Of related interest, Robert Silver has made a small industry of his photo-mosaics, which are images composed of thousands of tiny photographs. Each collage is assembled by first scanning an original image and dividing it into a grid of “tiles” which are then compared and matched to a database of photographs. The photographs are arranged based on qualities like color, luminence, and texture, but the database sample is typically organized by subject. Examples include:
George Washington made from the faces of world currency.
Babe Ruth comprised of 1,392 New York Yankee baseball cards.
Dorothea Lange’s Migrant Mother assembled from selected Farm Security Administration photographs.
Marilyn Monroe in her own image.
and of course,
Mona Lisa hidden amid art history’s masterpieces.