@inproceedings{shi2022encrypted,
  title={Encrypted Image Visual Security Index via Non-Local Recognizable Degree Evaluation},
  author={Shi, Ran and Xiong, Jian and Qiao, Tong},
  booktitle={ICASSP 2022-2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
  pages={2994--2998},
  year={2022},
  organization={IEEE}
}