@inproceedings{Evans04:3,
  title = {Morphological gradient operators for colour images},
  author = {Adrian N. Evans},
  year = {2004},
  researchr = {https://researchr.org/publication/Evans04%3A3},
  cites = {0},
  citedby = {0},
  pages = {3089-3092},
  booktitle = {ICIP},
}