艺术英语 unit 4.ppt

Learning Objectives 　　This unit is to learn how digital art authentication works. Text A Art Authentication Goes Digital Authenticating works of art has long been the domain of art historians. In addition to their eyes, these art sleuths have also been able to use surface-material examination and x-ray analysis to determine if a work of art is authentic. Now they may have another tool in their arsenal. Scientists have developed a new digital authentication technique that analyzes and classifies paintings based on a digital analysis of the artist’s style. The digital authentication technique builds a statistical model of an artist from scans of a set of authenticated works. Other works are then compared against this baseline data. The process finds consistencies and inconsistencies in the works. In an experiment, Hany Farid, Associate Professor of Computer Science，and his colleagues applied the technique to a set of 13 drawings. The computational model automatically grouped together the eight authenticated works by the 16th-century Flemish artist Pieter Bruegel the Elder, separating them from five imitations. The method could also be used to determine if more than one hand was involved in creating the work. Many great Renaissance painters had large workshops and painted only portions of their works. They let apprentices paint other parts. Hany Farid and his team used the same technique on the Madonna with Child by Pietro Perugino. Three of the faces proved to be statistically similar, while the three other faces were all different. The digital method suggests that at least four hands contributed to the painting. We believe, in collaboration with existing physical authentication, this technique will lead to a whole new era in the field of art authentication. A 1) involve 2) domain 3) in collaboration with