@article{imagedifferentialinvariants,
  title = {Rotation Differential Invariants of Images Generated by Two Fundamental Differential Operators},
  author = {Hanlin Mo and Hua Li},
  year = {2019},
  eprint = {1911.05327},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1911.05327v2},
}