Slicing approach to bispectrum estimation

Details Slicing approach to bispectrum estimation Slicing approach to bispectrum estimation

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1351..561g&link_type=abstract

IN: Digital image synthesis and inverse optics; Proceedings of the Meeting, San Diego, CA, July 9-13, 1990 (A92-18776 05-74). Be

Astronomy and Astrophysics

Astronomy

Computerized Simulation, Image Processing, Speckle Interferometry, Image Reconstruction, Power Spectra, Seeing (Astronomy)

Scientific paper

A fast approach is described for the estimation of bispectra of 2D objects at high light levels. By radially slicing each 2D specklegram to produce a set of 1D signals the number of calculations required becomes 0(N exp 3) instead of 0(N exp 4) for (N x N)-sized specklegrams. The speed-up factor is 175 when N = 512, for example. Computer simulations of this algorithm are described and their results are summarized. The results show that high quality is feasible if each reconstructed slice can be accurately centered. Some approaches to solution of this problem are discussed.

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