Geohazard monitoring and assessment is one of the major application research fields of DiscoveryNet project serving for scientific knowledge discovery via distributed high throughput devices. This paper reports the algorithm and software development of imageodesy, its implementation on MPI and GRID. The imageodesy techniques based on normalised-cross correlation and phase correlation are capabl...

Correlation is a well-established concept to capture the linear relationship between two or more variables. This article covers basic properties, fallacies of correlation and correlation risk in financial applications.

This study investigates seismic interferometry in which the Green’s function is estimated between two receivers by cross-correlation and integration over sources. For smoothly varying source strengths, the dominant contributions of the correlation integral come from the stationary phase directions in the forward and backward directions from the alignment of the two receivers. Gaussian beams can...

{ The behaviour of two well-known image registration techniques, namely the cross-correlation and the phase-correlation algorithms, for input signals corrupted by additive white noise, is studied in the frequency domain. Useful expressions of the displacement measurement error variance are presented, which allow for the analysis of the accuracy of both methods.

In the last years several correlation attacks have been developed. We investigate the implementation of these attacks and find diverse detail improvements which altogether results in a significant speed up.

The Green's function for wave propagation can be extracted by cross-correlating field fluctuations excited on a closed surface that surrounds the employed receivers. This study treats an acoustic multiple scattering medium with discrete scatterers and shows that for a given source the cross-correlation of waves propagating along most combinations of scattering paths gives unphysical arrivals. B...

Considered is the distribution of the crosscorrelation between m-sequences of length 2−1, where m = 2k, and m-sequences of shorter length 2 − 1. New pairs of m-sequences with three-valued crosscorrelation are found and the complete correlation distribution is determined. Finally, we conjecture that there are no more cases with a three-valued crosscorrelation apart from the ones proven here.