@article{imagedenoisingbasedonimproveddatadriven,
  title = {Image denoising based on improved data-driven sparse representation},
  author = {Dai-Qiang Chen},
  year = {2015},
  eprint = {1502.03273},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1502.03273v2},
}