@article{bai2016multi,
  title={Multi-focus image fusion through gradient-based decision map construction and mathematical morphology},
  author={Bai, Xiangzhi and Liu, Miaoming and Chen, Zhiguo and Wang, Peng and Zhang, Yu},
  journal={IEEE Access},
  volume={4},
  pages={4749--4760},
  year={2016},
  publisher={IEEE}
}