Th e image on the cover of Learning OpenCV is a giant, or great, peacock moth (Saturnia
pyri). Native to Europe, the moth’s range includes southern France and Italy, the Iberian
Peninsula, and parts of Siberia and northern Africa. It inhabits open landscapes
with scattered trees and shrubs and can oft en be found in parklands, orchards, and
vineyards, where it rests under shade trees during the day.
Th e largest of the European moths, giant peacock moths have a wingspan of up to six
inches; their size and nocturnal nature can lead some observers to mistake them for
bats. Th eir wings are gray and grayish-brown with accents of white and yellow. In the
center of each wing, giant peacock moths have a large eyespot, a distinctive pattern most
commonly associated with the birds they are named for.