@article{generationofgradientpreservingimages,
  title = {Generation of Gradient-Preserving Images allowing HOG Feature Extraction},
  author = {Masaki Kitayama and Hitoshi Kiya},
  year = {2021},
  eprint = {2104.01350},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2104.01350v2},
}