Abstract
Image descriptors based on a circular-Fourier–radial-Mellin transform are
proposed. They are invariant with respect to rotation, translation, and change
of scale. They represent a generalized approach to specific descriptors using a
circular-harmonic expansion, a Mellin transform, or moment invariants. The
possibility of computing the Fourier–Mellin descriptors by using an
optical processor in real time is discussed.
© 1986 Optical Society of America
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