The Venetian artist Jacopo de ' Barbari , whom DÃ 1\/4 rer had met in Venice , visited Nuremberg in 1500 , and DÃ 1\/4 rer said that he learned much about the new developments in perspective , anatomy , and Body proportions from him . The Venetian artist Jacopo de ' Barbari , whom DÃ 1\/4 rer had met in Venice , visited Nuremberg in 1500 , and DÃ 1\/4 rer said that he learned much about the new developments in perspective , anatomy , and proportion from him .