1. L-E. Andersson, Fourier transforms of RIO's of arbitrary dimension and order, Appendix 2 in Ref. [12], ibid.
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3. J. Bigun and G. Granlund, Optimal orientation detection of linear symmetry, in First Int. Conf. on Computer Vision, 1987, pp. 433–438.
4. Symmetry interpretation of complex moments and the local power spectrum;Bigun;J. Visual Commun. Image Represent.,1995
5. Three-dimensional invariants and their application to object recognition;Burel;Signal Process.,1995