恒: Ⅰ形容词1.(永久; 持久) permanent; lasting 短语和例子永恒 eternal; everlasting2.(平常; 经常) usual; common; constant 短语和例子恒言 common sayingⅡ名词1.(恒心) perseverance 短语和例子持之以恒 persevere in (doing sth.)2.(姓氏) a sur
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Another means is to extract rotation - invariant and translation - invariant features without registration . the purpose of this means is to avoid error cause by registration 为了避免图像配准时引入的偏差，本文采用的另一类特征提取思路是不进行图像配准，直接提取对旋转和平移都保持恒值的不变特征。
