Translations:Autocorrelation - book/13/en

Next we shall show that the autocorrelation is the convolution of a signal with its zero-point reverse. To autocorrelate a wavelet, we merely convolve the wavelet with its reverse. For example, let us find the autocorrelation of the wavelet $\left\{b_{0}{,\ }b_{\rm {l}}{,\ }b_{2}\right\}$. Its reverse is the anticausal wavelet $b^{R}=\{b_{2}^{*},b_{1}^{*},b_{0}^{*}\}$. Therefore, the folding table for such an operation is