Aeronutronic Division, Aerospace and Communication Corporation, Newport Beach, CA 92663.
IEEE Trans Pattern Anal Mach Intell. 1981 Feb;3(2):240-2. doi: 10.1109/tpami.1981.4767087.
Radial and angular moments of images are presented and methods are shown for deriving moment functions that are invariant with respect to rotation, translation, reflection, and size changes without the aid of the theory of algebraic invariants. Hu's invariants are expressed in terms of these radial and angular moments and it is claimed that this facilitates visual inspection of invariance properties.
给出了图像的径向和角向矩,并展示了如何在不借助代数不变量理论的情况下,推导出关于旋转、平移、反射和大小变化不变的矩函数。Hu 不变量可以用这些径向和角向矩来表示,并声称这有助于直观地检查不变性性质。