A Novel Fusion Algorithm for Multi-focus Image

Multi-focus image fusion is an important research content of image processing. A novel and effective multi-focus image fusion algorithm is proposed in this paper. The images to be fused are blurred by Gaussian filter firstly, and then the energy of image Laplacian criterion function is introduced to judge the clear or bleary part of the image. The correction process is applied to amend the wrong judging pixel afterwards and we can get the fusion map. Using the fusion map, the fused image can be obtained. Experimental results demonstrate the proposed algorithm is superior to the traditional average algorithm and some improved algorithm, such as DWT-based algorithm. The clarity and the objective evaluation indexes value of the fused image are improved greatly.