Abstract: A computer implemented signal processing method to perform a cross-calculation between a first and a second signal by performing a cross-correlation for segments of said first signal with said second signal to obtain a plurality of partial cross correlation functions, obtaining a combined cross-correlation function by combining said partial cross-correlation functions to obtain a combined cross-correlation function, applying an outlier detection or outlier removal approach to identify or remove those segments which are disturbed or corrupted, and re-combining said partial cross-correlation functions without the ones which have been identified as disturbed or corrupted to obtain a less disturbed or less corrupted final cross-correlation function.

Abstract: A method determining the temporal relationship between a first video sequence and a second video sequence, said method comprising: obtaining from said first video sequence a first parameter such that the evolvement of said first parameter over time corresponds to the change of the entropy of said first video sequence over time; obtaining from said second video sequence a second parameter such that the evolvement of said second parameter over time corresponds to the change of the entropy of said second video over time; matching the evolvement of said first parameter over time to the evolvement of said second parameter over time to thereby determine the temporal relationship between the two video sequences.