The R Journal: article published in 2011, volume 3:1

Raster Images in R Graphics
Paul Murrell , The R Journal (2011) 3:1, pages 48-54.

Abstract The R graphics engine has new support for rendering raster images via the functions rasterImage() and grid.raster(). This leads to better scaling of raster images, faster rendering to screen, and smaller graphics files. Several examples of possible applications of these new features are described.

@article{RJ-2011-008,
  author = {Paul Murrell},
  title = {{Raster Images in R Graphics}},
  year = {2011},
  journal = {{The R Journal}},
  doi = {10.32614/RJ-2011-008},
  url = {https://doi.org/10.32614/RJ-2011-008},
  pages = {48--54},
  volume = {3},
  number = {1}
}