contrariety
n. 反对,矛盾,相反物
1. the relation between contraries
I _ 7 is amended in this paper . When a image overturn 180� �, its value is contrariety.
文中修改了第7个矩不变量I7,对翻转180°后的图像, 其值保持不变,符号刚好相反.
contrarieties
varietycontradictiondifferencedisagreement