中文说明：
为了客观和定量的评价上述不同融合方法用于多聚焦图像融合的性能，根据图像自身统计特性对其进行评价，在无标准参考图像的情况下选取均清晰度即平均梯度、空间频域、信息熵、标准差四个参数综合评价各方法的融合性能。
English Description：
In order to objectively and quantitatively evaluate the performance of the above fusion methods for multi focus image fusion, the statistical characteristics of the image itself are evaluated. In the case of no standard reference image, the average resolution, namely average gradient, spatial frequency domain, information entropy and standard deviation, are selected to comprehensively evaluate the fusion performance of each method