Abstract

The cross-correlation matrix of a set of signals is obtained by multiple Fourier holography. Various sources of error make this kind of matrix not directly interpretable. Global methods that correct deterministic fluctuations as well as random perturbations are proposed. They do not take into account any individual element of the matrix, but they minimize the over-all variance. The efficiency of these methods is illustrated by the example of the classification of sonagrams.

© 1978 Optical Society of America

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