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Issue No. 02 - February (1981 vol. 3)
ISSN: 0162-8828
pp: 240-242
S. S. Reddi , Aeronutronic Division, Aerospace and Communication Corporation, Newport Beach, CA 92663.
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.

S. S. Reddi, "Radial and Angular Moment Invariants for Image Identification," in IEEE Transactions on Pattern Analysis & Machine Intelligence, vol. 3, no. , pp. 240-242, 1981.
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