A novel set of rotationally and translationally invariant features for images based on the non-commutative bispectrum

Risi Kondor

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arXiv · cs/0701127

A novel set of rotationally and translationally invariant features for images based on the non-commutative bispectrum

Risi Kondor

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Abstract

We propose a new set of rotationally and translationally invariant features for image or pattern recognition and classification. The new features are cubic polynomials in the pixel intensities and provide a richer representation of the original image than most existing systems of invariants. Our construction is based on the generalization of the concept of bispectrum to the three-dimensional rotation group SO(3), and a projection of the image onto the sphere.

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Risi Kondor. 2007-12-28. A novel set of rotationally and translationally invariant features for images based on the non-commutative bispectrum. https://arxiv.org/abs/cs/0701127

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