To cite package ‘imagerExtra’ in publications use:

Ochi S (2023). imagerExtra: Extra Image Processing Library Based on 'imager'. R package version 2.0.0, https://github.com/shotaochi/imagerextra.

Corresponding BibTeX entry:

  @Manual{,
    title = {imagerExtra: Extra Image Processing Library Based on
      'imager'},
    author = {Shota Ochi},
    year = {2023},
    note = {R package version 2.0.0},
    url = {https://github.com/shotaochi/imagerextra},
  }