local dispersion rule,and the low frequency coefficients were fused according to weightiness rule.Finally,the fused image was obtained by taking inverse wavelet transform.The experimental results show that the performance of the proposed method outperforms the methods based on selecting large absolute wavelet coefficients and using local deviation rule.