Criminisi and i confirmed the high symmetry of such metalwork by applying our perspective analysis to a true projection ? a modern photograph ? of a direct casting of a 15th - century four - arm lichtkroon 我與克里米尼西用透視法,分析一盞15世紀(jì)四臂吊燈投射在相片上的投影,確認了它的高度對稱性。