lenna
The Internet's first poster girl, a standard test load used in the
image processing community. The image was originally cropped from the
November 1972 issue of Playboy Magazine, which anglicized the model's
name with a double n. It has interesting properties -- complex
feathers, shadows, smooth (but not flat) surfaces -- that are
pertinent in demonstrating various processing algorithms for image
compression, filtering, dithering, texture mapping, image recognition,
and so on. After a quarter century of remaining completely unaware
that she had become an icon, a gray-haired but still winsome Lenna
finally met her fans at a computer graphics conference in 1997. There
is a fan page at www.lenna.org, with more details. Compare {Utah
teapot} and {Stanford Bunny}