联合引导滤波和抠图技术的多聚焦图像融合

Multi-focus image fusion based on combined guided filtering and matting technology

为了提高多聚焦图像融合的效果,提出了一种基于引导滤波和图像抠图的多聚焦图像融合方法。首先,通过中值滤波器对源图像进行重复模糊处理,并使用差分算子获得图像的梯度信息。然后,使用引导滤波对梯度图像进行优化处理并获得初始决策图。为了获得更准确的决策图,对初始决策图进行膨胀和腐蚀操作,生成图像抠图中的三值图,并把三值图和原始图像送入图像抠图算法中进行优化,得到精确决策图。最终,根据最终决策图和源图像得到融合结果。实验结果表明:提出的模型和7种先进的方法相比,无论在主观上还是客观上都取得更好的融合性能。

In order to improve effect of multi-focus image fusion,a multi-focus image fusion method based on guided filtering and image matting is proposed.Firstly,the source image is repeatedly fuzzy processing by median filter,and the gradient information of the image is obtained using the difference operator.Then,guided filtering is used to optimize and process the gradient image and obtain the initial decision diagram,In order to obtain a more accurate decision diagram,expansion and erosion operations are performed on the initial decision diagram to generate a ternary diagram in the image matting,and the ternary diagram and the original image are sent to the image matting algorithm for optimization to obtain an accurate decision diagram,Finally,the fusion result is obtained according to the final decision diagram and the source image.Experimental results show that compared with 7 advanced methods,the proposed model achieves better fusion performance in subjective and objective evaluation.