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Several projects target constructing dense 3D and appearance models of works of art or archaeological sites. We mention a few representative samples here. A group from IBM1 used a combination of structured light 3D sensing and photometric stereo to model Michelangelo’s Florentine Pietà. In a large-scale project initiated by Stanford University, 2 seven of Michelangelo’s sculptures were modeled, as well as other artifacts including the parts of the Forma Urbis Romae. A European project called Esprit Archatour (EP9213)—see http://www. newcastle. research. ec. org/—digitized and modeled sculptures using active range sensing. The Italian National Research Council in Pisa, Italy, developed and demonstrated acquisition and processing systems dedicated to heritage. 3 A group from the University of Tokyo built shape and appearance models of the 15-meter bronze Great Buddha in Kamakura. 4 Another recent project5 focused on Internet-transmittable 3D digital models of some architectural elements of the Roman Coliseum.