Directional projection based image fusion quality metric

@article{Hong2014DirectionalPB,
  title={Directional projection based image fusion quality metric},
  author={Richang Hong and Wenyi Cao and Jianxin Pang and Jianguo Jiang},
  journal={Inf. Sci.},
  year={2014},
  volume={281},
  pages={611-619}
}