“Lenna or Lena is the name given to a standard test image widely used in the field of image processing since 1973. It is a picture of the Swedish model Lena Forsén, shot by photographer Dwight Hooker, cropped from the centerfold of the November 1972 issue of Playboy magazine.”
“Lenna or Lena is the name given to a standard test image widely used in the field of image processing since 1973. It is a picture of the Swedish model Lena Forsén, shot by photographer Dwight Hooker, cropped from the centerfold of the November 1972 issue of Playboy magazine.”
https://en.wikipedia.org/wiki/Lenna
See also
https://news.ycombinator.com/item?id=8707093
https://news.ycombinator.com/item?id=19181257
https://news.ycombinator.com/item?id=15670650