Signal-to-noise ratio

In order to test the convergence performance, we use the widely used measurement(Mahdad et al., 2011; Liu et al., 2009; Hennenfent and Herrmann, 2006):

$\displaystyle SNR=10\log_{10} \frac{\Arrowvert \mathbf{d} \Arrowvert_2^2}{\Arrowvert\mathbf{d}-\hat{\mathbf{d}}\Arrowvert_2^2},$ (12)

where the unit for $SNR$ is $dB$, $\mathbf{d}$ and $\hat{\mathbf{d}}$ denote the true and estimated data, respectively.




2020-02-28