@article{anovelblockdctandpcabasedimage,
  title = {A Novel Block-DCT and PCA Based Image Perceptual Hashing Algorithm},
  author = {Zeng Jie},
  year = {2013},
  eprint = {1306.4079},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1306.4079v1},
}