A multi-focus image fusion method via region mosaic on Laplacian pyramids

作者:Kou, Liang; Zhang, Liguo*; Zhang, Kejia; Sun, Jianguo; Han, Qilong; Jin, Zilong
来源:PLos One, 2018, 13(5): e0191085.
DOI:10.1371/journal.pone.0191085

摘要

In this paper, a method named Region Mosaicking on Laplacian Pyramids (RMLP) is proposed to fuse multi-focus images that is captured by microscope. First, the Sum-ModifiedLaplacian is applied to measure the focus of multi-focus images. Then the density-based region growing algorithm is utilized to segment the focused region mask of each image. Finally, the mask is decomposed into a mask pyramid to supervise region mosaicking on a Laplacian pyramid. The region level pyramid keeps more original information than the pixel level. The experiment results show that RMLP has best performance in quantitative comparison with other methods. In addition, RMLP is insensitive to noise and can reduces the color distortion of the fused images on two datasets.